Erdinç ŞAHİNÖZ, Zafer DOĞU, Faruk ARAL, Ramazan ŞEVİK, Hüseyin Hasan ATAR

Reproductive characteristics of Mullet (Liza abu H., 1843) (Pisces, Mugilidae) in the Atatürk Dam Lake, southeastern Turkey

Bu çalışmada Fırat Nehir Sistemi‟ndeki, Atatürk Baraj Gölü'nde bulunan Liza abu (Pisces Mugilidae)‟nun (n=821); yaş, yumurta sayısı, cinsiyet ve gonadosomatik indeks (GSI) gibi bazı üreme özellikleri dikkate alınarak üreme biyolojisi incelendi. Ocak 2004 ile Aralık 2005 arasındaki dönem boyunca; total ağırlık ($W _t$), total uzunluk ($L _t$) ve fekondite (F) verileri arasındaki ilişki araştırılmıştır. İncelenen balıkların yaşları 1 ile 5 arasında değişti. Yumurtalı dişi (89): total dişi (413): total örnek (810) oranları sırasıyla 1: 4,64:9,10 olarak belirlendi. En yüksek gonadosomatik indeks değeri dişilerde Nisan ayında belirlenirken, erkeklerin Mayıs ayı oldu. Total ağırlık ($W _t$) ve fekondite (F) ile, total uzunluk ($L _t$) ve fekondite (F) arasındaki ilişki sırasıyla $F _W$ = 25,5+0,00583$W _t$ ($R^ 2$= 0,557) ve FL= 14,2+0,000373 $L _t$ ($R^ 2$= 0,496) olarak belirlendi. Erkek ve dişilerde total ağırlık ($W _t$) ve gonad ağırlığı ($W _g$) arasındaki ilişki sırasıyla $W _t$ = 38,5+2,55$W _g$ ($R^ 2$= 0,222) ve $W _t$= 36,8+4,55$W _g$ ($R^ 2$=0,331) olarak belirlendi.

Anahtar Kelimeler:

Mugil, üreme özellikleri, eşeysel olgunluk, döllenme gücü, gonadosomatik indeks, yumurta bırakmak

Atatürk Baraj Gölü’ndeki Kefal Balığı, Liza abu (H, 1843) (Pisces Mugilidae)’nun üreme özellikleri

In this study reproductive biology of Liza abu (Pisces Mugilidae) from Atatürk Dam Lake in the Euphrates River Basin was observed. Some reproductive characteristics such as age, egg number, sexual determination, gonadosomatic index (GSI) of Liza abu (n=821) are taken into consideration. The relationship between total weight ($W _t$), and total length ($L _t$) and fecundity (F) were investigated during the period from January 2004 to December 2005. The ages of investigated fish ranged from 1 to 5. The ratio of the numbers of fish samples with egg (89): total of female (413): total sample of Liza abu (810) were determined as 1:4.64:910 respectively. Though the highest gonadosomatic index (GSI) of female was found in April, male‟s was highest in May. The relationships between the total weight ($W _t$) and fecundity (number of eggs= F), total length ($L _t$) and fecundity (F) of L. abu were found as $F _W$ = 25.5+0.00583$W _t$ ($R^ 2$= 0.557) and $F _L$= 14.2+0.000373 Lt ($R^ 2$= 0.496) respectively. Relationship between total weight ($W _t$) and gonad weight ($W _g$) in males and females were found as $W _t$=38.5+2.55$W _g$ ($R^ 2$=0.222) and $W _t$= 36.8+4.55$W _g$ ($R^ 2$=0.331), respectively.

