Gökkuşağı alabalığı (Oncorhynchus mykiss Walbaum, 1792) ve kaynak alabalığı (Salvelinus fontinalus Mitchil, 1814)' nın yumurta çapı ile vücut büyüklüğü arasındaki ilişki ve yumurta verimleri

Bu çalışma, Rize ili Güneysu Beldesindeki özel alabalık çiftliğinde yürütülmüştür. Gökkuşağı (Oncorhynchus mykiss) alabalığı ile kaynak (Salvelinus fontinalis) alabalığı anaçlarının yumurta büyüklüğü ile vücut büyüklüğü arasındaki ilişki araştırılmış ve yumurta verimine etkisi karşılaştırmıştır. 3 ve 4 yaşındaki alabalıklar kuru yöntemle Aralık 2002, Ocak-Şubat 2003 tarihlerinde sağılmıştır. Anaç gökkuşağı alabalıkları ortalama 44,3±7,394 cm uzunluğunda, 1050,3±461,027 g ağırlığında olup, yumurta verimleri 3016,8±360,320 yumurta/birey belirlenmiştir. Yumurta çapı da 4,82±0,339 mm olarak bulunmuştur. Kaynak alabalıklarında ise damızlık boyu 33,9±3,900 cm ve ağırlığı 526,8±202,098 g olarak tespit edilmiştir. Yumurta verimleri de 1449,2±373,186 yumurta/birey ve yumurta çapları 4,28±0,261 mm olarak bulunmuştur. Her iki alabalığın kendi aralarındaki damızlık ağırlık ile yumurta verimleri ve yumurta çapları karşılaştırıldığında pozitif bir ilişki olduğu tespit edilmiştir (r=0,91, r=0,69, p

Anahtar Kelimeler:

gökkuşağı alabalığı, Salvelinus fontinalis, döllenme gücü, vücut ölçümleri, balık yavrusu, yumurta üretimi

The relatinoship and the fecundity between the egg size and the body weight of rainbow trout (Oncorhynchus mykiss Walbaum, 1792) and brook trout (Salvelinus fontinalis Mitchil, 1814)

This study was conducted in a private fish farm in Güneysu, Rize. The relationship between egg size and body weight of the rainbow trouts and the brook trouts was examined and its influence was compared with the fecundity. The trouts at the age of 34 were stripped in November, 2002, January and February, 2003 with the dry method. That the length average of rainbow trouts was 44,3±7,394 cm, that the weight average was 1050,3±461,027 g and that the fecundity was 3016,8±360,320 egg each were determined. The egg size was measured as 4,82±0,339 mm. On the other hand, these situation were seen in the brook trouts: The brood length average was 33,9+3,900 cm and the weight one was 526,8±202,098 g. The fecundity and the egg size were calculated as 1449,2+373,186 egg each and 4,28±0,261 mm. When the brood weights of both of the trouts were compared with the fecundity and the egg size, it was seen there was a positive relationship between them (r=0,91, r=0,69, p<0,05). At the same time, when the brood weight, the fecundity and the egg size of the rainbow trouts were compared to the brook trouts1 ones, the difference between them was found significant (p<0,01).

Keywords:

rainbow trout, Salvelinus fontinalis, fecundity, body measurements, fry, egg production,

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Akbulut, B., İ. Okumuş, N. Başçınar, İ. Z. Kurtoğlu, ve T. Şahin, 1998, Egg Production in a Brook Trout (Salvelinus fontinalis) Broodstock: Fecundity, Egg Size and Correlation of Body Weight, The proceeding of the First International Symposium on Fisheries and Ecology, 24 Sep. 1998, Trabzon.

Alkan, M.Z., 1997, The growth features of The Brook Trout (Salvelinus fontinalis) in Sea and Fresh Water in Eastern Black Sea Conditions (in turkish), Yüksek Lisans Tezi, KTÜ Fen Bilimleri Enstitüsü, Trabzon.

Aras, N.M., E. M. Kocaman, ve M. S. Araş, 2000, General Fisheries and Fundamental Principals of Aquaculture (in turkish), Atatürk Üniv. Ziraat Fak. Ders Yayınları No 216, Erzurum.

Beacham, T.D. and C. B. Murray, 1993, Fecundity and Egg Size Variation in North American Pasific Salmons. Journal of Biology, 42:485-508.

Bondari, K, G. O. Ware, B. G. Mullinix, and J. A. Joyce, 1985, Influence of brood fish size on the breeding performance of channel catfish. Prog. Fish-Cult. 47,21-26.

Bromage, N., J. Hardiman, J. Jones, J. Springate, and V. Bye, 1990, Fecundity, egg size and total egg volume differences in 12 stocks of rainbow trout Oncorhynchus mykiss Richardson. Aquaculture, Fisheries Management, 21.269-284.

