Results 41 to 50 of about 1,724 (190)

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

Endosymbiotic and host proteases in the digestive tract of the invasive snail Pomacea canaliculata: diversity, origin and characterization [PDF]

open access: yes, 2013
Digestive proteases of the digestive tract of the apple snail Pomacea canaliculata were studied. Luminal protease activity was found in the crop, the style sac and the coiled gut and was significantly higher in the coiled gut.
Castro-Vazquez, Alfredo   +2 more
core   +5 more sources

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

Crescimento individual de Drepanotrema cimex (Moricand, 1839) (Pulmonata, Planorbidae) de Arenalcito, Reserva Natural de Usos Múltiples “Isla Martín García”, Argentina [PDF]

open access: yes, 2013
The species of the genus Drepanotrema, most of them endemic to the Neotropical region, belong to the Planorbidae. Of the nine species of this genus, six are found in Argentina.
Díaz, Ana Carolina   +2 more
core   +4 more sources

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

Intercontinental distributions, phylogenetic position and life cycles of species of Apharyngostrigea (Digenea, Diplostomoidea) illuminated with morphological, experimental, molecular and genomic data [PDF]

open access: yes, 2021
When subjected to molecular study, species of digeneans believed to be cosmopolitan are usually found to consist of complexes of species with narrower distributions. We present molecular and morphological evidence of transcontinental distributions in two
Achinelly, María Fernanda   +10 more
core   +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

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

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