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You searched for: Publication Year 2013 Remove constraint Publication Year: 2013 Subject term condition factor Remove constraint Subject term: condition factor
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1. Artificial Marker Selection and Subsequent Tagging Evaluations with Juvenile Burbot

Author:
Neil K. Ashton; Susan C. Ireland; Kenneth D. Cain
Source:
Transactions of the American Fisheries Society 2013 v.142 no.6 pp. 1688-1698
ISSN:
1548-8659
Subject:
Lota lota; condition factor; juveniles; monitoring; specific growth rate; stakeholders; transponders; British Columbia; Idaho
Abstract:
... A conservation program developed by regional stakeholders incorporates stock enhancement as one of several approaches to restore an imperiled Burbot Lota lota population native to Idaho and British Columbia. Tagging juvenile fish is pivotal to stock enhancement monitoring; however, limited information is currently available on marks or tags applied to Burbot. We identified six criteria to guide ar ...
DOI:
10.1080/00028487.2013.788558

2. Bioassay analysis of efficacy of phytoremediation in decontamination of coal mine effluent

Author:
Sandhya Bharti; Tarun Kumar Banerjee
Source:
Ecotoxicology and environmental safety 2013 v.92 pp. 312-319
ISSN:
0147-6513
Subject:
Azolla pinnata; DNA; Heteropneustes fossilis; Lemna minor; RNA; air; bioaccumulation; bioassays; brain; catfish; coal; condition factor; decontamination; gills; glycogen; kidneys; liver; macrophytes; metals; muscles; phytoremediation; wild fish
Abstract:
... Phytoremediation efficacy of Lemna minor and Azolla pinnata in decontaminating metals from coal mine effluent (CME) was analyzed using bioassays. Catfish Heteropneustes fossilis were exposed to both the phytoremediated CMEs for the metal bioaccumulation analysis and biochemical alteration in seven vital tissues. Gross concentration of metals accumulated in liver, kidneys, air breathing organs (ABO ...
DOI:
10.1016/j.ecoenv.2013.03.004

3. Bioavailability of heavy metals in fresh water Tilapia nilotica (Oreachromis niloticus Linnaeus, 1758): Potential risk to fishermen and consumers

Author:
Manal M. El-Sadaawy; Ghada F. El-Said; Neama A. Sallam
Source:
Journal of environmental science and health 2013 v.48 no.5 pp. 402-409
ISSN:
1532-4109
Subject:
Oreochromis niloticus; adverse effects; analysis of variance; bioavailability; brain; cadmium; chromium; cobalt; condition factor; copper; dietary exposure; fish; fish consumption; fish farms; fishermen; freshwater; gills; health status; heart; heavy metals; human health; lead; linear models; liver; nickel; pollution; public health; risk; sewage; zinc; Egypt
Abstract:
... The study was undertaken to assess the accumulation of some heavy metals (Cr, Co, Cu, Ni, Zn, Pb and Cd) in different tissues (muscle, gills, heart, liver, brain, bone and skin) of Tilapia nilotica. It is one of the most edible fish species in Egypt and was collected from a commercial fish farm in order to evaluate their potential risk to fishermen and consumers. This fish farm is fed with dischar ...
DOI:
10.1080/03601234.2013.742719
PubMed:
23431978

4. Biological Reference Points for the Nutritional Status of Chesapeake Bay Striped Bass

Author:
John M. Jacobs; Reginal M. Harrell; Jim Uphoff; Howard Townsend; Kyle Hartman
Source:
North American journal of fisheries management 2013 v.33 no.3 pp. 468-481
ISSN:
1548-8675
Subject:
Morone saxatilis; body fat; condition factor; ecosystems; fish; fisheries; fisheries management; lipid content; lipids; models; muscles; nutrition assessment; nutritional status; provenance; proximate composition; trophic relationships; Chesapeake Bay
Abstract:
... The assessment of the nutritional status of fish is a central requirement of fisheries management. However, there has been little consensus on the appropriate indicator to use, and even less effort toward defining biological thresholds and reference points. With current efforts to manage fisheries in an ecosystem context, environmental effects and trophic relationships need to be considered and ap ...
DOI:
10.1080/02755947.2013.763876

5. Biological response of high-back crucian carp (Carassius auratus) during different life stages to wastewater treatment plant effluent

Author:
Renmin Wang; Jingliang Liu; Xiaoxia Yang; Chan Lin; Bin Huang; Wei Jin; Xuejun Pan
Source:
Environmental science and pollution research international 2013 v.20 no.12 pp. 8612-8620
ISSN:
0944-1344
Subject:
Carassius auratus; adverse effects; chronic exposure; condition factor; endocrine-disrupting chemicals; estrogenic properties; estrogens; fish; fish health; gonadosomatic index; gynogenesis; hepatosomatic index; hypertrophy; liver; seasonal variation; spawning; vitellogenin; wastewater treatment
Abstract:
... This study presents the adverse effects of endocrine disrupting chemicals (EDCs) in effluent of wastewater treatment plants (WwTPs) on fish health. A study of chronic exposure to WwTPs effluent for 10 months was undertaken in high-back crucian carp (Carassius auratus) during different life stages, covering early-life-stage (ELS), prespawning period, and postspawning period. Condition factor (CF), ...
DOI:
10.1007/s11356-013-1817-4
PubMed:
23695857

6. Biomarker responses and morphological effects in juvenile tilapia Oreochromis mossambicus following sequential exposure to the organophosphate azinphos-methyl

Author:
Martine S. Jordaan; Sophié A. Reinecke; Adriaan J. Reinecke
Source:
Aquatic toxicology 2013 v.144-145 pp. 133-140
ISSN:
0166-445X
Subject:
Oreochromis mossambicus; acetylcholinesterase; acute toxicity; aquatic environment; azinphos-methyl; biomarkers; condition factor; early development; ecosystems; fish; food consumption; juveniles; nontarget organisms; reproduction; risk; spraying; South Africa
Abstract:
... Pesticides are contaminants of aquatic environments. Such ecosystems in the Western Cape, South Africa are at risk as most organophosphates are highly toxic to fish and other aquatic organisms. The objective of this experimental study was firstly to determine the acute toxicity of azinphos-methyl (AZP) to juvenile fish (Oreochromis mossambicus) and, secondly, to investigate the effects of repeated ...
DOI:
10.1016/j.aquatox.2013.10.007
PubMed:
24177216

7. Brazilian catfish parasitized by Epistylis sp. (Ciliophora, Epistylididae), with description of parasite intensity score

