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A study on age and growth characteristics of spiny gurnard ( Lepidotrigla dieuzeidei Blanc & Hureau, 1973), northeastern Mediterranean Sea
Author(s) -
Başusta A.,
Başusta N.,
Calta M.,
Ozcan E. I.
Publication year - 2017
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/jai.13384
Subject(s) - biology , mediterranean climate , zoology , ecology
Summary This study investigated the age and growth characteristics of spiny gurnard, Lepidotrigla dieuzeidei , from the northeastern Mediterranean. Samples were collected by commercial trawls during the 2012–2013 fishing seasons. A total 1,878 speciments ranged from 7.10 to 15.90 cm total length and 2.28–35.88 g in weight. Female/male ratio was 1.2/1. The total length–weight relationship was W = 0.002 TL 3.579 ( r ² = .909) for sexes combined, W = 0.0021 TL 3.551 ( r ² = .914) for males and W = 0.0019 TL 3.602 ( r ² = .904) for females. Age determination was conducted using the sagittal otoliths. Ages of examined individulas ranged from 3 to 11 years. Total length‐at‐age data were fitted using the von Bertalanffy growth model. Estimated growth functions were TL t = 18.100 [1−e − 0.14 ( t + 0.63) ] for sexes combined, TL t = 23.587 [1−e −0.08 ( t + 1.56) ] for males and TL t = 16.612 [1−e − 0.19 ( t + 0.15) ] for females.