Results 211 to 220 of about 2,779 (250)
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Comparative Assessment of Cadmium and Copper Toxicity to Physa acuta (Draparnaud, 1805)
Bulletin of Environmental Contamination and Toxicology, 2021Cadmium and copper toxicity was investigated using bioassays with neonates of a freshwater gastropod Physa acuta. Mortality, lethal time, and effects on shell length were studied during 28-day chronic exposure experiments. Relative toxicity was assessed from acute and chronic LC values.
Emiliano Bálsamo Crespo +1 more
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Physa natricina Taylor 1988, junior synonym of Physa acuta Draparnaud, 1805 (Pulmonata: Physidae)
Zootaxa, 2007Physa natricina Taylor, 1988 is reported as a narrow range endemic species from the Snake River in Idaho, USA and is currently protected under the federal Endangered Species Act. We examined all available type material as well as more than 1,500 specimens of Physa collected from the Snake River and adjacent areas over the past twelve years and compared
D. CHRISTOPHER ROGERS, AMY R. WETHINGTON
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Maternal effects, paternal effects, and their interactions in the freshwater snail Physa acuta
Oecologia, 2023Individuals exposed to predation risk can produce offspring with altered phenotypes. Most work on predation-induced parental effects has focused on maternal effects or on generalized parental effects where both parents are exposed to risk. We conducted an experiment to measure and compare maternal and paternal effects on offspring phenotypes and test ...
Scott R. Goeppner +4 more
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Aquatic Sciences, 2016
Biological invasion represents one of the major threats to global biodiversity as alien species often displace indigenous species. Knowledge of the mechanisms behind such displacements and the driving factors of the competitive superiority of the alien species remain limited.
Früh, Denise +2 more
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Biological invasion represents one of the major threats to global biodiversity as alien species often displace indigenous species. Knowledge of the mechanisms behind such displacements and the driving factors of the competitive superiority of the alien species remain limited.
Früh, Denise +2 more
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Microsatellite variation in the freshwater snail Physa acuta
Molecular Ecology Notes, 2002AbstractWe present data for seven new markers isolated from a microsatellite‐enriched DNA library from the freshwater snail Physa acuta. Six of them appear to be conserved in Physa cubensis. These loci might be useful for analysing population structure and reconstructing the story of invasion of freshwaters on a worldwide scale by P. acuta.
P. Sourrouille, C. Debain, P. Jarne
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Utilização do gastrópode aquático Physa acuta em ensaios in situ
Revista Captar: Ciência e Ambiente para Todos, 2019Os ensaios in situ constituem uma ferramenta efetiva e ambientalmente relevante de avaliação de efeitos ecotoxicológicos, permitindo estabelecer relações causa-efeito em ambientes aquáticos sujeitos a vários agentes de stress. Entre as várias espécies aquáticas utilizadas neste tipo de testes, o gastrópode Physa acuta assume-se como um potencial ...
J. Saraiva, Maria +6 more
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Three morphogenetic waves in early development of Physa acuta (gastropoda, pulmonata)
Cell Biology International Reports, 1985Evidence is presented that there are three morphogenetic waves in early development of Physa acuta: a) around 24-cell stage, b) at early gastrula, and c) at early trochophore, using a proflavin biological test. These morphogenetic maxima fit very well with three transcriptional maxima.
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1906
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Multiple unfolding states of glutathione transferase from Physa acuta (Gastropada: Physidae)
Biochemical and Biophysical Research Communications, 2006The equilibrium unfolding of the major Physa acuta glutathione transferase isoenzyme (P. acuta GST(3)) has been performed using guanidinium chloride (GdmCl), urea, and acid denaturation to investigate the unfolding intermediates. Protein transitions were monitored by intrinsic fluorescence. The results indicate that unfolding of P.
Abdel-Monem Abdalla, Ragaa R. Hamed
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Identification and characterization of a goose-type lysozyme from sewage snail Physa acuta
Fish & Shellfish Immunology, 2014Freshwater snail Physa acuta has been considered as an important invasive species and medical mollusc. Field investigation has shown that this snail could survive better than other snails in polluted water bodies. To understand the immune mechanisms of P. acuta, suppression subtractive hybridization hepatopancreas cDNA library has been constructed with
Yunhai, Guo, Hongxuan, He
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