Agus Alim Hakim, Agus Alim
Sekolah Pascasarjana, P.S. Pengelolaan Sumber Daya Pesisir dan Lautan, IPB, Bogor.

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SPECIES COMPOSITION OF FRESHWATER EELS (Anguilla spp.) IN EIGHT RIVERS FLOWING TO PALABUHANRATU BAY, SUKABUMI, INDONESIA Hakim, Agus Alim; Kamal, M Mukhlis; Butet, Nurlisa A; Affandi, Ridwan
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 7, No 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Jurnal Ilmu dan Teknologi Kelautan Tropis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB)

Abstract

Freshwater eel (Anguilla spp.) is a catadromus fish that migrates from freshwater into seawater for spawning and return to freshwater during larvae stage to grow. The objective of this study was to determine species composition of tropical freshwater eels based on morphology collected from several rivers flowing in to the Palabuhan Ratu Bay. Young, adult, and glass eels were caught in August 2014 until Desember 2014. Glass eels were only caught in Cimandiri River. Freshwater eels were classified by ano-dorsal length (AD) divided by total length (TL), cluster analysis, and discriminant analysis based on morphometric data. The results showed different AD/TL of young and adult, i.e., 1.93±0.51 for A. bicolor bicolor, and 16.99±0.65 for A. marmorata, and three different AD/TL of glass eels i.e.,1.72±1.05 for A. bicolor bicolor6.60±1.79 for A. nebulosa nebulosa, and 15.07±1.04 for A. marmorata. Cluster analysis showed three groups of population  characters of young and adult eels i.e.  A. bicolor bicolor (2 groups) and A. marmorata (1 group). Discriminant analysis showed three groups of glass eels population i.e., A. bicolor bicolor, A. nebulosa nebulosa, and A. marmorata. Morphological identification showed that young and adult eels in Cibareno  and Citepus rivers had two species i.e., A. bicolor bicolor and A. marmorata. Glass eels from Cimandiri river had three species i.e., A. bicolorbicolor, A. nebulosanebulosa, and A. marmorata. A. bicolor bicolor was found in each rivers and as a dominant species in Palabuhan Ratu Bay.Keywords: A. bicolor bicolor, A. marmorata, A. nebulosa nebulosa, species composition
Burrowing Time of the Three Indonesian Hippoid Crabs After Artificial Dislodgment Wardiatno, Yusli; Qonita, Yuyun; Hakim, Agus Alim
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 3 (2016): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.324 KB) | DOI: 10.14710/ik.ijms.21.3.135-142

Abstract

Three species of hippoid crabs are the target species of intertidal fishery along coastal line in District Cilacap, south Java; namely Emerita emeritus, Hippa adactyla and Albunea symmista. In Adipala sandy beach, Cilacap  an experiment was conducted to reveal the burrowing time and velocity of the crabs. The experiment was performed by removing the crabs from their burrows, measuring their carapace length, and releasing them immediately on the substrate. Burrowing time was measured from the start of burrowing to the disappearance of the entire carapace under the sediment surface. Among the three species, E. emeritus had the fastest burrowing time. As a consequence in terms of velocity, the burrowing velocity of Albunea symmista was higher than that of Hippa adactyla and Emerita emeritus; meaning that with the same size A. symmista needs longer time to burrow. By evaluating with other previous studies, the burrowing time and burrowing velocity of the three sand crabs were comparable. The ability of fast burrowing in the three species seems likely to be the advantage for their survival in large wave disturbed coarse sandy habitat and for their ability to widely exist along the sandy coast of south Java. Keywords: behavior; Indian ocean; intertidal; sand crab; south Java; swash zone
Two Newly Recorded Species of the Lobster Family Scyllaridae (Thenus indicus and Scyllarides haanii) From South of Java, Indonesia Wardiatno, Yusli; Hakim, Agus Alim; Mashar, Ali; Butet, Nurlisa Alias; Adrianto, Luky
HAYATI Journal of Biosciences Vol 23, No 3 (2016): July 2016
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1284.902 KB) | DOI: 10.4308/hjb.23.3.101

