Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay

Turkmen, Mustafa; AKYURT, Ihsan

Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay

Mustafa TÜRKMEN, (Mustafa Kemal Üniversitesi, Su Ürünleri Fakültesi, Hatay, Türkiye)

Ihsan AKYURT (Girilmedi)

Turkish Journal of Zoology

15 0

Yıl: 2003 Cilt: 27 Sayı: 4 Sayfa Aralığı: 323 - 329 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay

Öz:

İskenderun Körfezi'ndeki çizgili mercan balığının incelenen örneklerinde toplam boy 9,1-27,7 cm arasında değişmiştir. Boy-ağırlık ilişkileri erkek (a = 0,0112, b = 3,042) ve dişilerde (a = 0,01.05, b = 3,069) izometrik büyümeden önemli bir farklılık göstermemiştir (P > 0,05). Boyca von Bertalanffy büyüme parametreleri erkekler ve dişiler için sırasıyla, $L_{infty}$ = 26,55 cm, K = 0,203 $yıl^{-1}$, $t_{0}$ = -1,81 yıl ve $L_{infty}$ = 32,64 cm, K = 0,136 $yıl^{-1}$, $t_{0}$= -2,12 yıl olarak hesaplanmıştır. Eşey oranının (E:D) 1,09/1,00 olarak saptandığı bu çalışmada, eşey dönüşümünün I ve VI. yaşlar arasında (l l ,2-22,9 cm boy aralığında) gerçekleştiği ve maksimum 22.8 cm'e kadar erkek bireylerin olduğu tespit edilmiştir. Toplam (Z), doğal (M) ve balıkçılık nedeniyle olan (F) ölümlerin sırasıyla, Z = 1,15 $yıl^{-1}$, M = 0,48 $yıl^{-1}$ ve F = 0,67 $yıl^{-1}$ olarak hesaplandığı; ve E = 0,60 olarak bulunan sömürülme oranı ile populasyonun yoğun bir şekilde avcılık baskısı altında olduğu belirlenmiştir. Nisanın ikinci yarısından Ağustos başına kadar uzun bir süreyi kapsayan üreme faaliyeti, yoğun olarak Mayıs ayında gerçekleşmiştir, ilk eşeysel olgunluk boyları erkekler ve dişiler için sırasıyla 13,4 ve 13,9 cm olarak hesaplanmıştır.

Anahtar Kelime: Lithognathus mormyrus izmaritgiller vücut ağırlığı eşeysel farklılaşma üreme özellikleri eşey oranı balık avlama ölüm oranı vücut uzunluğu büyüme mevsimsel değişimler İskenderun Körfezi

Konular: Biyoloji

İskenderun Körfezi'ndeki çizgili mercan balığının, Lithognathus mormyrus L., büyüme özellikleri, cinsiyet dönüşümü ve ölüm oranları

Öz:

The total length of examined samples of striped sea bream in iskenderun Bay ranged from 9.1 to 27.7 cm. The length-weight relationship constants for males (a = 0.0112, b = 3.042) and females (a = 0.0105, b = 3.069), showed no significant difference from isometric growth (P < 0.05). Von Bertalanffy growth parameters in length were $L_{infty}$ = 26.55 cm, K = 0.203 $y^{-1}$ and t0 = -1.81 y for males and $L_{infty}$ = 32.64 cm, K = 0.136 $y^{-1}$ and t0 = -2.12 y for females. Sex inversion occurred at lengths between 11.2 and 22.9 cm in age groups I-V1. Males were observed up to a length of 22.8 cm. Total, natural and fishing mortality rates were Z = 1.15 $y^{-1}$, M = 0.48 y"1 and F = 0.67 $y^{-1}$ respectively. The exploitation rate of E = 0.60 indicates that the population is being heavily exploited. Reproductive activity of striped sea bream in iskenderun Bay took place between the second half of April and early August, with the greatest intensity in May. Lengths at first maturity were 13.4 cm for males and 13.9 cm for females.

Anahtar Kelime: fishing mortality body length growth seasonal variation Iskenderun Bay Lithognathus mormyrus sea bream body weight sex differentiation reproductive traits sex ratio

Konular: Biyoloji

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Turkmen M, AKYURT I (2003). Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. , 323 - 329.
Chicago	Turkmen Mustafa,AKYURT Ihsan Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. (2003): 323 - 329.
MLA	Turkmen Mustafa,AKYURT Ihsan Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. , 2003, ss.323 - 329.
AMA	Turkmen M,AKYURT I Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. . 2003; 323 - 329.
Vancouver	Turkmen M,AKYURT I Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. . 2003; 323 - 329.
IEEE	Turkmen M,AKYURT I "Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay." , ss.323 - 329, 2003.
ISNAD	Turkmen, Mustafa - AKYURT, Ihsan. "Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay". (2003), 323-329.

APA	Turkmen M, AKYURT I (2003). Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. Turkish Journal of Zoology, 27(4), 323 - 329.
Chicago	Turkmen Mustafa,AKYURT Ihsan Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. Turkish Journal of Zoology 27, no.4 (2003): 323 - 329.
MLA	Turkmen Mustafa,AKYURT Ihsan Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. Turkish Journal of Zoology, vol.27, no.4, 2003, ss.323 - 329.
AMA	Turkmen M,AKYURT I Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. Turkish Journal of Zoology. 2003; 27(4): 323 - 329.
Vancouver	Turkmen M,AKYURT I Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay. Turkish Journal of Zoology. 2003; 27(4): 323 - 329.
IEEE	Turkmen M,AKYURT I "Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay." Turkish Journal of Zoology, 27, ss.323 - 329, 2003.
ISNAD	Turkmen, Mustafa - AKYURT, Ihsan. "Growth characteristics,sex inversion and mortality rates of striped sea bream, Lithognathus mormyrus L., in İskenderun Bay". Turkish Journal of Zoology 27/4 (2003), 323-329.