The Preference Size Of Male Mud Crab, Scylla tranquebarica at Success Mating With Female , Scylla olivacea in Controlled Tanks

Gunarto Gunarto, Sulaeman Sulaeman, Herlinah Herlinah

Abstract

Interspecific hybridization of mud crab Scylla spp has been successfully conducted in controlled tanks. However, there  is no information yet available about the male size  S. tranquebarica is capable to copulate with female of S. olivacea. The objectives of the experiment  is to find out  the  male size of   S. tranquebarica that willingly copulated with newly molted female of  S. olivacea.  Twelve  individual of adolescent female of S. olivacea were reared individually in the conical fibreglass tanks each of  400 L volume. In  another tank,  12 adult male  S. tranquebarica with various size (200-400g/ind.) were also prepared. The crabs fed with chopped trash fish  in the morning (7.00 am) and afternoon (17.00 pm) at 5% of the total crab biomass. Each newly molted female is  transfered to the copulation tank and three male of different size also stocked at the copulation tank, then wait until one of the three male do copulation with female new molt.  The size of copulated crabs (body weight, carapace with, and carapace length) were recorded.  The female crabs sizes were measured  before and after molting, whereas, the  male crab sizes were measured soon after mating process has finished.  Post mating, the female crab then reared individually in the tank until  spawned. The result  showed that male S.tranquebarica  of >300g individual weight are preferable to copulate with female S. olivacea, and contrary none of male crab with size <300g do succsess mating  The time period from mating until  gonad maturity stage IV for the S. olivacea in this study range between 59-103 days.

Keywords

Keywords : Scylla olivacea, Scylla tranquebarica, preferences, mating, mature gonade

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References

Beattie, C. L., Pitt, K. A., Connoly, R. M. 2012. Both size and gender of mud crabs influence the outcomes of interference interactions. Journal of Experimental Marine Biology and ecology 434-435:1-6.

Baiduri, S. N., Akmal, S. N and Ikhwanuddin, M., 2014 Mating success of hibrid trials between two mud crab species, Scylla tranquebarica and Scylla olivacea. Journal of Fisheries and Aquatic Science 9(2):85-91. DOI: 10.3923/jfas.2014.85.91

Churchill, G. J., 2003 An investigation into the captive spawning, egg characteristics and egg quality of the mud crab (Scylla serrata) in South Africa. Master Thesis in Rhodes University, South Afrika. 111 p.

Fatihah, S. N., Sylverter, C. S., Hasrul, H. H., Mucd-Farouk, H., Chen, C. A. 2018. Sperm viability and quantity of mud crab, Scylla tranquebarica in different cryoprotectants. AACL Bioflux 11(4): 1098-1106.

Gunarto and Sulaeman 2017 Rearing of mud crab, Scylla tranquebarica larvae with different stocking densities. Jurnal Omni Akuatika 13 (2):190-198. DOI: 10.20884/1.oa.2017.13.2.261.

Gunarto, Syafaat, M. N., and Herlinah. 2019. Larva Development and Growth of Mangrove Crab, Scylla tranquebarica Crablet from Individual Selection for the Broodstock Candidate. Aquacultura Indonesiana 20 (1): 24-31. DOI:http://aquasiana.org/index.php/ai/article/view/132

Gunarto, Sulaeman and Herlinah. 2019. Hybridization of Mud Crab, Scylla spp in Controlled Tanks. Research report of Research Institute for Coastal Aquaculture and Fisheries Extension, Maros. 10p.

Ikhwanuddin, M., Bachok, Z., Mohd Faizal, W. W. Y., Azmie, G and Abol Munafi, A. B. 2010. Size at maturity of mud crab Scylla olivacea (Herbst, 1796) from mangrove areas of Terengganu coastal waters. Journal of Sustainable Science and Management 5(2):134-147.

Ikhwanuddin, M., Azmie, G., Nahar, S. F., Wee, W., Azra, M. N., Abol Munafi, A. B. 2018. Testis maturation stages of mud crab (Scylla olivacea) broodstock on different diets. Sains Malaysiana 47(3): 427-432.

Islam, S., and Kurokura, H., 2012 male reproductive biology of mud crab Scylla olivacea in a tropical mangrove swamps. Journal of Fisheries and Aquatic Sciences 7(3):194-204. DOI:10.3923/jfas.2012.194.204

Syafaat, M. N and Gunarto, 2018 Growout culture of mud crab Scylla tranquebarica (Fabricius, 1798) from hatcheri in different pond location. Media Akuakultur 13 (1) : 21-30 (In Indonesia). http://dx.doi.org/10.15578/ma.13.1.2018.21-30.

Robertson, W. D. dan Kruger, A., 1994. Size at maturity, mating and spawning in the portunid crab Scylla serrata (Forskal) in Natal, South Africa. Estuarine, Coastal and Shelf Science, 39 : 185-200.

Waiho, K., Mustaqim, M., Fazhan, H., Norfaizza, W.I.W., Megat, F.H., & Ikhwanuddin, M., 2015 Mating behaviour of the orange mud crab, Scylla olivacea : The effect of sex ratio and stocking density on mating success. Aquaculture Reports, 2 (2015) 50-57. http://dx.doi.org/10.1016/j.aqrep.2015.08.004

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