İsmail DEMİRCİOĞLU, Yasin DEMIRASLAN, İftar GÜRBÜZ, Mustafa DAYAN

Geometric Morphometric Analysis of Skull and Mandible in Awassi Ewe and Ram

The aim of the study was to analyze Awassi ewe and ram skull and mandible by geometric morphometric methods. For this purpose, diff erent numbers of skulls and mandibles of adult Awassi sheep were used based on sexual dimorphism. The skull was analyzed using the photos taken from 17 samples from dorsal side and 16 samples from the left lateral side, and the mandible was analyzed using the photos taken from 20 samples from the left lateral side. In the comparison of Awassi sheep skull from the dorsal and lateral sides between the sexes, the first principal component accounted for 37.719% and 44.238% of the total shape diff erence, respectively. In mandible, the first principal component accounted for 24.92% of the total shape diff erence. The skull had an apparent dimorphism in both sides between the sexes but the same eff ect was not observed in mandible. As a result, it is considered that the results obtained would contribute to the future studies related to ruminant cranium to be performed using geometric morphometric method.

vesi Koyunu ve Koçunda Kafatası ve Mandibulanin Geometrik Morfometrik Analizi

Çalışmada İvesi koç ve koyun kafatası ve mandibula’sının geometrik morfometrik yöntemlerle analizi amaçlandı. Bu amaçla cinsiyet farkı gözetilerek farklı sayıda ergin İvesi koyunu kafatası ve mandibula’ları kullanıldı. Kafatası dorsal yönden 17, sol lateral yönden 16, mandibula ise sol lateral yönden 20 örnekten alınan fotoğrafl ardan analiz edildi. İvesi koyunu kafatasında dorsal ve lateral yönden cinsiyetler arası yapılan karşılaştırmada birinci temel bileşen toplam şekil farklılığının sırasıyla %37.719 ve %44.238’ini açıkladı. Mandibula’da ise birinci temel bileşen toplam şekil farklılığının %24.92’sini açıkladı. Kafatası her iki yönde cinsiyetler arası belirgin bir dimorfizm gösterirken, aynı etki mandibula’da gözlenmedi. Sonuç olarak elde edilen bulguların ileride planlanacak ruminantia cranium’u ile ilgili geometrik morfometrik yöntemle yapılacak çalışmalara katkı sağlayacağı düşünülmektedir.

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