Bioaccumulation Potential of Dietary Arsenic, Cadmium, Lead, Mercury, and Selenium in Organs and Tissues of Rainbow Trout (Oncorhyncus mykiss) as a Function of Fish Growth

2008 ◽  
Vol 56 (7) ◽  
pp. 2442-2451 ◽  
Author(s):  
Silvia Ciardullo ◽  
Federica Aureli ◽  
Ettore Coni ◽  
Emilio Guandalini ◽  
Francesca Iosi ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Fish Growth ◽  
Oncorhyncus Mykiss ◽  
Cadmium Lead ◽  
Dietary Arsenic

Effects of copper, cadmium, lead, and arsenic in a live diet on juvenile fish growth

2010 ◽  
Vol 67 (11) ◽  
pp. 1816-1826 ◽  
Author(s):  
Russell J. Erickson ◽  
David R. Mount ◽  
Terry L. Highland ◽  
J. Russell Hockett ◽  
Edward N. Leonard ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Ictalurus Punctatus ◽  
Juvenile Fish ◽  
River Sediments ◽  
Pimephales Promelas ◽  
Fish Growth ◽  
Dependent Manner ◽  
Fecal Matter ◽  
Clark Fork River ◽  
Cadmium Lead

The effects of diet-borne copper, cadmium, lead, and arsenic on juvenile fish were evaluated using a live diet consisting of the oligochaete Lumbriculus variegatus . In 30 d exposures, no effects were observed on the growth and survival of rainbow trout ( Oncorhynchus mykiss ), fathead minnow ( Pimephales promelas ), and channel catfish ( Ictalurus punctatus ) fed diets contaminated with copper [130–310 µg Cu·(g dm)−1], cadmium [90–540 µg Cd·(g dm)−1], and lead [850–1000 µg Pb·(g dm)−1]. However, rainbow trout growth was reduced in a dose-dependent manner for diets contaminated with arsenic [26–77 µg As·(g dm)−1]. These effects of arsenic on fish growth were accompanied by slower feeding rate, reduced food conversion efficiency, liver cell abnormalities, and fecal matter changes suggestive of digestive effects, and occurred to a similar extent whether the diet was exposed to arsenate or arsenite. Effects from these dietary levels of arsenic, and the absence of effects from these dietary levels of metals, were generally consistent with literature reports using laboratory diets amended with toxicant salts. These results also indicated that reported growth effects on rainbow trout fed diets of invertebrates collected from mining-contaminated areas of the Clark Fork River (Montana, USA) or exposed in the laboratory to Clark Fork River sediments are likely more attributable to the arsenic than the metals in those diets.

scholarly journals Sex-linkage of two enzyme loci in Oncorhyncus mykiss (rainbow trout)

Heredity ◽  
1994 ◽  
Vol 72 (5) ◽  
pp. 498-507 ◽  
Author(s):  
Fred W Allendorf ◽  
William A Gellman ◽  
Gary H Thorgaard
Keyword(s):  
Rainbow Trout ◽  
Sex Linkage ◽  
Enzyme Loci ◽  
Oncorhyncus Mykiss

Diet and growth of rainbow trout, Salmo gairdneri Richardson, in two streams on the New England Tableland, New South Wales

1981 ◽  
Vol 32 (6) ◽  
pp. 967 ◽  
Author(s):  
RWJ Pidgeon
Keyword(s):  
Rainbow Trout ◽  
New England ◽  
New South ◽  
New South Wales ◽  
Rank Correlation ◽  
Dry Weight ◽  
Fish Growth ◽  
Salmo Gairdneri ◽  
Fish Size ◽  
South Wales

The diets and growth rates of rainbow trout in the Wollomombi and Guy Fawkes Rivers in northern New South Wales were examined. The growth rate of trout in the Wollomombi River was much higher than that of fish in the Guy Fawkes River. Spearman rank correlation coefficients indicated that stream type was more important than fish size in determining the composition of the diet of the trout. Benthic invertebrates formed the largest component of the diet in both streams: 66.0 and 63.0% of ash-free dry weight (AFDW) in the Wollomombi River and the Guy Fawkes River, respectively. Trout in the Wollomombi River consumed more nektonic prey (33.3% of AFDW) than fish in the Guy Fawkes River (3.7% of AFDW). In contrast, surface food (aquatic imagines and terrestrial insects) made up a much higher proportion of the diet of trout in the Guy Fawkes River (33.9% of AFDW) than in the Wollomombi River (0.6% of AFDW). Crayfish were a major component of the diet (in terms of AFDW) in both streams, their proportions increasing with fish size. The significance of crayfish in relation to fish growth is discussed.