Bromage, N., J. Jones, C. Randall, M. Thrush, B. Davies, J. Springate, J. Duston, and G. Barker, 1992, Broodstock Management, Fecundity, Egg Quality and the Timing of Egg Production in the Rainbow trout (Oncorhynchus mykiss). Aquaculture, 100:141-166.

Çelikkale, M.S., 1994, Aquaculture of Inland Water Fish (in turkish). Cilt 1, II Basım, K.T.Ü., Sürmene Deniz Bilimleri Fakültesi Yay., Trabzon. Duncan, D.B., 1971, Multiple Range and Multiple F-tests. Biometries, 11: 313-323.

Edwards, D.J., 1978, Salmon and Trout Farming in Norway, Fishing News Books Ltd., Famham Surrey, England. Emre, Y. ve V. Kürüm, 1998, Trout Farming Techniques in Ponds and Cages (in turkish), Ankara.

Gall, G.A.E. and P. A. Crandel, 1992, The Rainbow Trout, Aquaculture, 100,1- 10.

Hellwig, J., 1981, Eine Einführung in das SAS, SAS Institute Inc., Cary, NC, 97. Kayam, S. ve M.A. Canyurt, 2001, The Effects of Photoperiod Applications on Fecundity of Rainbow Trout (Oncorhynchus mykiss) (in turkish), XI. Ulusal Su Ürünleri Sempozyumu 04-06 Eylül 2001, Hatay.

Kurtoğlu, İ.Z., 1996, The Analysis of Reproduction Features of Rainbow Trout (Oncorhynchus mykiss) (in turkish), Yüksek Lisans Tezi, KTÜ Fen Bilimleri Enstitüsü, Trabzon.

Kurtoğlu, İ.Z., İ. Okumuş, ve M. Çelikkale, 1998, Determination of Growth Performance of Fingeriings and Egg Production Features of Rainbow Trout (Oncorhynchus mykiss) Broodstocks in a Commercial Fish Farm in The Eastern Black Sea Region (in turkish). Türk Veterinerlik ve Hayvancılık Dergisi. TÜBİTAK-DOĞA 22 (6), 489-496.

Okumuş, İ., C. Üstündağ, İ. Z. Kurtoğlu, ve N. Başçınar, 1997, Quality Features, Fecundity and Stripping time of Rainbow Trout (Oncorhynchus mykiss) Broodstocks Stocked in Sea Cages and Fresh Water Ponds (in turkish). IX - Ulusal Su Ürünleri Sempozyumu 17-19 Eylül 1997, İsparta.

Okumuş, İ., N. Başçınar, M. Z. İkan, ve İ. Z. Kurtoğlu, 1998, Growth and Culture Potential of Brook Trout (Salvelinus fontinalis) in Sea and Fresh Water in The Eastern Black Sea Conditions (in turkish), Doğu Anadolu Bölgesi III Su Ürünleri Sempozyumu 10-12 Haziran 1998, Erzurum.

Pennell, W. and B. A. Barton, 1996, Principles of Salmonid Culture. Developments in Aquaculture and Fisheries Science, Vol:26, The , Netherlands.

Rasmussem, R.S. and T. H. Ostenfeld, 2000, Effect of Growth Rate on Quality Traits and Feed Utilization of Rainbow trout (Oncorhynchus mykiss) and Brook trout (Salvelinus fontinalis), Aquaculture, Vol: 184 (3-4), 327-337.

Sharma, S.C., J. R. Dhanze, and B. S. Katoch, 1989, Fecundity of Rainbow Trout (Salmo gairdnerii Richarson) Under the Temperature Conditions of f Himachal Prudish, India, Journal of Animal Sciences, 59 (12), 1577-1579.

Shepherd, J. and N. Bromage, 1988, Intensive Fish Farming, First Publishing, Billing and Sons Ltd, Worcester, 404.

Springate, J., N. Bromage, and R. Cumaranatunga, 1985, The Effect of Different Rations on Fecundity and Egg Quality in the Rainbow trout (Salmo gairdnerii Richarson). In Nutrition and Feeding in Fish., Academic Press, 371-391.

Tarn, W.H. and P. D. Payson, 1986, Effects of Chronic Exposure to Sublethal pH on Growth, Egg Production and Ovulation in Brook trout (Salvelinus fontinalis), Can. J. Fish.Aquat. Sci., 43:275-280.

Türk, C ve M. Dörücü, 2001, The Determination of Survival Rates of Larvaes and The Corelations Between Egg Diameter and Body Size of of Rainbow Trout (Oncorhynchus mykiss) (in turkish), XI. Ulusal Su Ürünleri Sempozyumu 04-06 Eylül 2001, Hatay.