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NOTES ON THE TEREBRALIA PALUSTRIS (GRASTROPODA) FROM THE CORAL ISLANDS IN THE JAKARTA BAY AREA Soemodihardjo, Subagjo; Kastoro, Widiarsih
Marine Research in Indonesia Vol 18 (1977)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (753.359 KB) | DOI: 10.14203/mri.v18i0.367

Abstract

A dense population of Terebralia palustris occurs in many coral islands in the Jakarta Bay area, living usually in association with mangrove communities. A preliminary study on this gastropod has been carried out in two islands, Pulau Rambut and Pulau Burung, which concerned with population density and structure, length-weight relationship, rate of growth, and the effect of prolonged desiccation and starvation. Analyses were made on the properties of the substrate including soil component, organic matter content, pH, salinity, and daily temperature fluctuation at the soil's surface.No less than 130 specimens per square meter were counted in the most densely populated place in Pulau Rambut. The length frequency distribution showed a bimodal histogram, and the length-weight relationship was represented by the following equation: W = 0.00024 L2'5534 where : W = dry weight in gram; L = length in milimeter.A number of young individuals were confined in a fenced area for growth study. During the first four-month they gained an average additional length of 10 mm. Out of water and starved this gastropod may survive for three months.
NOTES ON THE MOLLUSCAN FAUNA OF PULAU PARI Soemodihardjo, Subagjo
BERITA BIOLOGI Vol 1, No 4 (1974)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v1i4.1444

Abstract

Among the soores of islands that make up "Pulau Seribu",Pulau Pari is ecologically interesting. It is composed of five small islands united by a common., distantly located, outer reef.Collectively they offer a long beach line easily within our reach.The vast intertidal area, the uneven bottom topography and the nature of the bottom, give rise to different kind of habitats from which we may expect different biotic populations.