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:: Volume 6, Issue 23 (Fall 2015) ::
joc 2015, 6(23): 49-54 Back to browse issues page
Study the Life Cycle of Acartia tonsa at Salinity and Water Temperature Treatments in the Southern Caspian Sea Water
Aboulghasem Roohi * , Reza Azari , Maryam Shapoori , Mahdi Naderi Jelodar
, roohi_ark@yahoo.com
Abstract:   (2735 Views)

The effects of salinity on density of A. tonsa at three salinity treatments include 9 ±1, 11 ±1 and 12 ±1 psu (Mean±SE) and two experimental water temperatures of 25 ±2 and 23 ±2oC were investigated in the present study. Treatments were examined with three replicates inside a 250 cc tanks over a two weeks period trials. Data showed animals grew to copepodites after two days. The first group of experiments with Acartia tonsa cultured at 23 ±2oC and 12 ± 1psu. The results of this study showed that about 24-39% of the animals grown and has completed in the tenth to twelfth days to copepodites and reached to sexual maturity. After 16 days, about 68% of the initial nauplii reached sexual maturity. The second group of experiments with Acartia tonsa cultured at 21 ±1oC and 11 ±1 psu. The results showed that after 15 days, nauplii grew to adult and also the adults have spawned within 15th days. The results of this research showed that the appropriate salinity and temperature for A. tonsa were 12 psu and 25oC, respectively.

Keywords: Zooplankton, Copepods, Acartia tonsa, Reproduction, Caspian Sea.
Full-Text [PDF 123 kb]   (680 Downloads)    
Type of Study: Research |
Accepted: 2016/01/31 | ePublished: 2016/01/31
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Roohi A, Azari R, Shapoori M, Naderi Jelodar M. Study the Life Cycle of Acartia tonsa at Salinity and Water Temperature Treatments in the Southern Caspian Sea Water. joc. 2015; 6 (23) :49-54
URL: http://joc.inio.ac.ir/article-1-849-en.html


Volume 6, Issue 23 (Fall 2015) Back to browse issues page
نشریه علمی پژوهشی اقیانوس شناسی Journal of Oceanography
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