Background: Two aspects need to be considered for schistosomiasis control: morbidity and transmission. In this context, many soluble substances have been tested and Euphorbia milii latex is one of the most promising Brazilian molluscicides. Phytochemical studies involving simulation of the applicability of this latex on all aquatic forms of the S. mansoni life cycle are rare in the literature. ...

What should a semantic theory for a language tell us? A traditional answer goes back at least to Frege and Russell: • The Static Conception of Semantics (Preliminary Version): A semantic theory should assign a proposition, conceived of as some carrier of meaning that can play the role of truth condition determination, to each (or at least each declarative) sentence. A competing answer has emerg...

Fluoxetine is a serotonin re-uptake inhibitor, generally used as an antidepressant. It is suspected to provoke substantial effects in the aquatic environment. This study reports the effects of fluoxetine on the life cycle of four invertebrate species, Daphnia magna, Hyalella azteca and the snail Potamopyrgus antipodarum exposed to fluoxetine spiked-water and the midge Chironomus riparius expose...

Zohra Ben Salem, Ayadi Habib Biodiversity and Aquatic Ecosystems UR/11ES72 Research Unit, Department of Life Sciences Research, Sfax Faculty of Sciences, University of Sfax, Street of Soukra Km 3.5 BP 1171-PO Box 3000 Sfax, Tunisia University of Franche-Comte, Chrono-Environnement Laboratory, UMR CNRS 6249 1, Place Leclerc, F-25030 Besançon, France Journal of Coastal Life Medicine 2016; 4(7):52...

his fact sheet provides a summary of a review by the CCME Soil Quality Guidelines Task Group (SQGTG) of the implications of propylene glycol (PG) releases to Canadian soil environments. Following a review of the releases, fate and effects of PG in soils, the SQGTG opted not to develop Canadian soil quality guidelines at this time. Nonetheless, releases of PG to the environment can pose serious ...

Changing conditions of life impose new requirements on the morphology and physiology of an organism. One of these changes is the evolutionary transition from aquatic to terrestrial life, leading to adaptations in locomotion, breathing, reproduction, and mechanisms for food capture. We have shown previously that insects' wings most likely originated from one of the gills of ancestral aquatic art...

According to [4], “Phenotypic plasticity is the ability of an organism to change its phenotype in response to changes in the environment. Such plasticity in some cases expresses as several highly morphologically distinct results; in other cases, a continuous norm of reaction describes the functional interrelationship of a range of environments to a range of phenotypes. The term was originally c...

The transition in the cetaceans from terrestrial life to a fully aquatic existence is one of the most enduring evolutionary mysteries. Resolving the phylogenetic relationships between Cetacea and the other orders of eutherian mammals may provide us with important clues to the origin of whales and may help us date the evolutionary transition to aquatic life. Previous paleontological and molecula...

The equilibrium concentration ratio is typically the parameter used to estimate organism activity concentrations within wildlife dose assessment tools. Whilst this is assumed to be fit for purpose, there are scenarios such as accidental or irregular, fluctuating, releases from licensed facilities when this might not be the case. In such circumstances, the concentration ratio approach may under-...