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http://dx.doi.org/10.9729/AM.2012.42.2.061

Ultrastructure of Blacktip Grouper, Epinephelus fasciatus Spermatozoa  

Kim, Seong-Hoon (Marine and Environmental Research Institute of Jeju National University)
Lee, Chi-Hoon (Marine and Environmental Research Institute of Jeju National University)
Song, Young-Bo (Marine and Environmental Research Institute of Jeju National University)
Ju, Hea-Sung (Marine and Environmental Research Institute of Jeju National University)
Kim, Hyung-Bae (Department of Marine Bio-resources, Gangwon Provincial University)
Lee, Young-Don (Marine and Environmental Research Institute of Jeju National University)
Publication Information
Applied Microscopy / v.42, no.2, 2012 , pp. 61-66 More about this Journal
Abstract
Ultrastructural characteristics of blacktip grouper, Epinephelus fasciatus spermatozoa were investigated using transmission and scanning electron microscopy. The spermatozoa of E. fasciatus consisted of a spherical head part, a midpiece with cytoplasmic canal entrance and a flagellum with lateral fins. Internal ultrastructurally, the nucleus contains high electron dense chromatin having granular particles and has no acrosome. The centriolar complex lies outside of the nuclear fossa and it is connected by the osmophilic filaments. Also the osmophilic filaments connect between the centriolar complex and the nuclear membrane. The midpiece contains eight to nine spherical mitochondria, cytoplasmic canal and necklaces. The flagellum has a typical 9+2 axonemal structure. The lateral fins contain vesicles and a typical 9+2 axonemal structure. Consequently this study contributes to comparative grouper spermatology and provide useful systematic taxonomic characters.
Keywords
Epinephelus fasciatus; Spermatozoa; Ultrastructure;
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