Comparative Ultrastructures of the Fertilized Egg Envelopes in Nothobranchius foerschi and Nothobranchius rachovii, Nothobranchiidae, Teleostei
2
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
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.
Abstract
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.
참고문헌 (18)
- Cameron I L, "Regulation of the permeability of the medaka fish embryo chorion by exogeneous sodium and calcium ions", J. Exp. Zool, 231, pp.447~454 (1984)
- Deung Y K, "Comparative ultrastructures of the fertilized egg envelopes in golden severum, convic cichlid and discus, Cichlidae, teleost", Kor. J. Microsc, 27, pp.417~432 (1997)
- Donovan M J, "Cortical granule exocytosis is coupled with membrane retrieval in the egg of Brachydanio", J. Exp. Zool, 237, pp.391~405 (1986)
- Hanssens M, "Nothobranchius foerschi", The IUCN red list of threatened species (2006)[DOI]
- Harvey B, "Permeability of intact and dechorionated zebra fish embryos to glycerol and dimethyl sulfoxide", Cryobiology, 20, pp.432~439 (1983)
- 주경복, "Comparative Ultrastructures of the Fertilized Egg Envelopes in Danio rerio and Danio rerio var. frankei, Cyprinidae, Teleostei", 한국현미경학회지, 43(1), pp.14~20 (2013), 한국현미경학회
- 김동희, "경골어류 시클리드과 Cichlasoma managuensis의 수정란 난막 미세구조", 한국현미경학회지, 39(1), pp.9~15 (2009), 한국현미경학회
- Kim D H, "Comparative ultrastructures of the fertilized egg envelopes from three-spot gourami, pearl gourami and marble gourami, Belontiidae, teleost", Kor. J. Microsc, 29, pp.343~351 (1999)
- Kim D H, "A comparative study on the ultrastructures of the egg envelope in fertilized eggs of fishes, Characidae, three species", Kor. J. Microsc, 26, pp.277~291 (1996)
- Kim D H, "Comparative ultrastructures of the fertilized egg envelopes in three species, Cyprinidae, teleost", Kor. J. Microsc, 28, pp.237~253 (1998)
- Kim D H, "Ultrastructure of the fertilized egg envelope in tomato clown anemonefish (Amphiprion freatus), Pomacentridae, marine teleost", Kor. J. Microsc, 28, pp.273~282 (1998)
- 김동희, "경골어류 구굴무치과 얼룩동사리의 수정란 난막 미세구조", 한국현미경학회지, 32(1), pp.5~ (2002), 한국현미경학회
- 권중균, "Comparative Ultrastructures of the Fertilized Egg Envelopes in Nothobranchius guentheri and Nothobranchius patrizii, Nothobranchiidae, Teleostei", 한국현미경학회지, 45(3), pp.144~149 (2015), 한국현미경학회
- Lucas-Sánchez A, "Circadian activity rhythms during the last days of Nothobranchius rachovii's life: a descriptive model of circadian system breakdown", Chronobiol. Int, 32, pp.395~404 (2015)
- Lu C Y, "Ambient temperature reduction extends lifespan via activating cellular degradation activity in an annual fish (Nothobranchius rachovii)", Age (2015)[DOI]
- Reichard M, "Community assembly in Nothobranchius annual fishes: nested patterns, environmental niche and biogeographic history", Ecol. Evol, 7, pp.2294~2306 (2017)
- Schmehl M K, "Comparative ultrastructure of the zona radiata from eggs of six species of salmonids", Cell Tissue Res, 250, pp.513~519 (1987)
- Shidlovskiy K M, "Notes on the annual killifish species Nothobranchius rachovii (Cyprinodontiformes;Nothobranchiidae) with the description of two new species", Zootaxa, 2724, pp.37~57 (2010)