Comparative study of masticatory muscles in the goose (Anser anser domesticus) and the long-legged buzzard (Buteo rufinus)

Abstract

In this study, six adult long-legged buzzards (Buteo rufinus) weighing 1000-1200 g and five adult geese (Anser anser domesticus) weighing 4500-5000 g with different feeding patterns were used. Goose has eight masticatory muscles named as m. adductor mandibula externus, m. adductor ossis quadrati, m. depressor mandibula, m. pterygoideus, m. pseudotemporalis profundus, m. pseudotemporalis superficialis, m. protractor pterygoidei and m. protractor quadrati. Due to the absence of m. pseudotemporalis profundus, long-legged buzzard has seven masticatory muscles. Differences has been detected between these species in means of some muscle’s origo and insertio and their parts. In goose, m. adductor mandibula externus was formed from three parts, named as pars rostralis, pars ventralis and pars profunda, but in long-legged buzzard it is formed by two parts named as pars rostralis and pars profunda. While m. depressor mandibula was constituted from two parts in goose, the same muscle was observed as a single part in long-legged buzzard. Furthermore, in the goose, m. pterygoideus was detected as having three parts named as pars ventralis, pars intermedialis and pars dorsalis, but in long-legged buzzard it was formed by only one part which is thicker compared to the other masticatory muscles

Keywords

• Anatomy
• goose
• long-legged buzzard
• masticatory muscle

Kaz (Anser anser domesticus) ve kızıl şahin’de (Buteo rufinus) çiğneme kaslarının karşılaştırmalıolarak incelenmesi

Abstract

Bu çalışmanın materyalini farklı beslenme alışkanlığına sahip 6 adet 1000-1200 gr ağırlığında kızıl şahin (Buteo rufinus) ile 5 adet 4500-5000 gr ağırlığında ergin evcil kaz (Anser anser domesticus) oluşturdu. Çiğneme kasları kazda m. adductor mandibula externus, m. adductor ossis quadrati, m. depressor mandibula, m. pterygoideus, m. pseudotemporalis profundus, m. pseudotemporalis superficialis, m. protractor pterygoidei ve m. protractor quadrati olmak üzere toplam sekiz adet, kızıl şahinde ise m. pseudotemporalis profundus’un bulunmaması nedeniyle yedi adet olarak belirlendi. İncelenen türlerde bu kaslardan bazılarının parçaları ile origo ve insertiosunda da farklılıklar saptandı. Kazda m. adductor mandibula externus, pars rostralis, pars ventralis ve pars profunda olmak üzere üç parça iken kızıl şahinde pars rostralis ve pars profunda olmak üzere iki kısımdı. Musculus depressor mandibula kazda iki parçadan oluşurken kızıl şahin’de ise sadece bir parçaydı. Bunlardan başka m. pterygoideus, kazda pars ventralis, pars intermedialis ve pars dorsalis olmak üzere üç kısımdı. Fakat aynı kas kızıl şahin’de diğer kaslarıyla karşılaştırıldığında oldukça kalın olan tek parçalı bir kas olarak belirlendi

Keywords

• Anatomi
• çiğneme kası
• kaz
• kızıl şahin

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