Biomassa Sesaat Sumber Daya Perikanan Undur-undur Laut (Crustacea: Decapoda: Hippidae) Di Pantai Berpasir Cilacap Dan Kebumen, Jawa Tengah

Mole crab is a benthic animal that live buried in sandy beach in the intertidal area. Mole crab has an important ecological role and also has economic value. The sandy beach in south of Cilacap and Kebumen is mole crab's habitat. Mole crab exploitation in these areas has been increasing for consumption demand. To determine the significant role of the mole crab in the provision of nutritious food, it is necessary to estimate the potential of mole crab biomass. This study aims to determine standing biomass of the mole crab in Kebumen and Cilacap sandy beaches. The specimen collection was conducted by sampling methods every month in March 2012 to February 2013 on Bocor beach, Kebumen and June 2013 to May 2014 on Bunton beach, Cilacap. The data processing was conducted by descriptive statistics methods. The results showed that standing biomass of mole crab family Hippidae, namely Emerita emeritus and Hippa adactyla, fluctuated between 102 and 508 kg on the Kebumen sandy beach, and between 1,811 and 4,671 kg on the Cilacap sandy beach. Standing biomass of E. emeritus fluctuated between 82 and 497 kg on the Kebumen sandy beach and between 1,462 and 3,560 kg on the Cilacap sandy beach.Standing biomass of H. adactyla fluctuated between 2 and 133 kg on the Kebumen sandy beach, and between 234 and 1,701 kg on the Cilacap sandy beach. The difference in standing biomass in each location was caused by the difference of sampling time and environment condition of research area. The economic value potential of the mole crab as fishery resources is discussed