International Journal of Aquaculture, 2016, Vol.6, No.5, 1
-
14
1
Research Article Open Access
Reproductive Biology of Keeled Fish
Liza carinata
(Valenciennes, 1836) from
Suez Bay, Egypt
Amira Salah El-Din Hefny
1
, Osama Ahmad Abass
2
, Magdy M. El-halfawy
1
, Mohamed A. Abu El-Regal
3
, Amal M. Ramadan
1
1 Fish reproduction and breeding Lab., Aquaculture Division, National Institute of Oceanography and Fisheries, Suez, Egypt
2 Zoology Department, Faculty of Science, Port Said University, Port Said, Egypt
3 Marine Science Department, Faculty of Science, Port Said University, Port Said, Egypt
Corresponding author Email
International Journal of Aquaculture, 2016, Vol. 6, No.5 doi
Received: 22 Mar., 2016
Accepted: 12 May, 2016
Published: 7 Nov., 2016
Copyright © 2016
Hefny et al., This is an open access article published under the terms of the Creative Commons Attribution License, which permits
unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article
:
Hefny A.S E., Abass O.A., Elhalfawy M.M., El-Regal M.A.A., and Ramadan A.M., 2016, Reproductive Biology of Keeled Fish
Liza carinata
(Valenciennes,
1836) from Suez Bay, Egypt, International Journal of Aquaculture, 6(5): 1-14 (doi
Abstract
To study the reproductive biology of
liza carinata,
living samples of this species were collected during the period from
November 2012 to October 2013 in Suez Bay. The length weight relationship for female and male was almost strong, but female
shows more strong relationship than male. The relation of female was W= 0.012L
2.946
(R =0.8745) and for male was W = 0.034L
2.569
(R= 0.8024 which indicate that females of
L. carinata
were
isometric growth but males were allometric growth. The minimum and
maximum length was recorded for all individuals were (10.5-18.2 cm). Reproductive characteristics of
Liza carinata
showed that the
male reaches first sexual maturity smaller than the female at a total body length of 12.5 cm and 13.4 cm, respectively. Overall sex
ratio is 1: 0.97 for males to females. Estimation of GSI and HSI was carried out during the period of collection to determine the
spawning behaviour of
L. carinata
. The gonado-somatic index of males was lower than that of females. Where, the maximum GSI
values were recorded in December 8.883 % and 5.788 % for females and males, respectively. The maximum condition factor (K)
values was (1.23) in September and (1.21) in August for female and male, respectively. The maturity stages of male and female
Liza
carinata
are morphologically separated according to the changes in shape, size and colour of the gonad in different successive stages.
These stages are immature, immature & recovering, developing, maturing, mature, spawning and spent stages. The absolute
fecundity of the present species ranged from 24500 to 115258 eggs for fishes in the size ranging from 14 to 18.3 cm in total length.
Different points of view which take place in this work show that of the spawning season of
Liza arinata
in Suez which may be
extending from November to March for females and males.
Keywords
Liza carinata
; Length-weight; Reproductive biology; Suez Bay
1 Introduction
Family Mugilidae is widely spread and representing an important species for cultivation in fish farms. Mugil
species, commonly known as mullets, are pelagic-coastal fishes worldwide distributed.
Liza carinata
commonly
inhabit tropical and warm-temperate estuaries (McDowall, 1988; Blaber, 1997; Pombo et al., 2005). Laffaille et al.,
1998; Laffaille et al., 2002; Torras et al., 2000; Cardona, 2001; and Almeida, 2003 indicated that mugilidae play a
crucial ecological role where this fish community appears to be particulate organic matter transporter and could
play a significant role in the global energy budgets of environment. This fish are valuable food sources and
ecologically important as primary consumer at coastal and estuarine food chains, and also very representative
species for rearing in fish farms (El-Halfawy, 2004; Katsugawa et al., 2006). In spite of the importance of mullets
to fishery resources in the Suez Bay, no management policies have been established to protect this valuable
resource in the Bay.
L. carinata
represented about 18% of the total catch of the Suez Bay during the last ten years
(2002 - 2012) (GAFRD, 2012).
Some biological aspects of the species of this family were studied in Suez Bay and Bitter Lakes and different
regions such as (Hotos et al., 2000; Ilkyaz et al., 2006; Lawson et al., 2010; El-Ganainy et al., 2014).
The aim of this work was to study certain biological parameters of
L. carinata
in the Suez Bay in order to improve
current knowledge of the species for the purpose of rational use of resources and in order to compare these results
