The ultrastructure of the spermatozoon of Octopus ocellatus Gray, 1849 (Cephalopoda: Octopoda)

Jianmin Yang; Weijun Wang; Xiaodong Zheng; Quanli Zhou; Yu Zhang; Guohua Sun; Xiangquan Liu

doi:10.1007/s00343-010-9995-y

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The ultrastructure of the spermatozoon of Octopus ocellatus Gray, 1849 (Cephalopoda: Octopoda)

Updated：2023-05-16

- The ultrastructure of the spermatozoon of Octopus ocellatus Gray, 1849 (Cephalopoda: Octopoda)
- Journal of Oceanology and Limnology Vol. 29, Issue 1, Pages: 199-205(2011)
- Affiliations：
  
  1. Shandong Marine Fisheries Research Institute
  2. Fisheries College Ocean University of China
- Author bio：
- Funds：
- DOI：10.1007/s00343-010-9995-y
  CLC：
- Online First：22 September 2010，
  
  Published：2011
- Accepted：
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Yang, J., Wang, W., Zheng, X. et al. The ultrastructure of the spermatozoon of Octopus ocellatus Gray, 1849 (Cephalopoda: Octopoda)., Chin. J. Ocean. Limnol. 29, 199–205 (2011). https://doi.org/10.1007/s00343-010-9995-y
DOI：

Yang, J., Wang, W., Zheng, X. et al. The ultrastructure of the spermatozoon of Octopus ocellatus Gray, 1849 (Cephalopoda: Octopoda)., Chin. J. Ocean. Limnol. 29, 199–205 (2011). https://doi.org/10.1007/s00343-010-9995-y DOI：

摘要

Abstract

Morphology of the spermatozoon of Octopus ocellatus was studied by light

scanning electron

and transmission electron microscopes. Sperm are 600–700 μm long

with a large number of granules in diameter about 130 nm. Each spermatozoon is composed of a head

neck

and tail. The head is made up of an acrosomal complex anterior to the nucleus. The spiral acrosomal complex consists of an electron-lucent vesicle

lacuna

and an electron-dense acrosomal vesicle. Additionally

the spiral acrosomal vesicle has numerous equidistant striations

and is surrounded by many small granules (20 nm diameter). A long straight nucleus

which is electron-densed

has a deep posterior concavity

the nuclear vacuole. At the terminal end of the nucleus is a sleeve-like structure with a concave posterior nuclear fossa (PNF). The neck is short connecting the PNF. The basal body is located in the PNF and gives rise to the axoneme. This structure connects the head

neck

and tail. The tail is divided into a middle piece and a principal piece. The middle piece

having a 9+9+2 arrangement

is surrounded by a mitochondrial sheath and terminates by an electron-dense fibrous sheath. The principal piece is the longest part of the sperm with coarse fibers tapering posteriorly. The results of this study shall provide some useful information for artificial breeding of this species.

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references

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