Marmara Denizi’nde Citharus linguatula (Linnaeus, 1758)’nın Büyüme Parametreleri ve Üreme Biyolojisi

Öz

Marmara Denizi'nde ekonomik açıdan önemli bir tür olan Citharus linguatula araştırılmıştır. Türün boy-ağırlık ilişkisi, yaş, büyüme, üreme zamanı ve ilk eşeysel olgunluk boyu belirlenmiştir. Toplam 236 birey analiz edilmiştir, toplam boy ve ağırlık değerleri sırasıyla 7,5 – 26,5 cm TL (17,11 ± 3,62 cm) ve 2,67 – 180,81 g (44,07 ± 1,84 g) arasında değişmiştir. Boy-ağırlık ilişkisi parametreleri tüm bireyler için W=0,0047×TL3,17 olarak hesaplanmıştır. Büyüme tipi her iki cinsiyet için de pozitif allometridir. Bireylerin yaşları 1 ile 4 arasında değişmektedir. Cinsiyetlere göre von Bertalanffy büyüme parametreleri, dişilerde L∞=23,44 cm, K=0,74 yıl-1 ve t0=-0,09 yıl, erkeklerde L∞=20,75 cm, K=0,56 yıl-1 ve t0=-1,14 yıl olarak belirlenmiştir. İlk eşeysel olgunluk boyu erkekler için 17,6 cm TL, dişiler için 16,7 cm TL bulunmuştur. Eşeysel olgunluk, K ve GSI değerleri birlikte değerlendirildiğinde, C. linguatula'nın üreme dönemi Eylül ve Aralık ayları arasında belirlenmiştir.

Anahtar Kelimeler

• büyüme
• Boy-ağırlık ilişkisi
• Eşeysel olgunluk
• Marmara Denizi
• kancaağız pisi balığı

Proje Numarası

TAGEM/HAYSÜD/2014/05/01

Growth Parameters and Reproductive Biology of Citharus linguatula (Linnaeus, 1758) from the Sea of Marmara (Turkey)

Öz

An economically important species of Citharus linguatula was investigated in the Sea of Marmara (Eastern Mediterranean, Turkey). Length-weight relationships, growth parameters, reproductive time, and first sexual maturity length of the species were determined. A total of 236 individuals were analyzed, total length and weight varied from 7.5 to 26.5 cm TL (17.11±3.62 cm) and 2.67 to 180.81 g (44.07±1.84 g), respectively. The length-weight relationship was calculated as W=0.0047*TL3.17 in total. The growth type was positive allometry for both sexes. Total individuals were ranged in age between 1 and 4. According to sexes, von Bertalanffy growth parameters were calculated as L∞=23.44 cm, K=0.74 per year, and t0=-0.09 year for females and L∞=20.75 cm, K=0.56 per year, and t0=-1.14 year for males. The size at first maturity was 17.6 cm TL for males, and 16.7 cm TL for females. When sexual maturity, K, and GSI values were evaluated together, the reproduction period of C. linguatula was determined between September and December.

Anahtar Kelimeler

• Growth
• length-weight relationship
• sexual maturity
• Marmara Sea
• spotted flounder

Destekleyen Kurum

Tarım ve Orman Bakanlığı, Tarımsal Araştırmalar ve Politikalar Genel Müdürlüğü

Proje Numarası

TAGEM/HAYSÜD/2014/05/01

Teşekkür

The authors would like to thanks the crew of Yalcınoglu Fishing vessel and Murat ŞİRİN, Koray CABBAR, G. Erman UGUR, Hasim INCEOGLU, Habib BAL, Ahmet OKTENER and Guzın GUL for their help in the field work.

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