U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Publication year rev 7987-2013 Remove constraint Publication year rev: 7987-2013 Subject term fecundity Remove constraint Subject term: fecundity
Start Over

Search

531  Search Results

« Previous | 1 - 20 of 531 |
Number of results to display per page

Search Results

1. A geostatistical approach to spatial density distributions of sika deer (Cervus nippon)

Author:
Hiroshi Kondoh; Toru Koizumi; Koichi Ikeda
Source:
Journal of forest research 2013 v.18 no.1 pp. 93-100
ISSN:
1610-7403
Subject:
Cervus nippon; adults; antlers; bark; browsing; deer; fecundity; forest damage; forests; geographic information systems; geostatistics; kriging; population density; population growth; population size; space and time; trees; wildlife; wildlife damage management; Japan
Abstract:
... Sika deer (Cervus nippon) cause serious damage to trees in Japanese forests. Browsing, bark stripping, and tree abrasion with antlers account for 50% of total wildlife damage over the past decade. The extent of forest damage depends on deer population density. We determined the spatial distribution of sika deer population density on Mt. Hiko (Fukuoka Prefecture, southwestern Japan). We also invest ...
DOI:
10.1007/s10310-011-0326-x

2. A stock–recruitment relationship based on pre-recruit survival, illustrated with application to spiny dogfish shark

Author:
Ian G. Taylor; Vladlena Gertseva; Richard D. Methot; Mark N. Maunder
Source:
Fisheries research 2013 v.142 pp. 15-21
ISSN:
0165-7836
Subject:
Squalus acanthias; eggs; fecundity; fisheries; models; progeny; sharks; spawning; Pacific Ocean
Abstract:
... Understanding the relationship between abundance of spawners and subsequent recruitment is one of the central issues in fisheries stock assessment. We developed a new, pre-recruit survival based stock–recruitment model that enables explicit modeling of survival between embryos and age 0 recruits, and allows the description of a wide range of pre-recruit survival curves. The model is especially use ...
DOI:
10.1016/j.fishres.2012.04.018

3. Acute and chronic toxicity study of the water accommodated fraction (WAF), chemically enhanced WAF (CEWAF) of crude oil and dispersant in the rock pool copepod Tigriopus japonicus

Author:
Kyun-Woo Lee; Won Joon Shim; Un Hyuk Yim; Jung-Hoon Kang
Source:
Chemosphere 2013 v.92 pp. 1161-1168
ISSN:
0045-6535
Subject:
Copepoda; acute toxicity; adults; chronic toxicity; fecundity; nauplii; oils; sex ratio; toxic substances; toxicity testing
Abstract:
... We determined the toxicity of the water accommodated hydrocarbon fraction (WAF), two chemically enhanced WAFs (CEWAFs; CEWAF-C, Crude oil+Corexit 9500 and CEWAF-H, Crude oil+Hiclean) of crude oil and two dispersants (Corexit 9500 and Hiclean) to the rock pool copepod Tigriopus japonicus. In the acute toxicity test, Corexit 9500 was the most toxic of all the chemicals studied. The nauplius stage of ...
DOI:
10.1016/j.chemosphere.2013.01.080
PubMed:
23466279

4. Acute toxicity and sublethal effects of methoxyfenozide and thiodicarb on survival, development and reproduction of Helicoverpa armigera (Lepidoptera: Noctuidae)

Author:
Moosa Saber; Ehsan Parsaeyan; Samad Vojoudi; Mohammad Bagheri; Ali Mehrvar; Shizuo George Kamita
Source:
Crop protection 2013 v.43 pp. 14-17
ISSN:
0261-2194
Subject:
Helicoverpa armigera; acute toxicity; adults; artificial diets; fecundity; females; insect pests; insecticides; instars; larvae; lethal concentration 50; methoxyfenozide; population dynamics; pupal development; sublethal effects; thiodicarb
Abstract:
... The cotton bollworm Helicoverpa armigera (Hubner) is one of the most destructive pest insects in Iran and many other countries. In this study, lethal and sublethal effects of methoxyfenozide, and thiodicarb were evaluated against H. armigera larvae that fed on insecticide-treated artificial diet. The effects of methoxyfenozide and thiodicarb were assessed in 3rd instars. Methoxyfenozide and thiodi ...
DOI:
10.1016/j.cropro.2012.09.011

