Investigation of Nematopsis spp. oocysts in 7 species of bivalves from Chonburi Province, Gulf of Thailand

Tuntiwaranuruk, Chanawat; Chalermwat, Kashane; Upatham, E. S.; Kruatrachue, M; Azevedo, Carlos

doi:10.3354/dao058047

Cited by 30 publications

(33 citation statements)

References 8 publications

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“…There was limited study about the disease problems in wild and cultured mud crab in Malaysia. But much information of parasite infection is report from Australia (Kvingedal et al, 2006), Philippines (Bian et al, 1979, India (Jithendran et al, 2010) and Thailand (Prasadan and Janardanan, 2001;Tuntiwaranuruk et al, 2004), such as Hematodinium sp. (Li et al, 2008), Sacculina granifera (Phelan and Grubert, 2007;Boschma, 1949;Knuckey et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

Investigation of Parasites and Ecto-Symbiont in Wild Mud Crab, Genus Scylla from Terengganu Coastal Water, Malaysia: Prevalence and Mean Intensity

Ihwan¹,

Wahidah²,

Ambak³

et al. 2015

International J. of Zoological Research

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Seventy three sample of wild mud crab genus Scylla were collected from setiu wetland, Terengganu coastal waters, Malaysia with the measured of Carapace Width (CW) and Body Weight (BW) 8.9±0.1 and 103.9±3.8, respectively. The percentage prevalence of parasites from these studies is 81.9% and the mean intensity was 13. The total number of 887 parasites that were collected includes barnacle (Octolasmis spp.), ciliates, sessile protozoan (Epistylis sp.), nematode and copepod. The higher number of parasites that were found is barnacle with prevalence of 71.1% and mean intensity 14.4 followed by ciliates, nematode, copepod and sessile protozoan with prevalence of 18.1, 8.4, 2.4 and 1.2% and mean intensity 1.1, 2.1, 2.0, 1.0, respectively. Results show that pedunculate barnacle genus Octolasmis show the most abundance species of parasites, compared to others.

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Section: Resultsmentioning

confidence: 99%

Investigation of Parasites and Ecto-Symbiont in Wild Mud Crab, Genus Scylla from Terengganu Coastal Water, Malaysia: Prevalence and Mean Intensity

Ihwan¹,

Wahidah²,

Ambak³

et al. 2015

International J. of Zoological Research

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“…In addition, many lineages of apicomplexans are closely associated with marine invertebrates, including a number from commercially significant bivalve species from around the world (Morado et al 1984, Whyte et al 1994, Tuntiwaranuruk et al 2004, Aranda et al 2011, Uddin et al 2011, Kristmundsson et al 2015. This includes the unnamed and poorly understood APX found in NZ flat oysters that has been associated with mass mortality events in the largest commercial flat oyster fishery in NZ (Cranfield et al 2005).…”

Section: Discussionmentioning

confidence: 99%

“…By contrast, the ubiquitous coccidian Nematopsis sp. is common in bivalves worldwide (Tuntiwaranuruk et al 2004, Uddin et al 2011, Ceuta & Boehs 2012, Sühnel et al 2016 but is rarely reported to cause any tissue reaction (Azevedo & Cachola 1992, Azevedo & Matos 1999, unlike apicomplexan 'X' (APX) re ported in this paper which can severely damage its host (Hine 2002).…”

Section: Introductionmentioning

confidence: 99%

Partial 18S rRNA sequences of apicomplexan parasite ‘X’ (APX), associated with flat oysters Ostrea chilensis in New Zealand

Suong

Webb²,

Banks³

et al. 2017

Dis. Aquat. Org.

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Apicomplexa is a large phylum of parasitic protists renowned for significant negative health impacts on humans and livestock worldwide. Despite the prevalence and negative impacts of apicomplexans across many animal groups, relatively little attention has been given to apicomplexan parasites of invertebrates, especially marine invertebrates. Previous work has reported an apicomplexan parasite 'X' (APX), a parasite that has been histologically and ultrastructurally identified from the commercially important flat oyster Ostrea chilensis in New Zealand. This apicomplexan may exacerbate host vulnerability to the infectious disease bonamiosis. In this study, we report 18S rRNA sequences amplified from APX-infected O. chilensis tissues. Phylogenetic analyses clearly established that the 18S sequences were of apicomplexan origin; however, their detailed relationship to known apicomplexan groups is less resolved. Two specific probes, designed from the putative APX 18S rRNA sequence, co-localised with APX cells in in situ hybridisations, further supporting our hypothesis that the 18S sequences were from APX. These sequences will facilitate the future development of inexpensive and sensitive molecular diagnostic tests for APX, thereby assisting research focussed on the biology and ecology of this organism and its role in morbidity and mortality of O. chilensis.

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“…Nematopsis spp. was also reported in Perna canaliculus from New Zealand (Jones, 1975), Cerastoderma edule and Ruditapes decussates from Portugal (Azevedo and Cachola, 1992), Arcuatula arcuatula, Anadara granosa, Perna viridis and Paphia undulata from Thailand (Tuntiwaranuruk et al, 2004) and C. rhizophorae from Brazil (Sabry et al, 2007). Though in most cases Nematopsis infections are not pathogenic enough to lead to mortalities, cockle mortalities associated with Nematopsis infections have been reported from Portugal (Azevedo and Cachola, 1992;Azevedo and Matos, 1999).…”

Section: Introductionmentioning

confidence: 99%

Nematopsis sp. (Apicomplexa: Porosporidae) infection in Crassostrea madrasensis and its associated histopathology

Gangadharan¹,

Kripa²,

Mohamed³

et al. 2016

J.Mar.Biol.Ass.India

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The present study forms the first report of Nematopsis sp. infection in the edible oyster, Crassostrea madrasensis from India. The study was carried out as part of a detailed pathological investigation of C. madrasensis along the southwest coast of India. Sporozoites of Nematopsis sp. were found in samples collected from two locations. Light microscopic observation revealed ellipsoidal oocysts measuring 16.63±2.40 µm in length and 11.11± 2.49 µm in width (n=30) in the connective tissues of gills, mantle, visceral mass and gonads. Prevalence of infection ranged from 11 to 27%. Apparent pathological changes included compression of adjacent digestive diverticulae in visceral connective tissue infections and presence of phagocytosed oocysts in water channels in the case of gill infections. With relevance to the expanding culture of C. madrasensis, monitoring potential pathogens of this species in its natural habitat is important for developing suitable health management packages.

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Investigation of Nematopsis spp. oocysts in 7 species of bivalves from Chonburi Province, Gulf of Thailand

Cited by 30 publications

References 8 publications

Investigation of Parasites and Ecto-Symbiont in Wild Mud Crab, Genus Scylla from Terengganu Coastal Water, Malaysia: Prevalence and Mean Intensity

Investigation of Parasites and Ecto-Symbiont in Wild Mud Crab, Genus Scylla from Terengganu Coastal Water, Malaysia: Prevalence and Mean Intensity

Partial 18S rRNA sequences of apicomplexan parasite ‘X’ (APX), associated with flat oysters Ostrea chilensis in New Zealand

Nematopsis sp. (Apicomplexa: Porosporidae) infection in Crassostrea madrasensis and its associated histopathology

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