Premium
Age and growth of Gerres oyena (Forsskål, 1775) on Okinawa Island, Japan
Author(s) -
Kanak M. K.,
Tachihara K.
Publication year - 2006
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2006.00804.x
Subject(s) - biology , fish <actinopterygii> , veterinary medicine , fishery , medicine
Summary Age and growth were studied for Gerres oyena (Forsskål, 1775) on Okinawa Island, southern Japan from November 2002 to November 2005. A total of 408 samples was collected ranging from 5.85 to 19.65 cm standard length ( L SL ). Male fish age was estimated at up to 6 + years, whereas females reached 8 + years as estimated by sectioned otoliths. The length–weight relationships and the von Bertalanffy growth curve were described for all individuals as: and L t = 20.54{1 − e −0.1807( t +2.8462) }, respectively. Opaque rings were formed from April to August during the spring–summer seasons.