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Age, growth and mortalities of the redbelly tilapia Tilapia zillii in Bardawil lagoon, North Sinai, Egypt
Other Title(s)
العمر، النمو و الوفيات للبلطي الأخضر في بحيرة البردويل بشمال سيناء، مصر
Joint Authors
Hasanayn, Jabir Dasuqi Ibrahim
Ali, Dua Khalil Khalid
Ahmad, Muhammad Salim
Source
Annals of Agricultural Science, Moshtohor
Issue
Vol. 55, Issue 1 (31 Mar. 2017), pp.43-48, 6 p.
Publisher
Banha University Faculty of Agriculture
Publication Date
2017-03-31
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The age, growth and mortalities of the redbelly tilapia Tilapia zillii in Bardawil lagoon were studied using 1772 specimens ranging from 8 to21.3cm Total length (TL)and 10 to 165 g total weight, They were collected from May to December, 2015.The relationship between length and weight estimated as W = 0.0189L 2.99.
Age determined by using scales’ reading technique for 312 individuals samples and the longevity of this species was found to be 5years.
Growth in length and weight at the end of each year was recorded.
The growth parameters of the von Bertalanffy equation were calculated as L∞=26.01, K=0.25yr-1 , t0= -1.37yr-1 Total, natural and fishing mortality rates were 0.48 yr−1 , 0.30 yr−1 and 0.18 yr−1 , respectively.Maximum ages of combined sexes was 5 years.
The current exploitation rate (E = 0.37) indicates that the stock of the redbelly tilapia in Bardawil lagoon was lower exploited.The length at first capture Lc was estimated at 14.4 cm.
this show that the exploitation of low tilapia in Bardawil lagoon.
The letter recommended should be banned fishing at least in length from 14 cm to give opportunity even once hatchery.
As it should catch this fish ban sexually mature during the period from
American Psychological Association (APA)
Hasanayn, Jabir Dasuqi Ibrahim& Ahmad, Muhammad Salim& Ali, Dua Khalil Khalid. 2017. Age, growth and mortalities of the redbelly tilapia Tilapia zillii in Bardawil lagoon, North Sinai, Egypt. Annals of Agricultural Science, Moshtohor،Vol. 55, no. 1, pp.43-48.
https://search.emarefa.net/detail/BIM-848792
Modern Language Association (MLA)
Hasanayn, Jabir Dasuqi Ibrahim…[et al.]. Age, growth and mortalities of the redbelly tilapia Tilapia zillii in Bardawil lagoon, North Sinai, Egypt. Annals of Agricultural Science, Moshtohor Vol. 55, no. 1 (2017), pp.43-48.
https://search.emarefa.net/detail/BIM-848792
American Medical Association (AMA)
Hasanayn, Jabir Dasuqi Ibrahim& Ahmad, Muhammad Salim& Ali, Dua Khalil Khalid. Age, growth and mortalities of the redbelly tilapia Tilapia zillii in Bardawil lagoon, North Sinai, Egypt. Annals of Agricultural Science, Moshtohor. 2017. Vol. 55, no. 1, pp.43-48.
https://search.emarefa.net/detail/BIM-848792
Data Type
Journal Articles
Language
English
Notes
Record ID
BIM-848792