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FOOD AND FEEDING HABITS OF BAY AD FISH BAGRUS BAJAD (FORSSKAL, 1775) IN El-NOZHA HYDRODROME, ALEXANDRIA, EGYPT

Article

Last updated: 01 Jan 2025

Subjects

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Tags

Fisheries

Abstract

In order to elucidate the food and feeding habits of Bagrus bajed fish, stomach contents of 188 specimens with total body length ranging from 22 to 71cm were examined. Samples were collected monthly during the period from July 2000 to December 2001 from the commercial catch of El-Nozha Hydrodrome. The results of relative gut index indicated that B. bajed is carnivore. The range of its food material is wide, including cichiid species (Oreochromis niloticus, Oreochromis aureus, Sarotherodon galilaeus and Tilapia zillii), mullets ( Mugil cephalus and Liza ramada ), Clarias garlepinus, fish eggs, amphipods (Corophium volutator), shrimps ( Leander serratus) , aquatic insects (chironomid larvae and Coleoptera), vegetable matter and detritus. The maximum feeding intensity was in spring, while the lowest was in winter. Seasonal variation in the diet composition of B bajed revealed that fish prey was the main food item eaten throughout the year except in spring, where it represents the second important food item- after crustaceans. Variation in food species with fish length revealed an increase in the percentage of fish prey in the diet of this species. The diversity in diet of B. bajed, revealed low values in spring increasing in autumn and winter to reach the maximum in summer. Selectivity coefficient for fish prey group of B. bajed showed that cichiid species were negatively selected (-0.08), while the positively selected fishes were Clarias gariepinus (+0^57) and mullets (+ 0.29).

DOI

10.21608/ejabf.2003.1774

Keywords

Bagrus bajed, food, Feeding habits, El-Nozha Hydrodrome

Authors

First Name

Shnoudy

Last Name

Bakhoum

MiddleName

-

Affiliation

National Institute of Oceanography and Fisheries, Alexandria. Egypt

Email

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City

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Orcid

-

First Name

Samir

Last Name

Faltas

MiddleName

-

Affiliation

National Institute of Oceanography and Fisheries, Alexandria. Egypt

Email

-

City

-

Orcid

-

Volume

7

Article Issue

3

Related Issue

383

Issue Date

2003-06-01

Receive Date

2017-03-29

Publish Date

2003-06-01

Page Start

197

Page End

211

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_1774.html

Detail API

https://ejabf.journals.ekb.eg/service?article_code=1774

Order

10

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

FOOD AND FEEDING HABITS OF BAY AD FISH BAGRUS BAJAD (FORSSKAL, 1775) IN El-NOZHA HYDRODROME, ALEXANDRIA, EGYPT

Details

Type

Article

Created At

22 Jan 2023