Miaad JORFİPOUR, Yazdan KEİVANY, Fatemeh PAYKAN-HEYRATI, Zaniar GHAFOURİ

Ebu Kefalinin Üreme Biyolojisi, Planiliza abu (Heckel, 1843), Karun Nehri, Güneybatı İran

Planiliza abu'nun (Mugilidae) üreme biyolojisi, Kasım 2016'dan Eylül 2017'ye kadar Ahvaz, Karun Nehri'nde yerel balıkçılar tarafından trolle yakalanan 428 örnek üzerinde araştırıldı. Erkeklerin toplam uzunluğu 10-17.1 (13.6 ± 1.26 SS) cm ve dişiler 10.5-17.3 (13.44 ± 1.35) cm. Her iki cinsiyette de balıkların yaş aralığı 0 + -7 + yaş arasında ve en bol olan yaş grubu 4+ ve cinsiyet oranı eşitti (P> 0.05). Ortalama yumurta çapı aylara göre önemli ölçüde farklıydı (P <0.05) ve bireysel boyut 0.12 ile 0.57 mm arasında değişiyordu. Mutlak verimlilik 3600 ila 48600 yumurta ve nispi verimlilik vücut ağırlığının 1 g'ı başına 120 ila 900 yumurta arasında değişiyordu. Dişilerde en yüksek hepatosomatik indeks Şubat ayında yumurta sarısı vitellogenez sırasında görüldü (1.89). Gonadosomatik indeks, yumurta çapı ve yumurtalık olgunlaşma aşamalarının aylık dağılımına göre, balığın yumurtlama mevsimi uzun ve Şubat (GSI 12.35) ve Mart'ta (GSI 12.18) pik yapar. Bu türün grup eşzamanlı üreme modeline sahip olduğu görülmektedir.

Anahtar Kelimeler:

Mugilidae, Gonadosomatik İndeks, Yumurtlama dönemi, Verimlilik, Yumurta çapı

Reproductive Biology of Abu Mullet, Planiliza abu (Heckel, 1843), in Karun River, Southwestern Iran

Some aspects of the reproductive biology of Planiliza abu (Mugilidae) were investigated by collecting of 428 specimens caught with trawl by local fishermen from Karun River, Ahwaz, from November 2016 to September 2017. Total length for males ranged between 10-17.1 (13.6±1.26 SD) cm and for females, between 10.5-17.3 (13.44±1.35) cm. The age range of fish in both sexes was between 0+-7+ years and the most abundant age group was the 4+. Sex ratio in the studied fish was equal (P>0.05). The mean egg diameter was significantly different (P<0.05) in different months and the individual size ranged between 0.12 and 0.57 mm. The absolute fecundity ranged from 3600 to 48600 eggs and the relative fecundity from 120 to 900 eggs per 1 g of body weight. The highest hepatosomatic index in females was in February during yolk vitellogenesis (1.89). Based on gonadosomatic index, egg diameter and monthly distribution of ovarian maturation stages, the spawning season of this fish is long, but peaks in February (GSI 12.35) and March (GSI 12.18). This species appears to have a group synchrony reproductive pattern.

Keywords:

Mugilidae, Gonadosomatic Index, Spawning period, Fecundity, Egg diameter,

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