Growth and Survival of Juvenile Giant Clam Tridacna squamosa as a Function of Density
Main Article Content
Abstract
Juvenile Tridacna squamosa (less than 1 cm shell length) were placed in concrete trays in a coral habitat at the Marine Station of Hasanuddin University, Barang Lompo Island, South Sulawesi, Indonesia. A nylon net was used to protect against predators. The clams were stocked at 3 densities: 1000, 500, and 250 ind. m-2. Growth and survival were monitored in triplicate experiments. Growth was negatively correlated with density and significant differences were found between densities of 1000 and 250 ind m-2. After three months at the lowest density the mean shell length increment was 9 mm. There was no significant relation between density and survival rate.
Downloads
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
References
Cohen, I., Dubinsky, Z., Erez, J. (2016). Light enhanced calcification in hermatypic corals: New insights from light spectral responses. Frontiers in Marine Science, 2:1–12. https://doi.org/10.3389/fmars.2015.00122
Frias-Torres, S. (2017). Captive bred, adult giant clams survive restoration in the wild in Seychelles, Indian Ocean. Frontiers in Marine Science, 4:1–12. https://doi.org/10.3389/fmars.2017.00097
Han, L., Todd, P. A., Chou, L. M., Bing, Y. Von, Sivaloganathan, B. (2008). The defensive role of scutes in juvenile fluted giant clams (Tridacna squamosa). Journal of Experimental Marine Biology and Ecology, 359:77–83. https://doi.org/10.1016/j.jembe.2008.02.021
Harahap, S. A., Yanuar, Y., Ilham, Y. (2018). Diversity and abundance of giant clams in Anambas Islands, Indonesia. E3S Web of Conferences, 47:1–9. https://doi.org/10.1051/e3sconf/20184703005
Hernawan, U. E. (2008). REVIEW: Research Ethnobotany in Indonesia and the Future Perspectives. Biodiversitas Journal of Biological Diversity, 9(1):53–58. https://doi.org/10.13057/biodiv/d090113
Ip, Y. K., Koh, C. Z. Y., Hiong, K. C., Choo, C. Y. L., Boo, M. V., Wong, W. P., Neo, M. L., Chew, S. F. (2017). Carbonic anhydrase 2-like in the giant clam, tridacna squamosa: Characterization, localization, response to light, and possible role in the transport of inorganic carbon from the host to its symbionts. Physiological Reports, 5(23):1–15. https://doi.org/10.14814/phy2.13494
Lebata-Ramos, M. J. H. L., Okuzawa, K., Maliao, R. J., Abrogueña, J. B. R., Dimzon, M. D. N., Doyola-Solis, E. F. C., Dacles, T. U. (2010). Growth and survival of hatchery-bred giant clams (Tridacna gigas) in an ocean nursery in Sagay Marine Reserve, Philippines. Aquaculture International, 18(1):19–33. https://doi.org/10.1007/s10499-009-9272-4
Mies, M., Braga, F., Scozzafave, M. S., de Lemos, D. E. L., Sumida, P. Y. G. (2012). Early development, survival and growth rates of the giant clam Tridacna crocea (Bivalvia: Tridacnidae). Brazilian Journal of Oceanography, 60(2):127–133. https://doi.org/10.1590/S1679-87592012000200003
Neo, M. L., Erftemeijer, P. L. A., van Beek, J. K. L., van Maren, D. S., Te, S. L. M., Todd, P. A. (2013). Recruitment Constraints in Singapore’s Fluted Giant Clam (Tridacna squamosa) Populations - A Dispersal Model Approach. PLoS ONE, 8(3):1–12. https://doi.org/10.1371/journal.pone.0058819
Singh, K., Azam, K. (2013). Comparative Study of Available Spawning Methods of the Giant Clam Tridacna squamosa [ Bivalvia : Tridacnidae ] in Makogai , Fiji. World Journal of Fish and Marine Sciences, 5(3):353–357. https://doi.org/10.5829/idosi.wjfms.2013.05.03.72164
Van Wynsberge, S., Andréfouët, S., Gaertner-Mazouni, N., Wabnitz, C. C. C., Menoud, M., Le Moullac, G., Levy, P., Gilbert, A., Remoissenet, G. (2017). Growth, survival and reproduction of the giant clam tridacna maxima (Röding 1798, Bivalvia) in two contrasting lagoons in French Polynesia. PLoS ONE, 12(1):1–20. https://doi.org/10.1371/journal.pone.0170565