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Light and electron microscopic morphology of the fertilized egg and fertilized egg envelope of Poropanchax normani, Poeciliidae, Teleostei

김동희
한국현미경학회 (Korean Society Of Microscopy)|2022.03|Applied Microscopy|제52권 제1호|pp. 1-5|DOI 10.1186/s42649-022-00075-0

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참고문헌

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StructurePoropanchax normaniEgg envelopeFertilized eggPoeciliidae
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초록

We examined the morphology of the fertilized egg and the fine structure of fertilized egg envelopes of Poropanchax normani belonging to the family Poeciliidae, also known as Norman’s lampeye using light and electron microscopes. The fertilized eggs with narrow perivitelline space were found to be spherical and demersal, additionally containing small oil droplets in the vitelline membrane. Further, a bundle of adhesive filaments was observed to be present on one side of the fertilized egg. These filaments possessed remarkably high elasticity and were approximately 1-3 mm in length. The size of the fertilized egg was determined to be about 1.49 ± 0.07 mm ( n = 30). The outer surface appeared smooth, and adhesive filaments originating at different location of the surface of the envelope were found to be distributed around the egg envelope and were joined together to form a single long bundle in scanning electron microscopic observation. A peak-like structure formed of several straight wrinkles was observed around the micropyle. However, the complete structure of the micropyle could not be studied due to the depth at which it was located. Additionally, the total thickness of the egg envelope was ascertained to be approximately12.5–14.5 μm. The egg envelope consisted of two distinct layers, an outer electron dense layer and an inner lamellar layer, further consisting of 10 sublayers of varying thicknesses. Collectively, it was observed that the morphological characteristics of the fertilized egg, fine structures surrounding the micropyle, outer surface, adhesive structure consisting adhesive filaments, and sections of fertilized egg envelope displayed species specificity.

Abstract

We examined the morphology of the fertilized egg and the fine structure of fertilized egg envelopes of Poropanchax normani belonging to the family Poeciliidae, also known as Norman’s lampeye using light and electron microscopes. The fertilized eggs with narrow perivitelline space were found to be spherical and demersal, additionally containing small oil droplets in the vitelline membrane. Further, a bundle of adhesive filaments was observed to be present on one side of the fertilized egg. These filaments possessed remarkably high elasticity and were approximately 1-3 mm in length. The size of the fertilized egg was determined to be about 1.49 ± 0.07 mm ( n = 30). The outer surface appeared smooth, and adhesive filaments originating at different location of the surface of the envelope were found to be distributed around the egg envelope and were joined together to form a single long bundle in scanning electron microscopic observation. A peak-like structure formed of several straight wrinkles was observed around the micropyle. However, the complete structure of the micropyle could not be studied due to the depth at which it was located. Additionally, the total thickness of the egg envelope was ascertained to be approximately12.5–14.5 μm. The egg envelope consisted of two distinct layers, an outer electron dense layer and an inner lamellar layer, further consisting of 10 sublayers of varying thicknesses. Collectively, it was observed that the morphological characteristics of the fertilized egg, fine structures surrounding the micropyle, outer surface, adhesive structure consisting adhesive filaments, and sections of fertilized egg envelope displayed species specificity.

참고문헌 (27)

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관련 논문AI추천

Ultrastructure of the fertilized egg envelope from Melanotaenia praecox, Melanotaeniidae, Teleostei김동희, 손준형한국현미경학회 · Applied Microscopy2021 · 제51권 제2호Comparative Ultrastructures of the Fertilized Egg Envelopes in Nothobranchius foerschi and Nothobranchius rachovii, Nothobranchiidae, Teleostei권오윤, 김동희, 김은진, 손준형, 정동용한국현미경학회 · Applied Microscopy2017 · 제47권 제2호Comparative Ultrastructures of the Fertilized Egg Envelopes in Nothobranchius guentheri and Nothobranchius patrizii, Nothobranchiidae, Teleostei권중균, 김동희, 정한석한국현미경학회 · Applied Microscopy2015 · 제45권 제3호Ultrastructure of the fertilized egg envelopes in Hemigrammus erythrozonus, Characidae, Teleostei김동희, 김현욱, 장병수, 최은경한국현미경학회 · Applied Microscopy2019 · 제49권 제4호Ultrastructure of the Fertilized Egg Envelope from Pseudobagrus fulvidraco, Bagridae, Teleostei권오윤, 김동희, 손준형한국현미경학회 · Applied Microscopy2016 · 제46권 제3호Ultrastructure of the fertilized egg envelopes in Ancistrus cirrhosus, Loricariidae, Teleostei김동희한국현미경학회 · Applied Microscopy2020 · 제50권 제2호

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