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Snails

snails

marine, freshwater, or terrestrial mollusks of the class gastropoda. most have an enclosing spiral shell, and several genera harbor parasites pathogenic to man.


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Please check my answers.

... will speciation not occur? A. Logging operations in a forest cut a single population of beetles in two so that they can no longer mix. B. Some snails in a population develop shells that twist to the right instead of the left, which makes mating impossible with partners of opposite shell shape. ...

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by moondisyko
Fri Apr 04, 2014 9:00 pm
 
Forum: Evolution
Topic: Please check my answers.
Replies: 1
Views: 1207

some clues from animal kingdom

"Some species, such as some snails, practice sex change: adults start out male, then become female (See also sex reversal). In tropical clown fish, the dominant individual in a group becomes female while the other ones are male, and ...

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by surgeongirl
Wed Sep 11, 2013 6:44 pm
 
Forum: Evolution
Topic: Gender divison in two opposites is greatest mistake of manki
Replies: 25
Views: 17830

How can i asses the parasie loading of littorina littoria?

If it's in snails, can't you simply use many of them and cut few of them at each time point?

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by JackBean
Thu Feb 28, 2013 3:40 pm
 
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 3633

Re: How can i asses the parasie loading of littorina littoria?

Your species has an operculum and is marine, so I'm not sure if this would work. We used to collect freshwater snails to see if they had schistosomes. The snails would release cercariae when transferred to a vial of water. We could then see the released cercariae when the vial ...

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by marineman
Sun Feb 24, 2013 1:36 pm
 
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 3633

Re: How can i asses the parasie loading of littorina littoria?

Your species has an operculum and is marine, so I'm not sure if this would work. We used to collect freshwater snails to see if they had schistosomes. The snails would release cercariae when transferred to a vial of water. We could then see the released cercariae when the vial ...

See entire post
by wbla3335
Fri Feb 22, 2013 9:33 pm
 
Forum: Zoology Discussion
Topic: How can i asses the parasie loading of littorina littoria?
Replies: 7
Views: 3633
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