지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The tooth morphology and qualitative mineral contents on enamel surface using energy dispersive X-ray spectroscopy, (EDX) were examined in the white-toothed shrew (genus Crocidura) Crocidura lasiura and C. suaveolens and the red-toothed shrew (genus Sorex) Sorex caecutiens. In the case of C. lasiura and C. suaveolens, dental formula was found I 3/1 C1/1 P1/1 M3/3=28. The upper 1st and 2nd molars had an unequal W-shape formed by 5 cusps on the crown. The 3rd molar was found one-third the size of those of 1st and 2nd molars. The upper 1st incisor had two different sized hook-shapes and the lower 1st incisor was even. In the case of S. caecutiens, dental formula was found to be I3/1 C1/1 P3/1 M3/3=32. The upper 1st and 2nd molars had an equal W-shape on crown. The upper 3rd molar was half the size of those of the other molars. The upper 1st incisor possessed two similar sized hook-shapes and the lower 1st incisor had an uneven and serrated form. A comparison with the dental and cranial measurements revealed C. lasiura to be the largest of the three species (p＜0.001) and C. suaveolens and S. caecutiens were similar in size (p＞0.05). A qualitative analysis of mineral contents on enamel surface of the lower 1st incisor and lower 1st molar using EDX revealed C, O, P, Ca and Cu in all specimens and Pb was detected in several enamel specimens. No significant differences in the mineral contents (% weight) were observed among the three species (p＞0.05). Fe was only detected on enamel surface of S. caecutiens with red pigmented teeth. Therefore, Fe is responsible for the red tip of the teeth. These results suggest that tooth morphological characteristics including the color of the tooth tip might be used as the key classifying species belonging to Crocidura and Sorex.
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참고문헌 (23)
참고문헌 신청
Buckner CH / 1969 / The common shrew (Sorex araneus) as a predator of the winter moth (Operophtera brumata) near Oxford / England. Can Entomol 101 : 370 ~ 374
Carson KA / 1993 / Fine structure of the submandibular salivary gland of the venomous short-tailed shrew, Blarina brevicauda (Insectivora: Soricidae) / European J Morph 31 :
Churchfield S / 1990 / The natural history of shrews / A & C Black Ltd : 1 ~ 37
Eisenberg JF / 1981 / The mammalian radiations-an analysis of trends in evolution, adaptation and behavior / University of Chicago Press : 119 ~ 136
Evans AR / 2007 / High-level similarity of dentitions in carnivorans and rodents / Nature 445 : 78 ~ 81
Carson KA / 1993 / Fine structure of the submandibular salivary gland of the venomous short-tailed shrew, Blarina brevicauda (Insectivora: Soricidae) / European J Morph 31 :
Churchfield S / 1990 / The natural history of shrews / A & C Black Ltd : 1 ~ 37
Eisenberg JF / 1981 / The mammalian radiations-an analysis of trends in evolution, adaptation and behavior / University of Chicago Press : 119 ~ 136
Evans AR / 2007 / High-level similarity of dentitions in carnivorans and rodents / Nature 445 : 78 ~ 81
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