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45020

Seasonal changes in the histology of the ovaries of Nile tilapia (Oreochromis niloticus)

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Last updated: 04 Jan 2025

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Abstract

Basic Histology of Ovaries of Nile tilapia (Oreochromis niloticus) was studied. Sampling was initiated of a total 40 female sexually mature Nile tilapia fish were collected over the period from September 2009 to August 2010. Ovaries were processed by standard histological technique. Histological characteristics of ovarian tissues and oocyte stages were studied by light microscopy. It revealed different histological structure of each oocyte developmental stage: Oogonia stage; Chromatin nucleolar stage; Perinucleolar stage; Cortical alveoli formation stage; Vitellogenic (yolk) stage; Postvitellogenic (mature) stage. Yolk nucleus (Balbiani bodies) was noticed in the ooplasm of the perinucleolar stage . During breeding season the ovary was surrounded by thin tunica albuginea. The ovigerous lamellae contained oocyte in active vitellogenesis, In addition; atretic and post ovulatory follicles were increased. During winter, the tunica albuginea reached a maximuem thickness and contained oocytes in previtellogenic stages.

DOI

10.21608/jva.2013.45020

Keywords

tilapia, Ovary, oocyte

Authors

First Name

A.

Last Name

El-Saba

MiddleName

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Affiliation

Department of Cytology & Histology Faculty of Veterinary Medicine Cairo University

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Orcid

-

First Name

M.

Last Name

Abd Rabou

MiddleName

I.

Affiliation

*Department of Cytology & Histology Faculty of Veterinary Medicine Cairo University

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Orcid

-

First Name

M.

Last Name

El-Sakhawy

MiddleName

A.

Affiliation

Department of Cytology & Histology Faculty of Veterinary Medicine Cairo University

Email

profsakhawy@yahoo.com

City

-

Orcid

-

First Name

M.

Last Name

El- Shammaa.

MiddleName

A.

Affiliation

Department of Cytology & Histology Faculty of Veterinary Medicine Cairo University

Email

-

City

-

Orcid

-

First Name

S.

Last Name

Hussein

MiddleName

M.

Affiliation

Department of Cytology & Histology Faculty of Veterinary Medicine Cairo University

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-

Orcid

-

Volume

6

Article Issue

2

Related Issue

6966

Issue Date

2013-10-01

Receive Date

2013-03-03

Publish Date

2013-10-01

Page Start

1

Page End

21

Print ISSN

1687-9988

Online ISSN

2357-0504

Article File

JVA_Volume 6_Issue 2_Pages 1-21.pdf

PDF . 2.0MB

Link

https://jva.journals.ekb.eg/article_45020.html

Detail API

https://jva.journals.ekb.eg/service?article_code=45020

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Original Article

Type Code

782

Publication Type

Journal

Publication Title

Journal of Veterinary Anatomy

Publication Link

https://jva.journals.ekb.eg/

MainTitle

Seasonal changes in the histology of the ovaries of Nile tilapia (Oreochromis niloticus)

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Article

Created At

22 Jan 2023