Age, growth and reproduction of the goldband goatfish, Upeneus moluccensis (Bleeker, 1855), in İskenderun Bay, the Eastern Mediterranean

İskenderun Körfezi'nden (Doğu Akdeniz) örneklenen Paşa Barbunu balığının (Upeneus moluccensis) yaş kompozisyonu, büyüme parametreleri, yumurtlama zamanı, cinsiyet oranları, ilk cinsi olgunluğa erişme boylan ve fekonditesi araştırılmıştır. Örneklerin % 51,6'sı dişiler, % 48,4'ünü erkekler oluşturmuştur. Dişilerin total boyu 7,0 ile 20,5 cm arasında, erkeklerin ise 7,0 ile 17,8 cm arasında değişim göstermektedir. Erkek ve dişilerin boy (L) ve ağırlık (W) ilişkisi sırasıyla $W = 0,0118*L^{2.99}$ ve $W = 0,0097*L^{3.00}$ olarak saptanmıştır. Otolitlerden elde edilen yaş verileri von Bertalanffy büyüme parametrelerinin tahmininde kullanılmıştır. Hesaplanan parametreler; $L_infty$ = 25,19 cm, K = 0,197, $t_o$ = -1,002 dir. En büyük yaş, dişiler için 7, erkekler için 6 olarak belirlenmiştir. Erkek ve dişilerde 2 yaş grubu baskın bulunmuştur. İlk cinsi olgunluğa, erkekler ve dişiler 11 cm total boyda ulaşmaktadır. Aylık gonadosomatik indeks değerleri, yumurtlama zamanının yoğun olarak Haziran ve Eylül ayları arasında olduğunu göstermiştir. Fekondite (F) - boy ilişkisi, logF = -1,732 + 5,39logL (r = 0.82) olarak saptanmıştır.

İskenderun Körfezi'nde (Doğu Akdeniz) paşa barbunu balığı (Upeneus moluccensis (BLeeker, 1855)' nın yaş, büyüme ve üreme özellikleri

The age composition, growth parameters, spawning season, sex ratio, length at first sexual maturity and fecundity of the goldband goatfish (Upeneus moluccensis) caught in İskenderun Bay in the eastern Mediterranean Sea were investigated. Females and males made up 51.6% and 48.4%, respectively, of the particular population of the species. The total length of females ranged from 7.0 cm to 20.5 cm, and of males from 7.0 cm to 17.8 cm. The length (L) - weight (W) relationships for males and females were estimated as $W = 0,0118*L^{2.99}$ and $W = 0,0097*L^{3.00}$, respectively. The age data derived from otolith readings were used to estimate the growth parameters of the von Bertalanffy equation. The estimated parameters were $L_infty$ = 25.19 cm, K = 0.197 and $t_o$ = -1.002. The maximum age was 7 for females and 6 for males. The 2-year age group was dominant in the pooled data. Males and females matured at a total length of 11 cm. The monthly values of the gonadosomatic index indicated that spawning occurred mainly between June and September. The fecundity (F) - length relationship was logF = -1.732 + 5.39logL (r = 0.82).

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