Triploid hybrids between chum salmon female×chinook salmon male have early sea-water tolerance

Seeb, James E.; Thorgaard, Gary H.; Tynan, Tim J.

doi:10.1016/0044-8486(93)90121-e

Cited by 19 publications

(5 citation statements)

References 32 publications

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“…In addition to their better growth, all‐female triploid rainbow trout are sterile and do not mature (Lincoln and Scott 1984); therefore, should they escape or be released from culture facilities, they should not enter into mating behavior with wild trout. Indeed, female triploid salmonids are warranted even if their performance is inferior to diploids in situations where food‐fish production or stocking programs threaten natural genetic stocks (Seeb et al 1993).…”

Section: Discussionmentioning

confidence: 99%

Better Growth in All-Female Diploid and Triploid Rainbow Trout

Sheehan

Shasteen

Suresh

et al. 1999

Transactions of the American Fisheries Society

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We compared growth of all‐female triploid (AFT; 87% triploid), all‐female diploid (AFD), and mixed‐sex diploid (MSD) rainbow trout Oncorhynchus mykiss in a 265‐d growth trial. Triploidy was induced by heat‐shocking eggs to prevent second polar body exclusion. Three AFT families, three corresponding full‐sibling AFD families, and three MSD families that were half‐siblings of the AFD and AFT families were used. Mean initial weights (SD) were 94 g (14), 84 g (12), and 112 g (14) for the MSDs, AFDs, and AFTs, respectively, and final weights (SD) were 521 g (22), 568 g (68), and 749 g (30). Growth was linear. Growth was highest for the AFTs (2.38g/d), lowest for the MSDs (1.58 g/d), and intermediate for the AFDs (1.78 g/d). No significant differences (P > 0.05) were found among treatments for survival, food conversion ratio, condition factor, liversomatic index, viceral fat, and dress‐out. By day 180, however, the majority of the MSD males were sexually mature, whereas the MSD females and the AFDs were still maturing; mean gonadosomatic indices at day 180 were 3.1 for MSD males, 1.1 for MSD females, 1.9 for AFDs, and 0.4 for AFTs. Monosex female trout, diploids and triploids, show promise for practical trout farming due to their faster growth and the elimination of males, which mature and lose flesh quality earlier. Farmers should consider AFT production, especially for markets using larger trout.

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Section: Discussionmentioning

confidence: 99%

Better Growth in All-Female Diploid and Triploid Rainbow Trout

Sheehan

Shasteen

Suresh

et al. 1999

Transactions of the American Fisheries Society

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“…1988). Triploid hybrids have sometimes expressed increased growth (Stanley et al 1984;Benfey et al 19891, improved disease resistance (Dorsen and Ghevassus 1984;Parsons et al 1986;Dorsen et al 1991) and earlier saltwater tolerance (Seeb et al 1993) compared with one or both of their parental species.…”

Section: Conspecificsmentioning

confidence: 97%

Triploid Coho Salmon Outperform Diploid and Triploid Hybrids Between Coho Salmon and Chinook Salmon During Their First Year

Habicht¹,

Seeb²,

Gates³

et al. 1994

Can. J. Fish. Aquat. Sci.

