Production of Spotless Allotriploids from Female Non-Spotted Rainbow Trout (Houraimasu),Oncorhynchus mykiss, and Male Amago Salmon,O. rhodurus

Autor:	Katsuya Hattori, Yukio Seko
Rok vydání:	1999
Předmět:	Fishery endocrine system animal structures Ecology urogenital system animal diseases Semi-major axis Zoology Rainbow trout Aquaculture industry Aquatic Science Biology digestive system
Zdroj:	Journal of Applied Aquaculture. 8:11-15
ISSN:	1545-0805 1045-4438
DOI:	10.1300/j028v08n04_02
Popis:	A new phenotype, spotless allotriploids, was introduced into the aquaculture industry. Spotless allotriploids were produced from female non-spotted rainbow trout, Oncorhynchus mykiss, and male ama-go salmon, landlocked type of O. rhodurus. These allotriploids combine the favorable characteristics of the good flavor of amago salmon, faster growth (compared to that of amago salmon), and absence of spots, preferred by the market. The relationship between the non-spot character (gene) and the external appearance of the allotriploids was traced by analyzing the erythrocyte major axis, the allozymes, and the progeny test in each maternal genotype. Results indicate that spotless allotriploids can be produced by using female dominant homozygotic (hh) non-spotted rainbow trout. When females are heterozygotic (hn) non-spotted rainbow trout, the offspring produced are both spotted and spotless allotriploids in approximately equal proportions.
Databáze:	OpenAIRE
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