Gillnet Selectivity for Three Freshwater Alien Invasive Fish Species in a Long-Term Monitoring Scenario
نویسندگان
چکیده
Gillnet selectivity is poorly understood for most freshwater fish species, particularly invasive alien species. However, their use to determine mesh could be essential establishing management measures, such as the selective removal of exotic This study aims assess size species in a restored lentic ecosystem. Therefore, we analysed gillnet based on experimental fishing trials performed by using multimesh gillnets. Twice year, 8 years, nylon gillnets were set up Estany d’Ivars i Vila-sana, shallow lake Catalonia (NE Iberian Peninsula). We caught 4105 individuals belonging three widely distributed species—3583 pikeperches (Sander lucioperca (Linnaeus, 1758)), 115 common roaches (Rutilus rutilus 1758)) and 407 carps (Cyprinus carpio, Linnaeus, 1758). The SELECT method was applied fit six different uni- bimodal models. As result, bi-lognormal provides best line with previous studies that found size–frequency data skewed right or multimodal models when high numbers are captured. These results provide information required community presence these
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ژورنال
عنوان ژورنال: Hydrobiology
سال: 2022
ISSN: ['2673-9917']
DOI: https://doi.org/10.3390/hydrobiology1020017