5. Age, Growth, and Reproductive Biology of Cownose Rays in Chesapeake Bay

Author:
Fisher Robert A.; Call Garrett C.; Grubbs R. Dean
Source:
Marine and coastal fisheries 2013 v.5 pp. 224-235
ISSN:
1942-5120
Subject:
Argopecten irradians; Rhinoptera bonasus; animal age; animal growth; aquaculture; benthic organisms; body size; embryo (animal); fecundity; females; gestation period; growth models; life history; males; overfishing; oysters; predation; predatory fish; pregnancy; sexual maturity; shellfish; Chesapeake Bay; North Carolina
Abstract:
... The Cownose Ray Rhinoptera bonasus is an opportunistic predator of benthic invertebrates and has had a long history of negative interactions with commercial shellfish industries. Most recently, Cownose Rays have been implicated in negatively affecting the recovery of bay scallop Argopecten irradians stocks in North Carolina and oyster restoration and commercial aquaculture efforts in Chesapeake Ba ...
DOI:
10.1080/19425120.2013.812587

6. An insect trypsin-like serine protease as a target of microRNA: Utilization of microRNA mimics and inhibitors by oral feeding

Author:
Balachandran Jayachandran; Mazhar Hussain; Sassan Asgari
Source:
Insect biochemistry and molecular biology 2013 v.43 no.4 pp. 398-406
ISSN:
0965-1748
Subject:
Helicoverpa armigera; bioassays; enzyme activity; fecundity; in vitro studies; larvae; larval development; microRNA; mortality; moths; pest control; serine proteinases
Abstract:
... MicroRNAs (miRNAs) are non-coding small RNAs (18–25 nt) that play crucial roles in various biological processes, including development, as gene regulators. In this study, we identified a miRNA, har-miR-2002b, that is specifically expressed during larval stages of Helicoverpa armigera (cotton bollworm). For the first time, we explored the possibility of utilizing synthetic inhibitor and mimic of a ...
DOI:
10.1016/j.ibmb.2012.10.004
PubMed:
23108205

7. Aspects of reproduction of striped venus Chamelea gallina in the Gulf of Cádiz (SW Spain): Implications for fishery management

Author:
Marina Delgado; Luis Silva; Ana Juárez
Source:
Fisheries research 2013 v.146 pp. 86-95
ISSN:
0165-7836
Subject:
Chamelea; body weight; coasts; developmental stages; energy; fecundity; females; fisheries management; gametogenesis; image analysis; males; monitoring; oocytes; overfishing; population structure; spawning; Spain
Abstract:
... This study analyzes the main reproductive aspects of a natural population of Chamelea gallina on the SW Spanish coast (Gulf of Cadiz): gametogenic cycle, size at first maturity, size at sexual differentiation and partial fecundity. Methodology involved the use of standard histological techniques, image analysis and the assessment of the variation of gonadal growth.Monitoring throughout one year (M ...
DOI:
10.1016/j.fishres.2013.04.005

8. Assessing the Impact of Invasive Species Management Strategies on the Population Dynamics of Castor bean (Ricinus communis L., Euphorbiaceae) at Two Southern California Coastal Habitats

Author:
Carmona-Galindo Víctor D.; Hinton-Hardin Daryle; Kagihara Jodi; Pascua Mary Rose T.
Source:
Natural areas journal 2013 v.33 no.2 pp. 222-226
ISSN:
0885-8608
Subject:
Ricinus communis; adaptive management; castor beans; fecundity; habitats; horticulture; invasive species; population dynamics; survival rate; wetlands; California
Abstract:
... The diverse uses of Ricinus communis L. (Castor bean) in herbalism, agriculture, and horticulture have facilitated the worldwide dispersal of this invasive r-selected species. A common element in ruderal areas and transitional habitats, the invasive species management of R. communis in southern California has largely relied on manual removal strategies. This study evaluates how the survivorship an ...
DOI:
10.3375/043.033.0212

