Effect of different temperature on growth of marine Acartia (calanoidae, copepoda

Subject Areas : Marine Biology

R.  Mosavi Nadoshan ¹ (Dept. of Fisheries, Faculty of Marine Science and Technology, Islamic Azad University Tehran North Branch)
S.  Golmirzai ² (Dept. of Fisheries, Islamic Azad University, Tehran Science and Research Branch)

Received: 2013-12-24 Accepted : 2014-07-03 Published : 2014-12-21

Keywords: Copepod, calanoide, Acartia sp, temperature treatments, special growth rate,

Abstract :

Calanoids among cultured copepods are a potential source of live food for marine fish larvae because of their pelagic forms, high frequency in nature, suitable size and high content of PUFA fatty acid levels. Therefore, given the importance of this zooplankton, in the present study the effect of different temperatures on growth and survival of Acartia at 3 treatments, 30° C , 25° C,  20 ° C and a constant salinity of 40 ppt during 21 days were investigated. At the end of study, the highest survival was reported at temperature treatment of 30 ° C, with egg relaying percent and development of 86.6 ± 11.54. The average survival of 5 Naupli stages, 5 copepodit stages and adult stage was %34. 3± 5.50, %23.1 ± 5.5and %15±6 and the highest growth rate obtained was %0.04 ± 0.02.