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Gastropods

Gastropod

a member of the largest class of phylum mollusca. Characteristics generally include: a foot upon which the rest of the body (called the visceral mass) sits, a well-developed head, a protective one-piece shell, and body torsion - where most of the visceral mass is twisted anticlockwise 180 degrees so that the back end of the animal is positioned over its head. The class includes the snails, slugs, sea hares, sea slugs, limpets, and abolone.Compare brachiopod.


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How can i asses the parasie loading of littorina littoria?

There is too much variation in the parasite loading of gastropods.

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by marineman
Sat Mar 02, 2013 10:27 am
 
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 2776

Book recommendation for exam

... : Feeding, respiration, locomotion, shell diversiy; general features and life history of Lamellidens, Pila and Sepia, torsion and detorsion in gastropods. 11. Echinodermata : Feeding, respiration, locomotion larval forms; general features and life history of Asterias. 12. Protochordata : Origin ...

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by bertstare
Sun Oct 21, 2012 2:19 pm
 
Forum: Zoology Discussion
Topic: Book recommendation for exam
Replies: 3
Views: 4872

Re: Marine Invertebrates and Evolution

... marine, in an equivalent proportion to the "obviously transitional" terrestrial fossils. Here's just one grouping of them — the fossil gastropods; http://en.wikipedia.org/wiki/List_of_marine_gastropod_genera_in_the_fossil_record . It's a looong list, and they all fit in a nested hierarchy ...

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by Lenoxus
Mon Apr 26, 2010 1:56 pm
 
Forum: Evolution
Topic: Marine Invertebrates and Evolution
Replies: 2
Views: 2617


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