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Journal of Marine Biology
Volume 2015, Article ID 804971, 6 pages
http://dx.doi.org/10.1155/2015/804971
Research Article

Comparison between Otoliths and Length Based Ageing and Growth of African Armoured Searobin (Peristedion cataphractum L. 1758; Teleostei, Peristediidae) off the Southern Coasts of Sicily (Mediterranean Sea)

1Institute for Coastal Marine Environment (IAMC), National Research Council (CNR), Spianata S. Raineri 86, 98122 Messina, Italy
2Institute for Coastal Marine Environment (IAMC), National Research Council (CNR), Via L. Vaccara 61, 91026 Mazara del Vallo, Italy

Received 8 July 2015; Accepted 15 September 2015

Academic Editor: Jakov Dulčić

Copyright © 2015 Teresa Bottari et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The recovering of Peristedion cataphractum otoliths collected between 1991 and 1992 from specimens sampled off the southern coasts of Sicily has allowed a direct ageing and growth estimation to be compared with the length based method estimates produced in successive years. Overall, 855 left otoliths (sagittae) were recovered, measured, and read as a whole surface. The core and rings distances were also measured to perform back-calculation. The otolith length-body length relationships were allometric. Back-calculated lengths at age were in agreement with the lengths estimated with otolith readings. Present results showed a good congruency between otoliths and length based method.