Keanekaragaman Kepiting (Decapoda: Brachyura) di Pantai Papuma Kabupaten Jember dan Pemanfaatannya sebagai Poster

Abstract

Crabs are a group of animals members of the order Decapoda infraorder Brachyura which has a general characteristic in which the body is composed of a shell (carapace) and has five pairs of legs. Crabs love rocky, sandy, and muddy habitats. Papuma Beach is the result of a fault block that has a trend of movement towards the Northeast – Southwest and northwest-southeast, so that the substrate waters in the Southern Region of Java is rich in sand. Information about the diversity of crabs on this beach is still not available, so the study was conducted on the diversity of crabs. Sampling at Papuma Beach was carried out in January 2023. Sampling was carried out by road sampling and analysis the data using Shannon Wienner Diversity Index (H’). The results found 12 species of crabs, namely Pachygrapsus transversus, Ocypode kuhlii, Actaeodes tomentosus, Zosimus aeneus, Atergatis floridus, Percnon gibbesi, Calappa bilineata, Dorippe quadridens, Ocypode ceratophthalmus, Ocypode cordimana, Eriphia sebana, and Cataleptodius floridanus. Crab diversity using the diversity index (H’) (Shannon-Wienner) category is classified as medium with a value of 2.00. Measurements of abiotic factors on Papuma Beach include ideal for crab life. Salinity ranges from 31 ppt – 34 ppt, light intensity ranges from 1590 lux - 2970 lux, soil pH ranges from 6,5-7, and the type of substrate is rocky and sandy. These abiotic conditions can be said to be suitable for the life of crabs on Papuma Beach.