Factors affecting outbreaks of epizootic ulcerative syndrome in farmed fish in Bangladesh*

Ahmed, M.; Rab, M. A.

doi:10.1111/j.1365-2761.1995.tb00301.x

Cited by 19 publications

(8 citation statements)

References 5 publications

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“…The present study shows that the prevalence of EUS was 18.72% which was closely related to the result of Faruk et al (2004) who found 18.9% in northern part of Bangladesh. Similar results also reported by Hossain et al (1992) and Ahmed and Rab (1995). During 1988 -1989 the estimated economic losses by EUS disease in Bangladesh was US$ 4.8 million (Barua 1990).…”

Section: Farmers' Perception Of Aquaculturesupporting

confidence: 86%

Fish diseases and strategies taken by the farmers in freshwater aquaculture at southwestern Bangladesh

Aftabuddin

Islam

Bhuyain

et al. 2016

Bangladesh J. Zool.

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Abstract:To understand the present status of fish diseases and their remedial measures taken by the fish farmers, a questionnaire survey and Participatory Rural Appraisal (PRA) tools including Focus Group Discussion (FGD) were conducted in seven districts of Bangladesh. In total 196 farmers were interviewed and nine FGD sessions were conducted. Disease occurs immediately after stocking (24%) and during the rainy season (21%) followed by cold season (19%). Mortality, abnormal swimming and feeding behavior, unusual appearance, some localized lesions and reduced growth are the main clue to recognize the fish disease. The most frequently observed diseases were epizootic ulcerative syndromes (18.72%) followed by tail and fin rot (13.19%), red spot (11.49%), gill rot (9.36%), parasitic disease (8.93%), broken prawn antennae (7.23%), and other environmental and nutritional diseases. To cure these diseases, farmers applied the following treatments: lime and potash, liming, lime and salt, lime alone, salt and potash, antibiotics, various chemicals, high doses of vitamin C, complete water exchange, and transport to another pond. This study showed that diseases can play important roles in freshwater aquaculture, but this role is often not recognized due to a lack of knowledge and veterinary backstopping services.

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Section: Farmers' Perception Of Aquaculturesupporting

confidence: 86%

Fish diseases and strategies taken by the farmers in freshwater aquaculture at southwestern Bangladesh

Aftabuddin

Islam

Bhuyain

et al. 2016

Bangladesh J. Zool.

View full text Add to dashboard Cite

show abstract

“…Due to the fact that isolated bacteria are ubiquitous opportunistic pathogens, it is recommended that the environmental conditions the fish live in should be improved, because stressors predispose fish to suffer from bacterial borne diseases (Snieszko 1974;Ahmed and Rab 1995).…”

Section: Disease Managementmentioning

confidence: 99%

Improved Sustainable Aquaculture Systems for Small-Scale Farmers in Northern Vietnam

Pucher

Steinbronn

Mayrhofer

et al. 2012

Sustainable Land Use and Rural Development in Southeast Asia: Innovations and Policies for Mountainous Areas

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“…There is no accepted treatment for farmed fish infected with A. invadans , although several useful preventative measures, such as exclusion of particular fish species and liming of fish ponds, have been identified. Ahmed & Rab, (1995) calculated that post‐stocking applications of 9 kg ha −1 (9 p.p.m.) agricultural lime (CaCO 3 ) reduced the risk of EUS in Bangladesh culture ponds.…”

Section: Introductionmentioning

confidence: 99%

In vitro screening of novel treatments for Aphanomyces invadans

Campbell

Lilley

Panyawachira³

et al. 2001

Aquaculture Research

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Forty-nine compounds were tested in vitro for fungicidal activity against hyphae of the ®sh-pathogenic Oomycete fungus, Aphanomyces invadans. These comprised: (a) chemicals with previous reported activity against Oomycete fungi; (b) chemicals in use in Asia to treat ulcerative disease outbreaks; (c) commercial biocides and fungicides; (d) natural products with potential antimicrobial activity; and (e) surfactants tested separately and in combination with some of the above treatments. No compounds tested proved as effective as malachite green, but some low-toxicity natural compounds and particular surfactants showed potential for further studies. Some compounds that are currently in use in Asian aquaculture were shown to have no effect on A. invadans hyphae at recommended treatment rates. A range of compounds that demonstrated activity against the mycelium were selected for further testing in a zoospore motility assay. Lower treatment concentrations were required to inhibit zoospore motility than were required to inhibit hyphal growth. Zoospore activity ceased within 1 h of exposure to 2.5 parts per million (p.p.m.) coconut diethanolamide; 1.25 p.p.m. propolis + 0.5 p.p.m. 13/6.5; 5 p.p.m. neem (Azadirachta siamensis) seed extract + 0.01 p.p.m. OP10; 20 p.p.m. tea tree (Melaleuca alterni¯oria) oil; and 25 p.p.m. D-limonene + 0.05 p.p.m. E-Z-Mulse TM . The treated spores were shown to be non-viable in culture medium. Selected compounds were further tested for ability to inhibit zoospore production by A. invadans mycelium over a 72-h period. In toxicity trials, silver barb, Barbodes gonionotus (Bleeker), exposed to 2.

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Factors affecting outbreaks of epizootic ulcerative syndrome in farmed fish in Bangladesh*

Cited by 19 publications

References 5 publications

Fish diseases and strategies taken by the farmers in freshwater aquaculture at southwestern Bangladesh

Fish diseases and strategies taken by the farmers in freshwater aquaculture at southwestern Bangladesh

Improved Sustainable Aquaculture Systems for Small-Scale Farmers in Northern Vietnam

In vitro screening of novel treatments for Aphanomyces invadans

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