Results 151 to 160 of about 945 (176)

The Inheritance of Albinism in a Freshwater Snail, Physa heterostropha

Journal of Heredity, 1992
Complementation tests revealed that albinism in four laboratory strains of Physa (Physella) heterostropha pomilia resulted from two recessive, nonallelic genes. F2 dihybrid progeny displayed the 9:7 ratio classically associated with reciprocal recessive epistasis between unlinked loci.
R T, Dillon, A R, Wethington
openaire   +2 more sources

Temperature drives asymmetric competition between alien and indigenous freshwater snail species, Physa acuta and Physa fontinalis

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, Haase, Peter, Stoll, Stefan   +2 more
openaire   +1 more source

Reproduction in Physa pomilia and Helisoma duryi

Animal Behaviour, 1959
Abstract On the basis of available information, the Lymnaeidae and Physidae are capable of reproducing through self-fertilisation; the Planorbidae are less successful. Although the first two lamilies mentioned can reproduce in this manner the data indicate that this is not likely to be the general mode of reproduction since cross-copulation and hence
Robert M. DeWitt, William C. Sloan
openaire   +1 more source

Trematode Community Structure in the Pulmonate Snail Physa gyrina

The Journal of Parasitology, 1993
Trematode community structure was examined in the pulmonate snail Physa gyrina over a 12-mo period. A total of 1,181 snails was collected from Charlie's Pond, North Carolina, and was found to be parasitized by 6 trematode species. Infracommunities were relatively species rich when compared to previous studies, with 18.4% of infected snails having multi-
S D, Snyder, G W, Esch
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Glycolytic enzymes of the aquatic snail physa halei lea

Comparative Biochemistry and Physiology, 1963
Abstract 1. 1. The enzymes of the Embden-Meyerhof pathway and the initial reactions of the hexose monophosphate shunt were studied in cell-free preparations of the aquatic snail Physa halei Lea. 2. 2. Both glucose-6-phosphate dehydrogenase and 6-phosphogluconic dehydrogenase were demonstrated and found to resemble the mammalian enzymes in co ...
openaire   +2 more sources

physa, n.

2023
openaire   +1 more source

Occurrence and distribution of heavy metals in the tissues of Physa acuta (D.) in relation to the contamination level of sediments from Boumerzoug wadi (Algeria)

Environmental Forensics, 2023
Dounia Keddari, Leila Sahli, Fatima-Zohra Afri-Mehennaoui   +2 more
exaly  

Angucycline-like Aromatic Polyketide from a Novel Streptomyces Species Reveals Freshwater Snail Physa acuta as Underexplored Reservoir for Antibiotic-Producing Actinomycetes

Antibiotics, 2021
Nasim Safaei, Joachim Wink, Boyke Bunk   +2 more
exaly  

Identification of Bulinus and Physa

Transactions of the Royal Society of Tropical Medicine and Hygiene, 1954
openaire   +1 more source

The influence of TCS on the growth and behavior of the freshwater snail,Physa acuta

Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering, 2012
Randall Bernot, Melody J Bernot
exaly