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Sottospecie
Sono state individuate 4 sottospecie:
- Lymnaea stagnalis adpressa
- Lymnaea stagnalis jugularis
- Lymnaea stagnalis sanctaemariae
- Lymnaea stagnalis stagnalis

Video
Qui il video della stagnalis nel suo ambiente naturale: http://www.youtube.com/watch?v=WNG3N2IPgZE
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La stagnalis e la genetica

Questa specie di gasteropode viene usato da decenni in numerosi studi in campo molecolare, cellulare e soprattutto nella branca della neurobiologia, dove è stata di grande aiuto nelle scoperta e nell’identificazione di particolari meccanismi concernenti i neuroni.

Articolo tratto da Wikipedia: http://en.wikipedia.org/wiki/Lymnaea_stagnalis

“Lymnaea stagnalis is widely used for the study learning, memory and neurobiology.
Lymnaea stagnalis has a relatively simple central nervous system (CNS) consisting of a total of ~20,000 neurons, many of them individually identifiable, organized in a ring of interconnected ganglia. Most neurons of the Lymnaea stagnalis central nervous system are large in size (diameter: up to ~100 μm), thus allowing electrophysiological dissection of neuronal networks that has yielded profound insights in the working mechanisms of neuronal networks controlling relatively simple behaviors such as feeding, respiration, locomotion, and reproduction. Studies using the central nervous system ofLymnaea stagnalis as a model organism have also identified novel cellular and molecular mechanisms in neuronal regeneration, synapse formation, synaptic plasticity, learning and memory formation, the neurobiology of development and aging, the modulatory role of neuropeptides, and adaptive responses to hypoxic stress.“

Foto sistema nervosa della stagnalis, particolare dell’anello centrale gangliare

http://s1.postimage.org/BLZb0.jpg

Autori: Z-P. Feng, Z. Zhang, R. E. van Kesteren, V. A. Straub, P. van Nierop, K. Jin, N. Nejatbakhsh, J. I. Goldberg, G. E. Spencer, M. S. Yeoman, W. Wildering, J. R. Coorssen, R. P. Croll, L. T. Buck, N. I. Syed & A. B. Smit

Qui invece posto l’introduzione di un sito a lei dedicato: "The freshwater large pond snail Lymnaea stagnalis (Mollusca, Pulmonata, Basommatophora, Lymnaeidae) has been a very useful model for studies in molecular, cellular, developmental and behavioral neurobiology, especially in the field of neuronal regeneration of the central nervous system, synapse formation and synaptic plasticity. It offers large and individually identifiable neurons. Decades of a wide spectrum of research has yielded profound insights in the working mechanisms of the neuronal networks controlling feeding, respiration, locomotion, and reproduction. These networks have been mapped electrophysiologically, biochemically and behaviorally. Currently ~30 laboratories use Lymnaea stagnalis as a model for independent research, generating ~1500 publications from 1986 to 2006. A serious drawback in the molecular analysis of Lymnaea stagnalis and related mollusks has been the lack of adequate genomic information, thereby limiting the usage of this unique model largely beyond its potential.

Our Lymnaea sequencing consortium has initiated a pilot sequencing project of a normalized cDNA library constructed from a Central Nervous System (CNS) regeneration model of Lymnaea stagnalis since 2006. We anticipate that the success of this project will result in a cDNA sequencing database, and in turn potentially lead to a genomic sequencing project of Lymnaea stagnalis. We believe that our initiatives will benefit not only the neuroscience community, but also comparative and evolutionary biology, marine biology and the pharmaceutical industry.

Please contact us if you are interested in the sequencing project. Thank you."

Qui il link: http://www.lymnaea.org/