Relationship between white spot syndrome virus and indicators of quality in Penaeus monodon postlarvae in Karnataka, India

Corsin, F.; Thakur, Prakash; Padiyar, P.A.; Madhusudhan, M.; Turnbull, James; Mohan, C. V.; Hảo, Nguyễn Văn; Morgan, K. L.

doi:10.3354/dao054097

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…The descriptive and probit regression analysis revealed that stocking screened PL alone cannot guarantee protection against WSSV. A study carried out in India also draws similar conclusions (Corsin, Thakur, Padiyar, Madhusudhan, Turnbull, Mohan, Hao & Morgan ). This supports the project's philosophy that thorough preparation of the gher and maintenance of bio‐security [Bio‐security is the protection of living organisms by the exclusion of pathogens and other undesirables.…”

Section: Summary and Discussion Of The Main Findingssupporting

confidence: 64%

The incidence of suspected white spot syndrome virus in semi-intensive and extensive shrimp farms in Bangladesh: implications for management

Karim¹,

Sarwer²,

Brooks³

et al. 2011

Aquac. Res.

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The study was conducted to assess key factors influencing suspected white spot syndrome virus (WSSV) disease and associated shrimp production and economic performance in three contrasting black tiger shrimp (Penaeus monodon) culture technologies promoted by the United States Agency for International Development funded Shrimp Quality Support Project (SQSP) in Bangladesh. A total of 350 traditional, 315 Modified Traditional Technol-ogy1 (MTT1), 36 MTT2 and 88 Closed System Technology (CST) farmers from 10 sub-districts in three districts of Khulna division were surveyed following random sampling at the end of the project. Binomial probit regression analysis revealed that smaller newly constructed ponds (known locally as gher) were less susceptible to WSSV, provided aquatic weeds were controlled using chemicals. Removal of sludge from ghers also had a positive effect, irrespective of technology and location. It was also shown that stocking of screened shrimp postlarvae (PL) does not guarantee protection against WSSV (t = 1.39, P > 0.05). Higher shrimp production was obtained by farmers practicing CST, followed by those operating MTTs and traditional technology respectively. Farmers who adopted CST also gained higher profitability followed by those operating MTT1, MTT2 and traditional technology.

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Section: Summary and Discussion Of The Main Findingssupporting

confidence: 64%

The incidence of suspected white spot syndrome virus in semi-intensive and extensive shrimp farms in Bangladesh: implications for management

Karim¹,

Sarwer²,

Brooks³

et al. 2011

Aquac. Res.

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show abstract

“…Corsin et al (2003) indicated that, in Karnataka, India, potential risk factors for WSSV included improper salinity in transportation bags, improper post-larvae (PL) length, and late stocking date. However, very little information is available about risk factors at the pond or farm level.…”

mentioning

confidence: 99%

Risk factors associated with white spot syndrome virus outbreaks in marine shrimp farms in Rayong Province, Thailand

Yaemkasem

Boonyawiwat²,

Kasornchandra³

et al. 2017

Dis. Aquat. Org.

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The purpose of this study was to determine risk factors for white spot disease (WSD) in Rayong, Thailand. A study was conducted from October 2014 to March 2015 to identify potential farm-level risk factors using a validated questionnaire. We completed 1 questionnaire for each farm; a total of 38 questionnaires from the case farms and 127 questionnaires from the control farms were collected. The results showed that the presence of WSD in previous crops and the use of seawater were risk factors (p < 0.01), indicating that the environment plays an important role in WSD outbreaks in Rayong. Good management practices for pond preparation and other mitigation steps should be part of a control measure program for WSD in this region.KEY WORDS: Shrimp ⋅ Epidemiology ⋅ Risk factors ⋅ White spot syndrome virus 124: 193-199, 2017 temperature and pH affected the shrimp and influenced WSD infection. Corsin et al. (2003) indicated that, in Karnataka, India, potential risk factors for WSSV included improper salinity in transportation bags, improper post-larvae (PL) length, and late stocking date. However, very little information is available about risk factors at the pond or farm level. Corsin et al. (2001) reported that the location of a pond close to the sea was a risk factor in Vietnam. In the Philippines, an important risk factor was feeding live mollusks to the shrimp (Tendencia et al. 2011). Recently, in Thailand, Piamsomboon et al. (2015) indicated that risk factors included the sourcing of water from communal canals, the use of year-round cultures, and an owner operating multiple farm sites. Resale or republication not permitted without written consent of the publisherDis Aquat OrgThe purpose of the present study was to identify farm-level risk factors for WSD in Rayong, Thailand. Results of this study will be used to improve or establish measures that can be used to prevent or control WSD in this area. This will reduce the economic losses of farmers in Rayong. In addition, conclusions from this study may also in struct disease evaluation and control in other geographical areas, both in side and outside Thailand. MATERIALS AND METHODS Target population and study frameworkAll active marine shrimp farms in Rayong were examined in this study. We selected this area because marine shrimp culture is predominant. Most of the farms in this area are located in 2 districts: the Mueang Rayoung District and the Klaeng District (Fig. 1). A study was conducted from October 2014 to March 2015 to identify potential among-farm (farmlevel) risk factors using a validated questionnaire. At the initiation stage of this study, the laboratory results from passive surveillance by the Department of Fisheries (DoF) of Thailand were used to categorize shrimp farms as either cases or controls. To qualify as a suspected farm for WSD, a farmer had to have called in a report to the local DoF and had to have brought at least 15 suspected shrimp to the laboratory. The following clinical signs were used to define the suspected cases and ide...

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“…The mechanism for WSSV inhibition at 32°C has recently been discovered (Lin et al, 2011). However, use of such methods to improve post larval quality without also providing appropriate biosecurity in rearing ponds (e.g., carrier removal and restricted water exchange) does not significantly reduce the incidence of disease outbreaks in areas where WSSV may be prevalent in natural carriers and exchange water (Corsin et al, 2002(Corsin et al, , 2003.…”

Section: Major Viral Pathogens Of P Monodon In Asiamentioning

confidence: 98%

Historic emergence, impact and current status of shrimp pathogens in Asia

Flegel

2012

Journal of Invertebrate Pathology

505

239

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Relationship between white spot syndrome virus and indicators of quality in Penaeus monodon postlarvae in Karnataka, India

Cited by 6 publications

References 15 publications

The incidence of suspected white spot syndrome virus in semi-intensive and extensive shrimp farms in Bangladesh: implications for management

The incidence of suspected white spot syndrome virus in semi-intensive and extensive shrimp farms in Bangladesh: implications for management

Risk factors associated with white spot syndrome virus outbreaks in marine shrimp farms in Rayong Province, Thailand

Historic emergence, impact and current status of shrimp pathogens in Asia

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