Author:
Santiago Benites de Pádua; Márcia Mayumi Ishikawa; Arlene Sobrinho Ventura; Gabriela Tomas Jerônimo; Maurício Laterça Martins; Luiz Eduardo Roland Tavares
Source:
Parasitology research 2013 v.112 no.1 pp. 443-446
ISSN:
0932-0113
Subject:
Ciliophora; Pseudoplatystoma corruscans; catfish; condition factor; emerging diseases; farmed fish; females; fish diseases; host-parasite relationships; hybrids; parasites; parasitism
Abstract:
... The determination of mean intensity of parasitism for colony-forming sessile protozoan such as Epistylis has been a great problem in parasitological studies. Some alternatives have been proposed by researchers for laboratory and field conditions. This study describes the criteria to establish the parasitic intensity score for epistylidid infestation in fish. Parasite distribution and the host-para ...
DOI:
10.1007/s00436-012-3069-5
PubMed:
22890898

8. Condition factor and diet of the catfish Loricariichthys castaneus (Castelnau, 1855): gender differences in three tropical reservoirs

Author:
Gustavo Luiz Ferreira; Vanessa Guimarães Lopes; José Henrique Cantarino Gomes; Christina Wyss Castelo Branco
Source:
Studies on neotropical fauna and environment 2013 v.48 no.3 pp. 190-198
ISSN:
1744-5140
Subject:
breeding; catfish; condition factor; diet; digestive system; ecosystems; fauna; females; foraging; gender differences; males; starvation; tropics
Abstract:
... Condition factor and diet of male and female of Loricariichthys castaneus were studied in three tropical reservoirs in which it is the most abundant species of fish. The females had higher condition factors than males in all three environments, but their diet differed from males only in the best-preserved ecosystem (Lajes Reservoir). Loricariichthys castaneus was considered as detritivorous-omnivo ...
DOI:
10.1080/01650521.2014.890849

9. Controlled reproduction in the wild European eel (Anguilla anguilla): two populations compared

Author:
Oliviero Mordenti; Andrea Di Biase; Giuseppe Bastone; Rubina Sirri; Annalisa Zaccaroni; Albamaria Parmeggiani
Source:
Aquaculture international 2013 v.21 no.5 pp. 1045-1063
ISSN:
0967-6120
Subject:
Anguilla anguilla; age determination; body length; body weight; condition factor; eel; eggs; estradiol; females; gonadosomatic index; larvae; lipid content; morphometry; ovulation; population characteristics; reproductive performance; spawning; testosterone; Adriatic Sea
Abstract:
... This study aimed to describe the response variability of female silver eels in terms of gonad development and eggs production to a standardized gonadotropic treatment (Carp pituitary extracts—CPE), and to relate this variability to population characteristics. For this purpose, sexual maturation, ovulation, and fertilization were induced in two eel populations coming from different locations in Adr ...
DOI:
10.1007/s10499-012-9611-8

10. Decline in growth rate of juvenile European plaice (Pleuronectes platessa) during summer at nursery beaches along the west coast of Scotland

Author:
Benjamin J. Ciotti; Timothy E. Targett; Michael T. Burrows
Source:
Canadian journal of fisheries and aquatic sciences 2013 v.70 no.5 pp. 720-734
ISSN:
1205-7533
Subject:
Crangon crangon; Pleuronectes platessa; allometry; beaches; body size; chemical composition; coasts; condition factor; diet; energy; energy content; juveniles; morphometry; shrimp; summer; temperature; Scotland
Abstract:
... This study concludes that declines in growth rates of young-of-the-year European plaice (Pleuronectes platessa) (YOY plaice) during summer vary spatially and between years and that these dynamics are not driven by temperature, body size, or competition. RNA-predicted growth rates of YOY plaice on the west coast of Scotland declined linearly between mid-July and mid-September, with faster declines ...
DOI:
10.1139/cjfas-2012-0331

11. Determination of Lmax for Atlantic Bluefin Tuna, Thunnus thynnus (L.), from Meta-Analysis of Published and Available Biometric Data

Author:
José L. Cort; Simeon Deguara; Txema Galaz; Begonya Mèlich; Iñaki Artetxe; Igor Arregi; John Neilson; Irene Andrushchenko; Alex Hanke; Miguel Neves dos Santos; Vicente Estruch; Molly Lutcavage; Jessica Knapp; Guillermo Compeán-Jiménez; Rafael Solana-Sansores; Antonio Belmonte; David Martínez; Corrado Piccinetti; Ai Kimoto; Piero Addis; Marta Velasco; José M. De la Serna; Dolores Godoy; Tevfik Ceyhan; Işik Oray; Saadet Karakulak; Leif Nøttestad; Antonio López; Oriol Ribalta; Noureddine Abid; M’Hamed Idrissi
Source:
Reviews in fisheries science 2013 v.21 no.2 pp. 181-212
ISSN:
1547-6553
Subject:
Thunnus thynnus; business enterprises; condition factor; databases; equations; fisheries; meta-analysis; statistics
Abstract:
... A meta-analysis of the straight fork lengths (herewith abbreviated as L) of 2,458,028 Atlantic bluefin tuna, Thunnus thynnus (L.), taken from 224 scientific publications and unpublished L data from scientific organizations and fishing companies spanning most of the known Atlantic and Mediterranean Atlantic bluefin tuna fisheries dating from 1605 to 2011, give L values ranging from Lₘᵢₙ = 20 cm and ...
DOI:
10.1080/10641262.2013.793284

12. Dietary galactooligosaccharide affects intestinal microbiota, stress resistance, and performance of Caspian roach (Rutilus rutilus) fry

Author:
Seyed Hossein Hoseinifar; Mohsen Khalili; Hosseinali Khoshbavar Rostami; M. Ángeles Esteban
Source:
Fish & shellfish immunology 2013 v.35 no.5 pp. 1416-1420
ISSN:
1050-4648
Subject:
Rutilus rutilus; body composition; condition factor; fish; food conversion; growth performance; intestinal microorganisms; lactic acid bacteria; prebiotics; salt stress; salt tolerance; specific growth rate; stress tolerance; survival rate; weight gain; Caspian Sea
Abstract:
... The aim of this study was to assess the effects of galactooligosaccharide (GOS), on the growth performance, stress resistance and intestinal microbiota of Caspian roach (Rutilus rutilus) fry. Specimens (1.36 ± 0.03 g) were fed either a basal control diet (0% GOS, non-supplemented) or the basal diet supplemented with 1% and 2% of GOS. After 7 weeks of the feeding trials, growth factors (final weigh ...
DOI:
10.1016/j.fsi.2013.08.007

13. Dietary synbiotic application modulates Atlantic salmon (Salmo salar) intestinal microbial communities and intestinal immunity

