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  • Title: Size-dependent social attraction and repulsion explains the decision of Atlantic cod Gadus morhua to enter baited pots.
    Author: Anders N, Fernö A, Humborstad OB, Løkkeborg S, Rieucau G, Utne-Palm AC.
    Journal: J Fish Biol; 2017 Dec; 91(6):1569-1581. PubMed ID: 29139117.
    Abstract:
    The present study tested whether the presence of already retained fishes inside baited fish pots acted as a social attraction and affected the entrance probability of Atlantic cod Gadus morhua in a fjord in northern Norway. Video analysis revealed that the probability of an entrance initially increased with the presence of low numbers of fishes inside the pot, but subsequently decreased at a critical number of caught fishes. The critical number was dependent on the size of the G. morhua attempting to enter. This demonstrates that social attraction and repulsion play a role in G. morhua pot fishing and has important implications for the capture efficiency of fisheries executed with pots.
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