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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA AL KAUNIYAH Biogenesis: Jurnal Ilmiah Biologi Biota Jurnal Biodjati Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Biosaintifika: Journal of Biology & Biology Education Scripta Biologica Journal of Microbial Systematics and Biotechnology Sains dan Matematika BioEksakta : Jurnal Ilmiah Biologi Unsoed PSEJ (Pancasakti Science Education Journal) Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Molekul: Jurnal Ilmiah Kimia Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Eko Setio Wibowo
Fakultas Biologi Universitas Jenderal Soedirman
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Veterinary

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Biological Aspects of Diopatra claparedii Grube, 1878 (Onuphidae, Polychaeta) Maintained at Different Salinity Levels Wibowo, Eko Setio; Atang, Atang; Setiyono, Eko; Hana, Hana; Simanjuntak, Sorta Basar Ida; Susilo, Untung; Sucharitakul, Phuping; Apriyanti, Yuni; Pamungkas, Joko
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 1 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.1.1-6

Abstract

Diopatra claparedii Grube, 1878, is a tubicolous polychaete species widely used as fishing bait by local anglers in Cilacap, Central Java, Indonesia. Little is known about its biological characteristics despite its ecological and economic importance. This study aimed to examine the survival rate, growth, metabolic rate, and osmoregulatory capacity of D. claparedii under different salinity conditions. The experiment was conducted using plastic containers (20 × 30 × 25 cm) filled with a muddy substrate and water at four salinity levels: 10, 15, 20, and 25 ppt, with each treatment replicated five times. The results showed that the survival rate of D. claparedii ranged from 87% to 93%, while its growth varied between 0.17 and 0.58 g. The metabolic rate, measured in terms of oxygen consumption, ranged from 0.201 to 0.467 mg·g-¹·h-¹. The  osmoregulatory capacity of the worms varied between 1.26 and 1.54 mOsm·kg-¹ solvent. Statistical analysis indicated that salinity did not significantly affect survival (p> 0.05). However, it significantly influenced growth, metabolic rate, and osmoregulatory capacity (p< 0.05). The results suggested that a 15–25 ppt salinity range was more favorable for the species, with 20 ppt being the most optimal level for its maintenance and growth. This study highlights the potential for cultivating D. claparedii under controlled conditions, providing a sustainable alternative to wild harvesting. As polychaete farming has been successfully implemented in several countries, similar efforts could be applied in Indonesia to support local fisheries while conserving natural populations.
Protease and Amylase Activities of Javaen barb (Systomus rubripinnis Val.) Susilo, Untung; Rachmawati, Farida Nur; Wibowo, Eko Setio
Jurnal Biodjati Vol 7 No 1 (2022): May
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v7i1.15535

Abstract

Studies on morphology, growth, and reproduction have been carried out on wild Javaen barb, but there was no information on its digestive capacity; therefore, the research was conducted to determine protease and amylase activities in the digestive tract. This study used a total of 50 barbs with body weights between 13.56 -128.93g / fish. The measurement of enzyme activity was carried out using the spectrophotometer method. The results showed that differences in fish size resulted in differences in protease activity, but not for amylase. Fish with a small size have a higher protease activity than fish with a larger size. The protease activity did not differ between pH 6.9 to 10.0 but was higher than pH 12.5. Protease activity also did not vary between the anterior and posterior intestine and between 30-50°C. Amylase activity also found no difference between the anterior and posterior intestine, but there was a difference in activity between temperatures of 30-50°C. In conclusion, protease activity occurs in a neutral to alkaline environment, and there were differences in protease activity between different body sizes but not between intestinal segments. Amylase activity occurs throughout the intestine and decreases at temperatures of 50°C.
Growth, Food Efficiency, and Enzyme Activities in Yellow Rasbora (Rasbora lateristriata) at Different Feeding Frequencies Susilo, Untung; Sistina, Yulia; Wibowo, Eko Setio; Mahmoud, Hanan Hassan Alsheikh; Hana, Hana; Rachmawati, Farida Nur
Jurnal Biodjati Vol 8 No 1 (2023): May
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v8i1.25029