Author:
A. Abid; S.J. Davies; P. Waines; M. Emery; M. Castex; G. Gioacchini; O. Carnevali; R. Bickerdike; J. Romero; D.L. Merrifield
Source:
Fish & shellfish immunology 2013 v.35 no.6 pp. 1948-1956
ISSN:
1050-4648
Subject:
Pediococcus acidilactici; Salmo salar; Toll-like receptor 3; bacteria; blood serum; condition factor; diet; digesta; feed conversion; fructooligosaccharides; gene expression regulation; genes; growth performance; histology; innate immunity; interleukin-1beta; interleukin-8; intestinal microorganisms; intestines; leukocytes; lysozyme; microbial communities; probiotics; quantitative polymerase chain reaction; salmon; tumor necrosis factor-alpha; villi
Abstract:
... A feeding trial was conducted to determine the effect of dietary administration of Pediococcus acidilactici MA18/5M and short chain fructooligosaccharides (scFOS) on Atlantic salmon (Salmo salar L.) intestinal health. Salmon (initial average weight 250 g) were allocated into triplicate sea pens and were fed either a control diet (commercial diet: 45% protein, 20% lipid) or a synbiotic treatment di ...
DOI:
10.1016/j.fsi.2013.09.039

14. Differential gene expression associated with dietary methylmercury (MeHg) exposure in rainbow trout (Oncorhynchus mykiss) and zebrafish (Danio rerio)

Author:
Qing Liu; Niladri Basu; Giles Goetz; Nan Jiang; Reinhold J. Hutz; Peter J. Tonellato; Michael J. Carvan III
Source:
Ecotoxicology 2013 v.22 no.4 pp. 740-751
ISSN:
0963-9292
Subject:
Danio rerio; Oncorhynchus mykiss; RNA; adults; atomic absorption spectrometry; biomarkers; condition factor; foods; gene expression regulation; genes; glutathione transferase; homeostasis; methylmercury compounds; microarray technology; mortality; muscle contraction; protein binding; sublethal effects; trout
Abstract:
... The objective of this study was to identify and evaluate conserved biomarkers that could be used in most species of teleost fish at most life-stages. We investigated the effects of sublethal methylmercury (MeHg) exposure on developing rainbow trout and zebrafish. Juvenile rainbow trout and young adult zebrafish were fed food with MeHg added at 0, 0.5, 5, and 50 ppm. Atomic absorption spectrometry ...
DOI:
10.1007/s10646-013-1066-9
PubMed:
23529582
PubMed Central:
PMC3664064

15. Differential induction of enzymes and genes involved in lipid metabolism in liver and visceral adipose tissue of juvenile yellow catfish Pelteobagrus fulvidraco exposed to copper

Author:
Qi-Liang Chen; Zhi Luo; Ya-Xiong Pan; Jia-Lang Zheng; Qing-Ling Zhu; Lin-Dan Sun; Mei-Qin Zhuo; Wei Hu
Source:
Aquatic toxicology 2013 v.136-137 pp. 72-78
ISSN:
0166-445X
Subject:
lipid content; transcription factors; messenger RNA; malic enzyme; liver; NADP-glucose-6-phosphate dehydrogenase; lipoprotein lipase; isocitrate dehydrogenase; adipose tissue; gene expression; condition factor; Tachysurus fulvidraco; genes; hepatosomatic index; fatty-acid synthase; lipid metabolism; phosphogluconate dehydrogenase
Abstract:
... The present study was conducted to determine the mechanism of waterborne Cu exposure influencing lipid metabolism in liver and visceral adipose tissue (VAT) of juvenile yellow catfish Pelteobagrus fulvidraco. Yellow catfish were exposed to four waterborne copper (Cu) concentrations (2 (control), 24 (low), 71 (medium), 198 (high)μgCu/l, respectively) for 6 weeks. Waterborne Cu exposure had a negati ...
DOI:
10.1016/j.aquatox.2013.04.003
PubMed:
23660017

16. Distribution and relationships of As, Cd, Pb and Hg in freshwater fish from five French fishing areas

Author:
Laurent Noël; Rachida Chekri; Sandrine Millour; Mathilde Merlo; Jean-Charles Leblanc; Thierry Guérin
Source:
Chemosphere 2013 v.90 pp. 1900-1910
ISSN:
0045-6535
Subject:
Anguilla anguilla; Cyprinus carpio; Sander lucioperca; Silurus glanis; arsenic; body length; body weight; bream; cadmium; condition factor; freshwater fish; lead; mass spectrometry; mercury; microwave treatment; muscles; perch; pike; France
Abstract:
... The concentrations of arsenic, cadmium, mercury and lead in 149 muscle samples of eight freshwater fish species (European eel, bream, common carp, European catfish, roach, perch, pike and pikeperch) from five different French fishing areas from contaminated and control sites were measured by inductively coupled plasma mass spectrometry after microwave digestion under pressure. No significant corre ...
DOI:
10.1016/j.chemosphere.2012.10.015
PubMed:
23177713

17. Effect of Dietary n‐3 highly unsaturated fatty acids on Growth, Body Composition and Fatty Acid Profiles of Juvenile Black Seabream, Acanthopagrus schlegeli (Bleeker)

Author:
Jingjing Ma; Qingjun Shao; Zirong Xu; Fan Zhou
Source:
Journal of the World Aquaculture Society 2013 v.44 no.3 pp. 311-325
ISSN:
0893-8849
Subject:
Acanthopagrus schlegelii schlegelii; body composition; condition factor; correlation; diet; docosahexaenoic acid; eicosapentaenoic acid; fatty acid composition; fatty-acid synthase; fish; hepatosomatic index; highly unsaturated fatty acids; hormones; lipid content; liver; muscles; proximate composition; triacylglycerol lipase; weight gain
Abstract:
... An 8‐wk feeding trial was conducted to investigate the effects of dietary n‐3 highly unsaturated fatty acids (n‐3 HUFA) on growth, body composition, and fatty acid profiles of juvenile Acanthopagrus schlegeli. Three replicate groups of fish (initial mean weight: 8.08 ± 0.09 g, mean ± SD) were fed diets with different levels of n‐3 HUFA (0.76%, HUFA₀ .₇₆; 0.83%, HUFA₀ .₈₃; 0.90%, HUFA₀ .₉₀; 0.97%, ...
DOI:
10.1111/jwas.12032

18. Effect of autoclaved Ulva meal on growth performance, nutrient utilization and fatty acid profile of rainbow trout, Oncorhynchus mykiss

Author:
Betül Güroy; Sebahattin Ergün; Daniel L. Merrifield; Derya Güroy
Source:
Aquaculture international 2013 v.21 no.3 pp. 605-615
ISSN:
0967-6120
Subject:
Oncorhynchus mykiss; Ulva; animal growth; body composition; condition factor; digestibility; docosapentaenoic acid; eicosapentaenoic acid; experimental diets; fatty acid composition; feed conversion; feeding level; fish feeding; growth performance; hepatosomatic index; muscles; omega-3 fatty acids
Abstract:
... A feeding trial was conducted to investigate the effects of the dietary incorporation of autoclaved and raw (non-autoclaved) Ulva meal on juvenile rainbow trout (Oncorhynchus mykiss) growth, nutrient utilization, body composition, diet digestibility and fatty acid composition. An algae-free control diet and four experimental diets with either 5 or 10 % inclusion levels of raw Ulva meal (5 % = RU5; ...
DOI:
10.1007/s10499-012-9592-7

