Science topic
Lymnaea - Science topic
A genus of dextrally coiled freshwater snails that includes some species of importance as intermediate hosts of parasitic flukes.
Questions related to Lymnaea
I have several photographs of what I believe to be a cercarial/redial stage of a digenean trematode inside the gonad of the freshwater snail Lymnaea sp. I am hoping that someone will be able to confirm this/provide further guidance as to the identification, as I am struggling to find appropriate resources! In both photographs, the (putative) trematode is ~300um long. Any advice much appreciated.
I need to dissect the the reproductive system from the snails but can't find any information/ protocol on how to dissect this species. Can anyone point me in the direction of somewhere that may have this information?
In our daily lab life we extract nucleic acids from vertebrate tissues or cell lines. For a candidates project we now want to extract small RNAs from snails early embryos (Lymnaea stagnalis). However, we found that it is very tricky to seperate the eggs from the jelly mass which we must remove prior to TRIZOL procedure. Any help would be appreciated.
As I understand it, the gastropod Genus: Stagnicola consists of 3 species in Western Europe, S. corvus, S. fuscus and S. palustris (the 3 were previously lumped together as Lymnaea palustris).
Contemporary literature seems confused as to whether S. corvus is a valid species and, if so, whether it is present in Britain, or that the British species are actually S. palustris and S. fuscus. Does anybody have any insight as to the true state of this taxonomy?
Lymnaea (Bulimnea) megasoma snails were captured in northern Minnesota and cercarial shedding induced by artificial illumination. Both cercariae shown here are from L. megasoma.
In the first attached image, the cercariae is a Strigea (Longifurcate-pharyngeate). Likely Diplostomum?
In the second attached image, the cercariae is an Armatae according to Schell 1985. Oral and ventral suckers present (ventral sucker is midventral despite being unclear in image), stylet present. (Apologies for poor quality, video upload failed.)
Identification to genus would be great, ID to family would still be useful.
Thanks,
Trevor
Recently, we when to the paddy field in early morning, about 6.30 am, to look for the freshwater snails. During observation, there were no Lymnaied snails was present there. Before this, studies have been done in that area, the liver fluke infection has occurred in cattle. But, still did not find the presence of snails that act as intermediate host for this disease.Therefore, we want to know when and where to find the snail intermediate host that causes liver fluke disease in cattle. Thanks.
Hi there, can somebody in the freshwater mollusc-world clarify the correct nomenclature for Lymnaea columella or Pseudosuccinea columella?
I see a bit of conflicting literature,so what is the latest or more agreed consensus?
Many thanks!
Biology and ecology that means the growth, reproduction, resistance to the negative environmental factors (elevated temperature, anthropogenic contamination, etc., and so on.
I would be very appreciated for it.
Sincerely yours,
prof. A.Golubev
I have done my sampling for feacal sample on cattle to see whether it has been infected by the liver fluke or not. And the result surprisingly shows that almost all the samples were positive to fascioliasis. But I found out there are many Melanoides tuberculata but no Lymnaea in the grazing area. I understand that M. tuberculata is the intermediate host for fish trematodes. Is there any relationship or interaction between M. tuberculata and fascioliasis?
Gasteropoda: Pulmonata , Lymnaeidae, Lymnaea
