Mustafa CEYLAN, OSMAN ÇETİNKAYA, RAMAZAN KÜÇÜKKARA, Ufuk AKÇİMEN

Reproduction Efficiency of the Medicinal Leech Hirudo verbana Carena,1820

Bu çalışmada tıbbi sülük Hirudo verbana Carena, 1820 türünün üreme verimliliği araştırılmıştır. Çalışmada ağırlıkları 5.70±3.22 g olan 25 adet döllü sülük kullanılmıştır. Sülüklerden 9.67±3.68 gün arayla, her bir kokonlama sonrasında %23.46±5.42 oranında ağırlık kaybı ile 3.20±1.87 adet kokon elde edilmiştir. Kokonların 0.93±0.38 g ağırlık, 13.81±2.26 mm çap ve 21.44±3.81 mm uzunlukta oldukları ve 29.11±13.62 mg ağırlığa sahip 12.29±5.14 adet yavru birey içerdikleri belirlenmiştir. Anaç sülük ağırlığı ile her kokonlama sonrası yüzde ağırlık kaybı ve kokonlama frekansı arasında ve kokondan çıkan yavru sayısı ile yavru bireylerin ortalama ağırlıkları arasında negatif korelasyonlar bulunmuştur. Buna karşın, anaç sülük ağırlığı ile bırakılan kokon sayısı ve kokon büyüklüğü arasında ve kokon ağırlığı ile yavru birey sayısı arasında pozitif korelasyonlar bulunmuştur. H. verbana türünün başlangıç ağırlığının yaklaşık %70'ini kaybetmesine rağmen güçlü bir üreme eforu gösterdiği belirlenmiştir. Türün üreme verimliliğinin anaç ağırlığı ile güçlü şekilde bağlantılı olduğu görülmüştür. Bu nedenle yapay üretim koşullarında ağır bireylerin tercih edilmesi ve doğal popülasyonların korunması için ağır bireylerin toplanmasının engellenmesi önerilmektedir

Tıbbi Sülük Hirudo verbanaCarena, 1820 Türünün Üreme Verimliliğ

The aim of the study was to investigate the reproduction efficiency of a medicinal leech Hirudo verbana Carena, 1820. Totally 25 gravid medicinal leeches weighted 5.70±3.22 g were used. The leeches deposited 3.20±1.87 cocoons by losing 23.46±5.42% in body weight in every cocooning at 9.67±3.68 days intervals. The cocoons, having a weight 0.93±0.38 g, diameter 13.81±2.26 mm and length 21.44±3.81 mm, had 12.29±5.14 offspring weighted 29.11±13.62 mg. It was determined the negative correlation between the adult leeches weight and the weight loss percentage after each cocoon deposition, between the adult leeches weight and the cocoon deposition frequency, and between the number of offspring and the mean weight of them. The positive correlation was found between the adult leech weights and the number of the laid cocoons, between the adult leech weight and the laid cocoon weight, and between the cocoon weight and the number of offspring. H. verbena shows strong reproduction effort, it can reproduce even loosing 70% their initial weights. Reproduction success of the medicinal leech is strictly correlated with the mature individual weight. Therefore, heavier individuals should be chosen and used in artificial production procedures. Collection of heavier specimens from natural habitats must be prohibited to conserve natural populations

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