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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.
초록· 키워드
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In the case of genus Nothobranchius, Nothobranchiidae, the morphology of fertilized eggs and ultrastructures of fertilized egg envelopes have been reported in only two fishes.
Therefore it is hard for sure to these morphological characteristics show genus specificity because of lower research samples. So, we studied the morphology of fertilized egg, and compared the ultrastructures of outer surface, micropyle, and section of fertilized egg envelopes under the light and electron microscopes from the other two species, Nothobranchius foerschi and Nothobranchius rachovii, Nothobranchiidae to find out whether these structures have the species specificity or not. Both fertilized eggs were spherical, demersal and adhesive, and have a large oil droplet. The adhesive whip-like structures were distributed on the outer surface of egg envelope, and a micropyle located on the animal pole. The fertilized egg envelope consisted of two distinct layers: an outer electron-dense layer with adhesive structures and an inner lamellae layer in both species.
The external shapes of fertilized egg and ultrastuctures of outer surface, micropyle, and section of fertilized egg envelope have same structure including results before. Our data indicate that these morphological characteristics of fertilized egg and fertilized egg envelope show genus Nothobranchius specificity.
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참고문헌 (18)
참고문헌 신청
Cameron I L / 1984 / Regulation of the permeability of the medaka fish embryo chorion by exogeneous sodium and calcium ions / J. Exp. Zool 231 : 447 ~ 454
Deung Y K / 1997 / Comparative ultrastructures of the fertilized egg envelopes in golden severum, convic cichlid and discus, Cichlidae, teleost / Kor. J. Microsc 27 : 417 ~ 4
Donovan M J / 1986 / Cortical granule exocytosis is coupled with membrane retrieval in the egg of Brachydanio / J. Exp. Zool 237 : 391 ~ 405
Hanssens M / 2006 / Nothobranchius foerschi / The IUCN red list of threatened species
Harvey B / 1983 / Permeability of intact and dechorionated zebra fish embryos to glycerol and dimethyl sulfoxide / Cryobiology 20 : 432 ~ 439
Deung Y K / 1997 / Comparative ultrastructures of the fertilized egg envelopes in golden severum, convic cichlid and discus, Cichlidae, teleost / Kor. J. Microsc 27 : 417 ~ 4
Donovan M J / 1986 / Cortical granule exocytosis is coupled with membrane retrieval in the egg of Brachydanio / J. Exp. Zool 237 : 391 ~ 405
Hanssens M / 2006 / Nothobranchius foerschi / The IUCN red list of threatened species
Harvey B / 1983 / Permeability of intact and dechorionated zebra fish embryos to glycerol and dimethyl sulfoxide / Cryobiology 20 : 432 ~ 439
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