2016
DOI: 10.3354/dao03004
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Molecular detection of the parasitic dinoflagellate Hematodinium perezi from blue crabs Callinectes sapidus in Louisiana, USA

Abstract: The dinoflagellate Hematodinium perezi is a prolific pathogen of the blue crab Callinectes sapidus along the Atlantic and Gulf of Mexico coasts of North America. High prevalence, sometimes approaching 100%, and outbreaks with high mortality are associated with higher salinities. H. perezi has not been reported previously in blue crabs from Louisiana, USA, where salinities in coastal habitats are generally below the parasite's favorable range. However, the possibility that H. perezi infects blue crabs in higher… Show more

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Cited by 4 publications
(7 citation statements)
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“…This is in contrast with recent studies from Louisiana, in Fig. 3 which H. perezi DNA was detected in blue crab megalopae (Sullivan et al 2016, Sullivan & Neigel 2017. Although there are ecosystem differences between the Delmarva Peninsula and the Gulf of Mexico, there is a potential confounding factor in the study by Sullivan et al (2016) and their later analyses.…”
Section: Discussioncontrasting
confidence: 76%
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“…This is in contrast with recent studies from Louisiana, in Fig. 3 which H. perezi DNA was detected in blue crab megalopae (Sullivan et al 2016, Sullivan & Neigel 2017. Although there are ecosystem differences between the Delmarva Peninsula and the Gulf of Mexico, there is a potential confounding factor in the study by Sullivan et al (2016) and their later analyses.…”
Section: Discussioncontrasting
confidence: 76%
“…3 which H. perezi DNA was detected in blue crab megalopae (Sullivan et al 2016, Sullivan & Neigel 2017. Although there are ecosystem differences between the Delmarva Peninsula and the Gulf of Mexico, there is a potential confounding factor in the study by Sullivan et al (2016) and their later analyses. The PCR primers used by Sullivan et al (2016) were originally designed to target the conserved 18S rRNA gene of a different Hematodinium sp., one that infects Tanner crabs Chionoecetes bairdi and snow crabs C. opilio from the North Pacific (Friedman et al 2009).…”
Section: Discussionmentioning
confidence: 98%
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“…However, H . perezi has recently been detected in adult blue crabs from high-salinity shoals off the coast and in blue crab megalopae settling in low-salinity marshes of Louisiana [ 28 ]. This pattern of occurrence is consistent with the life-cycle of the blue crab, which involves migrations between habitats that differ greatly in temperature and salinity.…”
Section: Introductionmentioning
confidence: 99%