19. Effect of different dietary protein and lipid levels on growth performance, body composition of juvenile red swamp crayfish (Procambarus clarkii)

Author:
Wei-Na Xu; Wen-Bin Liu; Mei-fang Shen; Gui-Feng Li; Ying Wang; Wei-wei Zhang
Source:
Aquaculture international 2013 v.21 no.3 pp. 687-697
ISSN:
0967-6120
Subject:
Procambarus clarkii; body composition; condition factor; crayfish; dietary fat; dietary protein; digestible protein; experimental diets; fish feeding; growth performance; hepatopancreas; lipid content; lipids; models; muscles; protein content; protein energy ratio; proteins; proximate composition; specific growth rate; weight gain
Abstract:
... We evaluated the effect of dietary protein and lipid on growth and body composition in juvenile red swamp crayfish (Procambarus clarkii). Nine groups of crayfish were fed nine experimental diets containing three levels of protein (24, 27, and 30 %) and three levels of lipid (4, 7, and 10 %) for 8 weeks. We used a 3 × 3 factorial model with four replicates and 12 crayfish (initial average weight, 2 ...
DOI:
10.1007/s10499-012-9603-8

20. Effects of Dietary Quercetin on Growth Performance, Serum Lipids Level and Body Composition of Tilapia (Oreochromis Niloticus)

Author:
Shao-Wei Zhai; Shu-Lan Liu
Source:
Italian journal of animal science 2013 v.12 no.4 pp. e85
ISSN:
1828-051X
Subject:
Oreochromis niloticus; blood serum; body composition; condition factor; crude protein; feed conversion; fish; growth performance; high density lipoprotein cholesterol; low density lipoprotein cholesterol; quercetin; specific growth rate; survival rate; triacylglycerols
Abstract:
... This trial was conducted to investigate the effects of supplementary quercetin on growth performance, serum lipids levels and whole fish body composition in tilapia (Oreochromis niloticus). Four hundred fish were randomly divided into five treatment groups with four replicates in each group and 20 fish in each replicate. The dietary quercetin levels of the five treatment groups were: 0 (control gr ...
DOI:
10.4081/ijas.2013.e85

21. Effects of Dietary Vitamin C and Soybean Lecithin in the Nutrition of Brown Bullhead (Ameiurus Nebulosus L.) Fingerlings

Author:
Ivica Aničić; Tomislav Treer; Daniel Matulić; Roman Safner; Tea Tomljanović; Marina Piria; Nikica Šprem
Source:
Italian journal of animal science 2013 v.12 no.2 pp. e27
ISSN:
1828-051X
Subject:
Ameiurus nebulosus; ascorbic acid; body composition; body weight; condition factor; diet; encapsulation; erythrocytes; feed conversion; growth performance; hematocrit; lecithins; liver; muscles; protein content; soybeans; specific growth rate
Abstract:
... The effects of different forms of vitamin C and soybean lecithin on growth performance, feed utilization and body composition of brown bullhead (Ameiurus nebulosus, Lesuer 1819) were evaluated during a 9-week growth trial. A special interest was to investigate a possible combine effect of these nutritional components. The diets used contained three forms of vitamin C (crystallized ascorbic acid, e ...
DOI:
10.4081/ijas.2013.e27

22. The Effects of Different Feed Enrichments on Survivorship and Growth of Early Juvenile Longsnout Seahorse, Hippocampus reidi

Author:
Nancy Kim Pham; Junda Lin
Source:
Journal of the World Aquaculture Society 2013 v.44 no.3 pp. 435-446
ISSN:
0893-8849
Subject:
Artemia; Copepoda; Isochrysis galbana; Rotifera; condition factor; hippocampus; live feeds; survival rate
Abstract:
... Culturing the longsnout seahorse, Hippocampus reidi, remains challenging because unlike most cultured seahorse species, Artemia is not an optimal first feed. Ideally, more nutritious live feeds such as wild plankton or copepods should be used, but are not always readily available. Therefore, facilities commonly utilize enriched rotifers. Numerous feed enrichment products exist, including Dan's Fee ...
DOI:
10.1111/jwas.12037

23. Effects of Flow Reduction on a Whitespotted Char Population in a Japanese Mountain Stream

Author:
Tomoyuki Nakamura
Source:
North American journal of fisheries management 2013 v.33 no.6 pp. 1142-1148
ISSN:
1548-8675
Subject:
Salvelinus leucomaenis leucomaenis; aggression; biomass; condition factor; fish; food availability; long term effects; stream flow; streams; Japan
Abstract:
... I evaluated the effects of long-term (about 270 d/year) and large-volume (83.3% at mean flow) reductions in stream flow on a population of Whitespotted Char Salvelinus leucomaenis . I compared a range of biological parameters (density, biomass, condition factor, and age composition) between populations of char in the free-flowing (above dam) and regulated (below dam) sections of a Japanese mountai ...
DOI:
10.1080/02755947.2013.826757

24. Effects of butachlor on reproduction and hormone levels in adult zebrafish (Danio rerio)

Author:
Juhua Chang; Shaoying Liu; Shengli Zhou; Minghua Wang; Guonian Zhu
Source:
Experimental and toxicologic pathology 2013 v.65 no.1-2 pp. 205-209
ISSN:
0940-2993
Subject:
Danio rerio; adults; butachlor; condition factor; estradiol; exposure duration; fecundity; females; gonadosomatic index; liver; males; risk; testosterone; triiodothyronine; vitellogenin; China
Abstract:
... Butachlor, a chloracetamide herbicide, is widely used in China. In the present study, paired adult male and female zebrafish (Danio rerio) were exposed to various concentrations of butachlor (0, 25, 50 and 100μg/L) for 30 days, and the effects on reproduction and endocrine disruption were evaluated using fecundity, condition factor (CF), gonadosomatic index (GSI), liver somatic index (LSI), plasma ...
DOI:
10.1016/j.etp.2011.08.007

25. Effects of cadmium at sub-lethal concentration on growth and biochemical parameters in rainbow trout (Oncorhynchus mykiss)

