Reproductive Biology of Keeled Fish <i>Liza Carinata</i> (Valenciennes, 1836) from Suez Bay, Egypt

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 14.3 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.

Age, Growth and Mortality of Liza carinata Valenciennes, 1836 (Pisces: Mugilidae) in Bitter Lakes, Suez Canal, Egypt

“…The results of LWR of the previous studies are summarized in Table (1). The values of coefficient "b" obtained in this study are similar to that of Taskavak and Bilecenoglu (2001) in the Mediterranean Sea and Hakimelahi et al (2010) in Bersian Gulf and Hussain et al (2010) in Northern Arabian Sea as well as Hefny et al (2016) in Suez Bay and lastly lower than the values recorded by Mehanna (2004) in Bitter Lakes. The parameters of length-weight relationships may be affected by various factors, such as time of sampling, food availability, environmental conditions, differences in age, stage of maturity as well as sex (Mehanna et al, 2019).…”

The life history of the invasive mullet, Osteomugil engeli (Bleeker, 1858) in Hawaiian estuaries

“…Like M. cephalus, P. haematocheila is a larger bodied mullet (up to 667 mm TL) with an age and size at maturity estimated at 430 mm and 4-5 years for females and 375 mm and 2-4 years for males (Okumus and Bascinar 1997;Torcu and Mater 2000). L. carinata has a similar size range as O. engeli and similar size at maturity of 125 mm for male and 143 mm for females (Hefny et al 2016).…”

“…A native to the Indian Ocean, the keeled mullet Liza carinata colonized the South-eastern Mediterranean as a Lessepsian immigrant species (Roll et al 2007). This small-bodied mullet has limited fisheries value in its native range (Torcu and Mater 2000); however, along the Egyptian coast (Suez Bay) where this species is invasive, 18% of the total catch from 2002 to 2012 was comprised of L. carinata (Hefny et al 2016). Planiliza haematocheila (also known as Mugil so-iuy or Liza haematocheila), a valuable fisheries and aquaculture species throughout its native range of the western North Pacific and the Sea of Japan, was intentionally introduced to the Azov and Black Seas in the late 1970s and early1980s in efforts to improve aquaculture in the region (Okumuş and Başçinar 1997).…”

Stimulation of gonad maturation in mullet fish Mugil dussumieri using MT, E2, hCG, and Ovaprim hormone

“…Estradiol hormone level in the treatment and control increased from day 0 to day 60 with the highest increased in control. According to Hefny et al (2016) estradiol hormone level was 199 ± 87 pg/ml and 102 ± 16 pg/ml, Kumar et al (2015) 323 ± 13 pg/ml, Chang et al (1995) 547.3 ± 19.3 pg/ml, 533.1 ± 54.1 pg/ml and 1354.1 ± 297.0 pg/ml and Yelghi et al (2012) 1800-3600 pg/ ml. Increased estradiol hormone level result in stimulation of vitellogenesis which accelerates gonad development (Zahri et al 2018;Sinjai et al, 2014).…”

“…However, on day 0 testosterone hormone level in Ovaprim treatment was higher than hCG treatment and control, then on day 30 decreased and on day 60 increased again. According to Hefny et al (2016) testosterone hormone level was ranged from 29750 ± 4922 pg/ ml to 2690 ± 2807 pg/ml with the lowest 17400 ± 1054 pg/ml and the highest 30500 ± 2037 pg/ ml. According to Kumar et al (2015) 938 ± 7.87 pg/ml while according to Yelghi et al (2012) 11 pg/ml, 70 pg/ml and 370 pg/ml.…”