| Penulis | Artikel | Abstrak |
|---|---|---|
| D.E. Djoko Setyono | REPRODUCTIVE ASPECTS OF THE TROPICAL ABALONE, HALIOTIS ASININA, FROM SOUTHERN LOMBOK WATERS, INDONESIA | The main objective of this study was to determine reproductive strategy including major spawning season of tropical abalone (Haliotis asinina) from southern Lombok waters, Indonesia. Gonad bulk index, maturity stages and oocyte size frequency distribution were applied to document gonadal development and major spawning season. The results of this study show that H. asinina in southern Lombok waters displayed year-round spawning with a high proportion occurring in August - November, when gonad index dropped to a lower level and high proportion of partly spawned and/or spent ovaries occurred in the population. Gonad development and spawning in males and females occurred synchronously. The correlation between gonadal development and environmental factors are described and discussed. |
| Zainal Arifin and Dwi Hindarti | EFFECTS OF CYANIDE ON ORNAMENTAL CORAL FISH (CHROMIS VIRIDIS) | The use of cyanide particularly for fishing has caused concern for its impacts on aquatic marine life. This study was the first attempt to provide information on the effect of cyanide on tropical marine fish in Indonesia and aimed to determine the toxicity of cyanide to coral fish, Chromis viridis. The fish were exposed to 10, 18, 32, 56 and 100 ƒÝg l-1 of cyanide. These five cyanide concentrations were tested for 96-h period of exposure through a static-renewal. Cyanide was found to be very toxic to the fish. The 96-h LC50 of cyanide for juvenile of Chromis viridis was 41.3 ƒÝg l-1. The toxicity of cyanide to C. viridis was 300 times stronger than that of the trace metal cadmium. Compared to milkfish fry (Chanos chanos), C. viridis was more sensitive to cyanide. It is estimated that at concentration of 32 ƒÝg l-1cyanide does not show observable effect (NOEC) to C. viridis. Meanwhile the lowest observable effect of cyanide (LOEC) to the fish is at a concentration of 56 ƒÝg l-1. |
| Ade R. Yuliantri, Willem Moka, Jamaluddin Jompa,Magdalena Litaay | THE SUCCESSFUL TRANSPLANTATION OF ACROPORA MICROPHTHALMA AT BARRANG LOMPO REEF EDGE, SOUTH SULAWESI | Research on transplantation of Acropora microphthalma was conducted at Barrang Lompo Island reef edge of South Sulawesi from September to December 2002. The aim of this research was to know the successful rate of several coral transplantation methods for rehabilitation of coral reefs, covering the survival and growth rates. The methods used were framework earthenware (FE), iron stake (IS), dead coral tying (DCT), where the mother colony (MC) was used as control. These transplantation techniques were applied at five meter depth in two stations, north and south sites of the island. The survival rate for each method FE, IS, DCT and MC at the northern station was 85.71; 42.86; 85.71; 57.14while for southern station was 85.71; 85.71; 71.43 and 85.71respectively. The growth rates observed for each method at the first station were 2.18; 2.02; 1.40; 1.05 cm, and for the second station were 2.56; 2.21; 1.61; 1.04 cm, respectively. |
| T. Murniasih and K. Adachi | THE ANTI-PYRICULARIA ORYZAE PEPTIDES DERIVED FROM FUNGUS ISOLATED FROM MARINE SPONGE | The anti-Pyricularia oryzae compounds leucinostatins A, B, C, D, H, K were obtained from fungal strain HJK-3.2 derived from a marine sponge by the chromatographic separation. Chemical structural determination of these compounds were carried out by Liquid Chromatography-Mass Spectroscopy (LC-MS) and Nuclear Magnetic Resonance (NMR) analysis. These antibiotic peptides were strongly inhibiting the hyphal growth of rice plant pathogenic fungus, Pyricularia oryzae. |
| D.G.R. Wiadnya, P.J. Mous, R. Djohani, M.V. Erdmann, A. Halim, M. Knight, L. Pet-Soede, and J.S. Pet | MARINE CAPTURE FISHERIES POLICY FORMULATION AND THE ROLE OF MARINE PROTECTED AREAS AS TOOL FOR FISHERIES MANAGEMENT IN INDONESIA | The FAO Code of Conduct for Responsible Fisheries states that conservation and management decisions for fisheries should be based on the best scientific evidence available. Studies show that most of Indonesia¡¦s capture fisheries are either full or over-exploited. However, the fishery sector is still expected to contribute to the increase of Indonesia¡¦s GNP through an increase in total catches. Furthermore, the current practice of using catch-effort data and Maximum Sustainable Yield models to inform Indonesia¡¦s fisheries policies is flawed, putting sustainability and long-term profitability of Indonesia¡¦s fisheries at risk. In this paper, the authors argue that to ensure the survival of Indonesia¡¦s fish stocks and fisheries: fisheries policy must shift from development-oriented management towards management for sustainability. Furthermore, fisheries managers must accept that ¡¥untapped resources¡¦ may not exist or cannot be exploited profitably, and that any transfer of fishing effort between fishing grounds may contribute to collapse of local fisheries. Also, fisheries managers should change the management paradigm from MSY models to eco-system based management, wherein Marine Protected Areas should play an important role. Keywords: capture fisheries, Indonesia, management, over-exploitation, policy |
| Pradina Purwati | REPRODUCTIVE PATTERNS OF HOLOTHURIA SCABRA (ECHINODERMATA: HOLOTHUROIDEA) IN INDONESIAN WATERS | During 1993 to 1996, reproductive aspects of Holothuria scabra, one of the commercially important holothurian species in Indonesian waters were studied, which involved populations of Ambon Bay (eastern Indonesian waters), Saugi Island (central Indonesian waters) and Lampung Bay (western Indonesian waters). Those studies were reviewed in this paper, not only to reveal general patterns of reproductive seasons of populations throughout Indonesian waters, but also to provide more knowledge on gonadal-tubule-development that has been rarely investigated on Indonesian holothurians. The review showed that the development of gonadal tubules amongst populations of Indonesian H.scabra were similar. Those included that: tubules across a gonad grew for one single reproductive cycle, and each tubule had equal opportunity to release their gametes in the same spawning event. These features conformed to general characteristics of this species throughout the world, and were different from the proposed tubule recruitment model of Smiley (1988). Each observed population showed fluctuation on gonad index, and individuals with fecund and/or post spawning gonads were recorded in most sampling occasions, resulting in fluctuation of gonad index. This attribute gave clue to through-year spawning activity with more intense during one or two periods in a year. |
Penulis : D.E. Djoko Setyono, Zainal Arifin, Dwi Hindarti, Ade R. Yuliantri, Willem Moka, Jamaluddin Jompa, Magdalena Litaay, T. Murniasih, K. Adachi, D.G.R. Wiadnya, P.J. Mous, R. Djohani, M.V. Erdmann, A. Halim, M. Knight, L. Pet-Soede, J.S. Pet, Pradina Purwati
Dewan redaksi : Zainal Arifin, Augy Syahailatua, Anugerah nontji, Subagjo Soemodiharjo, Abdul Ganie Ilahude
ISSN : 0079-0435
Tahun Penerbitan : 2006
Penerbit : LIPI PRESS
