Morkaraman Koyunlarında Ossicula Auditus'un Eşeysel Dimorfizminin ve Homotipik Varyasyonlarının Morfometrik Olarak İncelenmesi

Year 2024, Volume: 13 Issue: 2, 118 - 122, 18.12.2024

Funda Aksünger Karaavcı , Ali Koçyiğit

https://doi.org/10.31196/huvfd.1530720

Abstract

Bu çalışmada, Morkaraman koyunlarında ossicula auditus'u oluşturan kemiklerin morfometrik özelliklerinin belirlenmesi, cinsiyetler ve yönler arasındaki farklılıkların ortaya konulması amaçlanmıştır. Bu amaçla çalışmada 24 adet (12 dişi/12 erkek) Morkaraman koyunu kafatası kullanıldı. Cranium’lar maserasyona tabi tutulduktan sonra cavum tympani'deki ossicula auditus'lar diseke edildi ve doğrusal ölçümler alınarak morfometrik veriler belirlendi. Elde edilen morfometrik verilerin cinsiyete göre dimorfik yapıları ve homotipik varyasyonları istatistiksel olarak hesaplanmıştır. Ossicula auditus'u oluşturan kemiklerin sırasıyla malleus, incus ve stapes olduğu görülmüş, elde edilen morfometrik veriler analiz edildiğinde sol malleus kemikçiğinde,caput mallei uzunluğu (P<0.01) ile malleus uzunluğu, caput mallei genişliği ve manubrium mallei uzunluğu (P<0.001) parametrelerinde cinsiyetler arasında istatistiksel olarak dimorfik farklılıklar olduğu tespit edildi Sağ incus kemikçiğinde crus breve uzunluğu, LSC (P<0.001), sol incus kemikçiğinde ise crus longum uzunluğu ve corpus incudis uzunluğu (P<0.01), crus breve uzunluğu ve corpus incudis (P<0.001) parametrelerinde cinsiyetler arasında istatistiksel olarak dimorfik farklılıklar olduğu belirlendi. Erkek koyunlarda malleusta caput mallei uzunluğu (P<0.01), malleus uzunluğu ve manubrium malleiuzunluğu (P<0.001), dişi koyunlarda ise incusta corpus incudis uzunluğu (P<0.001) parametrelerinde homotipik varyasyon tespit edilirken, diğer parametrelerde simetrik farklılık bulunmadı (P>0.05). Kemikçiklerin morfometrik parametrelerinin korelasyon analizinde pozitif yönde zayıf, orta ve güçlü korelasyon gözlenirken, negatif yönde sadece zayıf korelasyon gözlenmiştir. Sonuç olarak, Morkaraman koyunlarının ossicula auditis kemiklerinin morfometrik parametrelerinin belirlenmesinin taksonomik ve deneysel çalışmalara katkı sağlayacağı düşünülmektedir.

Keywords

Dimorfizm, Homotipik varyasyon, Morfometri, Ossicula auditus

Morphometric Investigation of Sexual Dimorphism and Homotypic Variations of Ossicula Auditus in Morkaraman Sheep

Abstract

In this study, it was aimed to determine the morphometric characteristics of the bones forming the ossicula auditus of Morkaraman sheep and to reveal the differences between sexes and sides. For this purpose, 24 (12 females/12 males) craniums of Morkaraman sheep were used in the study. After the craniums were macerated, the ossicula auditus in the cavum tympani were dissected out and morphometric data were determined by taking linear measurements. Sexually dimorphic structures and homotypic variations of the obtained morphometric data were statistically calculated. It was observed that the bones forming the ossicula auditis were malleus, incus and stapes, respectively; when the morphometric data obtained were analyzed, it was determined that there were statistically dimorphic differences between sexes in the parameters of malleus lenght, width of the caput mallei and length of the manubrium mallei (P<0.001), Lenght of the caput mallei (P<0.01) in the left malleus ossicle, lenght of the crus breve (P<0.001) in the right incus ossicle, Length of the crus longum and length of the corpus incudis (P<0.01), length of the crus breve and width of the corpus incudis (P<0.001) in the left incus ossicle. Homotypic variation was detected in the length of the caput mallei (P<0.01), length of the malleus and lenght of the manubrium mallei (P<0.001) parameters in malleus in male sheep, and width of the corpus incudis (P<0.001) parameter in incus in female sheep. At the same time, no symmetrical difference was found in other parameters (P>0.05). In the correlation analysis of the morphometric parameters of the ossicles, weak, moderate and strong correlation was observed in the positive direction, while only weak correlation was observed in the negative direction. As a result, it is thought to contribute to taxonomic and experimental studies by determining the morphometric parameters of the ossicula auditis bones of Morkaraman sheep.

Keywords

Dimorphizm, Homotypic variation, Morphometry, Ossicula auditus

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