Author:
M Saeed Heydarnejad; Mozhdeh Khosravian-Hemamai; Amin Nematollahi
Source:
Irish veterinary journal 2013 v.66 no.1 pp. 49
ISSN:
2046-0481
Subject:
Oncorhynchus mykiss; alanine transaminase; alkaline phosphatase; aspartate transaminase; biomarkers; blood chemistry; blood serum; cadmium; cholesterol; condition factor; fish health; food conversion; glucose; heavy metals; specific growth rate; triacylglycerols; trout; weight gain
Abstract:
... Cadmium (Cd), as one of heavy metals and an environmental stressor, may alter many physiological processes like growth and serum parameters in fish. The main objective of this study was to determine the effects of cadmium at sub-lethal concentrations (1 and 3 μg/l) on growth and serum biochemical parameters including enzymes, i.e. alkaline phosphatase (ALP), aspartate aminotransferase (AST) and al ...
DOI:
10.1186/2046-0481-66-11
PubMed:
23782857
PubMed Central:
PMC3735419

26. Effects of cysteamine on mRNA levels of growth hormone and its receptors and growth in orange-spotted grouper (Epinephelus coioides)

Author:
Yun Li; Xiaochun Liu; Yong Zhang; Xilan Ma; Haoran Lin
Source:
Fish physiology and biochemistry 2013 v.39 no.3 pp. 605-613
ISSN:
0920-1742
Subject:
DNA; Epinephelus coioides; additive effect; condition factor; cysteamine; diet; disulfide bonds; feed additives; feed conversion; fish; gene expression; gonadotropin-releasing hormone; hormone receptors; messenger RNA; muscles; somatostatin; somatotropin; synthetic hormones
Abstract:
... Effects of cysteamine (CS) on growth hormone (GH) mRNA, two types of growth hormone receptor (GHR) mRNAs and growth rate in orange-spotted grouper (Epinephelus coioides) were investigated. CS could cause a modification in the structure of somatostatin, which is the most important neuroendocrine inhibitor of basal and stimulated growth hormone synthesis and release, and renders it nonimmunoreactive ...
DOI:
10.1007/s10695-012-9723-0
PubMed:
23064985

27. Effects of dietary hydroxyproline on growth performance, body composition, hydroxyproline and collagen concentrations in tissues in relation to prolyl 4-hydroxylase α(I) gene expression of juvenile turbot, Scophthalmus maximus L. fed high plant protein diets

Author:
Kaikai Zhang; Qinghui Ai; Kangsen Mai; Wei Xu; Zhiguo Liufu; Yanjiao Zhang; Mo Peng
Source:
Aquaculture 2013 v.404-405 pp. 77-84
ISSN:
0044-8486
Subject:
high protein diet; lipids; Scophthalmus maximus; hepatosomatic index; hydroxyproline; dietary supplements; fish feeding; turbot; gene expression; crude protein; muscle tissues; messenger RNA; body weight; feed conversion; muscles; collagen; condition factor; growth performance; vertebrae; experimental diets; body composition; ash content; procollagen-proline dioxygenase
Abstract:
... The present study was conducted to evaluate the effects of dietary hydroxyproline (Hyp) on survival, growth, feed utilization, body composition, Hyp and collagen concentrations in tissues, and prolyl 4-hydroxylase α(I) (P4H α(I)) gene expression of juvenile turbot (initial body weight 8.11±0.01g) fed high plant protein diets. Seven isoproteic (50% crude protein) and isolipidic (12% crude lipid) ex ...
DOI:
10.1016/j.aquaculture.2013.04.025

28. Effects of egg size, maternal age and temperature on egg, viability of farmed Arctic charr

Author:
Henrik Jeuthe; Eva Brännäs; Jan Nilsson
Source:
Aquaculture 2013 v.408-409 pp. 70-77
ISSN:
0044-8486
Subject:
Salvelinus alpinus; autumn; condition factor; egg incubation; eggs; environmental factors; females; heat treatment; summer; viability; water temperature
Abstract:
... The present study aims to analyze several biological and environmental variables to explain the unpredictable reproductive success at the main aquaculture facility involved in the Swedish Arctic charr breeding program. Data from 540 egg batches, collected from the years 2000 to 2011, were analyzed for the effects of factors such as temperature conditions, female age and egg size on egg viability ( ...
DOI:
10.1016/j.aquaculture.2013.05.034

29. Effects of naphthenic acid exposure on development and liver metabolic processes in anuran tadpoles

Author:
Steven D. Melvin; Chantal M. Lanctôt; Paul M. Craig; Thomas W. Moon; Kerry M. Peru; John V. Headley; Vance L. Trudeau
Source:
Environmental pollution 2013 v.177 pp. 22-27
ISSN:
0269-7491
Subject:
Lithobates; aquatic environment; cholesterol; condition factor; energy metabolism; glucose; glycogen; glycolysis; guidelines; hepatotoxicity; industrial applications; liver; liver function; naphthenates; oil sands; tadpoles; triacylglycerols; wastewater
Abstract:
... Naphthenic acids (NA) are used in a variety of commercial and industrial applications, and are primary toxic components of oil sands wastewater. We investigated developmental and metabolic responses of tadpoles exposed to sub-lethal concentrations of a commercial NA blend throughout development. We exposed Lithobates pipiens tadpoles to 1 and 2 mg/L NA for 75 days and monitored growth and developm ...
DOI:
10.1016/j.envpol.2013.02.003
PubMed:
23466728

30. Effects of varying levels of dietary l-histidine on growth, feed conversion, protein gain, histidine retention, hematological and body composition in fingerling stinging catfish Heteropneustes fossilis (Bloch)

Author:
Farhat; Mukhtar A. Khan
Source:
Aquaculture 2013 v.404-405 pp. 130-138
ISSN:
0044-8486
Subject:
Heteropneustes fossilis; body composition; catfish; condition factor; dietary protein; feed conversion; feeds; fingerlings; fish feeding; hemoglobin; hepatosomatic index; histidine; oxygen; protein content; regression analysis; salinity; satiety; stinging; water temperature
Abstract:
... Heteropneustes fossilis is distributed in most of the Southeast Asian countries. It is a promising species for aquaculture due to its high protein and iron content, ability to withstand shifts in salinity and temperature, and survival in oxygen depleted water. In view of the above, this study was undertaken to evaluate the effects of varying levels of dietary l-histidine on growth, protein gain, h ...
DOI:
10.1016/j.aquaculture.2013.04.020

31. Egg production of turbot, Scophthalmus maximus, in the Baltic Sea

Author:
Anders Nissling; Ann-Britt Florin; Anders Thorsen; Ulf Bergström
Source:
Journal of sea research 2013 v.84 pp. 77-86
ISSN:
1385-1101
Subject:
Scophthalmus maximus; animal ovaries; biogeography; brackish water; coasts; condition factor; egg production; eggs; environmental factors; fecundity; fisheries; maturity stage; oocytes; otoliths; progeny; regression analysis; salinity; spawning; turbot; Baltic Sea
Abstract:
... In the brackish water Baltic Sea turbot spawn at ~6–9psu along the coast and on offshore banks in ICES SD 24–29, with salinity influencing the reproductive success. The potential fecundity (the stock of vitellogenic oocytes in the pre-spawning ovary), egg size (diameter and dry weight of artificially fertilized 1-day-old eggs) and gonad dry weight were assessed for fish sampled in SD 25 and SD 28. ...
DOI:
10.1016/j.seares.2012.07.009

