Age, Growth and reproduction of Acanthalburnus microlepis, Filippi 1863 from the Yağan Region of the Aras River, Turkey
[ N/A ]
Tarih
2001
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Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Bu araştırmada, Temmuz 1996 ve Haziran 1998 tarihleri arasında Aras Nehri nin Yağan bölgesinden aylık olarak yakalanan 1105 adet Acanthalburnus microlepis türü incelenmiştir. örnekler 1-7 yaşlar arasında dağılım göstermiş olup, %51.49 u erkekler, %48.51 i dişilerden oluşmaktadır. Dişiler, erkelerden daha büyük boy ve yaşlara ulaşmış olup, Von Bertalanffy büyüme parametreleri L?= 29.87 cm, K= 0.1049, to= -1.92 olarak hesaplanmıştır. Boy-ağırlık ilişkileri erkek ve dişiler için sırasıyla; W=0.0099L3.098 ve W=0.0118L3.052 olarak hesaplanmıştır. Her iki cinsiyette de 2 yaşında cinsi olgunluğa ulaşan bireylerde üreme Mayısın ilk haftasında başlayıp, Temmuzun sonuna kadar devam etmiştir. Fekondite 2830-9705 adet/dişi arasında değişmiş olup, balığın boyu, yaşı, gonad ve toplam ağırlığı ile birlikte artmıştır.
The age, growth and reproduction characteristics of 1105 Acanthalburnus microlepis from the Yağan region of the Aras River, Turkey, were determined from monthly samples. Ages ranged from 1 to 7 years. The sex ratio was approximately 1.0 (51.49 % males, 48.51 % females). Females attained greater size and age than males. Von Bertalanffy growth parameters were: $L_{0}$= 29.87 cm, K= 0.1049, $t_{0}$= -1.92. The length-weight relationships for males and females were found to be W=0.0099$L^{3.098}$ and W=0.0118$L^{3.052}$ respectively. The condition coefficients of males and females were calculated as 1.192 and 1.209 respectively. Both sexes matured at the age of 2 years. Spawning started in early May and continued to the end of July. Fecundity ranged from 2830 to 9705 eggs/female and correlated significantly with fish length, weight, age and gonad weight.
The age, growth and reproduction characteristics of 1105 Acanthalburnus microlepis from the Yağan region of the Aras River, Turkey, were determined from monthly samples. Ages ranged from 1 to 7 years. The sex ratio was approximately 1.0 (51.49 % males, 48.51 % females). Females attained greater size and age than males. Von Bertalanffy growth parameters were: $L_{0}$= 29.87 cm, K= 0.1049, $t_{0}$= -1.92. The length-weight relationships for males and females were found to be W=0.0099$L^{3.098}$ and W=0.0118$L^{3.052}$ respectively. The condition coefficients of males and females were calculated as 1.192 and 1.209 respectively. Both sexes matured at the age of 2 years. Spawning started in early May and continued to the end of July. Fecundity ranged from 2830 to 9705 eggs/female and correlated significantly with fish length, weight, age and gonad weight.
Açıklama
Anahtar Kelimeler
Biyoloji
Kaynak
Turkish Journal of Zoology
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Scopus Q Değeri
Cilt
25
Sayı
2
