An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
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.
conditionfactor, etc ; Oncorhynchus keta; body weight; research; Show all 4 Subjects
Abstract:
... Burst swimming velocity (Ubᵤᵣₛₜ) was compared between wild and hatchery-reared chum salmon fry. In the hatchery-reared fry, Ubᵤᵣₛₜ was significantly correlated with the condition factor, but not with the body mass and fork length. In the wild-reared fry, on the other hand, Ubᵤᵣₛₜ ranged widely and did not correlate with condition factor. These suggest that well-balanced growth under satisfactory n ...
conditionfactor, etc ; Oxynoemacheilus; fish communities; kuru; population dynamics; Show all 5 Subjects
Abstract:
... AbstractThis study aimed to provide the length–weight relations and condition factors of 34 Oxynoemacheilus species from the inland waters of Turkey: Oxynoemacheilus anatolicus Erk’akan, Özeren et Nalbant, 2008; Oxynoemacheilus angorae (Steindachner, 1897); Oxynoemacheilus argyrogramma (Heckel, 1847); Oxynoemacheilus arsaniasus Freyhof, Kaya, Turan et Geiger, 2019; Oxynoemacheilus atili Erk’akan, ...
conditionfactor, etc ; Ryukyu Archipelago; auctions; body weight; color; market value; markets; prices; research; wild fish; Show all 10 Subjects
Abstract:
... Body color of the coralgroupers (Serranidae, Plectropomus) is known to vary from red to brown and dark to pale, with a vivid red color is thought to be preferred in fish markets of East Asia. This study revealed quantitative effects of the body color of coralgroupers on the market value at fish market in Okinawa, Japan. Results showed that bid price of six color grades of P. leopardus are signific ...
conditionfactor, etc ; Oreochromis niloticus; breeding stock; feed conversion; fillets; fish; gonadosomatic index; labor; models; prices; Show all 10 Subjects
Abstract:
... All-male tilapia stocks are widely used by farmers to supply both domestic and international markets with homogenous, large sized fish (500 g+). While a number of strategies are possible, hormonal treatment of fry with 17α-methyltestosterone (MT) is the most common method used by commercial farmers due to its low cost and ease of application. However, contrasting to its current widespread use, the ...
conditionfactor, etc ; Salmo salar; aquaculture; biochemistry; blood; body size; death; fish; heat tolerance; hematocrit; net pens; physiology; temperature; Show all 13 Subjects
Abstract:
... Atlantic salmon is an important aquaculture species farmed in ocean net-pens and therefore subjected to changing environmental conditions, including rising temperatures. This creates a need for research on the thermal tolerance of this species for the future of sustainable aquaculture. We investigated the thermal tolerance of individually tagged Atlantic salmon post-smolts subjected sequentially t ...
conditionfactor, etc ; Palaemon; acidification; body size; carbon dioxide; juveniles; lipid content; ocean acidification; pH; protein content; research; shrimp; temperature; Show all 13 Subjects
Abstract:
... Anthropogenic CO₂ emissions have led to the warming and acidification of the oceans. Although, there is a growing of evidence showing that simultaneous occurrence of ocean acidification and ocean warming are threats to marine organisms, information on their combined effect on coastal shrimp species remains scarce. The purpose of this study was to estimate the combined effects of seawater acidifica ...
Bruno José Corecha Fernandes Eiras; Daniel Abreu Vasconcelos Campelo; Lorena Batista de Moura; Liliane Marques de Sousa; Isabele Silva Nunes; Leonnan Carlos Carvalho de Oliveira; André Magalhães; Rauquírio Marinho da Costa
conditionfactor, etc ; Heros severus; Moina; Pterophyllum; allometry; aquaculture; experimental design; growth performance; intestines; postlarvae; specific growth rate; weight gain; Show all 12 Subjects
Abstract:
... The aim of the present study was to determine the best feeding for angelfish (Pterophyllum scalare) and severum (Heros severus) post-larvae fed with Moina sp. during their first feeding phase. For this purpose, growth performance and intestinal histomorphometry of angelfish and severum post-larvae under different feeding rates and frequencies were evaluated. The experiment was conducted for 20 day ...