Keywords:

Mugil, reproductive traits, sexual maturity, fecundity, gonadosomatic index, spawning,

PDF

___

Al-Yamour, K.Y., Allose, S.B. and Al-Jafary, A.R. 1988. Some biological aspects of Liza abu (Heckel) Mugilidae, in Al-Daoodi Drain. (Baghdad, Iraq). Journal of Environmental Science and Health, Part A, Environmental Science and Engineering, 23:497-508.
Bagenal, T. 1978. Methods for assessment of fish production in freshwaters. Blackwell Scientific Publications, London: 75-102.
Bozkurt, R. 1994. Fish Systematics of Atatürk Dam Lake and the streams fallen into its, MSc thesis. Şanlıurfa: Harran University Sci. Enst., Dep. of Zootechnics.
Chilton, D.E. and Beamish, R.J. 1982. Age determination methods for fishes studies by the ground fish program at the Pacific Biologial Station, Canadian Fisheries and Aquatic Sciences, 60: 1-102.
Coad, B.W. 1980. A Provisional annotated check-list of the freshwater fishes of Iran. Journal of Bombay Natural Science, 76: 86-105.
Coad, B.W. 2007. Freshwater Fishes of Iran Species, Accounts Mugilidae. http://www.briancoad.com/ species%20accounts/ Mugilidae-freshwater.htm.
DSI 2009. http://www.dsi.gov.tr/tricold/ataturk.htm
Duman, E. and Çelik, A. 2001. Fishes Caught in Bozova Region of Atatürk Dam Lake and Their Production. E.U. J. of Fisheries and Aquatic Sciences, 18: 65-69.
Fowler, A.J., McLeay, L. and Short, D.A. 1999. Reproductive mode and spawning information based on gonad analysis for the King George whiting (Percoidei: Sillaginidae) from South Australia. Marine and Freshwater Research, 50: 1–14.
Kuru, M. 1979. The freshwater fish of South-Eastern Turkey-2 (Euphrates-Tigris system). Bulletin of Natural Sciences and Engineering, 7–8: 105–114.
Lagler, K.F. 1966. Freshwater Fishery Biology. W.M.C. Brown Company, Iowa, 421 pp.
Mahdi, N. 1967. Fishes of Iraq. Ministry of Education Grant Publication, Baghdad, 82 pp.
Naama, A.K., Ahmed, H.A. and Al-Adhub, A.H.Y. 1986. Aspects of reproduction of the mullet Liza abu (Heckel, 1843) (Pisces, Mugilidae) in Al-Hammar Marsh, Iraq. Cybium, 10: 47-55.
Nasir, N.K. and Naama, A.K. 1988. Liza abu (Heckel, 1843) (Pisces, Mugilidae) A new record from Khor Al-Zubair, North-West of the Arabian Gulf, Mahasagar, 21: 113-115.
Nikolsky, G.V. 1963. The Ecology of Fishes, (Translated by L. Birkett). Academic Press, London, 352 pp.
Nikolsky, G.V. 1969. Theory of Fish Population Dynamics. Otto Science Publishers, Koenigstein, 317 pp.
Öztürk, Ş. 2001. Muğla (Fethiye, Dalaman, Ortaca) bölgesindeki sivrisinek balığı (Gambusia affininis (Baird-Girard, 1853)) populasyonunun bazı biyolojik özelliklerinin incelenmesi. PhD thesis, Isparta: Süleyman Demirel University.
Smith, B.B. and Walker, K.F. 2004. Spawning dynamics of common carp in the River Murray, South Australia, shown by macroscopic and histological staging of gonads. Journal of Fish Biology, 64: 336–354.
Şevik, R. and Bozkurt, R. 1997. A study on Pisces systematic at Çakal Stream (Adıyaman). Mediterranean Fisheries Congress, 9-11 April, İzmir, Turkey: 889-894.
Ünlü, E., Balci, K. and Meriç, N. 2000. Aspects of the biology of Liza abu (Mugilidae) in the Tigris River (Turkey), Cybium, 24: 27–43.
West, G. 1990. Methods of assessing ovarian development in fishes: a review. Australian Journal of Marine and Freshwater Research, 41: 199–222.
Yalçın, Ş. 2004. Occurrence of the abu mullet, Liza abu (Heckel, 1843) (Pisces, Mugilidae), In Orontes River, Zoology in the Middle East, 30: 111-113.