Abstract

Many studies have been conducted on the feeding frequency in fish, but there is no information on R. lateristriata. Therefore, this study aimed to determine yellow rasbora growth performance, feed efficiency, and digestive enzyme activity at different feeding frequencies. This research was conducted experimentally with four treatments and three replications. The treatments include: P1 fish were fed two times/day; P2 fish were fed three times/day; P3 fish were fed four times/day; and P4 fish were fed five times/day. In this experiment, 420 two-month-old yellow rasboras were used. The experimental results showed that body weight gain, RGR, SGR, CF, FCR, PER, body lipid & protein levels, protein and lipid retention, protease, and amylase activity were not significantly different (p>0.05) between different feeding frequencies. However, lipase and alkaline phosphatase activities differed significantly among the different feeding frequencies. Growth performance, feed efficiency, protease activity, and yellow rasbora amylase are not affected by feeding frequency between two to five times a day. Still, the highest lipase and alkaline phosphatase activity were achieved at the feeding frequency four times a day, but no effect on growth. So, feeding twice a day is considered quite efficient for the culture of yellow rasbora. The results of this study can contribute to the development of fish farming, especially the yellow rasbora, in the future.
Biological aspects of Diopatra sp. (Onuphidae, Polychaeta) collected from mangrove habitats of Jeruklegi, Cilacap Regency Wibowo, Eko Setio; Puspitasari, IGA Ayu Ratna; Atang, Atang; Pamungkas, Joko
Depik Vol 11, No 3 (2022): DECEMBER 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.3.25787

Abstract

Diopatra species are members of the family Onuphidae (Polychaeta, Annelida) that are widely used as fishing bait. These tubicolous worms are common in particular mangrove areas of Cilacap. However, biological aspects of Diopatra sp. inhabiting the areas have not been studied. In the present work, we investigated several biological aspects of the worms, including the segment number, the body weight and the sex ratio, based on Diopatra samples collected from four mangrove habitats of Jeruklegi Village, Cilacap Regency, between June and July 2021. The results show that the average numbers of segments of Diopatra sp. obtained ranged from 195 to 216 segments, whereas the average body weights ranged from 2.03 to 3.12 g, and the average sex ratios ranged from 0.5 to 1.3. In general, the biological aspects of Diopatra sp. between sampling sites were relatively similar; this can be attributed to the similar environmental conditions at all sampling sites, including salinity (2532 ppt), water temperature (3032 oC), dissolved oxygen (6.48.8 ppm) and pH (7). While Diopatra worm farming is necessary so that local people do not rely on natural catch, a further taxonomic study is required to reveal the identity of this economically important local species.Keywords:Biological aspectDiopatraMangrove habitatPolychaetesTubicolous worms
Co-Authors Asrul Sahri Siregar Atang Atang Atang Atang Atang Atang Atang Atang Atang Atang Atang Atang ` Atang, Atang Atang, Atang Edy Yuwono Eko Setiyono Endah Sri Palupi Endah Sri Palupi Farida Nur Rachmawati Farida Nur Rachmawati Farida Nur Rachmawati Farida Nur Rachmawati Farida Nur Rachmawati Fita Fatimah Hana Hana Hana Hana, Hana I G A Ayu Ratna Puspitasari I G A Ayu Ratna Puspitasari I G A Ayu Ratna Puspitasari I Gusti Agung Ayu Ratna Puspitasari IG.A.Ayu Ratna Puspita Sari IGA Ayu Ratna Puspitasari IGA. Ayu Ratna Puspita Sari Indarmawan Indarmawan Indarmawan Indarmawan, Indarmawan Irwanti, Nabilla Gina Joko Pamungkas Joko Pamungkas Joko Pamungkas Koni Okthalina Mahmoud, Hanan Hassan Alsheikh Mellya Rizki Pitriani Muthiara N. A. Mulyani Nahdatulia, Yasinta Nuniek Ina Ratnaningtyas Oktaviani, Safira Dwi Palupi, Endah Sri Palupi, Endah Sri Phuping Sucharitakul Priyo Susatyo Purnama Sukardi Purwati, Ita Puspita Sari, I Gusti Agung Ayu Ratna Puspita Sari, IG.A.Ayu Ratna Puspitasari, IGA Ayu Ratna Puspitasari, IGA. Ayu Ratna Ratna Stia Dewi Ristiandani R. Pradhyaningrum S. Sugiharto Safitri, Nuridha Audinia Setiyono, Eko Sorta Basar Ida Simanjuntak Sorta Basar Ida Simanjuntak Sri Lestari Sucharitakul, Phuping Untung Susilo Untung Susilo Untung Susilo Untung Susilo Untung Susilo Wijinindyah, Ayutha Yulia Sistina Yuni Apriyanti, Yuni Zakiah, Kiki Siti