conditionfactor, etc ; Hypselobarbus; aquaculture; carp; cement; fingerlings; research; Show all 7 Subjects
Abstract:
... The present study was undertaken to generate first time information on the optimal stocking density for fry to fingerling rearing of Hypselobarbus pulchellus. Rearing was carried out for 90 days at stocking densities of 15, 30, 45, 60, 75, 90, 105 and 120 fish/m² in 24 m² cement tanks. While the length of fish at harvest ranged from 3.42 cm in 120/m² to 6.11 cm in 15/m² densities, the weight range ...
conditionfactor, etc ; Oncorhynchus mykiss; animal growth; animal welfare; captive animals; environmental enrichment; fins; growth performance; mortality; protective effect; social environment; trout; Show all 12 Subjects
Abstract:
... Environmental enrichment is a promising strategy to improve the welfare of fish in captivity. However, the utilization of enrichment in aquaculture is still infrequent, maybe because there is a paucity of knowledge about how its effects depend on factors such as fish species, developmental stage, social environment or the type and extent of enrichment. In this study, we evaluated the effects of ph ...
Simrith E. Córdova-de la Cruz; Gil Martínez-Bautista; Emyr S. Peña-Marín; Rafael Martínez-García; Gabriel Núñez-Nogueira; Randy H. Adams; Warren W. Burggren; Carlos Alfonso Alvarez-González
conditionfactor, etc ; Atractosteus; body weight; cardiac output; edema; fish development; freshwater; heart rate; models; oils; petroleum; phenotype; pollution; research; saline water; Show all 15 Subjects
Abstract:
... Fish development can be affected by environmental pollutants such as crude oil (anthropogenic or natural sources), causing alterations especially in cardiac function and morphology. Most such studies have focused on saltwater species, whereas studies in freshwater fishes are scant. The objective of the current study was to evaluate the effects of crude oil exposure (as 0, 5, 10, 15, or 20% high-en ...
conditionfactor, etc ; Trachinotus ovatus; carbon; feather meal; feed conversion; feed intake; fish; fish meal; hepatosomatic index; irradiation; nitrogen; research; stoichiometry; weight gain; Show all 14 Subjects
Abstract:
... This study evaluated the potential to replace dietary fish meal with gamma‐ray (γ)‐irradiated feather meal and non γ‐irradiated feather meal for golden pompano Trachinotus ovatus. The basal diet (R) contained 250 g/kg fish meal, and 20% and 40% of the fish meal were replaced by either γ‐irradiated feather meal (IF20 and IF40) or non γ‐irradiated feather meal (F20 and F40). Fish were fed the test d ...
conditionfactor, etc ; Salmo trutta; acoustics; anadromous fish; autumn; juveniles; lakes; migratory behavior; parr; phenology; potamodromous fish; river flow; spring; summer; telemetry; trout; Show all 16 Subjects
Abstract:
... There is growing interest in the phenology of juvenile Salmo trutta and evidence of significant downstream migration during the autumn in some anadromous populations. The present study used acoustic telemetry to examine the phenology of potamodromous trout parr across a region encompassing two large lake catchments. One hundred sixty‐seven trout parr were tagged in late summer across four lake tri ...
conditionfactor, etc ; Stolephorus; allometry; anchovies; mortality; population dynamics; Indonesia; Show all 7 Subjects
Abstract:
... Mulya MB, Jhon AH, Harahap ZA. 2021. Population dynamics of anchovy pekto (Stolephorus waitei) in the waters of Malacca Strait, North Sumatra, Indonesia. Biodiversitas 22: 2693-2698. Anchovy pekto or Stolephorus waitei (Engraluidae: Clupeiformes) is one of the fish in the eastern coastal part of North Sumatra, occupying the waters of Malacca Strait. This research presents the population dynamics o ...
