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All Journal HAYATI Journal of Biosciences Jurnal Akuakultur Indonesia Jurnal Teknologi Perikanan dan Kelautan Jurnal Pengolahan Hasil Perikanan Indonesia Jurnal Akuakultur Rawa Indonesia ILMU KELAUTAN: Indonesian Journal of Marine Sciences Microbiology Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Omni-Akuatika Proceeding Simposium Nasional Kelautan dan Perikanan Jurnal Perikanan Universitas Gadjah Mada Indonesian Aquaculture Journal Jurnal Riset Akuakultur Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) Media Akuatika: Jurnal Ilmiah Jurusan Budidaya Perairan Jurnal Sains Terapan : Wahana Informasi dan Alih Teknologi Pertanian Makara Journal of Science Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Fisheries & Marine

MUNTI YUHANA

Departemen Budidaya Perairan, Fakultas Perikanan Dan Ilmu Kelautan - IPB University

Author-ID : 433680

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Library & Information Science Medicine & Pharmacology Social Sciences Veterinary

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BACTERIAL COMMUNITY SHIFTS OF A HIGH MOUNTAIN LAKE IN RESPONSE TO VARIABLE SIMULATED CONDITIONS: AVAILABILITY OF NUTRIENTS, LIGHT AND OXYGEN YUHANA, MUNTI; HORATH, THOMAS; HANSELMANN, KURT
BIOTROPIA Vol. 13 No. 2 (2006): BIOTROPIA Vol. 13 No. 2 December 2006
Publisher : SEAMEO BIOTROP

We studied bacterial population composition shifts by exposing natural water samples to variable simulated environmental conditions. The samples were taken from Lake Jori XIII (2640 m a.s.l), an oligo-to mesotrophic cold freshwater lake, located in the eastern Swiss Alps. The Jori lakes are characterized as remote, unpolluted high mountain lakes with a long period of ice cover and typically low nutrient concentrations. Culture independent techniques (PCR-based analyses) were used for detection and molecular characterization of a large number of bacteria most of which are still uncultivable. Bacterial community shifts over three ecological conditions (nutrients, light and oxygen availability) were detected by using Temporal Temperature gradient Gel Electrophoresis (TTGE) of a PCR-amplified part of the 16S rRNA gene. The bacterial populations responded differently to the variable conditions, as revealed by TTGE pattern shifts during the experiment. Key words: Temporal Temperature gradient Gel Electrophoresis (TTGE), ARB, small subunit ribosomal RNA gene (SSU rRNA gene), alpine freshwater lake JOri XIII, PCR

Effects of Humic Acid Addition to Feeds With Heavy Metal Cadmium Contamination From Green Mussels on the Growth Performance of Asian Seabass Rasidi, Rasidi; Jusadi, Dedi; Setiawati, Mia; Yuhana, Munti; Jr., Muhammad Zairin; Sugama, Ketut
BIOTROPIA Vol. 26 No. 3 (2019): BIOTROPIA Vol. 26 No. 3 December 2019
Publisher : SEAMEO BIOTROP

Although it contains heavy metals, the highly nutritious green mussel Perna viridis is used as a fish meal replacement in fish diets. Fortunately, humic acid (HA) has the ability to chelate heavy metals in animal feeds. Its addition to fish feed formulation is, therefore, needed to prevent the accumulation of heavy metals in the fish's body. Hence, an experiment using a Completely Randomized Design (CRD) with 5 treatments and 3 replications was conducted to evaluate the performance and feed efficiency of Asian seabass Lates calcarifer juveniles with the addition of HA to their green mussel–based diet containing the heavy metal cadmium (Cd). Five experimental diets were formulated with different dosages of HA addition at 0, 400, 800, 1200, and 1600 mg kg⁻¹ of feed as treatments A, B, C, D, and E, respectively. The experimental diets were given to triplicate groups of 15 Asian seabass juveniles with an initial body weight of 4.30 ± 0.60 g over a 70-day cultivation period, feeding until satiation. The results showed that feed consumption, feed digestibility, protein retention, growth performance, and feed efficiency were significantly affected by HA addition in the fish diet. Among all treatments, HA addition of 1600 mg kg⁻¹ produced the best biological response from the Asian seabass. To conclude, the HA addition of 1600 mg kg⁻¹ into the diet was the best dosage, resulting in optimal growth performance and feed efficiency in Asian seabass. The highest dose of HA in Cd-contaminated feeds could reduce Cd content, but had not yet been able to eliminate Cd in fish meat. Therefore, green mussel meal, with HA addition as an alternative protein source, has potential as a feed additive for Cd-contaminated diets of Asian seabass juveniles.

