snail identification workshop waterford july 2009
Download
Skip this Video
Download Presentation
Snail Identification Workshop Waterford July 2009

Loading in 2 Seconds...

play fullscreen
1 / 20

Snail Identification Workshop Waterford July 2009 - PowerPoint PPT Presentation


  • 108 Views
  • Uploaded on

Cepaea nemoralis. Snail Identification Workshop Waterford July 2009. Roy Anderson. What are snails?. Land snails belong to the Phylum Mollusca which includes snails, slugs, bivalves, squid and octopus

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Snail Identification Workshop Waterford July 2009' - tyra


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
what are snails
What are snails?
  • Land snails belong to the Phylum Mollusca which includes snails, slugs, bivalves, squid and octopus
  • Within the huge variety of molluscs there are a number of Classes: land snails belong to the Gastropoda or gastropods, literally mouth-foot animals because they crawl on a foot which contains the mouth
what are snails1
What are snails?
  • The gastropods in turn are made of animals with or without a thin, horny flap, the operculum, which closes off the shell aperture when the animal has retreated
  • Those with an operculum are the in Subclass Prosobranchia. Prosobranchsare mostly marine but we have 2 land snails, Acicula fusca and Pomatias elegans

Acicula fusca [point snail]- size 2.8mm

what are snails2
What are snails?
  • The remaining snails are in Subclass Pulmonata, the pulmonates
  • Pulmonates mostly have shells into which they retreat. Those that do not are slugs. We have two semi-slugs, Semilimax pyrenaicus and Vitrina pellucida, which cannot fully retreat into their shells

A semi-slug, Semilimax pyrenaicus

family key pictorial
Family Key[pictorial]

Merdigera obscura

ad