A new method for estimating length-dependent capture modes in gillnets: a case study in the Danish cod (<i>Gadus morhua)</i> fishery

Abstract Gillnets are used world-wide for harvesting groundfish and pelagic species at sea in freshwater. Little consideration has been given to how fish caught gillnets, even though the capture mode provides valuable information understanding gear catchability. This paper describes a new method of estimating length-dependent modes gillnets. Using this method, we investigated cod (Gadus morhua) commercial monofilament nylon Cod is target several fisheries Northern Atlantic. first time was formally related size with direct representation experimental observations. The results demonstrated that gillnets clearly designed gilling. However, were dependent, small being by mouth larger maxillary. application relevant when technologists evaluate different characteristics improve or selectivity. Changing hanging ratio, instance, replacing twine thicker biodegradable material may considerably change their effect on efficiency.