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Abstract
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Article Information:
Age, Growth and Reproduction of the Tub Gurnard, Chelidonichthys lucerna Chelidonichthys lucerna (Linnaeus, 1758) from the Egyptian Mediterranean waters off, Alexandria
Sabry, S. El-Serafy, Fahmy, I. El-Gammal, Sahar, F. Mehanna, Nasr-Allah, H. Abdel-Hamid and El-Sayed, F.E. Farrag
Corresponding Author: Sahar
Submitted: December 14, 2014
Accepted: January 27, 2015
Published: May 20, 2015 |
Abstract:
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The biology of the tub gurnard, Chelidonichthys lucerna (Linnaeus, 1758), has been studied based on data collected between August (2009) and July (2010) from the Egyptian Mediterranean water in front of Alexandria. A total of 873 specimens ranged between 10.6 and 28.2 cm TL and from 10.2 to 232.5 g total weight, were sampled. The age, growth, length-weight relationship, sex ratio, length and age at first sexual maturity and reproduction period were estimated. Total lengths of males ranged from 12.6 to 23.2 cm and of females from 11.8 to 28.2 cm. The maximum age observed was 4and 5 years for males and females respectively. Length-weight relationships for males and females were estimated as W = 0.0043*L3.2644 and W = 0.0042*L3.2651 , respectively indicating an allometric growth. Thevon Bertalanffy growth equations were Lt = 29.77(1-e0.274(t+1.36)) and Lt = =32.36(1-e-0.255(t+1.09)) for males and females respectively. The growth performance index value (&PhiL) was computed as 2.39 for males and 2.44 for females. Length at first sexual maturity was 15 cm (1.21 years) in males and 15.2 cm (1.40 years) in females. The male: femaleratio was 1:1.67. The Gonado-Somatic Index (GSI) values indicated that the spawning season starts from November to February with a peak in January for both sexes.
Key words: Alexandria, Chelidonichthys lucerna, gurnard, growth, reproduction, ,
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Cite this Reference:
Sabry, S. El-Serafy, Fahmy, I. El-Gammal, Sahar, F. Mehanna, Nasr-Allah, H. Abdel-Hamid and El-Sayed, F.E. Farrag, . Age, Growth and Reproduction of the Tub Gurnard, Chelidonichthys lucerna Chelidonichthys lucerna (Linnaeus, 1758) from the Egyptian Mediterranean waters off, Alexandria. International Journal of Fisheries and Aquatic Sciences, (1): 13-20.
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ISSN (Online): 2049-842X
ISSN (Print): 2049-8411 |
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