Results 171 to 180 of about 2,360 (212)
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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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Effects of copper on the survival, hatching, and reproduction of a pulmonate snail (Physa acuta)
Chemosphere, 2017Acute and chronic bioassays provide essential basis for establishment of environmental quality standards. The effects of Cu on a pulmonate snail, Physa acuta, were investigated at a number of sublethal and lethal endpoints. Cu exposure suppressed movement and triggered an escape response in P.
Debra Gonzago +4 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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Effects of different ionic compositions on survival and growth of Physa acuta
Aquatic Ecology, 2007Most inland saline waters in southern Australia predominantly contain Na+ and Cl− as major ions. The proportions of Ca2+, Mg2+, SO4 2−, HCO3 − and CO3 2− in these waters somewhat vary and might influence salinity tolerance of freshwater organisms.
Liliana Zalizniak +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.
Philippe Jarne +2 more
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Effect of Gamma Irradiation on the Reproductive System of the Pond Snail Physa acuta
Radiation Research, 1984Changes in the survival rate in adults and embryos of the pond snail Physa acuta were studied after acute whole-body gamma irradiation. The LD50 value of the adult snails was about 40 kR. The LD50 values of the embryos irradiated 0 and 1 day after oviposition were about 0.9 and 2 kR, respectively.
Saori Fujita, Nobuo Egami
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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.
Stefan Stoll +4 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.
Stefan Stoll +4 more
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The influence of TCS on the growth and behavior of the freshwater snail,Physa acuta
Journal of Environmental Science and Health, Part A, 2012Triclosan (TCS) is among the top 10 most persistent contaminants found in U.S. rivers, streams, lakes, and aquifers. Although TCS has not been found to be hazardous to humans, it can be toxic to aquatic environments and animals. The effects of TCS on growth rates and the locomotive behavior of the freshwater snail, Physa acuta, were studied by exposing
Melody J. Bernot +2 more
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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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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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