Electron microscopical and histochemical observations on the relation between medio-dorsal bodies and neurosecretory cells in the basommatophoran snails Lymnaea stagnalis, Ancylus fluviatilis, Australorbis glabratus and Planorbarius corneus

1968 ◽  
Vol 87 (3) ◽  
pp. 435-450 ◽  
Author(s):  
H. H. Boer ◽  
J. W. Slot ◽  
J. Andel
Keyword(s):  
Lymnaea Stagnalis ◽  
Neurosecretory Cells ◽  
Planorbarius Corneus ◽  
Electron Microscopical

scholarly journals Furcocercous cercariae (Trematoda) from freshwater snails in Central Finland

2007 ◽  
Vol 52 (4) ◽  
Author(s):  
Anna Faltýnková ◽  
Katarzyna Niewiadomska ◽  
Maria Santos ◽  
E. Valtonen
Keyword(s):  
New Species ◽  
Lymnaea Stagnalis ◽  
Host Record ◽  
Freshwater Snails ◽  
Snail Species ◽  
Planorbarius Corneus ◽  
Larval Stages ◽  
Diplostomum Pseudospathaceum

AbstractA total of eight species of furcocercous cercariae of four families (Strigeidae, Diplostomidae, Schistosomatidae and Sanguinicolidae), were found in 2005 in Lake Konnevesi in Central Finland in four snail species (Valvata macrostoma, Lymnaea stagnalis, Bathyomphalus contortus and Planorbarius corneus). Australapatemon burti (Miller, 1923), Australapatemon sp., Cotylurus brevis Dubois et Rausch, 1950, Cercaria spinulosa Ginetsinskaya, 1959 and Sanguinicola sp. are new species records for Finland. Ichthyocotylurus variegatus (Creplin, 1825) and Bilharziella polonica (Kowalewski, 1895) were first recorded as cercariae in Finland. The most common cercariae were A. burti (prevalence 13.3%) and Diplostomum pseudospathaceum Niewiadomska, 1984 (10.0%). Our study represents the first host record of Valvata macrostoma for larval stages of Australapatemon sp. and Sanguinicola sp.

scholarly journals The gastropod parasitic nematode Phasmarhabditis hermaphrodita does not affect non-target freshwater snails Lymnaea stagnalis, Bithynia tentaculata and Planorbarius corneus

Nematology ◽  
2015 ◽  
Vol 17 (6) ◽  
pp. 679-683 ◽  
Author(s):  
Gemma Whitaker ◽  
Robbie Rae
Keyword(s):  
Parasitic Nematode ◽  
Lymnaea Stagnalis ◽  
Biological Control Agent ◽  
Freshwater Snail ◽  
Control Agent ◽  
Snail Species ◽  
Planorbarius Corneus ◽  
Bithynia Tentaculata ◽  
In The Wild ◽  
Phasmarhabditis Hermaphrodita

Phasmarhabditis hermaphrodita is a lethal parasite of several slug and snail species that has been formulated into a biological control agent. However, the complete host range of this nematode is poorly understood, in particular its potential to affect non-target aquatic snail species. Here we exposed three species of juvenile and adult freshwater snail (Lymnaea stagnalis, Planorbarius corneus and Bithynia tentaculata) to 30 and 150 P. hermaphrodita cm−2 and assessed survival, as well as differences in weight for 66 days. We show that P. hermaphrodita has no effect on the survival of L. stagnalis, P. corneus and B. tentaculata after 66 days of exposure. In summary, we found little evidence of P. hermaphrodita causing mortality to three freshwater snail species at two different life stages and believe that P. hermaphrodita would have little effect on non-target snail species in the wild.

scholarly journals Changes in neuronal ionic currents after extracellular and intracellular administration of afobazol and bupivacaine

2014 ◽  
Vol 12 (3) ◽  
pp. 50-55 ◽  
Author(s):  
Anatoliy Ivanovich Vislobokov ◽  
Konstantin Nikolayevich Melnikov ◽  
Petr Dmitriyevich Shabanov
Keyword(s):  
Local Anesthetic ◽  
Lymnaea Stagnalis ◽  
External Surface ◽  
Ionic Currents ◽  
Neuronal Membrane ◽  
Isolated Neurons ◽  
Inhibition Effect ◽  
Planorbarius Corneus ◽  
Pharmacological Targets

The action of anxiolytic afobazol (2-mercaptobenzimidazolum derivative) in concentration 1 mM and local anesthetic bupivacaine in concentrations 0,5-1 mM on ionic currents of isolated neurons of Lymnaea stagnalis and Planorbarius corneus was studied. The method of intracellular dialysis was used in the experiment. Afobazol and bupivacaine after intracellular administration was shown not to possess their inhibition effect of ionic currents, typical for extracellular administration of drugs. It is suggested that pharmacological targets or bindind sits for these drugs are located on external surface of neuronal membrane.

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