Abstract

Two species of slipper lobster, Thenus indicus Leach, 1815, and Scyllarides haanii De Haan, 1841, are reported for the first time from the coastal waters of South of Java, part of the Indian Ocean. A total of two specimens, one specimen of T. indicus from Palabuhanratu Bay and one specimen of S. haanii from Yogyakarta coastal waters, were collected in April and September 2015, respectively. Descriptions and illustrations of the morphological characteristics of the two species and their habitat are presented.
KANDUNGAN LOGAM BERAT Pb UNDUR-UNDUR LAUT DAN IMPLIKASINYA PADA KESEHATAN MANUSIA Beru Ketaren, Cyrum Barnike; Hakim, Agus Alim; Fahrudin, Achmad; Wardiyatno, Yusli
Jurnal Biologi Tropis Jurnal Biologi Tropis Vol.19 No.1 Januari-Juni 2019
Publisher : Program Studi Pendidikan Biologi FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (446.047 KB) | DOI: 10.29303/jbt.v19i1.1066

Abstract

Abstract: The mole crab (Hippidae) is a filter feeder organism from crustacean that inhabits in sandy coastal areas. Due to its nature, this organism is able to accumulate heavy metals in a large amount. The concentration of heavy metals in this organism will increase in line with the polluting condition of its habitat. Heavy metals which exceed the standard in the organism body will be implicated to the human health who consumes the organism. The sandy crabs are found in large amount in Widara Payung coastline, Cilacap Regency. They are captured by the locals for meals. The heavy metal content such as Lead in the organism body never been investigated in this area previously. This research aimed to estimate the health risk of people who consume the sandy crabs in the area of Widara Payung, Cilacap Regency. This research was conducted on April to May 2018 and a location of sampling was determined purposively. Samples consisted of three types namely sandy crab body, sediment, and seawater. Each sample was preserved in an ice box and then transported to Aquatic Productivity and Environment Laboratory in Bogor Agricultural Univeristy for heavy metal analyzing. Results of this research exhibited that the average of Lead content in the water, sediment, and body of the sandy crab were 0.007 mg/l, 43.43 mg/kg, 0,97 mg/kg, respectively. The Lead content in the crab body the standard issued by the government of Indonesia through the BPOM, namely 0.20 mg/kg. Regular monitoring of Pb concentration in the mole crab and its habitat is suggested.  Keywords: consumption, Emerita emeritus, Hippidae, intertidal, pollution  Abstrak: Undur-undur laut (Hippopidae) adalah crustacea filter feeder yang hidup di daerah pantai intertidal berpasir. Karena sifatnya, organisme ini mampu mengakumulasi logam berat dalam jumlah besar. Konsentrasi logam berat dalam organisme ini akan meningkat sejalan dengan kondisi polusi habitatnya. Logam berat yang melebihi standar dalam tubuh organisme akan berimplikasi pada kesehatan manusia yang mengkonsumsi organisme tersebut. Undur-undur laut dapat ditemukan dalam jumlah besar di pesisir Widara Payung, Kabupaten Cilacap. Mereka ditangkap oleh penduduk setempat untuk dikonsumsi. Kandungan logam berat seperti Pb dalam tubuh undur-undur laut belum pernah diteliti di daerah ini sebelumnya. Penelitian ini bertujuan untuk menentukan konsentrasi timbal (Pb) pada undur-undur laut dan implikasinya terhadap kesehatan manusia bila mengkonsumsinya di daerah Widara Payung, Kabupaten Cilacap. Penelitian dilakukan pada bulan April sampai Mei 2018 dan lokasi pengambilan sampel ditentukan secara purposif. Sampel terdiri dari tiga jenis yaitu undur-undur laut, sedimen, dan air laut. Setiap sampel yang diambil disimpan dalam kotak pendingin dan kemudian dibawa ke Laboratorium Produktivitas dan Lingkungan Perairan di Institut Pertanian Bogor untuk analisis logam berat. Hasil penelitian ini menunjukkan bahwa rata-rata kandungan Pb dalam air, sedimen, dan undur-undur laut masing-masing adalah 0,007 mg/l, 43,43 mg /kg, 0,97 mg/kg. Kandungan timbal dalam undur-undur laut telah melampaui standar yang telah dikeluarkan oleh pemerintah Indonesia melalui BPOM yaitu 0,20 mg/kg. Dengan nilai tersebut, konsumsi undur-undur laut memiliki resiko kesehatan pada manusia. Monitoring kandungan logam di lingkungan habitat dan pada undur-undur laut menjadi prioritas.  Kata kunci: Emerita emeritus, Hippidae, intertidal, konsumsi, pencemaran