Results 21 to 30 of about 12,024 (277)

Invaders as Diluents of the Cercarial Dermatitis Etiological Agent [PDF]

open access: yesPathogens, 2021
Research on alien and invasive species focuses on the direct effects of invasion on native ecosystems, and the possible positive effects of their presence are most often overlooked.
Anna Stanicka   +6 more
doaj   +2 more sources

Ovoposició en poblacions de "Physa acuta" "(Gastropoda: Pulmonata)" mantingudes al laboratori [PDF]

open access: yesButlletí de la Institució Catalana d'Història Natural, 1981
The ovipositional parameter, number of egg masses/snailxday, has been recorded in laboratory-kept populations of Physa acuta in the period 1973-1975. The results show a clear non circadian rhythm with a period slightly over 3 days long, and whose extent ...
Vela i Fernàndez, Joan-Antoni
core   +2 more sources

Who eats whom? Interactions between the non-native snail Physa acuta, local digeneans, and a commensal oligochaete

open access: yesParasitology
Parasite transmission can be disrupted when their free-living larval stages are consumed by non-host organisms. Yet, the contribution of benthic scrapers to this process remains insufficiently explored. Here, we experimentally assessed the ability of the
Anna Stanicka   +8 more
doaj   +2 more sources

The effects of naproxen sodium on the growth, reproduction, survival, and feeding of a freshwater pond snail [PDF]

open access: yesPeerJ
Over-the-counter drugs are emerging contaminants in the environment. These contaminants often affect aquatic communities, including freshwater invertebrates. Nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly found in aquatic ecosystems worldwide
Rachel Becker, Elizabeth Hamman
doaj   +3 more sources

Ecological Observations of the Effects of Magnetized Water on the Fresh Water Snail Physa acuta (Draparnoud, 1805)

open access: goldBaghdad Science Journal
تعتبر قواقع المياه العذبة النوع Physa acuta  مهمة من الناحية البيئية  في المياه العذبة العراقية لكونه يشكل غذاءا مهما ضمن مكونات السلسلة الغذائية الطبيعية .
Q. A. A. Al-Ibady   +2 more
semanticscholar   +2 more sources

Invasive freshwater gastropods in South America: Physa acuta and its expansion to Austral Patagonia in Argentina

open access: diamondPapéis Avulsos de Zoologia
Physa acuta is a freshwater snail of North American origin that has spread to all continents. In South America it was detected for the first time in 1966 (Brazil) and is currently present in Argentina, Brazil, Peru, Chile, Colombia, Ecuador and Uruguay ...
D. E. Gutiérrez Gregoric   +4 more
semanticscholar   +3 more sources

Complex genetic determinism of male-fertility restoration in the gynodioecious snail Physa acuta

open access: yesbioRxiv
Male fertility in plants is often controlled by the interaction between mitochondrial and nuclear genes. Some mitotypes confer cytoplasmic male sterility (CMS), making the individual male-sterile, unless the nuclear background contains alleles called ...
Elpida Skarlou   +6 more
semanticscholar   +2 more sources

تأثير المياه المعالجة مغناطيسيا في صدفة قوقع المياه العذبة فايزا أكيوتا Physa acuta (Drapanoud, 1805)

open access: diamondمجلة مركز بحوث التقنيات الاحيائية, 2017
استعملت المياه المعالجة مغناطيسياً في العديد من المجالات البحثية والطبية والصناعية والزراعية وغيرها. لذا أجريت الدراسة الحالية للتعرف على تأثير المياه المعاملة مغناطيسياً وبشدد مختلفة وهي 500 و 1000 و 1500 غاوس في بعض الجوانب الحياتية لقوقع المياه ...
Qater Al-Nada Al-ibady   +2 more
doaj   +3 more sources

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