32. Environmental estrogens in an urban aquatic ecosystem: II. Biological effects

Author:
Melissa M. Schultz; Thomas A. Minarik; Dalma Martinovic-Weigelt; Erin M. Curran; Stephen E. Bartell; Heiko L. Schoenfuss
Source:
Environment international 2013 v.61 pp. 138-149
ISSN:
0160-4120
Subject:
aquatic ecosystems; aquatic environment; condition factor; effluents; egg yolk; estrogens; experimental design; fish; gonadosomatic index; habitats; hepatosomatic index; histopathology; hydrology; liquid chromatography; males; monitoring; quantitative analysis; reproduction; spring; tandem mass spectrometry; urbanization; vitellogenin; water reuse; Illinois
Abstract:
... Urban aquatic ecosystems are often overlooked in toxicological studies even though they serve many ecosystem functions and sustain fish populations despite large-scale habitat alterations. However, urban fish populations are likely exposed to a broad range of stressors, including environmental estrogens (EEs) that may affect anatomy, physiology and reproduction of exposed fish. Although significan ...
DOI:
10.1016/j.envint.2013.08.006

33. Enzymatic GST levels and overall health of mullets from contaminated Brazilian Lagoons

Author:
F.F. Bastos; R.A. Hauser-Davis; S.A.L. Tobar; R.C. Campos; R.L. Ziolli; V.L.F. Cunha Bastos; J. Cunha Bastos
Source:
Aquatic toxicology 2013 v.126 pp. 414-423
ISSN:
0166-445X
Subject:
Mugilidae; biomarkers; condition factor; cytosol; glutathione transferase; isozymes; liver; mullet; pH; poisoning; pollution; proteins; Brazil
Abstract:
... Glutathione S-transferase (GST) assays in non-mammalian organisms are usually conducted inappropriately, since no previous standardization of the optimal concentrations of proteins and substrates and adequate pH is conducted. Standardization is a key task to adjust enzyme assays at their kinetically correct maximal initial velocities, if one wants these velocities to indicate the amount of enzyme ...
DOI:
10.1016/j.aquatox.2012.08.020
PubMed:
23010391

34. Factors affecting metribuzin retention in Algerian soils and assessment of the risks of contamination

Author:
Ouzna Oukali-Haouchine; Enrique Barriuso; Yamina Mayata; Khadija M. Moussaoui
Source:
Environmental monitoring and assessment 2013 v.185 no.5 pp. 4107-4115
ISSN:
0167-6369
Subject:
NPK fertilizers; adsorption; agricultural soils; condition factor; desorption; groundwater contamination; metribuzin; organic soils; risk assessment; risk management; soil organic matter; soil pH; soil pollution; sorption isotherms
Abstract:
... Metribuzin is a widely used herbicide around the world but it could lead to soil and water contamination. Metribuzin retention on a silty–clay agricultural soil of Algeria was studied in laboratory batch experiments to assess the contamination risk of the groundwater. Factors conditioning the fate of metribuzin were investigated: soil nature, metribuzin formulation, NPK fertilizer, and soil pH. Fr ...
DOI:
10.1007/s10661-012-2853-0
PubMed:
22930189

35. Gene transcription reflects poor health status of resident European eel chronically exposed to environmental pollutants

Author:
G.E. Maes; J.A.M. Raeymaekers; B. Hellemans; C. Geeraerts; K. Parmentier; L. De Temmerman; F.A.M. Volckaert; C. Belpaire
Source:
Aquatic toxicology 2013 v.126 pp. 242-255
ISSN:
0166-445X
Subject:
eel; DDT (pesticide); diadromous fish; polychlorinated biphenyls; watersheds; genes; Anguilla anguilla; transcriptome; metals; gene expression regulation; chronic exposure; energy; bioaccumulation; arsenic; health status; aerobiosis; pollutants; condition factor; transcription (genetics); liver; long term effects; metallothionein; habitats; environmental monitoring
Abstract:
... Understanding the effects of chronic exposure to pollutants on the genome and transcriptome of diadromous fish populations is crucial for their resilience under combined anthropogenic and environmental selective pressures. The catadromous European eel (Anguilla anguilla L.) has suffered a dramatic decline in recruitment for three decades, necessitating a thorough assessment of the transcriptional ...
DOI:
10.1016/j.aquatox.2012.11.006
PubMed:
23247545

36. Genetic structure and heterozygosity–fitness correlation in young-of-the-year sole (Solea solea L.) inhabiting three contaminated West-European estuaries

Author:
B. Guinand; M.A. Fustier; M. Labonne; E. Jourdain; I. Calvès; L. Quiniou; F. Cerqueira; J. Laroche
Source:
Journal of sea research 2013 v.80 pp. 35-49
ISSN:
1385-1101
Subject:
Solea solea; body size; condition factor; estuaries; genes; genetic markers; genetic variation; loci; marine resources; metallothionein; pollution; English Channel; Portugal
Abstract:
... Anthropogenic pressures in estuaries may impair not only the fitness of organisms and the evolutionary processes necessary to the survival, but also the management of exploited marine resources. In order to assess these impacts, phenotypic and genotypic data pertaining to young-of-the-year (YOY) sole (Solea solea) were screened in differentially contaminated North East Atlantic estuaries ranging f ...
DOI:
10.1016/j.seares.2013.02.006

37. Genetically based population divergence in overwintering energy mobilization in brook charr (Salvelinus fontinalis)

Author:
Amélie Crespel; Louis Bernatchez; Dany Garant; Céline Audet
Source:
Genetica 2013 v.141 no.1-3 pp. 51-64
ISSN:
0016-6707
Subject:
Salvelinus fontinalis; condition factor; energy intake; fish; glycogen; heritability; hybrids; lipids; liver; overwintering; phenotypic correlation; visceral fat; winter
Abstract:
... Investigating the nature of physiological traits potentially related to fitness is important towards a better understanding of how species and/or populations may respond to selective pressures imposed by contrasting environments. In northern species in particular, the ability to mobilize energy reserves to compensate for the low external energy intake during winter is crucial. However, the phenoty ...
DOI:
10.1007/s10709-013-9705-x
PubMed:
23412995

38. Health, condition, and survival of creek chub (Semotilus atromaculatus) across a gradient of stream habitat quality following an experimental cortisol challenge

