Evaluating intra- and inter-life stage density-dependent dynamics for management of perennial amphidromous fish.

ABSTRACT: Compensatory density-dependent (DD) processes play an integral role in fisheries management by underpinning fundamental population demographics. However, DD processes are often assessed only for specific life stages, likely resulting in misleading evaluations of population limitations. Here, we assessed the relative roles of intra- and inter-life stage DD interactions in shaping the population dynamics of perennial freshwater fish with demographically open populations. Specifically, we monitored populations of amphidromous banded kōkopu (Galaxias fasciatus), giant kōkopu (Galaxias argenteus), and shortjaw kōkopu (Galaxias postvectis) in five streams where migratory post-larvae are fished and in three no-take ("closed") streams located on New Zealand's South Island for two years. Using mark

SUBMITTER: Crichton BRJ 

PROVIDER: S-EPMC11610663 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature