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Supono, -
Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)
Earth & Planetary Sciences

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ECHINODERM FAUNA OF THE LEMBEH STRAIT, NORTH SULAWESI: INVENTORY AND DISTIBUTION REVIEW Supono, -; Lane, David J. W.; Susetiono, -
Marine Research in Indonesia Vol 39, No 2 (2014)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1006.073 KB) | DOI: 10.14203/mri.v39i2.85

Abstract

Indonesia is particularly rich in Echinoderms and North Sulawesi lies at the geographic centre of this biodiverse marine realm. While further studies on Sulawesi Echinodermata are required in order to obtain full understanding ofcurrent biodiversity status, preliminary SCUBA and intertidal surveys in early 2012 in the vicinity of the Lembeh Island, a region little explored previously, recorded a total of 76 species of 4 classes (Asteroidea, Ophiuroidea, Echinoidea and Holothuroidea) from shallow waters (0-40 m) at 36 sites (sea grass, coral rubble and reef). The class Crinoidea is not reported here. A review of Echinoderm literature for North Sulawesi noted that there are 114 species belonging to 5 classes of Echinodermata.
FISSIPAROUS SEA CUCUMBER (Holothuria atra) POPULATION IN NORTH LOMBOK, INDONESIA Indriana, Lisa Fajar; Firdaus, Muhammad; Supono, -; Soffa, Fawzan Bhakti
Marine Research in Indonesia Vol 43, No 1 (2018)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1439.406 KB) | DOI: 10.14203/mri.v43i1.242

Abstract

Sea cucumbers belonged to the species of Holothuria atra are one of the holothurians that could reproduce asexually through fission particularly when their ambient environments are not optimum to reproduce sexually. The reproductive pattern of H. atra has been shown to correlate with to the condition of H. atra population as well as their habitats and environments. This study aims to investigate the asexual reproduction and fission rate of H. atra in Tanjung, North Lombok, Indonesia. We conducted surveys in February, May, July, August, September and December 2016 by applying the free collection method. A total of 1,383 individual H. atra were collected consisting of 931 intact or normal individuals, 174 anterior individuals, 261 posterior individuals and 17 uncategorized individuals. Fissioned H. atra were found in every sampling conducted in the six different months with fission rates range from 5.53 to 30.40%. This research shows that the population of H. atra in Tanjung, North Lombok, are susceptible to asexual reproduction (fission). Fission rate value of > 5% is associated with an adaptation mechanism of H. atra to maintain their population in the wild. Further investigation on the environmental conditions stimulating H. atra fission is needed to understand the reproduction and population dynamic of this species in Tanjung waters.
FISSIPAROUS SEA CUCUMBER (Holothuria atra) POPULATION IN NORTH LOMBOK, INDONESIA Indriana, Lisa Fajar; Firdaus, Muhammad; Supono, -; Soffa, Fawzan Bhakti
Marine Research in Indonesia Vol 43 No 1 (2018)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1439.406 KB) | DOI: 10.14203/mri.v43i1.242

Abstract

Sea cucumbers belonged to the species of Holothuria atra are one of the holothurians that could reproduce asexually through fission particularly when their ambient environments are not optimum to reproduce sexually. The reproductive pattern of H. atra has been shown to correlate with to the condition of H. atra population as well as their habitats and environments. This study aims to investigate the asexual reproduction and fission rate of H. atra in Tanjung, North Lombok, Indonesia. We conducted surveys in February, May, July, August, September and December 2016 by applying the free collection method. A total of 1,383 individual H. atra were collected consisting of 931 intact or normal individuals, 174 anterior individuals, 261 posterior individuals and 17 uncategorized individuals. Fissioned H. atra were found in every sampling conducted in the six different months with fission rates range from 5.53 to 30.40%. This research shows that the population of H. atra in Tanjung, North Lombok, are susceptible to asexual reproduction (fission). Fission rate value of > 5% is associated with an adaptation mechanism of H. atra to maintain their population in the wild. Further investigation on the environmental conditions stimulating H. atra fission is needed to understand the reproduction and population dynamic of this species in Tanjung waters.
SITE SUITABILITY ANALYSIS FOR COMMUNITY-BASED TROPICAL SEA CUCUMBER HOLOTHURIA SCABRA GROW-OUT IN NORTH SULAWESI WATERS Rizqi, Marenda Pandu; Supono, -
Marine Research in Indonesia Vol 44 No 1 (2019)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/mri.v44i1.301

Abstract

North Sulawesi, a region that has experienced a decreasing population of commercial sea cucumbers in Indonesia, has recently been designated an aquaculture development area. Recent developments of sea cucumber Holothuria scabra hatchery technology have successfully enabled the small-scale enterprise to produce hatchery-reared sandfish for restocking purposes. However, the grow-out phase requires considerable resources including ex-situ grow-out sites, labor, and distribution. This study aims to investigate the suitability of some potential grow-out sites for juvenile H. scabra in North Sulawesi waters. Three traditional sea cucumber fishing grounds in coastal areas of North Minahasa regency in North Sulawesi, i.e., Tanjung Merah, Tasikoki and Makalisung, were examined to determine their suitability as a grow-out site. Several criteria encompassing bioecological (native sea cucumber population, seagrass bed population, competitor/predator), environmental (substrate, protection to weather, water quality, tidal cycle), and technical/support (access, safety, labor) were assessed in each site. Site suitability analysis using a multi-criteria decision-making tool, Analytical Hierarchy Process (AHP), shows that Tasikoki has the highest suitability score (48.94%) followed by Tanjung Merah (27.18%) and Makalisung (23.88%). Tasikoki scores higher than the two other sites in 7 out of 11 sub-criteria, including native sandfish population, seagrass species, substrate, weather protection, safety, and community support. Our finding suggests that Tasikoki is bioecologically, environmentally, and technically the best potential site to be developed for H. scabra juvenile grow-out.
Co-Authors DWI SURYANTO Lane, David J. W. Lisa Fajar Indriana Rizqi, Marenda Pandu Soffa, Fawzan Bhakti Susetiono, -