Co-Authors , Alimuddin , Rahman, , Achmad Farouq Ade Dwi Sasanti Adna Sumadikarta ADNI OKTAVIANA Afif, Usamah Afiff , Usamah Agus Alim Hakim Aldy Mulyadin Aliati Iswantari Alimuddin Alimuddin Alimuddin Alimuddin Alimuddin Angela M Lusiastuti Angela Mariana Lusiastuti Angela Mariana Lusiastuti Angela Mariana Lusiastuti ANGELA MARIANA LUSIASTUTI Angela Mariana Lusiastuti Anis Zubaidah Anja Meryandini Annisa Astri Anggraeni Arief Muhammad Arini Resti Fauzi Aris Tri Wahyudi Ayi Santika Ayi Santika Bako, Surandha Claritha Madonsa Claritha Madonsa Darna Andrian Ramadhan DEDI JUSADI Destianingrum, Nurin Dalilah Ayu Dinamella Wahjuningrum Eddy Supriyono Efianda, Teuku Reza Emei Widiyastuti Enang Harris Enang Harris Enang Harris Endang Susianingsih Endang Susianingsih Endang Susianingsih Engelhaupt, Martin Fachriyan Hasmi Pasaribu Fachriyan Hasmi Pasaribu Fachriyan Hasmi Pasaribu Faoziyatunnisa, Nurul Fauzi, Arini Resti Filibertus Tantio Firdausi, Amalia Putri Fitriana Nazar Gustilatov, Muhamad Hamida Pattah Hamsah Hamsah Hary Krettiawan Hasan Nasrullah Hasan Nasrullah Hermawaty Abubakar Hessy Novita Hessy Novita HORATH, THOMAS Iis Sumartini Iman Rusmana Ince Ayu Khairana Kadriah Ince Ayu Khairana Kadriah Ince Ayu Khairani Kadriah Inem Ode Inka Destiana Sapitri Irzal Effendi Istiqomah, Amalia Jr., Muhammad Zairin Julie Ekasari Ketut Sugama Ketut Sugama Khasanah, Noviati Rohmatul KURT HANSELMANN Kustiariyah Tarman La Ode Baytul Abidin La Ode Muhammad Arsal Laely Nuzullia Lili Sholichah Lilik Setiyaningsih Linuwih Aluh Prastiti M. Zairin Junior Majariana Krisanti Marini Wijayanti Mia Setiawati Mira Mawardi Muhammad Arif Mulya Muhammad Zairin Jr. Muharijadi Atmomarsono Nasrullah, Hasan Neltje Nobertine Palinggi Nur Bambang Priyo Utomo Nur Bambang Priyo Utomo Nuri Kamaliah, Syarifah Nuzullia, Laely Ode, Inem Pariakan, Arman Putra, The Best Akbar Esa Putri Shandra Ramhirez Ramhirez, Putri Shandra Ranta Sumadi Rasidi Rasidi Rasidi, Rasidi Ricko Reynalta Rini, Adityawati Fajar Ronald Kriston Sauttua Nainggolan Rr. Bellya Anasti Maharani S.H. Dwinanti Salamah Salamah Sefti Heza Dwinanti Soko Nuswantoro Sri Hariati Sri Nuryati Sudrajat, R Herman Sugeng Santoso Sukenda . Sukenda . Sukenda Sukenda Sukenda Sukenda Sukenda Sukenda Sukenda Sukenda Sukenda Sukenda Sukenda Sukenda Suleman, Gabriella Augustine Syamsiar, Syamsiar Tambun, Andreas Tri Heru Prihadi Tsani Untsa, Agista Usman Usman Usman Usman UTUT WIDYASTUTI WAODE MUNAENI WAWAN ABDULLAH SETIAWAN Wicaksono, Baref Agung WIDANARNI WIDANARNI Woro Nur Endang Sariati Yanti Inneke Nababan Yunarty Yunarty Yusli Wardiatno Zakki Zainun Zulfani, Anisa

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