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Prakoso, Vitas Atmadi
Research Center for Biology-Indonesian Institute of Sciences
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science

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LETHAL DISSOLVED OXYGEN AND BLOOD PROPERTIES OF GREY MULLETS Mugil cephalus IN SEAWATER AND FRESHWATER [Oksigen Terlarut Letal dan Gambaran Darah Ikan Belanak Mugil cephalus di Air Laut dan Tawar] Prakoso, Vitas Atmadi; Kim, Ki Tae; Min, Byung Hwa; Gustiano, Rudhy; Chang, Young Jin
BERITA BIOLOGI Vol 15, No 1 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v15i1.2861

Abstract

Ikan belanak Mugil cephalus adalah salah satu spesies ikan euryhaline dan merupakan ikan ekonomis penting yang terdistribusi secara luas di dunia. Namun, penelitian tentang pengaruh faktor lingkungan terhadap metabolisme ikan ini masih kurang banyak diteliti meskipun hal tersebut penting untuk mengoptimalkan budidaya. Karena itu, penelitian ini dilakukan untuk mempelajari tingkat oksigen terlarut (DO) letal dan gambaran darah ikan belanak pada kondisi pemeliharaan dengan salinitas berbeda. Dua kelompok penelitian dilakukan untuk mengukur kadar DO letal dan gambaran darah ikan belanak pada kondisi pemeliharaan di air laut (LOS) dan air tawar (LOF). Pengamatan dilakukan menggunakan closed rectangular chamber dan sampel darah. Hasil penelitian menunjukkan bahwa kondisi ikan belanak menjadi tidak stabil pada kondisi oksigen terlarut di bawah 2 mg/L (1.3 mg/L pada LOS, 1.6 mg/L pada LOF). Dalam kondisi oksigen terlarut menjadi 1 mg/L, aktivitas ikan menurun dan mengalami kematian pada konsentrasi 0.3 mg/L. Kedua kelompok penelitian yang diamati tidak berbeda nyata (P>0.05). Parameter darah seperti Ht, Hb, osmolalitas, kortisol, dan glukosa dalam percobaan LOS memiliki nilai yang lebih tinggi dibandingkan dengan LOF. Percobaan menunjukkan bahwa indikator respon stress pada ikan belanak semakin meningkat dengan menurunnya kandungan oksigen dalam air. Kadar kortisol berada pada nilai 90.7 ng/ml di LOS dan 56.4 ng/ml di LOF, sedangkan kadar glukosa berada pada nilai 169.0 ng/ml di LOS dan 71.5 ng/ml di LOF. Dari penelitian ini dapat disimpulkan bahwa kadar oksigen terlarut bagi ikan belanak dianjurkan tidak berada di bawah 2 mg/L pada kondisi pemeliharaan di air laut maupun air tawar untuk menghindari kematian pada ikan.
REPRODUCTIVE BIOLOGY OF STRIPED SNAKEHEAD (Channa striata Bloch, 1973) IN BOGOR AND BEKASI, WEST JAVA [Biologi Reproduksi Ikan Gabus (Channa striata Bloch, 1973) di Bogor dan Bekasi, Jawa Barat] Saputra, Adang; Ath-thar, Muhamad Hunaina Fariduddin; Samsudin, Reza; Putri, Fera Permata; Prakoso, Vitas Atmadi
BERITA BIOLOGI Vol 16, No 3 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.053 KB) | DOI: 10.14203/beritabiologi.v16i3.3015

Abstract

Striped snakehead is one of the potential local species, however, its production in Indonesia still comes from capture fisheries. Over exploitation had decrease the population in nature. Domestication is one of promising tool to solve the problems faced. In order to breed the domesticated species, the information of their reproduction was needed. This study aimed to describe relationship between length and weight, length and fecundity, weight – fecundity and gonad weight – fecundity of the striped snakehead from West Java. A total of 19 mature female specimens were collected from Parung (Bogor), and seven mature female specimens were collected from Babelan (Bekasi). The results showed that the determinant value (R2), the first for Parung and the second for Babelan, between weight and fecundity were 0.599 and 0.843, length-fecundity were 0.541 and 0.841; gonad weight – fecundity 1.00 and 0.846 Gonadosomatic Index (GSI) ranged from 0.67 to 9.94% and 2.03 to 8.17%. Gonad Index ranged from 6.17 – 76.73 and 18.48 – 76.77, respectively. The data indicated that growth pattern was allometric. Length and body weight has linear relationship with gonads and fecundity. Fecundity has higher correlation to the weight rather than length. Gonad weight and fecundity has a strong relationship.
OXYGEN CONSUMPTION OF ROCK BREAM Oplegnathus fasciatus IN DIFFERENT SALINITY LEVELS AND TEMPERATURE DEGREES [Konsumsi oksigen Ikan Rock Bream Oplegnathus fasciatus pada tingkat salinitas dan suhu yang berbeda] Prakoso, Vitas Atmadi; Ryu, Jun Hyung; Min, Byung Hwa; Gustiano, Rudhy; Chang, Young Jin
BERITA BIOLOGI Vol 15, No 2 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2930.984 KB) | DOI: 10.14203/beritabiologi.v15i2.2303

