Age, growth, reproduction and feed of longnosed skate, Dipturus oxyrinchus (Linnaeus, 1758) in Saros Bay, the north Aegean Sea
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Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The age, growth, reproduction, and feeding of longnosed skate (Dipturus oxyrinchus) were studied using 179 specimens from the Saros Bay (North Aegean Sea) between March 2005 and December 2007. Composition was 49.7% females and 50.3% males. Total length of females ranged from 14.9 to 100 cm (disc width, 9.8-65 cm), and of males from 15.2 to 86.5 cm (disc width, 10-57.5 cm). Total length-weight and disc width-weight relationships are described by the equations W = 0.0008*TL3.35 and W = 0.0043*DW3.29, respectively. The age data, derived from vertebrae readings, were used to estimate the growth parameters of the von Bertalanffy equation: L-infinity = 256.46 cm, K = 0.04 year(-1), t(0) = -1.17year. The maximum age was 9 years. Males matured at 64-65 cm (disc width, 43.5 cm) and females at 82-83 cm TL (disc width, 53 cm). The stomach contained mainly Parapenaus longirostris, IRI: 93.47%.
Açıklama
Anahtar Kelimeler
Rhinobatos-Rhinobatos Linnaeus, Common Guitarfish, Iskenderun Bay, Biology, Pisces, Waters, Shark, Rays
Kaynak
Journal of Applied Ichthyology
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
26
Sayı
6
