The Biodiversity of Gastropods In Karapyak Rocky Shores, Pangandaran Region, West Java Province, Indonesia

Asep Sahidin (Fakultas Perikanan dan Kelauatan Universitas Padjadjaran)
Zahidah Zahidah (Department of Fisheries, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran)
Herman Hamdani (Department of Fisheries, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran)
Indah Riyantini (Department of Fisheries, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran)
Roni Sewiko (Department of Marine Technology, Pangandaran Marine and Fisheries Polytechnic)

Omni-Akuatika
Omni-Akuatika Special Issue 2nd Kripik SCiFiMaS

Pangandaran rocky shores have a unique ecosystem and a variant of invertebrate organisms such as mollusk from the gastropod class. This study aims to analyze the biodiversity of gastropods on the rocky shore of Karapyak beach. This research consists of 5 stations. The quadrant set by 1 m x 1 m vertically toward the sea. The result found 773 individuals scattered in nine families. The family of Neritidae dominated (43%), followed by family cyprinoids with 6.3%. Nerita plicata is a species found to dominate in every station with an average abundance (256 ± 10) and/m2. Using the Bray-Curtis cluster analysis, showed variations in the distribution and abundance of different gastropods vertically into the ocean and uniformly distributed horizontally to the shore. Substrate and tidal are the main variables in the spatial distribution of gastropods in the Karapyak beach.