A New Population and Habitat for Neotricula aperta in the Mekong River of Northeastern Thailand: A DNA Sequence-Based Phylogenetic Assessment Confirms Identifications and Interpopulation Relationships

Limpanont, Yanin; Chusongsang, Phiraphol; Chusongsang, Yupa; Limsomboon, Jareemate; Sanpool, Oranuch; Kaewkong, Worasak; Intapan, Pewpan M.; Janwan, Penchom; Sadaow, Lakkhana; Maleewong, Wanchai

doi:10.4269/ajtmh.14-0467

Cited by 6 publications

(10 citation statements)

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“…peregrinorum – – – – – – – + – – – – – – – Sem. toucheana – – – – – – – + – – – – – – – Pomatiopsidae Neotricula aperta Cambodia, Laos, Thailand – – – – – – – – – – – – + [ 59 ] Oncomelania hupensis China, Indonesia, Philippines + – – – – – – – – + – – – [ 60 ] Robertsiella kaporensis Malaysia – – – – – – – – – – + – – [ 110 ] Subulinidae Allopeas kyotoensis Japan + – – – – – – – – – – – – [ 21 ] <...>…”

Section: Introductionmentioning

confidence: 99%

“…For example, the life cycles of Schistosoma japonicum and S. mekongi require Oncomelania hupensis and Neotricula aperta as their intermediate hosts, respectively. These snails have limited distributions: N. aperta is endemic to Cambodia, Laos and Thailand [ 59 ], and O. hupensis is found only in China, Indonesia and the Philippines [ 60 ]. Pomacea canaliculata , which is native to South America, was introduced to China in the 1980s and has since replaced Achatina fulica to become a major intermediate host that is the primary cause of A. cantonensis infection in humans in China [ 61 ].…”

Section: Introductionmentioning

confidence: 99%

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Snail-borne parasitic diseases: an update on global epidemiological distribution, transmission interruption and control methods

Limpanont

et al. 2018

Infect Dis Poverty

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103

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BackgroundSnail-borne parasitic diseases, such as angiostrongyliasis, clonorchiasis, fascioliasis, fasciolopsiasis, opisthorchiasis, paragonimiasis and schistosomiasis, pose risks to human health and cause major socioeconomic problems in many tropical and sub-tropical countries. In this review we summarize the core roles of snails in the life cycles of the parasites they host, their clinical manifestations and disease distributions, as well as snail control methods.Main bodySnails have four roles in the life cycles of the parasites they host: as an intermediate host infected by the first-stage larvae, as the only intermediate host infected by miracidia, as the first intermediate host that ingests the parasite eggs are ingested, and as the first intermediate host penetrated by miracidia with or without the second intermediate host being an aquatic animal. Snail-borne parasitic diseases target many organs, such as the lungs, liver, biliary tract, intestines, brain and kidneys, leading to overactive immune responses, cancers, organ failure, infertility and even death. Developing countries in Africa, Asia and Latin America have the highest incidences of these diseases, while some endemic parasites have developed into worldwide epidemics through the global spread of snails. Physical, chemical and biological methods have been introduced to control the host snail populations to prevent disease.ConclusionsIn this review, we summarize the roles of snails in the life cycles of the parasites they host, the worldwide distribution of parasite-transmitting snails, the epidemiology and pathogenesis of snail-transmitted parasitic diseases, and the existing snail control measures, which will contribute to further understanding the snail-parasite relationship and new strategies for controlling snail-borne parasitic diseases.Electronic supplementary materialThe online version of this article (10.1186/s40249-018-0414-7) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Snail-borne parasitic diseases: an update on global epidemiological distribution, transmission interruption and control methods

Limpanont

et al. 2018

Infect Dis Poverty

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103

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“…aperta was reported from the Mekong river at Ban Tha Kathin, Sri Chiang Mai District (Nong Khai Province, Thailand), which is over 200 km upstream of any previously recorded population. Interestingly, the snails in Nong Khai were found on rocks incorporated within concrete as part of anti-erosion defences along the river [5]. N .…”

Section: Introductionmentioning

confidence: 99%

“…A more recent DNA-sequence based phylogeny was published (Limpanont et al, 2015) [5] based on one new population (previously unsampled), four new samples of previously studied populations, and data previously published (Attwood & Johnston, 2001) [20] for five Mekong river populations, one Xé Bang Fai river (Khammouanne Province, Laos) N . γ-aperta population, one population of N .…”

Section: Introductionmentioning

confidence: 99%

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Population genetic structure and geographical variation in Neotricula aperta (Gastropoda: Pomatiopsidae), the snail intermediate host of Schistosoma mekongi (Digenea: Schistosomatidae)

2019

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BackgroundNeotricula aperta is the snail-intermediate host of the parasitic blood-fluke Schistosoma mekongi which causes Mekong schistosomiasis in Cambodia and the Lao PDR. Despite numerous phylogenetic studies only one DNA-sequence based population-genetic study of N. aperta had been published, and the origin, structure and persistence of N. aperta were poorly understood. Consequently, a phylogenetic and population genetic study was performed, with addition of new data to pre-existing DNA-sequences for N. aperta from remote and inaccessible habitats, including one new taxon from Laos and 505 bp of additional DNA-sequence for all sampled taxa,.Principal findingsSpatial Principal Component Analysis revealed the presence of significant spatial-genetic clustering. Genetic-distance-based clustering indicated four populations with near perfect match to a priori defined ecogeographical regions. Spring-dwelling taxa were found to form an ecological isolate relative to other N. aperta. The poor dispersal capabilities suggested by spatial-genetic analyses were confirmed by Bayesian inference of migration rates. Population divergence time estimation implied a mid-Miocene colonisation of the present range, with immediate and rapid radiation in each ecogeographical region. Estimated effective population sizes were large (120–310 thousand).ConclusionsThe strong spatial-genetic structure confirmed the poor dispersal capabilities of N. aperta—suggesting human-mediated reintroduction of disease to controlled areas as the primary reason for control failure. The isolation of the spring-dwelling taxa and ecogeographical structure suggests adaptation of sub-populations to different habitats; the epidemiological significance of this needs investigation. The large effective population sizes indicate that the high population densities observed in surveyed habitats are also present in inaccessible areas; affording great potential for recrudescence driven by animal-reservoir transmission in remote streams. Mid-Miocene colonisation implies heterochronous evolution of these snails and associated schistosomes and suggests against coevolution of snail and parasite. Heterochronicity favours ecological factors as shapers of host-parasite specificity and greater potential for escape from schistosomiasis control through host-switching.

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The Increase of Exotic Zoonotic Helminth Infections

Gordon

McManus

Jones

et al. 2016

Advances in Parasitology

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A New Population and Habitat for Neotricula aperta in the Mekong River of Northeastern Thailand: A DNA Sequence-Based Phylogenetic Assessment Confirms Identifications and Interpopulation Relationships

Cited by 6 publications

References 11 publications

Snail-borne parasitic diseases: an update on global epidemiological distribution, transmission interruption and control methods

Snail-borne parasitic diseases: an update on global epidemiological distribution, transmission interruption and control methods

Population genetic structure and geographical variation in Neotricula aperta (Gastropoda: Pomatiopsidae), the snail intermediate host of Schistosoma mekongi (Digenea: Schistosomatidae)

The Increase of Exotic Zoonotic Helminth Infections

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