Consulta: subjectFacets:"Salmonid"
Registros recuperados: 3
Data/hora: 13/06/2024 18:23:27

Assessing the effects of genotype-by-environment interaction on epigenetic, transcriptomic, and phenotypic response in a Pacific salmon
Provedor de dados: 5
Autores: Christensen, Kris A; Le Luyer, Jeremy; Chan, Michelle T T; Rondeau, Eric B; Koop, Ben F; Bernatchez, Louis; Devlin, Robert H.
Genotype-by-environment (GxE) interactions are non-parallel reaction norms among individuals with different genotypes in response to different environmental conditions. GxE interactions are an extension of phenotypic plasticity and consequently studying such interactions improves our ability to predict effects of different environments on phenotype as well as the fitness of genetically distinct organisms and their capacity to interact with ecosystems. Growth hormone transgenic coho salmon grow much faster than non-transgenics when raised in tank environments, but show little difference in growth when reared in nature-like streams. We used this model system to evaluate potential mechanisms underlying this growth rate GxE interaction, performing RNA-seq to...
Tipo: Text
Palavras-chave: Epigenetics; Transcriptome; GxE; Transgenic; Growth hormone; Salmonid.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00677/78890/81188.pdf

Impact de la salmoniculture marine sur l'environnement en rade de Cherbourg (1993-1995) 1. Eau et Pélagos
Provedor de dados: 5
Autores: Merceron, Michel; Bentley, Daniel; Le Grand, Jacqueline; Lamort-datin, Laure; Kempf, Marc.
The environmental impact of a brown trout farm located in the Grande Rade de Cherbourg (Normandy) is reported. During observations the fish stock evolved within the range of 140 to 350 metric tons. Farm influence was researched on water column through hydrochemistry, phytoplankton, faecal bacteria and, on bottom, through grain size, organic matter, metals, macrobenthos. This report only deals with water column.  Except ammonia, no hydrological parameter seems to be affected, even near to the net pens. Phytoplankton and coliform bacteria were not altered. An extra concentration of ammonia was detected at some tens meters from the raft, with favourable conditions. But generally it was impossible to observe it unless close to the farming structure, downward...
Tipo: Text
Palavras-chave: Channel; Current; Faecal bacteria; Phytoplankton; Hydrology; Impact; Salmonid; Fish farm; Manche; Courant; Bactéries fécales; Phytoplancton; Hydrologie; Impact; Salmonidé; Aquaculture.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/1997/rapport-3342.pdf

Epigenomic modifications induced by hatchery rearing persist in germ line cells of adult salmon after their oceanic migration
Provedor de dados: 5
Autores: Leitwein, Maeva; Laporte, Martin; Le Luyer, Jeremy; Mohns, Kayla; Normandeau, Eric; Withler, Ruth; Bernatchez, Louis.
Human activities induce direct or indirect selection pressure on natural population and may ultimately affect population’s integrity. While numerous conservation programs aimed to minimize human‐induced genomic variation, human‐induced environmental variation may generate epigenomic variation potentially affecting fitness through phenotypic modifications. Major questions remain pertaining to how much epigenomic variation arises from environmental heterogeneity, whether this variation can persist throughout life, and whether it can be transmitted across generations. We performed whole genome bisulfite sequencing (WGBS) on the sperm of genetically indistinguishable hatchery and wild born migrating adults of Coho salmon (Oncorhynchus kisutch) from two...
Tipo: Text
Palavras-chave: Conservation; Developmental plasticity; Epigenomic; Fisheries; Fitness; Hatchery; Salmonid.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00688/79977/82923.pdf