9. Assessing the intrinsic resilience of a particularly fast-growing teleost prey species (red cod, Pseudophycis bachus)

Author:
Jodie Kemp; Gregory P. Jenkins; Stephen E. Swearer
Source:
Marine & freshwater research 2013 v.64 no.2 pp. 130-138
ISSN:
1323-1650
Subject:
harvesting; cod (fish); life history; longevity; fecundity; males; predators; predation; biomass; females
Abstract:
... Understanding the life-history parameters that influence productivity is important in assessing the intrinsic resilience of a species to exploitation. The life-history characteristics of red cod, Pseudophycis bachus, were investigated to assess the intrinsic resilience of this important prey species to increased predation pressure by a range of high trophic-level predators. Red cod has a particula ...
DOI:
10.1071/MF12198

10. Benefits of fidelity: does host specialization impact nematode parasite life history and fecundity?

Author:
J. KOPRIVNIKAR; H. S. RANDHAWA
Source:
Parasitology 2013 v.140 no.5 pp. 587-597
ISSN:
1469-8161
Subject:
Nematoda; animals; coevolution; eggs; fecundity; females; filters; host specificity; hosts; life history; models; parasites; parasitism; parasitoses; phylogeny; prepatent period; reproductive performance
Abstract:
... The range of hosts used by a parasite is influenced by macro-evolutionary processes (host switching, host–parasite co-evolution), as well as ‘encounter filters’ and ‘compatibility filters’ at the micro-evolutionary level driven by host/parasite ecology and physiology. Host specialization is hypothesized to result in trade-offs with aspects of parasite life history (e.g. reproductive output), but t ...
DOI:
10.1017/S0031182012002132
PubMed:
23343907

11. Biological activities of lignans and neolignans on the aphid Myzus persicae (Sulzer)

Author:
Julien Saguez; Jacques Attoumbré; Philippe Giordanengo; Sylvie Baltora-Rosset
Source:
Arthropod-plant interactions 2013 v.7 no.2 pp. 225-233
ISSN:
1872-8855
Subject:
Myzus persicae; artificial diets; biopesticides; fecundity; flax; life history; lignans; mortality
Abstract:
... Lignans and neolignans have been reported to exert different biological activities, including insecticidal ones. Three lignans, secoisolariciresinol (SECO), secoisolariciresinol diglucoside (SDG), and anhydrosecoisolariciresinol (AHS), and one neolignan, dehydrodiconiferyl alcohol-4-β-D-glucoside (DCG), were isolated from flax. Their insecticidal properties were evaluated on the aphid Myzus persic ...
DOI:
10.1007/s11829-012-9236-x

12. Biological behavior of Parlatoriablanchardi Targioni1892 (Homoptera: Diaspididae) towards three cultivars of date palm tree in the region of Biskra, Algeria

Author:
Matallah, S.; Biche, M.
Source:
Acta horticulturae 2013 no.994 pp. 389-394
ISSN:
0567-7572
Subject:
Diaspididae; cultivars; fecundity; females; mortality; population dynamics; trees; Algeria
Abstract:
... The aim of this work is to study the biological behavior of white cochineal ParlatoriablanchardiTarg. on three cultivars of date palm (‘Deglet Nour’,‘Degla Baida’ and ‘Ghars’) in the region of Biskra. Comparison of parameters; numbers of living, population dynamics, fecundity, size of young females and mortality revealed that the mealybug grows best on the cultivars ‘Ghars’ and ‘Deglet Nour’.On th ...

