Echinodermata, Holothuria Atra, in an Intertidal Seagrass Bed Off the Bama Beach, Baluran National Park, East Java, Indonesia

The occurrence of sea cucumber, Holothuria atra, was assessed in the seagrass area of the Bama beach, Baluran National Park in East Java. The study investigated the frequency and early stages of seagrass association preference of H. atra. Survey was conducted in May 2011 using belt transect (1m x 100m with three replicates). Frequency of H. atra and their association with seagrass were recorded. Furthermore, length and wet weight of each individual of H. atra were measured. The total of 146 individuals of H. atra were observed in which 37.67% associated with Enhalus acoroides (EA), 23.29% associated with Cymodocea rotundata (CR), 23,29% associated with mixed seagrass species of E. acoroides and C. rotundata, and 15.75% associated with no seagrass habitats. The results suggested that small size H. atra might prefer to live under the taller seagrass stands such E. acoroides, which could be morphologically benefits the H. atra by providing better protection and shelter area

The littoral sea cucumbers (Echinodermata: Holothuroidea) of Guam re-assessed – a diversity curve that still does not asymptote

The Micronesian island of Guam has been an important site for the study of littoral tropical holothurian taxonomy for almost 200 years. Despite substantial attention by both expeditions and resident taxonomists, new records are still regularly added to the fauna, demonstrating the challenge of documenting even such large and well-known animals in a small hyper-diverse area. Guam is the type locality of species described by Quoy & Gaimard (1833) and Brandt (1835). A survey of the sea cucumber fauna by Rowe & Doty (1977) led to one of the most used guides for the identification of tropical Pacific sea cucumbers because of the color illustrations of living animals it presented. Focus on echinoderms including holothurians continued with numerous new records added in the following decades. Paulay (2003a) summarized the fauna last, recording 46-47 species. At this stage the fauna was thought to be well documented. A week-long workshop on holothurian systematics sponsored by the National Science Foundation PEET (Partnerships for Enhancing Expertise in Taxonomy) project in 2010 included a substantial field work component, sampling both during the day and night, with snorkeling and SCUBA, across a variety of habitats. This survey yielded 40 species, including numerous new records and even species. Further sampling by Kerr’s lab since the workshop has added additional records. The littoral holothuroid fauna of Guam now comprises 65 species in 17 genera and 7 families. Half of the 19 newly recorded species are the result of unravelling cryptic species in complexes, the other half are based on new collections. Eleven species are known from single specimens, suggesting that much still remains to be learned about the fauna

Sinopsis teripang indonesia : dulu, sekarang dan yang akan datang

Synoptic of indonesian trepang is rarely published in national or internasional journals. this review would like to inform about trepang fisheries in indonesia, the cronologies of its fisheries history, termonology of origin, up to date-fisheries and future snapshot possibility. the fishery of indonesian trepang is belived has been done since more than 4 centuries ago

Archaster typicus (asteroidea,echinodermata):sistematika,pergeseran habitat,perilaku membenamkan diri dan perkawinan

Archaster typicus (asteroidea,echinodermata):systematics,habitat shifting,burrowing behavior and mating behavior. archaster typicusis is one of the target sea star for the ornamental trade in many locations in indonesia. the trading of this sea star is not only traditionally in the gift shop at tourism area but also in the online shop. the ecological impact related to the high exploitation of this species in indonesia has not much been examined. this review informs about the biological and ecological aspect of archaster typicus, including systematics,habitat shifing,burrowing behavior and mating behaviour. thus information expected to deliver a basic knowledge to the society,academicians,researchers who intend to examine the ecological role of this species and also as basic information for the future conservation management

THE FIRST RECORD OF Holothuria (Semperothuria) Roseomaculata KERR, 2013 (Echinodermata: Holothuroidea) IN INDONESIA

This paper documents the first record of Holothuria (Semperothuria) roseomaculata Kerr, 2013 (Echinodermata: Holothuroidea) from Indonesia. A freshly salted specimen was collected from fishers in Sumbawa, West Nusa Tenggara, Indonesia. This species was previously recorded from Yap and Chuuk States in the Federated States of Micronesia, Papua New Guinea, Palau, Okinawa-Japan, Sabah, Borneo-Malaysia, Solomon Islands, Vanuatu and New Caledonia. Reference material has been deposited in the Reference Collection of the Research Center for Oceanography, Indonesian Institute of Sciences in Jakarta, Indonesia.

Significant differences in invertebrate assemblages between low- and high-uplifted intertidal shores in the Simeulue Island, Indonesia, after a megathrust earthquake of 2004 and 2005

Co-seismic uplift provides significant effects on rocky intertidal assemblages. However, previous studies mainly focused on analysing invertebrate assemblages before and after the uplift event and are conducted in the Pacific Ocean region. The present study evaluated differences in invertebrate assemblages (i.e. species richness, species density, abundance, and composition) between low-uplifted (the uplift of ≤ 75 cm) and high-uplifted (the uplift of > 75 cm) intertidal shores in the Simeulue Island, Indonesia, after a megathrust earthquake of Indian Ocean in 2004 and 2005. The proportion of sediment types (i.e. clay, silt, sand, and gravel) was also analysed to determine their relationships to these assemblages. Invertebrate assemblages on high-uplifted intertidal shores showed lower species richness, higher abundance, and different composi- tions compared to those on low-uplifted intertidal shores. High-uplifted intertidal shores were dominated by Clypeomorus bifasciata (G.B. Sowerby II, 1855) (a cerithiid gastropod), while low-uplifted intertidal shores were dominated by Calcinus sp. (a hermit crab). Invertebrate assemblages were not significantly influenced by the proportion of most sediment types. These results indicate that co-seismic uplift should be considered in the management of rocky intertidal shores, especially those in the geologically active area