Life-history updates and stock assessment of Macrodon atricauda (teleostei, sciaenidae) from southern Brazil.

摘要: The coastal demersal sciaenid fish Macrodon atricauda has been intensely fished since the 1950s along the southern Brazilian coast, resulting not only in decreasing abundance but also in long-term changes in its life history. Previous studies reported long-term increases in individual growth, size, and age at maturity. Using individual observed length-at-age, we did not observe the previously reported growth changes despite the increase in the mean length of older individuals from 1976 to 2023. These observed changes did not affect the estimation of the von Bertalanffy growth parameters, likely due to the species' faster growth at earlier ages and short lifespan. The length at first maturity remains smaller than the previous estimations from the 1970s but has not changed since the 2000s. The population dynamics assessed considering the updated life history parameter, including the size at maturity changes …