Mating success of alternative maturation phenotypes in male Atlantic salmon, Salmo salar.

摘要: Mature male parr successfully fertilized eggs of anadromous female Atlantic salmon, Salmo salar, in competition with males under simulated natural conditions. Mating situations were created which mature and competing for the opportunity to spawn an differed allelic forms same enzyme. Females deposited into a sequence 3 or 4 nests. The mean proportion redd by increased increasing numbers present at redd, reaching 23% parr: ratios 20:1. Single fertilized, on average, 5% redd. egg nest also depended upon order construction, such that mating success was highest initial constructed lowest final nest. Parr have relatively high fertilization their size when compared smaller maturation phenotype other salmonids.