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Influence of salinity variations on the embryonic and early larval development of long-spined black sea urchin (Diadema Setosum)


Citation

Abdul Wahab, Mohammad Sarifudin and Rahman, Md. Aminur and Md Yusoff, Fatimah and Arshad, Aziz and Tan, Soon Guan (2017) Influence of salinity variations on the embryonic and early larval development of long-spined black sea urchin (Diadema Setosum). Journal of Animal and Plant Sciences, 27 (1). 316 - 324. ISSN 1018-7081

Abstract / Synopsis

Effects of salinity on fertilization, embryonic, and early larval development and growth performances of long-spined black sea urchin (Diademasetosum) were investigated in a controlled laboratory condition. The experiment was carried out with seven salinity treatments (22, 25, 28, 31, 34, 37 and 40ppt), each of which was triplicated. Significantly highest fertilization success was achieved at 31 ppt (97.33%), followed by those at 34, 37, 28, 25 and 40 ppt, and the lowest value at 22 ppt, decreased with increasing and decreasing salinities (P< 0.05).The time required to reach these embryonic and larval stages was increased with the salinity deviations from 31 followed by 34, 37 and 28 ppt. Survival (%) of the early larval stages (from prism to 4-arm pluteus) followed the same trends as fertilization rates. No significant differences (P> 0.05) were recognized among these four salinity levels on prism larval length and width. However, significant differences (P> 0.05) were noted in morphometric characteristics of 2-arm and 4-arm pluteus larvae. The finding of the study indicated that D.setosum is a stenohaline echinoid that could not be able to survive and develop if the salinity range is less than28 or more than 37 ppt.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Faculty of Biotechnology and Biomolecular Sciences
Institute of Bioscience
Publisher: Pakistan Agricultural Scientists Forum
Keywords: Sea urchin; Diademasetosum; Salinity; Embryo; Larvae; Development
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 18 Apr 2019 12:29
Last Modified: 18 Apr 2019 12:29
URI: http://psasir.upm.edu.my/id/eprint/62167
Statistic Details: View Download Statistic

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