Results 41 to 50 of about 5,512 (170)

New field observations on the competitive displacement between two species of planorbid snails inhabiting Northeastern Brasil

open access: yesMemorias do Instituto Oswaldo Cruz, 1981
Observations reported in the present paper have shown that Biomphalaria glabrata is being gradually displaced by B. straminea in coastal areas of two counties on the state of Pernambuco, Brazil, confirming former observations made in the same region ...
F. S. Barbosa   +2 more
doaj   +1 more source

A fine‐scale phylogenetic assessment of digenean trematodes in central Alberta reveals we have yet to uncover their total diversity

open access: yesEcology and Evolution, Volume 9, Issue 6, Page 3153-3238, March 2019., 2019
This manuscript represents a large, single, collective examination of larval trematodes from snail hosts, using molecular markers and phylogenetic methods. We contribute 1,091 mitochondrial sequences (cox1 and nad1) that represent 79 species from 23 genera and eight families.
Michelle A. Gordy, Patrick C. Hanington
wiley   +1 more source

Use of Molecular Methods for the Rapid Mass Detection of Schistosoma mansoni (Platyhelminthes: Trematoda) in Biomphalaria spp. (Gastropoda: Planorbidae)

open access: yesJournal of Tropical Medicine, Volume 2017, Issue 1, 2017., 2017
The low stringency‐polymerase chain reaction (LS‐PCR) and loop‐mediated isothermal amplification (LAMP) assays were used to detect the presence of S. mansoni DNA in (1) Brazilian intermediate hosts (Biomphalaria glabrata, B. straminea, and B. tenagophila) with patent S. mansoni infections, (2) B. glabrata snails with prepatent S. mansoni infections, (3)
Roberta Lima Caldeira   +3 more
wiley   +1 more source

Characterization of South American Snails of the Genus Biomphalaria (Basommatophora: Planorbidae) and Schistosoma mansoni (Platyhelminthes: Trematoda) in Molluscs by PCR‐RFLP

open access: yesBioMed Research International, Volume 2016, Issue 1, 2016., 2016
The identification of snails of the genus Biomphalaria can be done using morphological characteristics which depends on the size of the snails and skill and knowledge of researcher. These methods sometimes are not adequate for identification of species.
Roberta Lima Caldeira   +6 more
wiley   +1 more source

Evaluation of Toxic, Cytotoxic, Mutagenic, and Antimutagenic Activities of Natural and Technical Cashew Nut Shell Liquids Using the Allium cepa and Artemia salina Bioassays

open access: yesBioMed Research International, Volume 2015, Issue 1, 2015., 2015
The cashew nut releases a substance that is known as cashew nut shell liquid (CNSL). There are both natural (iCNSL) and technical (tCNSL) cashew nut shell liquids. This study used an Artemia salina bioassay to evaluate the toxic effects of iCNSL and tCNSL cashew nut shell liquids.
Aracelli de Sousa Leite   +9 more
wiley   +1 more source

Metacercarial Infection of Wild Nile Tilapia (Oreochromis niloticus) from Brazil

open access: yesThe Scientific World Journal, Volume 2014, Issue 1, 2014., 2014
Fingerlings of Oreochromis niloticus collected in an artificial urban lake from Belo Horizonte, Minas Gerais, Brazil, were evaluated for natural infection with trematodes. Morphological taxonomic identification of four fluke species was performed in O. niloticus examined, and the total prevalence of metacercariae was 60.7% (37/61).
Hudson A. Pinto   +3 more
wiley   +1 more source

Susceptibility of Argentinean Biomphalaria tenagophila and Biomphalaria straminea to infection by Schistosoma mansoni and the possibility of geographic expansion of mansoni schistosomiasis [PDF]

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 2013
Human migration and the presence of natural vectors (mollusks) of Schistosoma mansoni are the primary causes of the expansion of mansoni schistosomiasis into southern areas of South America. Water conditions are favorable for the expansion of this disease because of the extensive hydrographic network, which includes the basins of the Paraná and Uruguay
Simoes, Luciana Franceschi   +6 more
openaire   +5 more sources

Interaction of Schistosoma mansoni Sporocysts and Hemocytes of Biomphalaria

open access: yesJournal of Parasitology Research, Volume 2012, Issue 1, 2012., 2012
Human infection by Schistosoma mansoni affects more than 100 million people worldwide, most often in populations of developing countries of Africa, Asia, and Latin America. The transmission of S. mansoni in human populations depends on the presence of some species of Biomphalaria that act as an intermediate host. The compatibility between S.
D. Negrão-Corrêa   +5 more
wiley   +1 more source

Biomphalaria kuhniana (Clessin, 1883), planorbid mollusc from South America Biomphalaria kuhniana (Clessin, 1883), molusco planorbídeo da América do Sul

open access: yesMemorias do Instituto Oswaldo Cruz, 1988
The validity of Biomphalaria kuhniana (Clessin, 1883) is confirmed through morphological study of specimens from Surinam (type locality) and the area of Tucurui (Tocantins river, state of Pará, Brazil) in comparison with B.
W. Lobato Paraense
doaj   +1 more source

Use of Indicator Kriging to Investigate Schistosomiasis in Minas Gerais State, Brazil

open access: yesJournal of Tropical Medicine, Volume 2012, Issue 1, 2012., 2012
Geographic Information Systems (GISs) are composed of useful tools to map and to model the spatial distribution of events that have geographic importance as schistosomiasis. This paper is a review of the use the indicator kriging, implemented on the Georeferenced Information Processing System (SPRING) to make inferences about the prevalence of ...
Ricardo J. P. S. Guimarães   +8 more
wiley   +1 more source

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