1. Temperature-dependent effects on respiratory behaviour as well as the corresponding temperature-dependent activities of identified neurons within the respiratory network of the pulmonate snail Lymnaea stagnalis were investigated. 2. Lymnaea lung ventilation terminated at low temperatures (under 10 1C) while temperature elevation increased ventilation rates. The respiratory central pattern ge...

We report here that unlike what was suggested for many vertebrate neurons, synaptic transmission in Lymnaea stagnalis occurs independent of a physical interaction between presynaptic calcium channels and a functional complement of SNARE proteins. Instead, synaptic transmission in Lymnaea requires the expression of a C-terminal splice variant of the Lymnaea homolog to mammalian N- and P/Q-type c...

Axotomized central neurons of most invertebrate species demonstrate a strong regenerative capacity, and as such may provide valuable molecular insights and new tools to promote axonal regeneration in injured mammalian neurons. In this study, we identified a novel molluscan protein, caltubin, ubiquitously expressed in central neurons of Lymnaea stagnalis and locally synthesized in regenerating n...

This paper describes the advantages of adopting a molluscan model for studying the biological basis of some central nervous system pathologies affecting humans. In particular, we will focus on the freshwater snail Lymnaea stagnalis, which is already the subject of electrophysiological studies related to learning and memory, as well as ecotoxicological studies. The genome of L. stagnalis has bee...

In this study, we demonstrate neural changes that occurred during operant conditioning of the aerial respiratory behavior of Lymnaea stagnalis. Aerial respiration in Lymnaea occurs at the water interface and is achieved by opening and closing movements of its respiratory orifice, the pneumostome. This behavior is controlled by a central pattern generator (CPG), the neurons of which, as well as ...

http://sro.sussex.ac.uk Cox, Kingsley J A, Tensen, Cornelis P, Van der Schors, Roel C, Li, Ka Wan, van Heerikhuizen, Harm, Vreugdenhil, Erno, Geraerts, Wijnand P M and Burke, Julian F (1997) Cloning characterisation and expression of a G-protein-couple receptor from Lymnaea stagnalis and identification of a leucokinin-like peptide PSFHSWSamide as its endogenous ligand. Journal of Neuroscience, ...

Central neurons of Lymnaea stagnalis exhibit, by the dne of a hyperpolarizing current pulse, a breaking-off of the rise of the membrane potential to the resting level. By using an electrical model of the membrane, this effect is accounted for by the activation of the fast outward current.

Aquatic ecosystems are exposed to multiple stressors such as agricultural run-off (ARO) and climate-change related increase of temperature. We aimed determine how ARO the frequency its input can affect shallow lake through direct indirect effects on primary producers consumers, whether warming mitigate or reinforce impact ARO. performed a set microcosm experiments simulating using cocktail thre...

The present work aimed at studying the effect of Ambrosia maritima (Damsissa) on the viability of Lymnaea snails. Lymnaea snails used in these trials were acclimatized to laboratory conditions before use in the toxicity test. The snails were exposed to various concentrations (100-3000 mg/l) of dry powdered Damsissa, Ambrosia maritima was lethal to Lymnaea snails at concentration of 3000 mg/L af...