Toros Kurbağası, Rana holtzi Werner (1898)’in Tip Lokalitesindeki Populasyon Durumu: Azalma mı var?

Toros Da¤lar› herpetofaunas› çeflitlidir ve ço¤u tür lokal olarak boldur. Toros Kurba¤as›, R. holtzi Toros Da¤lar›’ndaki Maden Gölü’ne endemiktir. Bu türün s›n›rl› habitat›nda daha önceleri bol oldu¤u düflünülmesine ra¤men, populasyon büyüklü¤ü ve buna ait e¤ilimi belirli de¤ildir. Di¤er hayvanlarda oldu¤u gibi, ço¤u anurun geçmifl y›llarda azald›¤› veya neslinin tükendi¤i bilinmektedir. 2003 y›l›nda Toros Kurba¤as›’n›n tip lokalitesinde markala-tekrar yakala çal›flmas› yap›lm›flt›r. Amac›m›z bu çal›flma ile R. holtzi’nin do¤al yaflam ortam›nda gözlenmesi, populasyon büyüklü¤ünün hesaplanmas› ve say›ca azalman›n belirlenmesidir. Elde etti¤imiz sonuçlar bu hayvanlar›n do¤al habitatlar›nda ciddi bir azalma ile karfl› karfl›ya kald›klar›n› göstermektedir.

Population Status of the Taurus Frog, Rana holtzi Werner (1898), in Its Terra Typica: Is There a Decline?

The herpetofauna of the Taurus Mountains is diverse, and many species are locally abundant. The Taurus frog, Rana holtzi, is endemic to Maden Lake in the Taurus Mountains in Turkey. Although it was thought to be abundant in its restricted habitat, the population size of the Taurus frog and its related trend are uncertain. Like many animals, a great number of anurans have declined or become extinct over the past decades. In 2003, we conducted a mark-recapture study on the Taurus frog population in its terra typica. Our objective was to monitor R. holtzi in its terra typica to estimate its population size and assess the extent of any decline. Our results indicate that this species is facing a very high risk of decline in its natural habitat.

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Turkish Journal of Zoology-Cover
  • ISSN: 1300-0179
  • Yayın Aralığı: Yılda 6 Sayı
  • Yayıncı: TÜBİTAK