13. Biological characteristics of lower Amur grayling Thymallus tugarinae (Salmoniformes: Thymallidae): 3. reproductive biology

Author:
P. B. Mikheev; V. I. Ostrovskii; N. N. Semenchenko; G. V. Novomodnyi; A. P. Shmigirilov; E. I. Barabanshchikov
Source:
Journal of ichthyology 2013 v.53 no.4 pp. 281-292
ISSN:
0032-9452
Subject:
Thymallus; body length; body weight; correlation; egg weight; fecundity; females; fish; gravel; males; rivers; sex ratio; stream channels; water temperature
Abstract:
... We discuss peculiarities of the reproductive biology of lower Amur grayling Thymallus tugarinae. The sex ratio in most of the studied samples was close to 1 : 1, but sometimes it might differ due to various reasons. Females dominated among the specimens entering the first reproduction period; the rate of females decreased in the fish older than 5 years. Maturation was usual in fish that reached 20 ...
DOI:
10.1134/S0032945213020100

14. Biological tools for control of larval stages of malaria vectors – a review

Author:
Tullu Bukhari; Willem Takken; Constantianus J. M. Koenraadt
Source:
Biocontrol science and technology 2013 v.23 no.9 pp. 987-1023
ISSN:
1360-0478
Subject:
Anopheles; Plasmodium; adults; bed nets; biological control; chemical control; cost effectiveness; entomopathogenic fungi; fecundity; insecticide resistance; insecticides; larvae; longevity; malaria; mortality; pesticide application; spraying; vector control
Abstract:
... The two main interventions presently being deployed for control of malaria vectors, that is, long-lasting insecticide-treated bed nets (LLINs) and indoor residual spraying (IRS) involve the use of chemical insecticides and target adult mosquitoes. Meanwhile, the potential of larval control is increasingly being acknowledged for the reduction of insecticide-resistant and/or exophagic Anopheles popu ...
DOI:
10.1080/09583157.2013.810706

15. Biology and host range of Mada polluta, a potential biological control agent of Tecoma stans in South Africa

Author:
Lulama Gracious Madire
Source:
Biocontrol science and technology 2013 v.23 no.8 pp. 944-955
ISSN:
1360-0478
Subject:
Acanthaceae; Amaranthaceae; Apiaceae; Asteraceae; Coleoptera; Cucurbitaceae; Fabaceae; Lamiaceae; Oleaceae; Poaceae; Scrophulariaceae; Solanaceae; Tecoma stans; Verbenaceae; adulthood; adults; biological control; biological control agents; eggs; fecundity; host range; host specificity; invasive species; larvae; oviposition; population growth; quarantine; South Africa
Abstract:
... The host range of Mada polluta Mulsant (Coleoptera:Coccinnellidae) was studied to assess its suitability as a biological control agent of Tecoma stans (L.) Juss ex Kunth var stans (Bignoniaceae), an invasive weed in South Africa. Biology of M. polluta and its host range were determined in the laboratory using no-choice and multi-choice feeding, oviposition and larval survival tests. Out of 36 plan ...
DOI:
10.1080/09583157.2013.809404

16. Bt Crops Producing Cry1Ac, Cry2Ab and Cry1F Do Not Harm the Green Lacewing, Chrysoperla rufilabris

Author:
Jun-Ce Tian; Xiang-Ping Wang; Li-Ping Long; Jörg Romeis; Steven E. Naranjo; Richard L. Hellmich; Ping Wang; Elizabeth D. Earle; Anthony M. Shelton; Juan Luis Jurat-Fuentes
Source:
PloS one v.8 no.3 pp. -
ISSN:
1932-6203
Subject:
Bacillus thuringiensis; Chrysoperla rufilabris; Gossypium hirsutum; Spodoptera frugiperda; Trichoplusia ni; Zea mays; bacterial proteins; biological control; broccoli; corn; cotton; crops; crystal proteins; eggs; fecundity; hatching; hosts; insect control; insect pests; insecticidal proteins; insecticide resistance; larvae; natural enemies; nontarget organisms; plant-insect relations; predator-prey relationships; predatory insects; risk; risk assessment; transgenic plants
Abstract:
... The biological control function provided by natural enemies is regarded as a protection goal that should not be harmed by the application of any new pest management tool. Plants producing Cry proteins from the bacterium, Bacillus thuringiensis (Bt), have become a major tactic for controlling pest Lepidoptera on cotton and maize and risk assessment studies are needed to ensure they do not harm impo ...
Handle:
10113/56012
DOI:
10.1371/journal.pone.0060125
PubMed:
23544126
PubMed Central:
PMC3609736