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Habicht, C., j.E. Seeb, R.B. Gates, I.R. Brock, and C.A. Olito. 1994. Triploid coho salmon outperform diploid and triploid hybrids between coho salmon and chinook salmon during their first year. Can. 1. Fish. Aquat. Sci. 57 (Suppl. 1): 31-37.Sterile hybrid and triploid fish may provide hatchery programs with a tool to reduce the risk of genetic contamination of wild stocks, provided these fish have acceptable performance characteristics. We examined growth, survival, and deformities in diploid and triploid families of coho salmon (Oncorhynchus kisutch) and hybrids between coho salmon females X. chinook salmon ( 0 . tshawytscha) males. Data were collected from the half-sibling families through day 387. A reparameterined Gompertm growth model showed that conspecific coho salmon grew faster than hybrids, regardless of ploidy. No difference in growth rates was found between diploids and triploids. Abnormalities were significantly associated with the male parent but not with ploidy component, in contrast to previous observations of reduced deformity occurrence in triploid hybrids. Food conversion was better for conspecifics than hybrids during initial feeding, but not different during the second half of the experiment. No ploidy or cross x ploidy interaction effects on food conversion efficiency were observed. Finally, conspecifics had better posthatching survival than hybrids, regardless of ploidy. Of the treatments studied, conspecific triploid coho salmon may be the most viable alternative for sterile fish production: they performed as well as the conspecific diploids and better than either diploid or triploid hybrids.Des poissons hybrides et des poissons triploi'des steriles pourraient &re utilises dans Bes programmes df41evage pour reduire le risque de contamination gknktique des stocks sauvages s'ils presentaient des caracteristiques de rendement acceptables. Les auteurs ont examine les taux de croissance, de survie et de difformite chez des farnilles de saumons cohos (Oncorhynchus kisutch) diploaides et triploi'des et des hybrides obtenus de croisements de saumons cohos femelles et de saumons quinnats (0. tshawytscha) males. Ils ont recueilli des donnees sur les familles 3 demi-apparentees pendant 387 jours. Une courbe de croissance reparametree de Gompertn a r6vbl6 que le taux de croissance des cohos congeneres etait plus eleve que chen les hybrides, independamment du degre de pbidie; par contre, C i nfy avait pas de diffkreaace de ce taux entre Bes saumons diploi'des et triploi'des. Les anomalies btaient liees de facon significative au parent male, mais non 3 la ploi'die; ceci va l'encontre d'observations antkrieures selon lesquelles les hybrides triploi'des montrent Len taux moindre de difformite. Le taux de conversion des aliments 4tait plus $lev6 chez les congeneres que chen les hybrides la premiere prise d'aliments, mais nf6tait pas different pendant la deuxierne moiti6 de I'experience. Les auteurs n'ont pas observ6 d'incidence du degre de plo'idie ou de ifinteraction croisement et plo'idie sur Ifefficaci...

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“…Among salmonids, triploidy has been induced in Atlantic salmon (Benfey & Sutterlin 1984), chinook, coho and pink salmon (Utter et al 1983), brown trout (Scheerer & Thorgaard 1983) and rainbow trout (Chourrout 1980;Thorgaard et al 1981;Solar et al 1984). The generation of triploid hybrids has also been tested in salmonids as a means of improving the survival of otherwise unviable hybrids (Scheerer & Thorgaard 1983), modifying life-history traits (Seeb et al 1993), increasing disease resistance (Parsons et al 1986) and preventing the establishment of domesticated fish stocks in natural environments or interbreeding with wild stocks (Galbreath & Thorgaard 1995).…”

Section: Chromosome Set Manipulationmentioning

confidence: 99%

“…1984). The generation of triploid hybrids has also been tested in salmonids as a means of improving the survival of otherwise unviable hybrids (Scheerer & Thorgaard 1983), modifying life‐history traits (Seeb et al. 1993), increasing disease resistance (Parsons et al.…”

Section: Extent Of Use/addition Of Value: Domestication and Developmementioning

confidence: 99%

Use and exchange of salmonid genetic resources relevant for food and aquaculture

Solar¹

2009

Reviews in Aquaculture

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This review describes the global use and exchange of salmonid genetic resources for human food from fisheries and aquaculture. Trends in population abundance, variations in the harvest of wild stocks, historic transfers and worldwide translocations of stocks for fisheries and aquaculture are briefly described for seven species of Pacific salmon (Oncorhynchus), for Atlantic salmon (Salmo salar) and for Arctic charr (Salvelinus alpinus). Also considered are the tools currently used to assist in the conservation of endangered wild populations (e.g. captive breeding programmes and gene banks) and the major techniques developed to enhance the production of cultured stocks (selective breeding, hybridization, sex control, chromosome set manipulation and gene transfer). The review briefly discusses the significance of salmon production to the economy of selected countries and the complexity of allocating economic value to long‐range migratory fisheries resources that also hold direct and indirect value for aboriginal/native communities and recreational users.

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Triploid hybrids between chum salmon female×chinook salmon male have early sea-water tolerance

Cited by 19 publications

References 32 publications

Better Growth in All-Female Diploid and Triploid Rainbow Trout

Better Growth in All-Female Diploid and Triploid Rainbow Trout

Triploid Coho Salmon Outperform Diploid and Triploid Hybrids Between Coho Salmon and Chinook Salmon During Their First Year

Use and exchange of salmonid genetic resources relevant for food and aquaculture

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