Hydrological Factors and Handling Effects on Fingerling Survival and Vitality of three Marine Fish Species

International Journal of Agriculture & Environmental Science
© 2019 by SSRG - IJAES Journal
Volume 6 Issue 1
Year of Publication : 2019
Authors : Nour S. Albahri, Amir A. Ibrahim, Mouina M. Badran
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How to Cite?

Nour S. Albahri, Amir A. Ibrahim, Mouina M. Badran, "Hydrological Factors and Handling Effects on Fingerling Survival and Vitality of three Marine Fish Species," SSRG International Journal of Agriculture & Environmental Science, vol. 6,  no. 1, pp. 18-23, 2019. Crossref, https://doi.org/10.14445/23942568/IJAES-V6I1P103

Abstract:

This research deals with the effect of temperature, dissolved oxygen concentration, transportation period and oxygen injection on fingerlings vitality of some cultured marine fish species. Fingerlings were collected from shallow waters of three locations of Syrian coast during the period Mar. - November 2016. Fingerlings were transported in plastic containers and bags, and housed in aerated polyethylene tanks, then monitored for two weeks. The results have shown that Liza aurata fingerlings taken from the two areas (Wadi Kandil: 75 minutes and Al Kabir Alshimali river: 40 minutes) were more tolerant to handling, transportation and farming conditions than Lithognathus mormyrus and Siganus rivulatus fingerlings. Fingerlings of Siganus rivulatus caught from the laboratory nearby area (High Institute of Marine Research) had low mortality rate in the tanks, and those of Lithognathus mormyrus and Liza aurata did not show any death. During transportation, the mortality rate was low at 19.5-28.5 ºC water temperatures and 3.3- 4.6 mg/l dissolved oxygen. However, at 28.6-31.9 °C water temperatures (with dissolved oxygen of 2.1mg/l) fish's survival and activity were negatively affected, causing high mortality. Injecting oxygen in the transporting bags kept the oxygen concentration level at 7.5 mgl, which ceased fingerlings mortality.

Keywords:

 Fish transportation, Fingerlings survival, Temperature effect, Dissolved oxygen effect, Syrian marine water

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