Variations in prevalence of viral, bacterial, and rhizocephalan diseases and parasites of the blue crab (Callinectes sapidus)

Rogers, Holly A.; Taylor, Sabrina S.; Hawke, John P.; Lively, Julie A.

doi:10.1016/j.jip.2015.03.002

Cited by 7 publications

(2 citation statements)

References 21 publications

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“…One notable weakness with the host-density explanation is that CsRV1 prevalence in the Gulf of Mexico was low yet C. sapidus populations in that region are known to be high (NOAA GSMFC 2015). A prior study of diseases of C. sapidus in the Gulf of Mexico also found lower prevalence (7%) of CsRV1 than in the mid-Atlantic (Rogers et al 2015a).…”

Section: Host Density and Specificitymentioning

confidence: 70%

Climate and season are associated with prevalence and distribution of trans-hemispheric blue crab reovirus (Callinectes sapidus reovirus 1)

Zhao

Behringer

Bojko

et al. 2020

Mar. Ecol. Prog. Ser.

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Among the many Callinectes spp. across the western Atlantic, the blue crab C. sapidus has the broadest latitudinal distribution, encompassing both tropical and temperate climates. Its life history varies latitudinally, from extended overwintering at high latitudes to year-round activity in tropical locations. Callinectes sapidus reovirus 1 (CsRV1) is a pathogenic virus first described in North Atlantic C. sapidus and has recently been detected in southern Brazil. Little information exists about CsRV1 prevalence at intervening latitudes or in overwintering blue crabs. Using a quantitative reverse transcription PCR (RT-qPCR) method, this study investigated CsRV1 prevalence in C. sapidus across latitudinal differences in temperature and crab life history, as well as in additional Callinectes spp. and within overwintering C. sapidus. CsRV1 prevalence in C. sapidus was significantly correlated with high water temperature and blue crab winter dormancy. Prevalence of CsRV1 in C. sapidus on the mid-Atlantic coast was significantly lower in winter than in summer. CsRV1 infections were not detected in other Callinectes spp. These findings revealed that CsRV1 is present in C. sapidus across their range, but not in other Callinectes species, with prevalence associated with temperature and host life history. Such information helps us to better understand the underlying mechanisms that drive marine virus dynamics under changing environmental conditions.

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Section: Host Density and Specificitymentioning

confidence: 70%

Climate and season are associated with prevalence and distribution of trans-hemispheric blue crab reovirus (Callinectes sapidus reovirus 1)

Zhao

Behringer

Bojko

et al. 2020

Mar. Ecol. Prog. Ser.

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“…A wide variety of bacteria, including Vibrio spp., are ubiquitous in halophilic marine invertebrates and their environments, including crabs (Rogers et al, 2015) and R. mangle (Rocha, Colares, Nogueira, Paes, & Melo, 2016). Among them, some Vibrionaceae produce inhibitory compounds against marine pathogens, with a few (<5%) ‘superkiller’ strains that show the ability to inhibit more than 25% of all other strains (Cordero et al, 2012), with activity against food‐poisoning, clinical and shrimp isolates of non‐VP AHPND (Balcázar et al, 2007; Burks et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Assessment of probiotic bacteria from marine coasts against Vibrio parahaemolyticus (AHPND strains) in Litopenaeus vannamei

et al. 2021

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Acute hepatopancreatic necrosis disease (AHPND) outbreaks caused by Vibrio parahaemolyticus (VPAHPND) emerged in Mexico in 2013, causing a 65% drop in shrimp tonnage produced. This work aimed to isolate bacterial strains from Mexican marine ecosystems antagonistic towards VPAHPND. Among 258 bacterial isolates, only 17 showed antagonist activity in vitro, but only (Bacillus pumilus‐Y100, B. pumilus‐Y119, B. pumilus‐43, Vibrio alginolyticus‐32a and V. campbellii‐H‐A) were chosen for bioassay challenge. These probiotic bacteria were sprayed on commercial shrimp pellets, and experimental infection was carried out by immersing the shrimp in VPAHPND inoculum. Bacterial strains 32a, Y100 and H‐A significantly reduced the cumulative mortality of shrimp exposed to AHPND (4.76%, 12.54% and 16% respectively). Y119 and 43 did not show any beneficial effect against VPAHPND but were pathogenic in previous assays with post‐larval white shrimp and bioassay trials. Concerning the qPCR results, the presence of low numbers of DNA copies of VPAHPND was found only in the H‐A trial, suggesting that H‐A exerts a bacteriostatic effect; in contrast, the results for 32a, Y100, Y119 and 43 were negative, indicating that these strains exhibited a microbicidal effect against VPAHPND. The histopathological results agreed with the qPCR results and did not show compatible lesions caused by AHPND. In conclusion, 32a and Y100 seem to be the first antagonists to specifically inhibit VPAHPND in vivo.

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Reovirus occurrence in mud crab farming systems and wild-caught brooders located in eastern coastal area of India

Ganesan

Baskaran

Raj³

et al. 2022

Aquacult Int

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Variations in prevalence of viral, bacterial, and rhizocephalan diseases and parasites of the blue crab (Callinectes sapidus)

Cited by 7 publications

References 21 publications

Climate and season are associated with prevalence and distribution of trans-hemispheric blue crab reovirus (Callinectes sapidus reovirus 1)

Climate and season are associated with prevalence and distribution of trans-hemispheric blue crab reovirus (Callinectes sapidus reovirus 1)

Assessment of probiotic bacteria from marine coasts against Vibrio parahaemolyticus (AHPND strains) in Litopenaeus vannamei

Reovirus occurrence in mud crab farming systems and wild-caught brooders located in eastern coastal area of India

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