Cüce Semender, Lissotriton schmidtleri (Raxworthy, 1988) (Amphibia: Urodela)’nin Farklı Yüksekliklerde Yaşayan İki Populasyonunda Yaş ve Büyüklük Karşılaştırması

Abstract

Bu çalışmada, Lissotriton schmidtleri (Cüce Semender)’nin iki farklı yükseklikten (Efes, 5 m ve Karagöl, 816 m a.s.l.) elde edilen popülasyonunun yaş yapısı ve vücut ölçülerinin karşılaştırılması yapılmıştır. Parmak enine kesitlerindeki durgunluk çizgilerinin (LAG’ların) sayımıyla yetişkinlerin yaşını tespit etmek için iskelet kronolojisi yöntemi uygulanmıştır. İki popülasyonda dişi taraflı eşeysel dimorfizm gözlenmiştir. Efes ve Karagöl popülasyonlarında hem erkek hem de dişi bireyler 2 yaşında eşeysel olgunluğa erişmişlerdir. Maksimum yaş veya ömür uzunluğu erkeklerde 10 yıl, dişilerde 8 yıl olarak hesaplanmıştır. Tüm bireyler ele alındığında Efes popülasyonunun Karagöl popülasyonundan daha genç olduğu tespit edilmiştir. İki popülasyon için, her iki cinsiyette de yaş ve büyüklük arasında anlamlı pozitif bir korelasyon bulunmuştur.

Keywords

• Semender
• yaş yapısı
• iskelet kronolojisi
• uzun ömürlülük
• Türkiye

Age and Body Size Comparison of the Turkish Smooth Newt, Lissotriton schmidtleri (Raxworthy, 1988) (Amphibia: Urodela) Populations from Two Different Altitudes

Abstract

In this study, comparison of body size and age structure of two populations of Lissotriton schmidtleri from two different altitudes (Efes, 5 m and Karagöl, 816 m a.s.l.) was carried out. We applied phalangeal skeletochronology to obtain the age of adults by counting the lines of arrested growth (LAGs) in phalangeal cross-sections. Female-biased sexual dimorphism was observed in both populations. Both male and female individuals in Efes and Karagöl populations reached sexual maturity at the age of 2. The maximum age or longevity was calculated as 10 years in males and 8 years in females. Considering all individuals, Karagöl population was found to be older than Efes population. For both populations, a significant positive correlation was found between age and size in males and females.

Keywords

• Newt
• age structure
• skeletochronology
• longevity
• Türkiye

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