conditionfactor, etc ; Thymallus thymallus; adipocytes; body length; body weight; diploidy; epithelium; females; fibroblasts; genetic pollution; gonads; high pressure treatment; histology; insemination; males; triploidy; Show all 16 Subjects
Abstract:
... Use of parental individuals from allochthonous lineages to produce stocking specimens resulted in genetic contamination of many local European grayling (Thymallus thymallus) populations. Stocking programs including triploid individuals that are not able to reproduce with stocks located in natural habitats due to being reproductively sterile could contribute to populations of the European grayling ...
conditionfactor, etc ; Acipenser fulvescens; ambient temperature; body weight; cold; fatty acid composition; fatty acid metabolism; fish; gene expression; growth performance; life history; overwintering; phospholipids; Show all 13 Subjects
Abstract:
... Environmental temperature during early life may have prolonged effects on growth and fatty acid metabolism, which could strongly influence overwintering survival in the first year of life for temperate-zone fish. In the present study, we examined how temperature during early life history might influence growth performance and fatty acid metabolism in age-0 Lake Sturgeon (Acipenser fulvescens) when ...
conditionfactor, etc ; Salmo salar; aquaculture; color; fish; genes; genotype; juveniles; prediction; Show all 9 Subjects
Abstract:
... We tested the possibility that vgll3, a gene linked with maturation age in Atlantic salmon (Salmo salar), may be associated with behaviour by measuring aggressiveness and feeding activity in 380 juveniles with different vgll3 genotypes. Contrary to our prediction, individuals with the genotype associated with later maturation (vgll3*LL) were significantly more aggressive than individuals with the ...
conditionfactor, etc ; animals; bycatch; lactic acid; males; mortality; phosphorus; potassium; sodium; Show all 9 Subjects
Abstract:
... The assessment of physiological responses to capture provides useful information for elasmobranch conservation. In particular, understanding these impacts in species caught as bycatch that are released after capture can predict their “post‐release” fate and aid in management plans. Although well studied in several species, capture‐stress is nonetheless frequently assessed without considering putat ...
conditionfactor, etc ; Mystus; air temperature; allometry; bioclimatology; climate change; fecundity; freshwater; gonadosomatic index; life history; mortality; population structure; rain; sex ratio; sports; Bangladesh; Ganges River; India; Show all 18 Subjects
Abstract:
... Freshwater catfishes are regarded primarily as a source of food and sport, so they are highly valuable economically. We comprehensively studied life history features of Mystus vittatus, including sex ratio (SR), population structure, growth pattern, condition, form factor (a₃.₀), sexual maturity (Lₘ), spawning season, fecundity, mortality (i.e., total mortality (Z), natural-mortality (MW), and fis ...
Ana Carla Carvalho Silva; Ruy Alberto Caetano Corrêa Filho; Darci Carlos Fornari; Janessa Sampaio de Abreu; Annaiza Braga Bignardi; Mariane de Freitas Genari Severino; Luiz Felipe dos Santos Amorim; Laziele Villela Albuquerque; Igor Lacerda Carneiro; Jayme Aparecido Povh
conditionfactor, etc ; Colossoma macropomum; aquaculture; biomass; cages; freshwater fish; morphometry; specific growth rate; Show all 8 Subjects
Abstract:
... This study evaluates the performance, morphometric traits, and body yield of the freshwater fish tambaqui, and of the tambatinga and tambacu hybrids. These fish were reared in cages with a 6 m³ usable volume, during three production phases: (I) 0–77 d of rearing (600 fish/cage), (II) 77–264 d of rearing (200 fish/cage), and (III) 264–402 d of rearing (100 fish/cage). In total, 5400 fish from three ...
conditionfactor, etc ; Dicentrarchus labrax; bass; biometry; fatty acid composition; humans; proximate composition; Italy; Show all 8 Subjects
Abstract:
... Sea bass is a fish widely produced, consumed and appreciated in Italy. Its intensive rearing system provides the consumption of valuable fish to a wider population. Thanks to the use of an appropriate feed, it is possible to obtain reared sea bass which are richer in total lipid with a majority presence of polyunsaturated fatty acids, such as n-3 and n-6 series. In this study, a total of 75 specim ...