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PRODUCTION OF NATURAL “XY” FEMALE OF NILE TILAPIA “OREOCHROMIS NILOTICUS” BY THERMAL MANIPULATION IN EGYPT

Article

Last updated: 29 Dec 2024

OverviewSimilar Items

Subjects

-

Tags

Animal and Poultry Sciences

Abstract

Nile tilapia (Oreochromis niloticus), a crucial freshwater fish for aquaculture, requires mono-sex culturing to prevent unwanted reproduction during grow-out, making sex control a crucial issue in aquaculture. The hormone 17-α-methyltestosterone is typically employed to generate phenotypic males in the mass production of all-male fingerlings. The extensive use of substantial amounts of sex reversal hormones in hatcheries may present health hazards to workers and ecological risks to adjacent areas. This study illustrates breeding strategies to produce genetically all-male tilapia without the use of sex hormones. This study examines the intricate sex determination system of Nile tilapia, influenced by genetic factors and temperature interactions in domestic populations. Sex reversal can occur due to feminizing temperatures experienced by fry during their sex differentiation period in shallow waters, and/or due to the impact of minor genetic variables. The 3-day post-fertilization Nile tilapia fry was reared in Agromar farm at 17-20 °C for 60 days to induce XY female sex reversal, after which the tail fin (n=21) was harvested for genotyping and cytogenetic investigation. Results indicated that there 30% of Tilapia were reversed to XY females. The present study may provide an important unique foundation for developing genetic male tilapia XY females by natural sex reversal in Egypt.

DOI

10.21608/jaesj.2024.308910.1189

Keywords

tilapia, Natural, thermal manipulation, Female XY

Authors

First Name

Mohamed

Last Name

Atallah

MiddleName

M

Affiliation

Department of Pharmacology, Faculty of Veterinary Medicine, Alexandria University, Alexandria, Egypt

Email

atrexpharmaceuticalindustries@gmail.com

City

-

Orcid

-

First Name

Radwa

Last Name

Abdel-Kader

MiddleName

M.

Affiliation

Department of Zoology-Animal Physiology, Faculty of Science, Alexandria University, Alexandria, Egypt.

Email

radwa.abdelkader.24@gmail.com

City

-

Orcid

-

Volume

23

Article Issue

3

Related Issue

51788

Issue Date

2024-12-01

Receive Date

2024-08-01

Publish Date

2024-12-01

Page Start

1

Page End

21

Print ISSN

1687-1464

Online ISSN

2735-5098

Article File

JAESJ_Volume 23_Issue 3_Pages 1-21.pdf

PDF . 839.3kB

Link

https://jaesj.journals.ekb.eg/article_394212.html

Detail API

https://jaesj.journals.ekb.eg/service?article_code=394212

Order

394,212

Type

Full research articles

Type Code

2,324

Publication Type

Journal

Publication Title

Journal of Agricultural and Environmental Sciences

Publication Link

https://jaesj.journals.ekb.eg/

MainTitle

PRODUCTION OF NATURAL “XY” FEMALE OF NILE TILAPIA “OREOCHROMIS NILOTICUS” BY THERMAL MANIPULATION IN EGYPT

Details

Type

Article

Created At

29 Dec 2024