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| Vandeputte, Marc; Bestin, Anastasia; Fauchet, Louarn; Allamellou, Jean-michel; Bosc, Stéphane; Menchi, Olivier; Haffray, Pierrick. |
| Parentage assignment with genomic markers provides an opportunity to monitor salmon restocking programs. Most of the time, it is used to study the fate of hatchery-born fish in those programs, as well as the genetic impacts of restocking. In such analyses, only fish that are assigned to their parents are considered. In the Garonne-Dordogne river basin in France, native salmon have disappeared, and supportive breeding is being used to try to reinstate a self-sustained population. It is therefore of primary importance to assess the numbers of wild-born returning salmon, which could appear as wrongly assigned or not assigned, depending on the power of the marker set and on the size of the mating plan. We used the genotypes at nine microsatellites of the 5800... |
| Tipo: Text |
Palavras-chave: Parentage assignment; Restocking; Fisheries. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/79973/82916.pdf |
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| Champigneulle, A.; Degiorgi, F.; Raymond, J. C.; Cachera, S.. |
| The technique of otoliths fluoromarking has been used to evaluate at a large scale the practices of brown trout (Salmo trutta L.) stocking (540 000 - 570 000/year, most of them as sac fry) for three cohorts 1994-95-96 in a part of the River Doubs having a length of 40 km and fragmented in three zones (upstream, median, downstream) by three hydroelectric dams. For each of the three cohorts, there is a rather high contribution (23 to 60% according to the zone) of the stocked fry to the automnal 0+ standing population. The mass marking of all the stocked fry allowed to show that the dynamics of the contribution of the two components of recruitment (natural or stocked) differed. Indeed, the contribution of stocking decreased with time when measured in the... |
| Tipo: Text |
Palavras-chave: Salmo trutta; Repeuplement; Marquage; Otolithes; Pêche; Salmo trutta; Restocking; Marking; Otoliths; Angling. |
| Ano: 2002 |
URL: https://archimer.ifremer.fr/doc/00480/59141/61769.pdf |
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| Benhaim, David; Guyomard, Rene; Chatain, Beatrice; Quillet, Edwige; Begout, Marie-laure. |
| Because captivity constitutes a drastic environmental change, domestication is expected to induce a rapid genetic selection for behavioural traits. In this study, we searched for genetic differences in behaviour among brown trout juveniles from two strains differing for their domestication history, i.e. an almost pure native wild Mediterranean population (W) and an Atlantic domesticated strain (D). In order to assess pure genetic differences among strains, males from the two origins were mated with Mediterranean females to produce two experimental crosses (WW and WD). The swimming activity characteristics of individual WW and WD juveniles were compared before and after the application of a stress (light switched off suddenly, followed by a 5-min period of... |
| Tipo: Text |
Palavras-chave: Domestication; Genotyping; Microsatellite; Swimming activity; Restocking. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00152/26301/24409.pdf |
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| Farias,Renata S.; Silva,Bruno C. N. R.; Nascimento,Wilka V. G.; Silva,Gênison C.; Luz,Ronald K.; Prosdocimi,Francisco; Figueiredo,Rozzanno A. C. R.; Carvalho,Daniel C.; Coimbra,Maria R. M.. |
| Abstract Due to the ecological importance of Lophiosilurus alexandri, the present work evaluated its genetic representativeness by comparing wild stocks to broodstocks that were kept at three restocking hatcheries along the São Francisco River. A total of 97 samples were genotyped for newly developed microsatellite markers. Low levels of genetic diversity (average alleles number of 4.2 alleles) were detected in all cases, being more severe in captive groups. Significant pairwise FST and DEST values, Structure, and DAPC analyses showed that wild animals were structured in two groups, and a third group was formed by captive animals, evidencing the need to adopt genetic criteria to retain genetic diversity in the hatcheries. For this reason, three full-sib... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lophiosilurus alexandri; Low genetic diversity; Relatedness estimator; Restocking; Sedentary behavior. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000300211 |
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| Buestel, Dominique; Cochard, Jean-claude; Dao, Jean-claude; Gerard, Andre. |
| Artificial production from natural spawners could be a way of getting big quantities of spat of Pecten maximus, ln the method described, larval phase (until a size of 250 microns) occurs in a hatchery, post-Iarval phase (from 250 µ until 3 millimeters) in a nursery, and first growth period directly into the sea (from 2 mm to a size of 25-30 mm), The fifst results obtained, production of several thousand of individuals good enough for reseeding, seem to be transposable to a larger scale. |
| Tipo: Text |
Palavras-chave: Restocking; Intermediate culture; Hatchery; Nursery; Pecten maximus; Repeuplement; Prégrossissement; Ecloserie; Nurserie; Pecten maximus. |
| Ano: 1982 |
URL: http://archimer.ifremer.fr/doc/1982/publication-6529.pdf |
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