Dynamic rates of Freshwater Drum near the northern extent of their range: evidence of environment-recruitment relationships

Environmental Biology of Fishes, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 4, 2024

Language: Английский

Exploring the extensive movements and home range of one of North America’s most mobile fish: the freshwater drum (Aplodinotus grunniens)

Environmental Biology of Fishes, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 22, 2024

Abstract Freshwater drum Aplodinotus grunniens are a unique and ubiquitous freshwater species of the family Sciaenidae. Despite species’ wide distribution biogeography, life history, behavior, surprisingly little is known about movement ecology. In this study, we use passive acoustic telemetry tags broad-scale gridded receiver array to track interannual seasonal tagged in tributaries North South Basins Lake Winnipeg (Manitoba, Canada). First, had lower survival south basin where higher fishing pressure thought be cause mortality. We found that remarkably mobile, with mean monthly rates among highest on record for any fish. spring, fish entered rivers prior spawning. A few weeks later, most individuals moved into lake habitat they made extensive lateral movements. Home range hotspot analysis revealed population-specific patterns occupancy, elevated densities during ice-on period dispersed distributions open water. Both populations remained almost exclusively their respective basins. Homing site fidelity were apparent, nearly all returning original tagging river each successive spawning season. The results bolster existing information ecology may help enhance conservation management strategies, particularly toward addressing commercial bycatch.

Language: Английский

From neglect toward enlightenment: the conservation of native fishes in the twenty-first century

Environmental Biology of Fishes, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

Language: Английский