Reproductive biology of invasive grass carp (Ctenopharyngodon idella) in two North American systems.

ABSTRACT: Grass carp (Ctenopharyngodon idella) are nonnative, herbivorous freshwater fish that represent an ecological threat in North American waters. However, data are limited on reproductive biology specific to wild populations in midwestern North America, despite recent concern for grass carp establishment within the Great Lakes. Basic information on reproductive traits could be useful to determine reproductive potential, inform future population modelling and provide information to aid control efforts. Our objectives were to evaluate grass carp age-at-maturity, spawning season timing, fecundity type, developmental timing and spawning strategy. Additionally, we evaluated the reliability of the gonadosomatic index (GSI) as a proxy for identifying mature grass carp and compared body condition acro

SUBMITTER: Wilson TM 

PROVIDER: S-EPMC12327189 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature