Influences of population density on polyandry and patterns of sperm usage in the marine gastropod Rapana venosa.

ABSTRACT: Polyandry is a common mating strategy in animals, with potential for sexual selection to continue post-copulation through sperm competition and/or cryptic female choice. Few studies have investigated the influences of population density on polyandry and sperm usage, and paternity distribution in successive broods of marine invertebrates. The marine gastropod Rapana venosa is ideal for investigating how population density influences the frequency of polyandry and elucidating patterns of sperm usage. Two different population density (12 ind/m(3) and 36 ind/m(3)) treatments with two replications were set to observe reproductive behaviors. Five microsatellite markers were used to identify the frequency of multiple paternity and determine paternal contributions to progeny arrays in 120 egg mass

SUBMITTER: Xue DX 

PROVIDER: S-EPMC4800675 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature