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All Journal Indonesian Aquaculture Journal
Deni Irawan
Research Center for Conservation of Marine and Inland Water Resources, National Research and Innovation Agency (BRIN), Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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RESILIENCE AND PHYSIOLOGICAL RESPONSES OF THE DOMESTICATED ASIAN REDTAIL CATFISH Hemibagrus nemurus TO HYPOXIA CONDITION Aliati Iswantari; Kurniawan Kurniawan; Vitas Atmadi Prakoso; Deni Radona; Deni Irawan; Fera Permata Putri; Wahyulia Cahyanti; Otong Zenal Arifin; Jojo Subagja; Rudhy Gustiano; Irin Iriana Kusmini; Arif Wibowo; Anang Hari Kristanto
Indonesian Aquaculture Journal Vol 18, No 1 (2023): (June, 2023)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.18.1.2023.53-60

Abstract

Hypoxia is one of the critical issues in aquaculture production systems as it can lead to physiological disturbances in cultured fish. This research aimed to evaluate the tolerance level and physiological responses of domesticated Asian redtail catfish Hemibagrus nemurus reared in various hypoxia conditions. A total of 12 fish/treatment were acclimated to gradually decreased dissolved oxygen treatments until fish experienced aquatic surface respiratory (ASR) and loss of equilibrium (LOE). Cortisol, haemoglobin, and glucose levels were detected in the blood plasma to evaluate the stress response of the fish to hypoxia. The result showed that ASR of H. nemurus was identified at 2.17 ± 0.14 ppm of dissolved oxygen (DO) concentration with the percentage of ASR was 77.67 ± 9.53%, while LOE critical of H. nemurus happened at 0.63 ± 0.15 ppm of DO where 55.56 ± 4.81% of the fish experienced LOE. There were significant differences in the values of physiological parameters (blood cortisol, haemoglobin, and glucose) between control and treatments as fish experienced LOE (P<0.05). In the present  study, it was found that the Asian redtail catfish is classified as a hypoxia-sensitive fish group. Tehis finding is valuable information for the rearing and growing of the fish to provide an optimal DO concentration for their growth and survival.
EFFECTS OF DIFFERENT SALINITY LEVELS ON GROWTH AND PHYSIOLOGICAL RESPONSE OF Tor soro JUVENILE Ananda Ghifari Leying; Vitas Atmadi Prakoso; Otong Zenal Arifin; Jojo Subagja; Kurniawan Kurniawan; Deni Irawan; Wahyulia Cahyanti; Fera Permata Putri; Ofan Bosman; Arif Wibowo; Anang Hari Kristanto; Taufik Budhi Pramono
Indonesian Aquaculture Journal Vol 18, No 1 (2023): (June, 2023)
Publisher : Center for Fisheries Research, Agency for Marine and Fisheries Research and Human Resource

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.18.1.2023.71-77

Abstract

Tor soro is one of the most economically important native freshwater fish species in Indonesia. Nonetheless, the insufficient data regarding its salinity tolerance makes a thorough investigation of this issue imperative. This research was conducted to determine the effects of salinity on the growth and physiological response of Tor soro juveniles at optimum salinity levels. This study used Tor soro (total length: 5.0±0.08 cm; initial weight: 2.0 ± 0.06 g) with five salinity level treatments of, 0, 2, 4, 6, and 8 ppt, and the stocking density of 15 fish per aquarium (three replications). Fish were maintained for 30 days and fed with commercial aquafeed. In this study, the best growth was found in 2 ppt (length gain: 0.37 ± 0.05 cm; weight gain: 0.23 ± 0.01 g; specific growth rate in length: 1.38 ± 0.16 % day-1; specific growth rate in weight: 0.78 ± 0.05% day-1) which is significantly higher than 4, 6, and 8 ppt (p<0.05), but it is not significantly different from 0 ppt (p>0.05). The results of the physiological response showed that there were no significant stress responses in Tor soro juvenile for all salinity treatments (p>0.05). there was no effect of 2 ppt salinity on the growth parameters compared to controls, but salinities above ppt had a significant detrimental effect. Exposure to salinities did not have any stress effect as shown by physiological indicators.
Co-Authors Aliati Iswantari Ananda Ghifari Leying Anang Hari Kristanto Arif Wibowo Deni Radona Fera Permata Putri Irin Iriana Kusmini Jojo Subagja Kurniawan Kurniawan Ofan Bosman Otong Zenal Arifin Rudhy Gustiano Taufik Budhi Pramono Vitas Atmadi Prakoso Wahyulia Cahyanti