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32325

Some Biological Aspect and Gonads Histology of Sepia savignyi (Blainville, 1827), in the Gulf of Suez, Egypt

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Last updated: 01 Jan 2025

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Abstract

This work is the first histological description of gonad maturation of Sepia savignyi and the beginning of future research on its basic biology. A total of 452 samples, ranged in dorsal mantle length from 3.9 to 29 cm with average 16.35 + 1.50 and total weight ranged from 19 to 1826.8 gm, with average 606.79 + 110.7, of which 269, female and 183 male were examined between September 2014 to May 2015 obtained from the Gulf of Suez, Egypt. The size at first sexual maturity (DML50) was 11.9 and 8.4 cm for female and male, respectively. The Gonadosomatic indices show that the females and males have two peaks in the year-round spawning period the first is in December (4.1 %) and (2.4%) and the second is in April (3.5%) and (2.2%) for female and male, respectively. Five stages of gonad maturation were established for the female and male, namely immature (I), maturing(II), mature (III), spawning (IV) and spent (V) based on macroscopic examination. Histological examination showed that each ovary and testis had various stages of oocyte and spermatocytes. Oogenesis of oocyte demonstrated seven stages of maturity in females as oogonia, early primary oocyte, late primary oocyte, previtellogenic oocyte, vitellogenic Oocyte, advanced vitellogenic oocyte and ripe oocytes. Spermatogenesis of testes divided into spermatogonia, primary and secondary spermatocytes, spermatid and spermatozoa.

DOI

10.21608/ejabf.2019.32325

Keywords

Sepia savignyi, Oogenesis, spermatogenesis, gonadosomatic index, Gulf of Suez

Authors

First Name

Amal

Last Name

M. Amin

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Orcid

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First Name

Alaa

Last Name

M. M. Elhalfawy

MiddleName

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Email

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City

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Orcid

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First Name

Hafz

Last Name

M. M. Khouraiba

MiddleName

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Affiliation

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Email

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City

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Orcid

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First Name

Mervat

Last Name

A. M. Ali

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Volume

23

Article Issue

2

Related Issue

5152

Issue Date

2019-04-01

Receive Date

2019-02-20

Publish Date

2019-05-20

Page Start

43

Page End

54

Print ISSN

1110-6131

Online ISSN

2536-9814

Article File

EJABF_Volume 23_Issue 2_Pages 43-54.pdf

PDF . 1.1MB

Link

https://ejabf.journals.ekb.eg/article_32325.html

Detail API

https://ejabf.journals.ekb.eg/service?article_code=32325

Order

4

Type

Original Article

Type Code

103

Publication Type

Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

https://ejabf.journals.ekb.eg/

MainTitle

Some Biological Aspect and Gonads Histology of Sepia savignyi (Blainville, 1827), in the Gulf of Suez, Egypt

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Article

Created At

22 Jan 2023