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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Captured specimens of the lesser white-toothed shrew, Crocidura suaveolens were classified into three age classes by tooth wear and seasonal variations of reproductive organs were investigated. Molars of juveniles had not tooth wear and the height of the third molars were lower than the first and second molars, young adults had smooth tooth wear and the third molars reached to the first and second molars, and old adults had heavy tooth wear and the third molars also reached to the first and second molars. On the basis of histological examination, seasonal variation of breeding was confirmed that breeding season of adult males was from early February to early October, having a peak of the breeding in April and July,and non-breeding season was from in the middle of October to late January. Young and old adult males of the breeding season had large testes with enlarged seminiferous tubules filling with numerous germ cells and expanded caudal epididymides with a vast number of spermatozoa, Young and old adult males of the non-breeding season had the small testes with the extremely slender seminiferous tubules filling with only spermatogonia and the reduced caudal epididymides without spermatozoa. Males weighing more than 3.9 g in the body weight and 0.013 g in the testis and epididymis weight reached sexual maturation in breeding season, and the females weighing more than 3.8 g in body weight of the breeding season were pregnant condition having 56 litters or had the Graafian follicles and the corpus lutea in the ovary.
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참고문헌 (27)
참고문헌 신청
[학술지
Andrews SM / 1984 / Cadmium in small mammals from grassland established on metalliferous mine waste / Environ Poll 33 : 153 ~ 162
Barid DD / 1983 / Reproduction in the Arctic shrew, Sorex arcticus / J Mammal 64 : 298 ~ 301
Bishop IR / 1963 / The ecological distribution of small mammals in the Channel Islands / Mammlia 27 : 99 ~ 100
Braham HW / 1974 / The effects of DDT on energetics of the short-tailed shrew, Blarina brevicauda / Bull Environ Contam Tox 12 : 32 ~ 37
Andrews SM / 1984 / Cadmium in small mammals from grassland established on metalliferous mine waste / Environ Poll 33 : 153 ~ 162
Barid DD / 1983 / Reproduction in the Arctic shrew, Sorex arcticus / J Mammal 64 : 298 ~ 301
Bishop IR / 1963 / The ecological distribution of small mammals in the Channel Islands / Mammlia 27 : 99 ~ 100
Braham HW / 1974 / The effects of DDT on energetics of the short-tailed shrew, Blarina brevicauda / Bull Environ Contam Tox 12 : 32 ~ 37
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