Maximum age of bighead carp Hypophthalmichthys nobilis exceeds 30 years: Implications for anticipating invasive species establishment and impacts
Year: 2025
Type: article
Abstract: Invasive bighead carp Hypophthalmichthys nobilis have spread throughout the Mississippi River basin, negatively impacting ecosystems. We used a remnant population (32 years after stocking) to better understand H. nobilis. We observed high annual survival (>95%), but growth was relatively slow. Lapilli otolith sections were reliable aging structures but underestimated H. nobilis age by ~10%. Dorsal-fin rays and postcleithra also showed some promise for age interpretation. This study provides information about exceptionally old H. nobilis, with unique survival, growth and habitat conditions that could further inform invasion models.
Source: Journal of Fish Biology
DOI: 10.1111/jfb.70181
Authors: Jesse M. Lepak, Adam G. Hansen, Terra L. Martinez, Elizabeth A. Stewart, Dakotah J. Pinkus, Aubrey M. Pelletier, Andrew J. Treble
Institution: Colorado Parks and Wildlife
Language: English
Subfield: Nature and Landscape Conservation
Field: Environmental Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,480
Funder: Colorado Parks and Wildlife
OpenAlex ID: W4413381310