Parasitic dinoflagellate Hematodinium in marine decapod crustaceans: a review on current knowledge and future perspectives

Alimin, Ade Wahyul Fajri; Yusoff, Nor Asma Husna; Kadriah, Ince Ayu Khairana; Anshary, Hilal; Abdullah, Farizan; Jabir, Nurhidayah; Susianingsih, Endang; Hassan, Marina

doi:10.1007/s00436-023-08067-z

Cited by 3 publications

(3 citation statements)

References 130 publications

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“…Several factors affect the epidemiology of Hematodinium, including environmental conditions such as salinity and temperature. It is known that this parasite tends to infect hosts in high salinity waters [79]. For example, in Europe (Wadden Sea), no detection of Hematodinium in 1252 individuals of eight crustacean species from six sites was reported due to lower salinity [78].…”

Section: Discussionmentioning

confidence: 99%

Hematodinium perezi (Dinophyceae: Syndiniales) in Morocco: First Record on the African Atlantic Coast, and First Country Record of a Parasite of the Invasive Blue Crab Callinectes sapidus

Lamkhalkhal,

Rahmouni,

Selfati

et al. 2024

Preprint

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Dinoflagellates belonging to Hematodinium are important parasites of marine crustaceans, primarily dec-apods. In this study, we document the first report of H. perezi Chatton & Poisson, 1930 on the African Atlantic coast. This is also the first parasite record in the invasive American blue crab Callinectes sapidus Rathbun, 1896 in Morocco. Specimens of C. sapidus were sampled in winter 2023 from two Ramsar sites on the Atlantic coast of Morocco, namely Merja Zerga and Oualidia Lagoons, and were screened to detect the presence of parasites in their hemolymph. Based on staining fresh hemolymph smears, we did not de-tect Hematodinium in any of the 36 investigated individuals (20 and 16 from Merja Zerga and Oualidia lagoons, respectively), probably due to methodological artifacts. The PCR-based method was revealed to be more accurate in diagnosing the Hematodinium parasite. It showed that 13 blue crabs were infected by the parasite at Merja Zerga Lagoon (prevalence 65%) and four individuals at Oualidia Lagoon (25%). Ge-netic analysis, based on the ITS1 rDNA gene from Hematodinium, confirmed the sequences as being those of Hematodinium perezi.

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Section: Discussionmentioning

confidence: 99%

Hematodinium perezi (Dinophyceae: Syndiniales) in Morocco: First Record on the African Atlantic Coast, and First Country Record of a Parasite of the Invasive Blue Crab Callinectes sapidus

Lamkhalkhal,

Rahmouni,

Selfati

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The epidemiology of Hematodinium is influenced by a number of variables, including environmental factors (salinity and temperature). It is well known that this parasite prefers to infect hosts in highly saline waters [79]. For example, in Europe (Wadden Sea), no detection of Hematodinium in 1252 individuals of eight crustacean species from six sites was reported due to lower salinity [65].…”

Section: Discussionmentioning

confidence: 99%

Hematodinium perezi (Dinophyceae: Syndiniales) in Morocco: The First Record on the African Atlantic Coast and the First Country Record of a Parasite of the Invasive Non-Native Blue Crab Callinectes sapidus

Lamkhalkhal,

Rahmouni,

Selfati

et al. 2024

JMSE

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Dinoflagellates belonging to the genus Hematodinium are key parasites of marine crustaceans, primarily decapods. In this study, we document the first report of H. perezi Chatton & Poisson, 1930 on the African Atlantic coast. This is also the first parasite record in the invasive non-native Atlantic blue crab Callinectes sapidus Rathbun, 1896 in Morocco. Specimens of C. sapidus were sampled in winter 2023 from two Ramsar sites on the Moroccan Atlantic, namely Merja Zerga and Oualidia Lagoons, and were screened to detect the presence of parasites in their hemolymph. Based on staining fresh hemolymph smears, we did not detect Hematodinium in any of the 36 investigated individuals (20 and 16 from Merja Zerga and Oualidia Lagoons, respectively), probably due to methodological artifacts. The PCR-based method was revealed to be more accurate in diagnosing the Hematodinium parasite. It showed that at Merja Zerga Lagoon, 13 individuals of C. sapidus were infected by the parasite (prevalence: 65%) in comparison to four at Oualidia Lagoon (25%). Genetic analysis, based on the ITS1 rDNA gene from Hematodinium, confirmed the sequences as being those of Hematodinium perezi.

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“…In addition, there are other macroscopic signs, such as discoloured carapace, although the results are inconsistent. The complete Hematodinium life cycle remains unknown, but transmission is thought to be direct, with no evidence of the involvement of an intermediate host (Alimin et al 2024).…”

Section: Introductionmentioning

confidence: 99%

No evidence of Hematodinium spp. infections in the recently established Barents Sea snow crab population

Skår,

Karlsbakk,

Nunkoo

et al. 2024

Bulletin of the European Association of Fish Pathologists

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Snow crab (Chionoecetes opilio) is a recent addition to the Barents Sea fauna, being registered for the first time in the area in 1996. Arctic snow crabs have previously been found to harbour Hematodinium spp. infections. In the present study, haemolymph samples from 142 snow crabs caught in the central Barents Sea in November 2016 were screened for presence of Hematodinium spp. infections by using microscopic examination and two different PCR assays. No positive samples were detected. Hematodinium may not have been present in the snow crabs in this area at the time of sampling.

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Parasitic dinoflagellate Hematodinium in marine decapod crustaceans: a review on current knowledge and future perspectives

Cited by 3 publications

References 130 publications

<em>Hematodinium perezi</em> (Dinophyceae: Syndiniales) in Morocco: First Record on the African Atlantic Coast, and First Country Record of a Parasite of the Invasive Blue Crab <em>Callinectes sapidus</em>

<em>Hematodinium perezi</em> (Dinophyceae: Syndiniales) in Morocco: First Record on the African Atlantic Coast, and First Country Record of a Parasite of the Invasive Blue Crab <em>Callinectes sapidus</em>

Hematodinium perezi (Dinophyceae: Syndiniales) in Morocco: The First Record on the African Atlantic Coast and the First Country Record of a Parasite of the Invasive Non-Native Blue Crab Callinectes sapidus

No evidence of Hematodinium spp. infections in the recently established Barents Sea snow crab population

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