Growth, mortality, recruitment and yield of rainbow trout, Oncorhynchus mykiss Walbaum, 1792 in Karacaören-I Dam Lake, Turkey


CİLBİZ M., Yalim F. B.

Pakistan Journal of Zoology, cilt.49, sa.3, ss.825-832, 2017 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 49 Sayı: 3
  • Basım Tarihi: 2017
  • Doi Numarası: 10.17582/journal.pjz/2017.49.3.825.832
  • Dergi Adı: Pakistan Journal of Zoology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.825-832
  • Anahtar Kelimeler: Condition factor, Length-weight relationship, Oncorhynchus mykiss, Rainbow trout, Recruit analysis, Van bertalanffy growth curve
  • Isparta Uygulamalı Bilimler Üniversitesi Adresli: Evet

Özet

In this study, growth parameters (i.e. condition factor, length-weight relationship, K, LCopyright 2017 Zoological Society of Pakistan∞, t0), mortality rate (Z, M, and F), recruitment pattern and yield were investigated for Oncorhynchus mykiss in Karacaören I Dam Lake. Fish were collected on monthly basis between July, 2013 and June, 2014. Growth parameters were analyzed by ELEFAN with monthly length-frequency data. The b values of the length-weight relationship, mean condition factor, K (growth coefficient), L∞ (asymptotic length) and t were estimated as 3.207, 1.13, 0.33 year-1, 36.50 cm and -0.476 years, respectively. Total mortality (Z) by length-converted catch curve was estimated at 0.83 year-1, fshing mortality (F) 0.14year-1, natural mortality (M) 0.69 year-1 and exploitation rate (E) 0.17. According to the result of Relative Yield/Recruit analysis estimated E >E, so in this context stock of O. mykiss was not overexploited in Karacaören I Dam Lake.