The Skull Shape Analysis of Wistar Albino Rats: A Geometric Morphometric Study

İftar Gürbüz; Yasin Demiraslan

Makale detayları

The Skull Shape Analysis of Wistar Albino Rats: A Geometric Morphometric Study

Yazarlar:

İftar Gürbüz | Yasin Demiraslan

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Veteriner Anatomi ve Fizyoloji

Dergi:

Kocatepe Veteriner Dergisi Vol.17 Issue 2, pp.132-141

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001314961

pISSN:

1308-1594

Anahtar kelimeler:

Özet:

 The aim of the study was to evaluate the skull shape of Wistar albino rats using the geometric morphometry method. For this purpose, a total of 52 adult rat skulls, 31 female and 21 male, were evaluated. Skulls were photographed from equal distances in dorsal and ventral directions. 13 and 18 landmarks were marked in dorsal and ventral images, respectively. Percentage variation values of principal components were calculated by performing principal components analysis in the MorphoJ program. Average shape graphs showing the positive and negative boundaries of the first three principal components were obtained. It was defined that scatter plot showing the degree of grouping of male and female rats according to the first and second principal components. The study also examined the allometric effect with regression. Discriminant function analysis was performed to examine gender dimorphism. As a result of the study, it was determined that the most significant shape change was in the zygomatic arc and palate regions according to individuals, while it was also in the neurocranium according to gender. We believe that the study will contribute to anatomy, biology and archeology studies on the shape of the skull.

 The aim of the study was to evaluate the skull shape of Wistar albino rats using the geometric morphometry method. For this purpose, a total of 52 adult rat skulls, 31 female and 21 male, were evaluated. Skulls were photographed from equal distances in dorsal and ventral directions. 13 and 18 landmarks were marked in dorsal and ventral images, respectively. Percentage variation values of principal components were calculated by performing principal components analysis in the MorphoJ program. Average shape graphs showing the positive and negative boundaries of the first three principal components were obtained. It was defined that scatter plot showing the degree of grouping of male and female rats according to the first and second principal components. The study also examined the allometric effect with regression. Discriminant function analysis was performed to examine gender dimorphism. As a result of the study, it was determined that the most significant shape change was in the zygomatic arc and palate regions according to individuals, while it was also in the neurocranium according to gender. We believe that the study will contribute to anatomy, biology and archeology studies on the shape of the skull.

 The aim of the study was to evaluate the skull shape of Wistar albino rats using the geometric morphometry method. For this purpose, a total of 52 adult rat skulls, 31 female and 21 male, were evaluated. Skulls were photographed from equal distances in dorsal and ventral directions. 13 and 18 landmarks were marked in dorsal and ventral images, respectively. Percentage variation values of principal components were calculated by performing principal components analysis in the MorphoJ program. Average shape graphs showing the positive and negative boundaries of the first three principal components were obtained. It was defined that scatter plot showing the degree of grouping of male and female rats according to the first and second principal components. The study also examined the allometric effect with regression. Discriminant function analysis was performed to examine gender dimorphism. As a result of the study, it was determined that the most significant shape change was in the zygomatic arc and palate regions according to individuals, while it was also in the neurocranium according to gender. We believe that the study will contribute to anatomy, biology and archeology studies on the shape of the skull.

 Çalışmada Wistar albino ratlarda kafatası şeklinin geometrik morfometri yöntemi ile değerlendirilmesi amaçlandı. Bu amaçla erişkin 31 dişi, 21 erkek olmak üzere toplam 52 adet rat kafatası değerlendirildi. Kafatasları dorsal ve ventral yönde eşit uzaklıktan fotoğraflandı. Dorsal görüntülerde 13, ventral görüntülerde 18 landmark işaretlendi. MorphoJ programında temel bileşenler analizi yapılarak temel bileşenlerin yüzde varyasyon değerleri hesaplandı ve ilk üç principal componentin pozitif negatif sınırlarını gösteren ortalama şekil grafikleri elde edildi. Erkek ve dişi ratların birinci ve ikinci temel bileşene göre gruplanma derecelerini gösteren dağılım grafiği tanımlandı. Çalışmada ayrıca regresyon ile allometrik etkiye bakıldı. Cinsiyet farkını incelemek için discriminant ayırma analizi yapıldı. Çalışma sonucunda wistar rat kafatasında bireyler arasında en belirgin şekilsel değişimin arcus zygomaticus elmacık kemeri ve damak bölgesinde olduğu, cinsiyete göre ise neurocranium da olduğu belirlendi. Çalışmanın, kafatasında cinsiyet farklılığı ile ilgili anatomi, biyoloji ve arkeoloji çalışmalarına katkı sağlayacağı kanaatindeyiz.

Makale detayları

The Skull Shape Analysis of Wistar Albino Rats: A Geometric Morphometric Study

Yazarlar:

İftar Gürbüz | Yasin Demiraslan

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Veteriner Anatomi ve Fizyoloji

Dergi:

Kocatepe Veteriner Dergisi Vol.17 Issue 2, pp.132-141

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001314961

pISSN:

1308-1594

Gender

Geometric morphometry

Rat

Shape

SkullCinsiyet

Geometrik morfometri

Kafatası

Rat

Şekil

Sayı

Makale detayları

Yazarlar: İftar Gürbüz | Yasin Demiraslan

Yayıncı: Afyon Kocatepe University

Ana Başlıklar: Veteriner Anatomi ve Fizyoloji

Dergi: Kocatepe Veteriner Dergisi Vol.17 Issue 2, pp.132-141

Belge Tipi: Makale

Yayın Tarihi: 6/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001314961

pISSN: 1308-1594

Sayı

Yazarlar:

İftar Gürbüz | Yasin Demiraslan

Yayıncı:

Afyon Kocatepe University

Ana Başlıklar:

Veteriner Anatomi ve Fizyoloji

Dergi:

Kocatepe Veteriner Dergisi Vol.17 Issue 2, pp.132-141

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001314961

pISSN:

1308-1594