Questions tagged [molluscs]

The tag has no usage guidance.

7 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
4
votes
1answer
144 views

What is this sea shell?

Found in Belgrade, possibly carried back from the Mediterranean or Aegean coast.
3
votes
0answers
72 views

(Aquatic gastropod) Physae identification

I need help to identify a physa. What are the identification keys to make the difference between: physa fontinalis, physa marmorata , physa acuta (syn. Physella acuta) The difference ...
3
votes
0answers
66 views

Why might the chirality of gastopods be dominantly dextral?

This wikipedia page on gastropods provides a definition of chirality, and briefly describes the genetic mechanisms behind why a shell is wound left (sinistral) or right (dextral) handed. It also ...
1
vote
0answers
11 views

Does the radula sac in any mollusc serve a purpose other than sheathing the radula?

According to Barne Gat Shellfish: When not feeding the radula is retracted into this chamber which protects the mouth from the sharp teeth of the radula. Does the radula sac serve any other purpose?
1
vote
0answers
12 views

What terrestrial Gastropod (specifically snails) has the fastest reproductive rate?

I am looking to do a series of experiments to test the adaptation of snails to different environments (Controlled environments in a lab setting. No organisms would be released into the wild under any ...
1
vote
0answers
8 views

Why are certain types of clams prevalent in certain areas?

I live near a large tidal estuary and according to one person the only kind of clams to be found there are razor clams. Why would there only be one kind of clam? I mean mud is mud right? What makes it ...
1
vote
0answers
32 views

What percentage of genome do slugs and scallops have in common?

We can know genetic distance of thousands of species. The OTT tree of life gives genetic distance for nearly all species. Is there a resource to compare the genomes of any sequenced animals to know ...