Distribution and habitat preferences of the genus Biomphalaria (Gastropoda: Planorbidae) in Cuba

Perera, Antonio Alejandro Vázquez; Noda, Jorge Sánchez; Jiménez, Yosvania Hevia

doi:10.1590/s0074-02762010000100005

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Similarly, Biomphalaria spp. are often found in lakes, reservoirs of dams, ditches, irrigation channels, fish ponds and rice fields [30,31]– all habitats in which N. aperta has not been found. In addition while the planorbid snails discussed here are associated with aquatic macrophytes, N. aperta is exclusively epilithic or epixylic (on rotting wood).…”

Section: Introductionmentioning

confidence: 99%

Observations on Neotricula aperta (Gastropoda: Pomatiopsidae) population densities in Thailand and central Laos: implications for the spread of Mekong schistosomiasis

Attwood

Upatham

2012

Parasites Vectors

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BackgroundThe snail Neotricula aperta transmits Mekong schistosomiasis in southern Laos and Cambodia, with about 1.5 million people at risk of infection. Plans are under consideration for at least 12 hydroelectric power dams on the lower Mekong river and much controversy surrounds predictions of their environmental impacts. Unfortunately, there are almost no ecological data (such as long term population trend studies) available for N. aperta which could be used in impact assessment. Predictions currently assume that the impacts will be the same as those observed in Africa (i.e., a worsening of the schistosomiasis problem); however, marked ecological differences between the snails involved suggest that region specific models are required. The present study was performed as an initial step in providing data, which could be useful in the planning of water resource development in the Mekong. Snail population density records were analyzed for populations close to, and far downstream of, the Nam Theun 2 (NT2) project in Laos in order to detect any changes that might be attributable to impoundment.ResultsThe population immediately downstream of NT2 and that sampled 400 km downstream in Thailand both showed a long term trend of slow growth from 1992 to 2005; however, both populations showed a marked decline in density between 2005 and 2011. The decline in Thailand was to a value significantly lower than that predicted by a linear mixed model for the data, whilst the population density close to NT2 fell to undetectable levels in 2011 from densities of over 5000 m-2 in 2005. The NT2 dam began operation in 2010.ConclusionsThe impact of the NT2 dam on N. aperta population density could be more complex than first thought and may reflect the strict ecological requirements of this snail. There was no indication that responses of N. aperta populations to dam construction are similar to those observed with Bulinus and Schistosoma haematobium in Africa, for example. In view of the present findings, more ecological data (in particular population density monitoring and surveillance for new habitats) are urgently required in order to understand properly the likely impacts of water resource development on Mekong schistosomiasis.

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Section: Introductionmentioning

confidence: 99%

Observations on Neotricula aperta (Gastropoda: Pomatiopsidae) population densities in Thailand and central Laos: implications for the spread of Mekong schistosomiasis

Attwood

Upatham

2012

Parasites Vectors

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“…Esta especie parece estar asociada a ambientes con abundante vegetación, y bajo estas condiciones sus poblaciones pueden alcanzar altas densidades. Un estudio realizado en Cuba por Vásquez-Perera et al (2010) muestra que B. pallida prefiere ambientes naturales, y raramente se observa en ambientes antrópicos. También encontraron que en los ríos, donde hidróbidos y tiáridos suelen habitar, son ambientes preferidos por B. pallida, y que ésta se encuentra bien establecida en ambientes donde suelen ser más comunes otros caracoles de las familias Lymnaeidae, Physidae y Ampullariidae.…”

Section: Resultsunclassified

“…Las especies fueron determinadas con base en el estudio de los caracteres morfológicos de la concha (forma, longitud y forma de la espira, abertura, forma del opérculo, forma y tamaño del ombligo, escultura de la concha), empleando a Pilsbry (1920), Harrison (1984), Lanzer (1996), Paraense & Pointier (2003), Vásquez et al (2010) y Nava et al (2011). Se calcularon índices de diversidad alfa (riqueza específica) y de equidad (índice de Simpson invertido) como indicadores de la estructura de la comunidad.…”

Section: Materials Y Métodosunclassified

Gasterópodos dulceacuícolas de Providencia, archipiélago de San Andrés, Providencia y Santa Catalina, Colombia

Cortés‐Guzmán

Linares

2016

AZM

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El presente estudio describe la composición de la comunidad de moluscos en varias quebradas de Providencia, y la dinámica de éstas en tres periodos hidrológicos. Se realizaron tres muestreos en cinco quebradas de la isla, donde se recolectaron los moluscos. Se calcularon índices y descriptores de la comunidad, se describió la dinámica de las especies con la estacionalidad de la precipitación de la isla y se establecieron las preferencias de microhábitats. Se encontraron cinco especies de moluscos dulceacuícolas, de las cuales cuatro no se habían reportado para la isla ni para el archipiélago. La dinámica estacional de la comunidad de moluscos principalmente dulceacuícolas mostró un aumento poblacional en todas las especies, excepto una, durante el periodo de lluvias, y un aumento en los valores de equidad. Los microhábitats cantos rodados y raíces, fueron los más notables, y se encontró que en los sitios con mayor número de microhábitats disponibles hay mayor abundancia de moluscos.

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RETRACTED: Diversity and Compatibility of Human Schistosomes and Their Intermediate Snail Hosts

Sanogo

Yuan

Zeng

et al. 2018

Trends in Parasitology

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Human schistosomiasis is a major neglected tropical disease that remains endemic in numerous countries of the tropics and subtropics. Controlling the transmission of schistosomes in their intermediate snail hosts remains a key challenge in the fight against schistosomiasis. Divergence in species, biogeography, and genotype in schistosomes and their intermediate hosts has resulted in diverse parasite-host interactions. This review focuses on recent insights in the biogeography and diversity of schistosome species and their snail hosts, and the molecular basis of compatibility polymorphism between them.

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Distribution and habitat preferences of the genus Biomphalaria (Gastropoda: Planorbidae) in Cuba

Cited by 3 publications

References 7 publications

Observations on Neotricula aperta (Gastropoda: Pomatiopsidae) population densities in Thailand and central Laos: implications for the spread of Mekong schistosomiasis

Observations on Neotricula aperta (Gastropoda: Pomatiopsidae) population densities in Thailand and central Laos: implications for the spread of Mekong schistosomiasis

Gasterópodos dulceacuícolas de Providencia, archipiélago de San Andrés, Providencia y Santa Catalina, Colombia

RETRACTED: Diversity and Compatibility of Human Schistosomes and Their Intermediate Snail Hosts

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