Applied Microscopy
- 제27권4호
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- Pages.417-432
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- 1997
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- 2287-5123(pISSN)
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- 2287-4445(eISSN)
경골어류 시클리드과 Golden severum, Convic cichlid 및 Discus의 수정란 난막 미세구조 비교
Comparative Ultrastructures of the Fertilized Egg Envelopes in Golden severum, Convic cichlid and Discus, Cichlidae, Teleost
- Deung, Young-Kun (Dept. of Basic Science and Institute of Basic Medicine Wonju College of Medicine, Yonsei Univ.) ;
- Reu, Dong-Suck (Dept. of Basic Science and Institute of Basic Medicine Yonsei College of Medicine, Dept. of Biology, Chongju Univ.) ;
- Kim, Dong-Heui (Dept. of Basic Science and Institute of Basic Medicine Yonsei College of Medicine, Dept. of Biology, Chongju Univ.)
- 발행 : 1997.12.01
초록
The structures of the fertilized egg envelope in three species of cichlidae, golden severum (Cichlasoma severum var.), convic cichlid (Cichlasoma nigrofasciatum) and discus (Symphysodon aequifasciatus) were investigated by routine light and electron microscopies. The fertilized eggs of all three species were of the non-transparent, ellipsoidal, adhesive and non-floted type. The egg envelopes have a single micropyle, which is thought to the pathway of sperm in the area of the animal pole. In golden severum, an outer surface of egg envelope was covered by a reticular layer, that of convic cichlid was covered by an amorphous reticular layer and that of discus was covered by a branched reticular layer. The fertilized egg envelopes consisted of two distinct layers, an adhesive outer layer and an inner layer, consisted of lamellae alternating with interlamellae of lower electron density, in all three species; an inner layer of golden severum was