Author:
Alexander Nagrodski; Cory D. Suski; Steven J. Cooke
Source:
Hydrobiologia 2013 v.702 no.1 pp. 283-296
ISSN:
0018-8158
Subject:
Semotilus atromaculatus; agricultural watersheds; blood glucose; condition factor; cortisol; fish; fish health; gonadosomatic index; habitat destruction; habitats; hepatosomatic index; intraperitoneal injection; land use; mortality; parasites; placebos; streams; urbanization
Abstract:
... Urbanization and agricultural practices can lead to alterations in stream habitat quality. However, there have been few attempts to understand if these alterations influence the health and condition of fish, or their ability to respond to multiple stressors. This study examines a sentinel fish in streams adjacent to different types of land-use practices and how they respond to an experimental stre ...
DOI:
10.1007/s10750-012-1331-6

39. Hematologic and hepatic responses of the freshwater fish Hoplias malabaricus after saxitoxin exposure

Author:
Helena C. Silva de Assis; Cesar A. da Silva; Eliane T. Oba; Juliana H. Pamplona; Maritana Mela; Halina B. Doria; Izonete Cristina Guiloski; Wanessa Ramsdorf; Marta Margarete Cestari
Source:
Toxicon 2013 v.66 pp. 25-30
ISSN:
0041-0101
Subject:
Astyanax; Cylindrospermopsis raciborskii; DNA damage; Hoplias malabaricus; bioaccumulation; bioassays; biomarkers; blood; catalase; condition factor; freshwater; freshwater fish; genotoxicity; glutathione; glutathione peroxidase; glutathione transferase; hemoglobin; hepatosomatic index; liver; neurotoxicity; reactive oxygen species; saxitoxins; superoxide dismutase
Abstract:
... The bioaccumulation of saxitoxins (STX) in the trophic chain, mainly in freshwater, are not completely known. This work aimed to elucidate the effects of STX on Hoplias malabaricus through trophic bioassay. The fish were fed once every five days with Astyanax sp. before being subjected to an intraperitoneal inoculation with the lysate of Cylindrospermopsis raciborskii culture containing 97% STX an ...
DOI:
10.1016/j.toxicon.2013.01.012

40. Heritability of harvest growth traits and genotype–environment interactions in barramundi, Lates calcarifer (Bloch)

Author:
Jose A. Domingos; Carolyn Smith-Keune; Nicholas Robinson; Shannon Loughnan; Paul Harrison; Dean R. Jerry
Source:
Aquaculture 2013 v.402-403 pp. 66-75
ISSN:
0044-8486
Subject:
DNA; Lates calcarifer; additive effect; breeding; condition factor; fish; fish cages; fish culture; freshwater; genetic correlation; genotype-environment interaction; growth traits; hatching; heritability; microsatellite repeats; parentage; ponds; progeny; rearing; recirculating aquaculture systems; seawater; spawning; tanks; Asia; Australia
Abstract:
... Due to its popularity as a food fish, rapid growth and wide environmental tolerances, barramundi, Lates calcarifer, production levels are increasing worldwide and breeding programs are currently being considered and implemented throughout Asia and Australia. However, for selective breeding programs to be effective, it is essential to have information on genetic parameters such as heritability and ...
DOI:
10.1016/j.aquaculture.2013.03.029

41. Hock lesion epidemiology in cubicle housed dairy cows across two breeds, farming systems and countries

Author:
Christine Brenninkmeyer; Sabine Dippel; Jan Brinkmann; Solveig March; Christoph Winckler; Ute Knierim
Source:
Preventive veterinary medicine 2013 v.109 no.3-4 pp. 236-245
ISSN:
0167-5877
Subject:
Holstein; Simmental; condition factor; correlation; cross-sectional studies; dairy cows; dairy farming; epidemiology; farming systems; farms; hardness; herds; hock; lameness; linear models; regression analysis; risk factors; variance; Austria; Germany
Abstract:
... This cross-sectional study examined various aspects of cubicle design and management in terms of their potential as risk factors for hock lesions, using an epidemiological approach. Cubicle dairy farms in Germany and Austria with Holstein Friesian or Simmental cows were visited during the winter housing season. 105 farms and 3691 cows were included in the analysis which consisted of three steps: b ...
DOI:
10.1016/j.prevetmed.2012.10.014
PubMed:
23174217

42. In situ studies on growth, oxidative stress responses, and gene expression of juvenile bighead carp (Hypophthalmichthys nobilis) to eutrophic lake water dominated by cyanobacterial blooms

Author:
Hongjie Sun; Wenqian Wang; Linlin Geng; Yafen Chen; Zhou Yang
Source:
Chemosphere 2013 v.93 pp. 421-427
ISSN:
0045-6535
Subject:
lakes; catalase; body weight; glutathione transferase; malondialdehyde; stress response; superoxide dismutase; biological hazards; Hypophthalmichthys nobilis; condition factor; gene expression; genes; body length; growth performance; specific growth rate; heat-shock protein 70; oxidative stress; juveniles
Abstract:
... Cyanobacterial blooms have received increasing attention as a public biohazard for human and animal health. To assess the effect of cyanobacteria-dominant lake water on juvenile fish, we measured the responses of specific growth rate, condition factor, body weight and body length, oxidative stress, and related gene expression of juvenile bighead carp Hypophthalmichthys nobilis exposed to in situ e ...
DOI:
10.1016/j.chemosphere.2013.05.022
PubMed:
23769464

43. Influence of light colours on growth and stress response of rainbow trout (Oncorhynchus mykiss) under laboratory conditions

Author:
M. Saeed Heydarnejad; M. Parto; A.A. Pilevarian
Source:
Journal of animal physiology and animal nutrition 2013 v.97 no.1 pp. 67-71
ISSN:
0931-2439
Subject:
Oncorhynchus mykiss; aquariums; body weight; color; condition factor; cortisol; feed conversion; fish; glass; lighting; specific growth rate; stress response
Abstract:
... The influence of light colours on growth and stress response in rainbow trout Oncorhyncus mykiss (15.16 ± 0.29 cm; 32.27 ± 1.18 g) was studied. Fish were reared in 16 glass aquaria (140 × 30 × 80 cm) each with 12 fish under one of four different lighting spectra: yellow (546 nm), red (605 nm), blue (470 nm) and white (full spectrum, control). Experiments lasted 125 days. The stress response was ev ...
DOI:
10.1111/j.1439-0396.2011.01243.x
PubMed:
22017568

44. Inhibition of Myostatin Gene Expression in Skeletal Muscle of Fish by In Vivo Electrically Mediated dsRNA and shRNAi Delivery