A model for predicting variability in fish growth within rainbow trout populations

Aquaculture ◽  
1992 ◽  
Vol 100 (1-3) ◽  
pp. 102
Author(s):  
M.H. Papst ◽  
A.N. Arnason ◽  
G.H. Hopky
Keyword(s):  
Rainbow Trout ◽  
Fish Growth

scholarly journals Features of rainbow trout farming technology in PE “Zakhidna Rybna Kompania”, for feeding with Aguafeed Fischfutteer

2020 ◽  
Vol 22 (93) ◽  
pp. 142-147
Author(s):  
V. I. Bozhyk ◽  
O. V. Bozhyk
Keyword(s):  
Rainbow Trout ◽  
Water Supply ◽  
Objective Assessment ◽  
High Energy ◽  
High Protein ◽  
Fish Growth ◽  
Feed Ratio ◽  
General Description ◽  
Commercial Fish

The production of trout products in ponds and aquaculture farms is based on modern and long-term plans for technology and intensification of production, through the introduction of the latest approaches, by borrowing the experience of leading foreign producers, expanding production areas and sectoral investments. The main indicator that characterizes the efficiency of fisheries and reflects the state of production and the level of its economic indicators. is fish productivity Growing trout in aquaculture in a closed water supply is associated with high planting densities per unit area, the use of high-protein granular feed, which must fully meet the needs of fish in all necessary nutrients to ensure a balanced diet. In modern farms for feeding trout use high-protein feed mixtures in the form of grits and pellets. The dynamics of the intensity of growth and development of rainbow trout mainly depends on the location of the farm, the quality of the water supply source, the feeding regime of fish and the quality of feed. Therefore, the aim of the work was based on a review of literature sources and analysis of economic activity of the studied farm to give a general description of trout feed, Aquafeed Fischfutter, used for fish feeding, and determine their effectiveness, taking into account geographical location and abiotic and biotic factors . In addition, the study fish performance when feeding these feeds. Conduct research on the growth rate of rainbow trout, changes in weight and length of larvae, fry, yearlings and commercial fish, in tray, pool and pond cultivation. Develop a scheme for growing all age groups of trout on these feeds. Establish indicators of quality, nutritional value, feed ratio of starting, growth and production feeds. To give an objective assessment of their impact on the growth of larvae, fry, yearlings and commercial rainbow trout in the conditions of trout farming PE “Zakhidna Rybna Kompania”, Perimyshlyany district, Lviv region. The conducted research gives the basis to claim that this compound feed guarantees high daily gain. Being a high-energy feed, its use does not lead to obesity of fish. With intensive feeding, a good ratio of price and productivity of farmed fish is realized. The risk of contamination of water bodies and fish is very low, due to the low phosphorus content and good digestibility of feed – 1.1 kg of feed/kg of fish growth. The feed corresponds to the best world indicators in accordance with buoyancy and stability in water.

scholarly journals PacBio Iso-Seq Improves the Rainbow Trout Genome Annotation and Identifies Alternative Splicing Associated With Economically Important Phenotypes

2021 ◽  
Vol 12 ◽  
Author(s):  
Ali Ali ◽  
Gary H. Thorgaard ◽  
Mohamed Salem
Keyword(s):  
Rainbow Trout ◽  
Alternative Splicing ◽  
Single Molecule ◽  
Genome Annotation ◽  
Reference Genome ◽  
Cold Water ◽  
Intron Retention ◽  
Transcriptome Assembly ◽  
Model Organism ◽  
Fish Growth

Rainbow trout is an important model organism that has received concerted international efforts to study the transcriptome. For this purpose, short-read sequencing has been primarily used over the past decade. However, these sequences are too short of resolving the transcriptome complexity. This study reported a first full-length transcriptome assembly of the rainbow trout using single-molecule long-read isoform sequencing (Iso-Seq). Extensive computational approaches were used to refine and validate the reconstructed transcriptome. The study identified 10,640 high-confidence transcripts not previously annotated, in addition to 1,479 isoforms not mapped to the current Swanson reference genome. Most of the identified lncRNAs were non-coding variants of coding transcripts. The majority of genes had multiple transcript isoforms (average ∼3 isoforms/locus). Intron retention (IR) and exon skipping (ES) accounted for 56% of alternative splicing (AS) events. Iso-Seq improved the reference genome annotation, which allowed identification of characteristic AS associated with fish growth, muscle accretion, disease resistance, stress response, and fish migration. For instance, an ES in GVIN1 gene existed in fish susceptible to bacterial cold-water disease (BCWD). Besides, under five stress conditions, there was a commonly regulated exon in prolyl 4-hydroxylase subunit alpha-2 (P4HA2) gene. The reconstructed gene models and their posttranscriptional processing in rainbow trout provide invaluable resources that could be further used for future genetics and genomics studies. Additionally, the study identified characteristic transcription events associated with economically important phenotypes, which could be applied in selective breeding.

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