Knowledge of recruitment to a fishery is particularly important in short-lived species, such as most cephalopods, in which there is a complete turnover of biomass every 1 or 2 years. Our study deals with the age, growth, and mortality estimation of loliginids paralarvae (Alloteuthis media, Alloteuthis subulata and Loligo vulgaris). Seventeen oceanographic surveys - between June and November 2017- were carried out. Four 24h surveys were undertaken along Cies and Ons islands, five 12h night surveys around the Ría de Vigo and seven 24h surveys along the northern coast of Galicia (NW Spain, NE Atlantic). A total of 208 loliginids were found from the north and south of Galician coast; all of them were genetically identified. All the individuals that were not damaged were measured to analyse morphometric differences between individuals. For these analyses, it was used a LEICA M205 stereomicroscope and LEICA Application Suite (LAS) image analysis system. Mantle length (ML), Total length (TL), Head length (HL), Fin length (FL) and right and left Tentacles length (RTeL, LTeL) were dorsally measured. Mantle lengths of the loliginid paralarvae ranged from 1,486 and 6,845 mm. Afterwards, statoliths were removed and growth increments counted. The genetic identification of each animal will serve to properly estimate growth rate by loliginid species since the previous studies with paralarvae dealt at family level. The results will be discussed in order to evaluate the influence of the different life cycles of each loliginid species in the management of these socioeconomically important squids in Galician waters

Cephalopod International Advisory Council Conference 2018, Cephalopod Research Across Scales: From Molecules to Ecosystems, November 12-16, St. Petersburg, Florida, USA

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