Age-Dependent Cranial Variations in Mesocricetus brandti (Mammalia: Rodentia) Distributed in Turkey

Nuri YİĞİT

Makale detayları

Age-Dependent Cranial Variations in Mesocricetus brandti (Mammalia: Rodentia) Distributed in Turkey

Yazarlar:

Nuri YİĞİT

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Zoology 2003 Vol.27 Issue 1, pp.65-71

Belge Tipi:

Makale

Yayın Tarihi:

12/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000778464

Sıklık:

İki Aylık

eISSN:

1303-6114

pISSN:

1300-0179

Anahtar kelimeler:

Özet:

 

Animals were assigned to four age groups according to molar wear, field notes and external and cranial measurements. Six days-old animals were referred to newborn, up to 30 days as young and thereafter as adult; animals with very worn molars were considered old. In addition to the statistical differences among age groups, it was determined that the main morphological differences were in the interorbital constriction, the shape of the braincase, the ridges and the position of occipital condyles. While the incisors and the first molars erupted in seven days-old animals, the second and third molars begun to erupt after seven and 30 days, respectively. Thus, it was concluded that the characteristics of animals younger than 30 days-old, and the cranial variations in the skull morphologies of adult and old animals should not be taken into consideration in taxonomic evaluations.

 

Animals were assigned to four age groups according to molar wear, field notes and external and cranial measurements. Six days-old animals were referred to newborn, up to 30 days as young and thereafter as adult; animals with very worn molars were considered old. In addition to the statistical differences among age groups, it was determined that the main morphological differences were in the interorbital constriction, the shape of the braincase, the ridges and the position of occipital condyles. While the incisors and the first molars erupted in seven days-old animals, the second and third molars begun to erupt after seven and 30 days, respectively. Thus, it was concluded that the characteristics of animals younger than 30 days-old, and the cranial variations in the skull morphologies of adult and old animals should not be taken into consideration in taxonomic evaluations.

Makale detayları

Age-Dependent Cranial Variations in Mesocricetus brandti (Mammalia: Rodentia) Distributed in Turkey

Yazarlar:

Nuri YİĞİT

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Zoology 2003 Vol.27 Issue 1, pp.65-71

Belge Tipi:

Makale

Yayın Tarihi:

12/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000778464

Sıklık:

İki Aylık

eISSN:

1303-6114

pISSN:

1300-0179

Mesocricetus brandti

age variation

cranial variation

Turkey

Sayı

Makale detayları

Age-Dependent Cranial Variations in Mesocricetus brandti (Mammalia: Rodentia) Distributed in Turkey

Yazarlar: Nuri YİĞİT

Yayıncı: TUBITAK

Dergi: Turkish Journal of Zoology 2003 Vol.27 Issue 1, pp.65-71

Belge Tipi: Makale

Yayın Tarihi: 12/2002

Belge Dili: Türkçe

Document ID (Org No.): 2000778464

Sıklık: İki Aylık

eISSN: 1303-6114

pISSN: 1300-0179

Mesocricetus brandti

age variation

cranial variation

Turkey

Sayı

Yazarlar:

Nuri YİĞİT

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Zoology 2003 Vol.27 Issue 1, pp.65-71

Belge Tipi:

Makale

Yayın Tarihi:

12/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000778464

Sıklık:

İki Aylık

eISSN:

1303-6114

pISSN:

1300-0179