Hüseyin ARIKAN, Murat TOSUNOĞLU, Mehmet K. ATATÜR, Bayram GÖÇMEN

Kuzeydoğu Anadolu, Uzungöl’de Yaşayan Pelodytes caucasicus Boulenger, 1896 (Anura: Pelodytidae)’un Üreme Biyolojisi Üzerine Bazı Yorumlar

Pelodytes caucasicus’un Do¤u Karadeniz Bölgesi’ndeki da¤›l›fl sahas› içinde yer alan Uzungöl (Trabzon)’de 2001-2002 y›llar› aras›nda (2 y›l) yap›lan gözlemlere göre, türün üreme döneminin Temmuz ortalar›ndan Eylül ortalar›na kadar sürdü¤ü saptanm›flt›r Üreme periyodunda periyodik olarak suyun ekolojik özellikleri (temperatür, pH ve oksijen) ile ilgili gece ve gündüze ait ölçüm de¤erleri al›nm›flt›r. ‹lk yumurta b›rak›m› 22 Temmuz 2001 gecesi gözlenmifltir Yumurta kümeleri gölcü¤ün en derin k›sm›nda, su yüzeyine ulaflmayan vejetasyon üzerine b›rak›lm›flt›r. B›rak›lan her bir yumurta kümesinin 446-492 yumurta içerdi¤i tespit edilmifltir. ‹lk yumurta b›rak›m›ndan 5 gün sonra larvalar›n ç›kt›¤›, oldukça h›zl› geliflen larvalar›n 31-35 gün sonra metamorfozunu tamamlayarak sudan karaya ç›kt›klar› gözlenmifltir. Bir sonraki üreme mevsiminde k›fl ve ilkbahar aylar›n› hibernasyon halinde geçiren metamorfozunu tamamlamam›fl örnekler gözlenmifltir.

Anahtar Kelimeler:

Do¤u Karadeniz Bölgesi, Pelodytes caucasicus, Anura, Üreme Biyolojisi

Some Comments on the Breeding Biology of Pelodytes caucasicus Boulenger, 1896 (Anura: Pelodytidae) from Uzungöl, Northeast Anatolia

Observations during 2001 and 2002 at Uzungöl Lake (Trabzon), situated within the distribution area of Pelodytes caucasicus in the Eastern Black Sea region of Turkey, established that the usual breeding season of the species extended from mid July to mid September. Periodic day and night measurements of some ecological characteristics of the lake (temperature, pH, dissolved oxygen) were recorded during the breeding season. The first spawning was observed during the night of 22 July 2001. Clutches (egg masses) were laid in the deeper parts of the lake, on submerged vegetation. The clutches contained between 446 and 492 eggs. The first larvae hatched 5 days after the spawning. They completed their metamorphosis in 31-35 days and then emerged on land. After the first (2001) breeding season, non-metamorphosed hibernating larvae were seen during the winter and spring months.

Keywords:

Eastern Black Sea Region Caucasian Parsley Frog, Pelodytes caucasicus, Anura, Breeding Biology,

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