Abstract

Rock bream Oplegnathus fasciatus is one of marine fish species with high commercial value in the region of East Asia. However, studies on the metabolism related to environmental factors for this species is still lacking. This study was therefore aimed to assess the effects of salinity and temperature on oxygen consumption (OC) of rock bream (TL: 26.9±0.6 cm, BW: 477.3±61.9 g) was observed by using respiratory chamber to understand the optimal salinity and temperature for culture of rock bream. Research was conducted in Pukyong National University, Busan, South Korea. Four experimental groups were conducted to measure oxygen consumption (OC) according to salinity (35, 25, 15, and 35?5 psu) and temperature changes (15?20?25oC). The results showed that low salinity exposures tend to decrease OC of rock bream (87.1, 78.3, 66.3, and 58.5 mg O2/kg/h at 35, 25, 15, and 5 psu, respectively). Meanwhile, the oxygen consumption of rock bream increased with increasing water temperatures (35 psu: 64.7, 104.0, and 175.9 mg O2/kg/h at 15, 20, and 25oC, respectively; 25 psu: 45.8, 101.7, and 185.9 mg O2/kg/h at 15, 20, and 25oC, respectively; 15 psu: 29.8, 103.3, and 155.5 mg O2/kg/h at 15, 20, and 25oC, respectively).
KERAGAAN PERTUMBUHAN HIBRIDISASI EMPAT STRAIN IKAN MAS Ath-thar, MH Fariduddin; Prakoso, Vitas Atmadi; Gustiano, Rudhy
BERITA BIOLOGI Vol 10, No 5 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (367.635 KB) | DOI: 10.14203/beritabiologi.v10i5.1919

Abstract

One way to support the increase of aquaculture production is to produce superior strains of growth. Carp as one of the potential for these commodities only rely on local strains which have had a decline in quality. For that, the effort to generate superior growth of carp need to be done. One way to do that is by hybridization. We carried out reciprocal crosses of 4 strains of carp Rajadanu, Subang, Majalaya and Kuningan to obtain 16 new strain candidates. Furthermore, growth test was conducted to find out the best candidate of the absolute and specific growth parameters. From these results, it was concluded that the absolute growth in length, weight, and the highest biomass obtained by crosses of SB x RD, the highest length and weight Specific Growth Rate obtained by crosses of RD x MJ. For the highest degree of survival is at the intersection of KN x SB, whereas the highest survival rate in the use of female parent KN. In the dominant male of female survival is the parent SB. The biggest positive heterosis character length growth values obtained by crosses of SB x RD. For the highest weight growth heterosis values obtained by crosses of SB x MJ. On the character of hatching, the highest positive heterosis values obtained by crosses of SB x MJ. The degree of survival of the highest heterosis values obtained by crosses of KN x MJ. On the character of the highest positive heterosis values of biomass obtained by crosses of SB x MJ. As for the character length SGR highest positive heterosis values obtained by crossing two directions of RD and SB. And for the character weight Specific Growth Rate, the highest positive heterosis values obtained by crossing two ways KN and MJ.
DERAJAT PENETASAN DAN SINTASAN LARVA IKAN BAUNG (Hemibagrus nemurus) DALAM DUA SISTEM PENETASAN BERBEDA Prakoso, Vitas Atmadi; Subagja, Jojo; Radona, Deni; Kristanto, Anang Hari; Gustiano, Rudhy
LIMNOTEK - Perairan Darat Tropis di Indonesia Vol 25, No 2 (2018)
Publisher : Research Center for Limnology

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Salah satu komoditas ikan air tawar di Indonesia yang memiliki prospek untuk budidaya adalah ikan baung (Hemibagrus nemurus). Namun, teknologi budidaya ikan baung masih perlu disempurnakan, khususnya perbenihannya untuk meningkatkan produktivitas budidaya ikan baung. Salah satu teknologi yang dapat dikembangkan adalah melalui teknik penetasan telur. Penelitian ini bertujuan untuk meningkatkan derajat penetasan dan sintasan larva ikan baung melalui dua sistem penetasan yang berbeda. Penelitian dilakukan di Instalasi Riset Plasma Nutfah Perikanan Air Tawar, Cijeruk, Bogor pada bulan Agustus 2017. Telur diperoleh dari induk ikan baung generasi kedua hasil domestikasi (Bobot induk betina: 443,3 ± 70,9 g; Bobot induk jantan: 486,7 ± 83,3 g). Metode penetasan yang diuji yaitu sistem baki (tray) dan corong (funnel) dengan masing-masing sistem penetasan terdiri dari empat ulangan. Parameter yang diamati adalah waktu penetasan, derajat penetasan dan sintasan larva selama dua hari. Pengukuran kualitas air yang diamati meliputi suhu, oksigen terlarut, dan pH. Hasil penelitian menunjukkan bahwa pada kisaran suhu yang sama, larva menetas pertama kali saat 34 jam setelah pembuahan pada sistem corong. Sementara itu pada sistem baki, larva pertama kali menetas saat 36 jam setelah pembuahan. Derajat penetasan pada sistem corong (65,79 ± 5,49 %) lebih tinggi dibandingkan pada sistem baki (30,60 ± 1,91 %) (P<0,05). Sintasan larva ikan baung selama dua hari tidak berbeda nyata antar sistem penetasan. Berdasarkan hasil penelitian ini, dapat disimpulkan bahwa sistem penetasan pada corong menghasilkan waktu penetasan telur dua jam lebih cepat dan derajat penetasan yang lebih tinggi dibandingkan sistem baki.
Co-Authors Chang, Young Jin Deni Radona, Deni Fera Permata Putri, Fera Permata Jojo Subagja Kim, Ki Tae Kristanto, Anang Hari MH. Fariduddin Ath-thar Min, Byung Hwa Reza Samsudin Rudhy Gustiano Ryu, Jun Hyung Saputra, Adang