Mattila, Johanna
- Department of Aquatic Resources (SLU Aqua), Swedish University of Agricultural Sciences
Abstract
Growth of Eurasian perch Perca fluviatilis L. and fish community structure between sites within a marine -protected area (MPA) and unprotected sites in the Baltic Sea were examined. Von Bertalanffy, logistic and Gompertz growth models were fitted to P. fluviatilis length at age data, and the logistic model was the most parsimonious for growth between locations. A larger mean maximum size (L.) and a smaller instantaneous growth rate (g) were found within the MPA. All three models also predicted that after age seven, fish inside the MPA would be larger. Community structure differed with more P. fluviatilis collected outside of the MPA, and more roach Rutilus rutilus (L) and bleak Alburnus alburnus (L.) collected inside the MPA. These growth differences may be indicative of recreational fishing effects on P. fluviatilis outside of the MPA, a result of complex interspecific and intraspecific species interactions, or other undetected environmental variation between locations.
Keywords
age; Gompertz; logistic; marine protected areas; recreational fishing; von Bertalanffy
Published in
Fisheries Management and Ecology
2018, volume: 25, number: 3, pages: 172-185
Publisher: WILEY
SLU Authors
UKÄ Subject classification
Fish and Wildlife Management
Fish and Aquacultural Science
Publication identifier
- DOI: https://doi.org/10.1111/fme.12277
Permanent link to this page (URI)
https://res.slu.se/id/publ/96397