Beta
2129

Growth and gonadal maturation of Keeled mullet, Liza carinata, (Valenciennes, 1836) cultured at different salinities

Article

Last updated: 01 Jan 2025

Subjects

-

Tags

Fisheries

Abstract

The growth experiment was conducted in fish culture outdoor cement ponds (5X4X1.2) under controlled conditions and filled with water (20 m3). The experiment was carried out through 210 days. Every day, about 15-20% of water content was replaced to maintain water quality. Fish in all ponds were fed about 5% of total fish weight on artificial diet contains 25% fish meal. Experimental salinities (5, 15, 25, and 40 ‰) in four ponds (triplicate design) were obtained by diluting sea water with dechlorinated tap water (by passing through active charcoal). Fish at salinities 5 ‰ and 40 ‰ exhibited greater growth in length (cm) 10.77±0.097, 11.39±0.088 and weight (gm) 12.3±0.319, 15.02±0.44, respectively (P<0.05). Fishes at salinities of 15 ‰ and 25 ‰ represented lower growth in length 9.15±0.23, 9.1±0.10 and weight
7.41±0.53, 7.83±0.29, respectively (P>0.05). It was found that salinity does not affect significantly the condition factor of the individuals. Condition factor was ranging from 0.93 to 1.03 and there were no significant differences (P<0.05) between fish that had been subjected to different salinity treatments. Gonad somatic index (GSI) was
significantly influenced by salinity (P>0.05). The GSI for both males and females have nearly the same fluctuation trends which reached to the maximum level at salinity of 40 ‰ for both sexes; 8.9 for female and 2.1 for male. The highest
coefficient "b" of length-weight relationship were 2.839, 2.847 for fishes at salinities 40 ‰ and 5 ‰, respectively they closed to 3 it is indicated that isometric growth. The gonad maturation of salinity 5‰ reached to ripe stage for male and yolk vesicle stage for female but it reached to ripe stage at salinity 40‰ for both sex. These results
suggest that Liza carinata is a suitable candidate for low salinity brackish water aquaculture. This could lead to significant cost savings when rearing fish inland. 

DOI

10.21608/ejabf.2012.2129

Keywords

Liza carinata, salinity, Growth, gonadal maturation

Authors

First Name

Kamal

Last Name

Elboray

MiddleName

-

Affiliation

National Institute of Oceanography and Fisheries, Suez, Egypt

Email

-

City

-

Orcid

-

First Name

Magdy

Last Name

EL-Halfawy

MiddleName

-

Affiliation

National Institute of Oceanography and Fisheries, Suez, Egypt

Email

-

City

-

Orcid

-

First Name

Waheed

Last Name

Mahmoud

MiddleName

-

Affiliation

National Institute of Oceanography and Fisheries, Suez, Egypt

Email

-

City

-

Orcid

-

First Name

Amal

Last Name

Ramadan

MiddleName

-

Affiliation

National Institute of Oceanography and Fisheries, Suez, Egypt

Email

-

City

-

Orcid

-

First Name

Yousry

Last Name

Soliman

MiddleName

-

Affiliation

National Institute of Oceanography and Fisheries, Suez, Egypt

Email

-

City

-

Orcid

-

First Name

Amal

Last Name

Amin

MiddleName

-

Affiliation

National Institute of Oceanography and Fisheries, Suez, Egypt

Email

-

City

-

Orcid

-

Volume

16

Article Issue

2

Related Issue

439

Issue Date

2012-05-01

Receive Date

2017-04-03

Publish Date

2012-05-01

Page Start

107

Page End

119

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_2129.html

Detail API

https://ejabf.journals.ekb.eg/service?article_code=2129

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

Growth and gonadal maturation of Keeled mullet, Liza carinata, (Valenciennes, 1836) cultured at different salinities

Details

Type

Article

Created At

22 Jan 2023