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All Journal Jurnal Akuakultur Indonesia Jurnal Ilmu dan Teknologi Kelautan Tropis
M. Subkhan
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Library & Information Science

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BENTHIC FORAMINIFERAL ASSEMBLAGES IN NATUNA ISLANDS Suhartati M. Natsir; M. Subkhan; Rubiman Rubiman; Singgih P.A. Wibowo
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (371.225 KB) | DOI: 10.29244/jitkt.v3i2.7819

Abstract

Natuna Islands cluster consisting of large and small islands which a very diverse ecosystems are occurred, including mangrove, seagrass and coral reefs. These waters can be a conducive habitat for various marine organisms, including foraminifera that can live in all types of waters. Collected foraminifera from a site reflect the relationships between species that are affected by ecological factors and the ability of these organisms adapt to their environment. These organisms are also used in the petroleum and mining line, and studied in the micropaleontology and palaeoecology. Therefore, the data on foraminifera in a marine community, including the waters of Natuna Islands are very important to support the fields. Sampling of this study was conducted in April 2011 in the waters off the coast until the ocean waters covering Bunguran, Subi Besar and Laut Islands. The benthic foraminifera that was collected as abundant in these three waters is symbiont bearing foraminifera, namely Amphistegina lessonii.Keywords: Assemblage, foraminifera, benthic and Natuna
Effect of Ultraviolet Radiation on Pathogenity of White Spot Syndrome Virus in Giant Tiger Prawn (Penaeus monodon Fab.) Subkhan, M.; Alifuddin, M.; Taslihan, A.
Jurnal Akuakultur Indonesia Vol. 4 No. 1 (2005): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (503.26 KB) | DOI: 10.19027/jai.4.79-87

Abstract

This experiment was conducted to examine the effect of UV irradiation on pathogenity of white spot syndrome virus (WSSV) in black tiger shrimp (Penaeus monodon Fab.).  A hundred ml of WSSV virus suspension (200 μg/ml) were placed at 30 cm under UV light 10 Watt.  Radiation on WSSV virus was performed for 15, 30, 45, and 60 minutes.  Black tiger sjrimp in density of 260 tails/L were immersed in 1000 ml of irradiated virus suspension (20 μg/ml) to test their pathogenities.  The results of study showed that duration of UV irradiation on WSSV virus was reverse correlated to their pathogenities.  In constrast, survival of black tiger shrimp was linear correlated to duration of UV inactivation of virus.  Higher survival rate of shrimp (65.52%) after challenge test was obtained by irradiation of virus for 60 min. Keywords:  WSSV, virus, pathogen, ultraviolet, black tiger prawn, Penaeus monodon   ABSTRAK Penelitian ini dilakukan untuk mengetahui pengaruh radiasi UV terhadap patogenitas virus White Spot Syndrome Virus (WSSV) pada udang windu (Penaeus monodon Fab).   Suspensi virus WSSV dengan konsentrasi 200 μg/ml sebanyak 100 ml ditempatkan 30 cm diradiasi menggunakan UV 10 Watt.  Radiasi dilakukan selama 15, 30, 45, dan 60 menit.  Udang dengan kepadatan 260 ekor/L direndam dalam 1000 ml suspensi virus (20 μg/ml) hasil radiasi untuk menguji patogenitasnya.  Hasil penelitian menunjukkan bahwa lama radiasi UV pada virus WSSV berbanding terbalik dengan tingkat patogenitasnya.  Sementara itu, lama inaktivasi virus dengan UV berbanding lurus terhadap kelangsungan hidup udang.  Kelangsungan hidup udang windu tertinggi (65,52%) setelah uji tantang diperoleh dengan meradiasi virus selama 60 menit. Kata kunci: WSSV, virus, patogen, ultraviolet, udang windu,  Penaeus monodon
Co-Authors A. Taslihan M. Alifuddin Rubiman Rubiman Singgih P.A. Wibowo Suhartati M. Natsir