17. Cabbage Seasonal Leaf Quality Mediating the Diamondback Moth Plutella xylostella (L.) (Lepidoptera: Yponomeutidae) Performance

Author:
N C Teixeira; N A Santos; R M Maurício; R N C Guedes; M G A Oliveira; W G Campos
Source:
Neotropical entomology 2013 v.42 no.6 pp. 545-551
ISSN:
1519-566X
Subject:
Brassica oleracea; Plutella xylostella; Yponomeutidae; adults; cabbage; fecundity; habitats; host plants; immatures; insects; leaves; lipids; mortality; nutritive value; population dynamics; rearing; seasonal variation; spring; summer; tropics
Abstract:
... Seasonal variation in plant quality may be intense enough to generate predictable patterns in insect herbivore populations. In order to explain seasonal oscillations in neotropical populations of the diamondback moth Plutella xylostella (L.), we tested the following: (1) if nutritional quality of cabbage (Brassica oleraceae var. capitata), a primary host plant of diamondback moth, adversely affect ...
DOI:
10.1007/s13744-013-0156-y

18. Canalization of phenology in common terns: genetic and phenotypic variations in spring arrival date

Author:
Coline M. Arnaud; Peter H. Becker; F. Stephen Dobson; Anne Charmantier
Source:
Behavioral ecology 2013 v.24 no.3 pp. 683-690
ISSN:
1045-2249
Subject:
Sterna hirundo; breeding; breeding sites; fecundity; genetic variance; genetic variation; heritability; life history; longevity; phenology; phenotype; phenotypic variation; refining; spring; viability
Abstract:
... Evolutionary potential is dependent on the additive genetic variance displayed by important adaptive behavioral and life-history traits, such as phenology. However, the genetic variance of such traits may vary over the life span. Using a long-term study (1994–2008) of arrival date from spring migration in the long-lived common tern (Sterna hirundo), we examined changes in variances of this key phe ...
DOI:
10.1093/beheco/ars214

19. Coexistence of sperm-dependent asexuals and their sexual hosts: the role of differences in fitness-related traits

Author:
J. A. Mee; C. Chan; E. B. Taylor
Source:
Environmental biology of fishes 2013 v.96 no.9 pp. 1111-1121
ISSN:
0378-1909
Subject:
Phoxinus; body size; eggs; fecundity; females; hosts; niches; viability
Abstract:
... Understanding the mechanisms of coexistence of sperm-dependent asexuals and their sexual hosts requires an empirical evaluation of their relative fitness. We evaluated the fecundity, egg viability, and hatchling growth rate of the sperm-dependent asexual hybrid species Phoxinus eos-neogaeus and its sexually-reproducing parental species, P. eos and P. neogaeus. Three comparisons between asexual and ...
DOI:
10.1007/s10641-012-0107-1

20. Comparative demography of an exotic herbaceous annual among plant communities in invaded canyon grassland: inferences for habitat suitability and population spread

Author:
John M. Wallace; Timothy S. Prather
Source:
Biological invasions 2013 v.15 no.12 pp. 2783-2797
ISSN:
1387-3547
Subject:
Anthriscus; Caucalis; Celtis; demography; fecundity; grasslands; grazing; growth and development; livestock; plant communities; population growth; refuge habitats; seed dispersal; shrubs; temporal variation; variance; Pacific States
Abstract:
... Studies of exotic plant demography among habitats within its novel range may elucidate mechanisms of competitive dominance at local scales and invasive spread at landscape scales. We compared demographic trends of Anthriscus caucalis, an exotic herbaceous annual, across several plant communities within canyon grasslands of the Inland Pacific Northwest, USA. Greater observed survival and fecundity ...
DOI:
10.1007/s10530-013-0493-0