Results 21 to 30 of about 31,696 (245)

Influence of Water Temperature on the MXR Activity and P-glycoprotein Expression in the Freshwater Snail, Physa acuta (Draparnaud, 1805) [PDF]

open access: yes, 2017
P-glycoprotein (P-gp) mediated multixenobioticresistance (MXR) is a mechanism analogous to multidrug resistance, which has been extensivelycharacterized in mammalian tumours.
Assef, Yanina Andrea   +1 more
core   +1 more source

PHYSID SNAILS AS SENTINELS OF FRESHWATER NEMATOMORPHS

open access: yesJournal of Parasitology, 2001
Freshwater nematomorphs, or gordiids, are parasitic as larvae, but free-living in aquatic environments as adults. Studies based on the collection of adults have reported gordiids to be widespread, but discontinuous in distribution. However, a relatively short adult life span and unknown life history make the detection of adults difficult.
Hanelt, Ben   +2 more
openaire   +3 more sources

ENVIRONMENTAL STRESS AND THE MAINTENANCE OF SEX IN A FRESHWATER SNAIL [PDF]

open access: yesEvolution, 1998
Synergism among mutations can lead to an advantage to sexual reproduction, provided mutation rates are high enough (the mutational deterministic hypothesis). Here we tested the idea that competition for food can increase the advantage to sexual reproduction, perhaps by increasing the synergism among mutations in asexual individuals.
Curtis M, Lively   +3 more
openaire   +2 more sources

Isolation and characterization of the full-length cDNA encoding a member of a novel cytochrome p450 family (CYP320A1) from the tropical freshwater snail, Biomphalaria glabrata, intermediate host for Schistosoma mansoni [PDF]

open access: yes, 2005
Cytochrome p450s (cyp450s) are a family of structurally related proteins, with diverse functions, including steroid synthesis and breakdown of toxins. This paper reports the full-length sequence of a novel cyp450 gene, the first to be isolated from the ...
Altschul SF   +17 more
core   +5 more sources

Dataset for the proteomic and transcriptomic analyses of perivitelline fluid proteins in Pomacea snail eggs [PDF]

open access: yes, 2017
This article describes how the proteomic and transcriptomic data were produced during a study of the reproductive proteins of Pomacea maculata, an aquatic apple snail laying colorful aerial eggs, and provides public access to the data.
Chu, Ka Hou   +4 more
core   +6 more sources

Toxicity of Metals to a Freshwater Snail,Melanoides tuberculata [PDF]

open access: yesThe Scientific World Journal, 2012
Adult freshwater snailsMelanoides tuberculata(Gastropod, Thiaridae) were exposed for a four-day period in laboratory conditions to a range of copper (Cu), cadmium (Cd), zinc (Zn), lead (Pb), nickel (Ni), iron (Fe), aluminium (Al), and manganese (Mn) concentrations.
M. Shuhaimi-Othman   +2 more
openaire   +3 more sources

Effects of water temperature on summer periphyton biomass in shallow lakes: a pan-European mesocosm experiment [PDF]

open access: yes, 2015
Periphyton communities play an important role in shallow lakes and are controlled by direct forces such as temperature, light, nutrients, and invertebrate grazing, but also indirectly by planktivorous fish predation.
Adrian, Rita   +9 more
core   +1 more source

Aquatic polymers can drive pathogen transmission in coastal ecosystems. [PDF]

open access: yes, 2014
Gelatinous polymers including extracellular polymeric substances (EPSs) are fundamental to biophysical processes in aquatic habitats, including mediating aggregation processes and functioning as the matrix of biofilms.
Conrad, Patricia A   +6 more
core   +1 more source

Clonal diversity driven by parasitism in a freshwater snail [PDF]

open access: yesJournal of Evolutionary Biology, 2013
AbstractOne explanation for the widespread abundance of sexual reproduction is the advantage that genetically diverse sexual lineages have under strong pressure from virulent coevolving parasites. Such parasites are believed to track common asexual host genotypes, resulting in negative frequency‐dependent selection that counterbalances the population ...
Dagan Y.   +3 more
openaire   +3 more sources

Invasive alien freshwater snail species in the Kruger National Park, South Africa

open access: yesKoedoe: African Protected Area Conservation and Science, 2008
An account is given of all invasive alien freshwater snail species samples found in the Kruger National Park currently on record in the National Freshwater Snail Collection(NFSC) database. This report mainly focuses on samples collected during surveys of
Kenné N. De Kock   +1 more
doaj   +1 more source

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