Variance in Reproductive Success is Driven by Environmental Factors, not Mating System, in Bonytails.

ABSTRACT: Studying the reproductive ecology of aggregate broadcast spawning fishes is difficult because it generally is not feasible to sample all potential parents and unambiguously assign their offspring. We used molecular-based parentage analysis to gain insights into the reproductive ecology of the endangered Bonytail, and to evaluate whether protected off-channel habitats could be used as an alternative to hatchery production. By genotyping adults and offspring stocked (n = 4130) into two experimental backwaters across three years, we determined that most adults (82-97%) contributed to progeny production across years and backwaters, with one exception. Both sexes mated multiply and the number of mates and family size were positively correlated. There was also a positive correlation between adul

SUBMITTER: Osborne MJ 

PROVIDER: S-EPMC6373448 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature