Article: Growth rate estimation of Hexaplex (Trunculariopsis) trunculus (gastropoda: muricidae) based on mark/recapture experiments in the Ria Formosa lagoon (Algarve coast, southern Portugal).

ABSTRACT This study reports growth rates estimates for Hexaplex (Trunculariopsis) trunculus (Gastropoda: Muricidae) from mark/recapture experiments carried out in the Ria Formosa lagoon (Algarve coast, southern Portugal). A total of 726 specimens (shell length and total weight ranging between 20.65-58.36 mm and 0.86-19.89 g, respectively) were marked with Dymo tape tags and released into a fish culture earth pond. During the marking process, no adverse effects on the whelks' health and behavior or immediate postmarking mortality were detected. Periodical recapture operations were undertaken using a traditional fishing gear designated locally as "wallet-line" and by hand ...

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