Results 11 to 20 of about 2,470 (159)

Physa acuta Draparnaud, 1805 (Gastropoda: Physidae): a study of topotypic specimens [PDF]

open access: yesMemorias do Instituto Oswaldo Cruz, 2003
A description is given of Physa acuta Draparnaud, 1805, based on topotypic specimens from the Garonne river basin, and additional samples from the environs of the French cities of Montpellier and Perpignan.
W Lobato Paraense, Jean-Pierre Pointier
doaj   +4 more sources

Morphological and molecular identification of the invasive freshwater snail Physa acuta (Gastropoda: Physidae) into Llanquihue Lake, Chilean Patagonia [PDF]

open access: yesAnais da Academia Brasileira de Ciências, 2020
The sewage snail Physa acuta, native to North America, is an effective invasive species around the world. In Chile, it was first reported in 2014 in the north central area of the country.
GONZALO A. COLLADO   +5 more
doaj   +2 more sources

The evolution of reproductive isolation in a simultaneous hermaphrodite, the freshwater snail Physa [PDF]

open access: yesBMC Evolutionary Biology, 2011
Background The cosmopolitan freshwater snail Physa acuta has recently found widespread use as a model organism for the study of mating systems and reproductive allocation.
Lydeard Charles   +2 more
doaj   +3 more sources

Determination of the lethal doses LD50 and LD90 of Euphorbia splendens var. hislopii latex on Physa cubensis Pfeiffer

open access: yesRevista Ambiente & Água, 2012
The genus Physa are among the most common and widespread fresh-water snails and are frequently associated with the genus Lymnaea and Biomphalaria, typically occupying the same habitat and being hosts of trematodes that can cause disease in humans ...
Aloysio da Silva Ferrão Filho   +2 more
doaj   +2 more sources

Atração miraxonal exercida por Biomphalaria straminea, Lymnaea columella e Physa sp, sobre miracídios de Schistosoma mansoni da linhagem BH The miraxonal attraction exercised by Biomphalaria straminea, Lymnaea columella and Physa sp over miracidia of Schistosoma mansoni

open access: yesRevista de Saúde Pública, 1991
Utilizando-se um artefato de vidro composto de duas câmaras unidas por um canal, testamos a atração miraxonal exercida por Biomphalaria straminea, Lymnaea columella e Physa sp, sobre larvas de Schistosoma mansoni da linhagem BH.
Luiz A. Magalhães   +3 more
doaj   +2 more sources

Movement alterations of Physa gyrina when parasitized.

open access: yes, 2004
Physa gyrina are a common freshwater snail that serves as the intermediate host for many digenetic trematode parasites. For this study, Physa gyrina were collected from Alanson Ditch, Emmet County, Michigan, and put into a light box so that infected ...
Herstein, Richard J.
core   +7 more sources

Molecular Phylogenetics of Physa acuta (Pulmonata: Basommatophora): an Invasive species in Central Punjab Pakistan

open access: yesBrazilian Journal of Biology, 2021
Physids belong to Class Gastropoda; belong to Phylum Mollusca and being bioindicators, intermediate hosts of parasites and pests hold a key position in the ecosystem. There are three species of Genus Physa i.e. P. fontinalis, Physa acuta and P.
B. Ansari   +14 more
doaj   +1 more source

Spatial distribution of two invasive freshwater snails and environmental correlates of the mollusc community abundance, a case study in Chile

open access: yesAnimal Biodiversity and Conservation, 2023
Invasive species can produce negative effects on native species. We studied the densities of Physa acuta and Potamopyrgus antipodarum, two invasive freshwater snails in Chile, and analyzed the relationship between environmental parameters and the ...
G. A. Collado   +2 more
doaj   +1 more source

Molluscicidal activities of green-synthesized Alstonia congensis silver nanoparticles

open access: yesAsian Pacific Journal of Tropical Biomedicine, 2023
Objective: To evaluate the efficacy of Alstonia congensis green-synthesized nanoparticles as a molluscicide against snail hosts of trematodes. Methods: The ethanolic leaf extract of Alstonia congensis was used to synthesize silver nanoparticles.
Oyetunde T Oyeyemi   +4 more
doaj   +1 more source

Vodní měkkýši přírodních rezervací Žabakor, Podtrosecká údolí a Údolí Plakánek v CHKO Český ráj [PDF]

open access: yesMalacologica Bohemoslovaca, 2022
Aquatic molluscs of three extensive nature reserves (Žabakor, Podtrosecká údolí, Údolí Plakánek) in the Český ráj Protected Landscape Area (northern Bohemia) were studied in 2019.
Luboš Beran, Vendula Beranová
doaj   +1 more source

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