Toha AHA, Sumitro SB, Hakim L, Widodo N, Binur R, Suhaemi, Anggoro AW. 2017. Review: Biology of the commercially used sea urchin Tripneustes gratilla (Linnaeus, 1758) (Echinoidea: Echinodermata). Ocean Life 1: 1-10. Tripneustes gratilla is a species of sea urchin in shallow tropical waters. The species is economically and commercially important, has ecological value, and prospects as a biological control agent. It is considered as the commercially traded sea urchin. Overexploitation has caused a sharp decline in T. gratilla populations. Understanding biological aspects of T. gratilla is critical to the sustainable use of this resource in the future.

No abstract

Binur R, Pancoro A. 2017. Inbreeding depression level of post-larvae freshwater prawn (Macrobrachium rosenbergii) from several hatcheries in Java, Indonesia. Biodiversitas 18: 609-618. Inbreeding accumulation will tend to reduce genetic variation or depressed of the prawn fry produced. This problem has caused a decrease in production and quality of prawns culture in Indonesia. The purpose of this study is to measure the level of inbreeding depression prawn fry generated from several hatcheries in Java by microsatellite markers. There is four microsatellite locus to be used i.e Prk9A/T1, Prk4G/T1, TGFP16, and Mr8-88. The amplification of fourth locus using PCR with 6-carboxy-fluorescine (6-FAM) label. The number of alleles (Na) from fourth locus is Mr8-88 (11 alleles), TGFP16 (10 alleles), Prk4G/T1 (9 alleles), dan Prk9A/T1 (5 alleles), respectively. The level of polymorphism locus from highest to lowest is locus Prk4G/T1 (0.703), Prk9A/T1 (0.507), TGFP16 (0.410), and Mr8-88 (0.370), respectively. Inbreeding depression level of postlarvae (PL) M. rosenbergii tend to moderate with BBI Ciamis (He 0.444), BBUG Samas (He 0.514), LRPTBPAT Sukamandi (He 0.519), and UPBL Probolinggo (He 0.530), respectively. AMOVA analysis showed about 8.0% genetic variation among populations. From these results, it can be concluded that the PL produced indicated have been depressed. Post-larvae prawns produced from fourth hatcheries is not recommended to be a broodstock but can be used for cultivation for farmers.

ABSTRAK Penelitian ini bertujuan untuk menambah data spesies dan kelimpahan ikan

<p><em>The research of the diversity and abundance of fish had been done at Tes Lake at the province of Bengkulu by using in-situ conservation. Observation and collecting of samples had been done in the mid of August to the mid of November 2002. Collecting of samples was done in 4 stations. There are 21 species of fish included 18 genera and 12 families which had been caught using gillnet (jaring insang), cast net (jala), fish pot (lukah/bubuh), fishline (pancing/tajur), and dip net (serok). Cyprinidae is the fish family which has most variety (8 species), while other families have only 2 and 1 species. The species of fish which had been caught were mostly river fish (freshwater fish). Based on the index of diversity (H’), the diversity of fish is medium between   0.78 – 1.27 with the highest diversity index is at station I (1.27) and the lowest is at station IV (0.78). The spread of fish based on uniformity index (E) is about 0.33 – 0.49 with the highest uniformity index is at station III (0.49) and the lowest is at station IV (0.33). The total abundance of fish which are collected during the research is 13,030 with the highest abundance is at station IV (4,643 fish) and the lowest is at station III (1,171 fish). Species of fish that are abundance and predominant are Puntius binotatus (C.V.) and Osteochilus hasseltii (C.V.) compared with others. The value of CPUE is 2.75 kg/trip with the highest value of CPUE is at station IV (4.6 kg/trip) and the lowest are at station II and III (1.7 kg/trip). The water quality of Tes Lake is still able to fishes living and fishery. The kinds of fish which are really valuable economically but  it’s extinction being threatened are Anguilla marmorata Benn. and Tor douronensis (C.V.)</em>.</p>