Artificial spawning device trials for european squid (Loligo vulgaris Lamarck, 1798) in their natural habitats

Squids have spesific reproduction behaviors. They hang their eggs on surfaces like corals, sponges, buoys and ropes, where eggs can float. However taking this kind of non-stable objects out of the sea causes deaths of the eggs that laid on them and consequently affecting the sustainabilty of population. Deaths causing by fishing activities at a critical life cycle like reproduction effects squids in harms way. That is the reason we designed an artificial spawning device ( ASD) that squids can lay their eggs on them. ASD's placed to Urla Isles and Ürkmez–Gümüldür areas on three different habitats which are seeweeds, muddy and rocky. As a result of the trials 22.225 cocoons has been counted for total from two areas and April, May, October and November has been determined as the most productive periods. ASD's located at Urla has peaked at May with 3520 cocoons and peak point for Ürkmez-Gümüldür was April with 3300 cocoons. The constructed ASD during this study would set an example as fisheries management and those of which could become prevelent in other regions of our seas.