Author:
Genciana Terova; Simona Rimoldi; Giovanni Bernardini; Marco Saroglia
Source:
Molecular biotechnology 2013 v.54 no.2 pp. 673-684
ISSN:
1073-6085
Subject:
RNA interference; plasmids; genes; mammals; Danio rerio; bass; adults; genetically modified organisms; phenotype; livestock production; skeletal muscle; gene expression; Dicentrarchus labrax; body weight; muscles; mutation; condition factor; growth performance; double-stranded RNA; myostatin; electroporation; proteins; rearing; double muscling; reverse transcriptase polymerase chain reaction
Abstract:
... Myostatin (MSTN), previously referred to as growth differentiation factor 8 (GDF8), is a negative regulator of skeletal muscle growth. In accordance with this role, natural mutations that inactivate the gene disrupting the function of the protein are associated with excessive muscle growth and double-muscling phenotype in several mammalian species. Recent studies using transgenic MSTN deficient ze ...
DOI:
10.1007/s12033-012-9609-5
PubMed:
23065364

45. Interference of cage fish farm on diet, condition factor and numeric abundance on wild fish in a Neotropical reservoir

Author:
Igor P. Ramos; Heleno Brandão; Augusto S. Zanatta; Érica de O.P. Zica; Reinaldo J. da Silva; Daercy M.M. de Rezende-Ayroza; Edmir D. Carvalho
Source:
Aquaculture 2013 v.414-415 pp. 56-62
ISSN:
0044-8486
Subject:
aquatic ecosystems; cages; condition factor; diet; farming systems; fish culture; fish farms; fisheries; food waste; freshwater fish; nutritional status; organic matter; recycling; rivers; tropics; wild fish
Abstract:
... Historically, the ichthyofauna of large Brazilian rivers has been subject to anthropogenic interference, such as impoundments. Currently, cage fish farming systems are a new source of impact on aquatic ecosystems. The objective of this study was to characterise the impact of freshwater fish farms on the feeding of five species of Neotropical freshwater fish. Specimens of Astyanax altiparanae, Gale ...
DOI:
10.1016/j.aquaculture.2013.07.013

46. Lake Whitefish Diet, Condition, and Energy Density in Lake Champlain and the Lower Four Great Lakes following Dreissenid Invasions

Author:
Seth J. Herbst; J. Ellen Marsden; Brian F. Lantry
Source:
Transactions of the American Fisheries Society 2013 v.142 no.2 pp. 388-398
ISSN:
1548-8659
Subject:
Coregonus clupeaformis; Dreissena polymorpha; Mysis diluviana; condition factor; diet; energy; energy density; fish; fish eggs; freshwater fisheries; gillnets; lakes; mussels; spring; summer; winter; Lake Erie; Lake Huron; Lake Michigan; Lake Ontario; Michigan; Ontario
Abstract:
... Lake Whitefish Coregonus clupeaformis support some of the most valuable commercial freshwater fisheries in North America. Recent growth and condition decreases in Lake Whitefish populations in the Great Lakes have been attributed to the invasion of the dreissenid mussels, zebra mussels Dreissena polymorpha and quagga mussels D. bugensis , and the subsequent collapse of the amphipod, Diporeia , a o ...
DOI:
10.1080/00028487.2012.747991

47. Life‐cycle exposure to the estrogenic mycotoxin zearalenone affects zebrafish (Danio rerio) development and reproduction

Author:
Patrick Schwartz; Thomas D. Bucheli; Felix E. Wettstein; Patricia Burkhardt‐Holm
Source:
Environmental toxicology 2013 v.28 no.5 pp. 276-289
ISSN:
1520-4081
Subject:
Danio rerio; adults; body length; condition factor; drainage water; effluents; estrogenic properties; estrogens; exposure scenario; fecundity; females; fish; reproductive performance; risk; rivers; sex ratio; soil; vitellogenin; wastewater; zearalenone
Abstract:
... Zearalenone (ZON) is one of the worldwide most common mycotoxin and exhibits estrogenic activity in the range of natural steroid estrogens. The occurrence of ZON has been reported in soil, drainage water, wastewater effluents, and rivers, but its ecotoxicological effects on fish have hardly been investigated. The consequences of continuous long‐term ZON exposure, including a subsequent depuration ...
DOI:
10.1002/tox.20718
PubMed:
21695757

48. Long-term changes in fecundity of the Kutum, Rutilus frisii kutum Kamensky, 1901, in the Caspian Sea (Osteichthyes: Cyprinidae)

Author:
Hasan Fazli; Mohammad Ali Afraei Bandpei; Reza Pourgholam; Aboulghasem Roohi
Source:
Zoology in the Middle East 2013 v.59 no.1 pp. 51-58
ISSN:
2326-2680
Subject:
Rutilus kutum; condition factor; eggs; fecundity; females; fish; Caspian Sea
Abstract:
... Changes in length, weight and fecundity of mature females of the Kutum (Rutilus frisii kutum) were compared for the periods 1948–1950, 1974 and 2007 in Iranian waters of the Caspian Sea. The average fork length decreased from 54.1 over 44.7 to 43.9 cm and the average weight from 2181 over 1295 to 1210 g. However, the average condition factor has remained fairly constant and varied between 1.35 and ...
DOI:
10.1080/09397140.2013.795065

49. Maturation characteristics and life-history strategies of the Pacific lamprey, Entosphenus tridentatus

Author:
Benjamin J. Clemens; Stan van de Wetering; Stacia A. Sower; Carl B. Schreck
Source:
Canadian journal of zoology 2013 v.91 no.11 pp. 775-788
ISSN:
0008-4301
Subject:
Entosphenus tridentatus; adults; cluster analysis; condition factor; early development; fecundity; females; freshwater; gonadosomatic index; life history; lipids; liver; males; muscles; oocytes; spawning; spermatogonia; spermatozoa; vitellogenesis
Abstract:
... Lampreys (Petromyzontiformes) have persisted over millennia and now suffer a recent decline in abundance. Complex life histories may have factored in their persistence; anthropogenic perturbations in their demise. The complexity of life histories of lampreys is not understood, particularly for the anadromous Pacific lamprey, Entosphenus tridentatus Gairdner, 1836. Our goals were to describe the ma ...
DOI:
10.1139/cjz-2013-0114

50. Natural History of Ameerega flavopicta (Dendrobatidae) on an Island Formed by Três Marias Hydroelectric Reservoir in Southeastern Brazil

Author:
Lima Nathália G. S.; Eterovick Paula C.
Source:
Journal of Herpetology 2013 v.47 no.3 pp. 480-488
ISSN:
0022-1511
Subject:
Ameerega; Lepidoptera; breeding; condition factor; diet; dry season; frogs; habitats; natural history; tadpoles; vegetation; vocalization; wet season; Brazil
Abstract:
... We studied a population of Ameerega flavopicta on an island in southeastern Brazil that was formed during the filling of a reservoir in 1965. We studied frog condition factor, diet composition (through induced regurgitation), prey preferences (based on prey availability assessed at frogs' habitats), vocalizations, breeding period, and density. We conducted fieldwork monthly from July 2008 to March ...
DOI:
10.1670/11-218