マダイおよびニベの稚魚期の成長における半きょうだい間遺伝変異〔英文〕

概要

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A half-sib family consisting of two full-sib groups was prepared using the spawners of red seabream and nibe-croaker to examine the genetic variability in growth of juvenile stage. Each fullsib group was marked by electrophoretic genetic markers. In order to eliminate the environmental deviation from the difference in growth between full-sib groups, each half-sib family was reared in the same tank consistently for 45 days in the case of red seabream and 60 days in the case of nibe-croaker respectively. The percentage deviation between full-sib groups was 10.5% in total length and 32.1% in body weight in nibe-croaker, and 7.0% in total lengty and 23.8% in body weight in red seabream. The degree of these differences reach the significant level. The values of heritability of body length and body weight in a half-sib family were remarkbly high.
日本水産學會の論文