نتایج جستجو برای: lymnaea

تعداد نتایج: 1134  

Journal: :The Journal of experimental biology 2013
Jun Murakami Ryuichi Okada Yutaka Fujito Manabu Sakakibara Ken Lukowiak Etsuro Ito

Insulin's action in the brain can directly alter cognitive functioning. We have recently shown that molluscan insulin-related peptides are upregulated following a conditioned taste aversion (CTA) training procedure. In addition, when mammalian insulin is superfused over the isolated Lymnaea stagnalis central nervous system, it elicits long-term synaptic enhancement at the monosynaptic connectio...

Journal: :The Journal of experimental biology 2010
P A C M de Boer R F Jansen A Ter Maat N M van Straalen J M Koene

Many animals are equipped with organs that can be everted, a notable example being male copulatory organs. The ability to protrude or evert an organ generally requires protractor and retractor muscles. Male copulatory behaviour of the pond snail Lymnaea stagnalis (L.) involves eversion (protraction) and retraction of the relatively large penis-carrying organ. For this preputium, protractor and ...

2005
C. R. MCCROHAN

Four identified neurone types (CV3, 7, 5 and 6), located in the ventral cerebral ganglia of Lymnaea stagnalis, are described. These cells have axonal projections in one or more of the nerves innervating the lips. In addition, they show rhythmic synaptic inputs leading to strong burst activity in phase with cyclic output from the buccal ganglia, suggesting a role in the control of the oral apert...

2007
JORIS M. KOENE ANDRIES TER MAAT A. Ter Maat

Body size can be a good indicator of the quality of a potential mate in terms of fecundity. In many hermaphrodites, egg production is positively correlated with body size. Especially when donating sperm is costly, a preference for larger partners might be expected. Here we test this prediction for the great pond snail Lymnaea stagnalis. As expected, we find a clear effect of body size on egg pr...

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 1977

Journal: :Zeitschrift fur Naturforschung. Section C, Biosciences 1977
A Keim

First, experiments were tested for a new method concerning analyses of crop contents in liquosomatophagous animals. Disc-electrophoretic separations of the crop contents of Helobdella stagnalis yielded protein patterns typical for the number of bands and for the relative mobilities in these Chironomid larvae, on which H. stagnalis were fed. Additionally, slowly migrating bands occurred in the s...

2014
Gabriel O. Dida Frank B. Gelder Douglas N. Anyona Ally-Said Matano Paul O. Abuom Samson O. Adoka Collins Ouma Canisius K. Kanangire Phillip O. Owuor Ayub V. O. Ofulla

We purposively selected 39 sampling sites along the Mara River and its two perennial tributaries of Amala and Nyangores and sampled snails. In addition, water physicochemical parameters (temperature, turbidity, dissolved oxygen, conductivity, alkalinity, salinity and pH) were taken to establish their influence on the snail abundance and habitat preference. Out of the 39 sites sampled, 10 (25.6%...

2012
Selvan Bavan Volko A. Straub Tania E. Webb Steven J. Ennion

P2X receptors are membrane ion channels gated by extracellular ATP. Mammals possess seven distinct P2X subtypes (P2X1-7) that have important functions in a wide array of physiological processes including roles in the central nervous system (CNS) where they have been linked to modulation of neurotransmitter release. We report here the cloning and functional characterization of a P2X receptor fro...

Journal: :The Journal of experimental biology 2017
Emily Hughes Tamila Shymansky Erin Swinton Kai S Lukowiak Cayley Swinton Hiroshi Sunada Amy Protheroe Iain Phillips Ken Lukowiak

Stress alters the ability to form, recall and maintain memory according to the Yerkes-Dodson/Hebb (YDH) law. The effects of environmentally relevant stressors, such as low environmental calcium and crowding, on learning and memory have previously been described in a laboratory-reared 'average' strain of Lymnaea stagnalis (i.e. the Dutch strain) as well as two strains of freshly collected L. sta...

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