Study Of Abundance And Edible Parts (Bydd) Of The Sea Snail (Gastropods) In Mangrove Ecosystem At Lampu Satu Beach And Payum Beach, Merauke District

Abstract

Gastropoda  is  one  of  the  families  of  the  molluscum  phylum  found  in  abundant amounts. Its existence in the mangrove forest ecosystem of Merauke Regency brings potential in  developing  alternative  foodstuffs  from  the  sea  in  addition  to  other  fishery  protein  sources such as Fish and Shrimp. The study took place in two mangrove ecosystem locations at Lampu Satu Beach and Payum Beach using the line transect method with purposive sampling placed quadrants  successfully  identified  as  many  as  8  (eight)  gastropod  species  included  in  4  (four) families  namely  Littorinidae,  Potamididae,  Neritidae  and  Ellobiidae.  The  species  with  the highest  abundance  is  owned  by L.  Scabra at  44.03  ind/m2 with  a relative  density  of  87%  at Station I, while at station II is owned by species L. Scabra 20.83 ind/m2, T. sulcata 13.4 ind/m2 and C. obstusa 11.3 ind/m2. Furthermore, for Frequency of Attendance at Station I L.scabra at 100% and C. obstusa 67%, at Station II L. scabra and C. obstusa both at 97%. Based on the analysis of the shell length it is known that the species with the longest shell size are owned by the  species T.  telescopium 7  cm; T.  sulcata 6.21  cm  and T.  palustris 5.29  cm.  The  edible portion of gastropods can be seen from the weight of the meat to the total weight, so that the species with the highest percentage is known to Nerita sp. 43%, C. angulifera and N. lineata 35%, and L. scabra 34%.