Seasonal variation in reproductive activity and biochemical composition of flat oyster (Ostrea edulis) in the Homa Lagoon, Izmir Bay, Turkey
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Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Consejo Superior Investigaciones Cientificas-Csic
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The reproductive cycle of the flat oyster, Ostrea edulis Linnaeus, 1758, in Homa Lagoon, Izmir Bay, Turkey was examined from August 2008 to July 2009. Gonad samples were analysed histologically in order to determine the sex ratio and gonad development stage. Overall, the sex ratio was recorded as 2.2% female, 42.6% male, 37% hermaphrodite and 17.9% inactive. Glycogen content showed considerable variations between August and February, but decreased gradually thereafter. However, glycogen did not directly affect the reproductive cycle. Total lipid content was positively correlated with temperature and inversely correlated with salinity. In addition, this parameter was influenced by the reproductive activity, which is correlated with the fluctuation of the condition index and gonad index (P<0.05). However, the relationship between the protein index and the gonad index was negative (P<0.05). The results of this study showed that protein was the major energy resource. The condition index varied between 2.69 +/- 0.91 (February) and 12.29 +/- 1.45 (April) during the year. With respect to meat yield, oyster quality changed from fine to special, except in December and February.
Açıklama
Anahtar Kelimeler
flat oyster, Ostrea edulis, reproductive cycle, biochemical composition, Aegean Sea, Homa Lagoon
Kaynak
Scientia Marina
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
79
Sayı
4
