Re: Anodonta
    What seems to have happened is that the fish responsible for carrying baby
Anodontae have become "extremely rare" in the rivers and creeks favored by
Anodonta. Recently, reports are that only adult (mostly aged) examples can be
found. No puppies. You are watching extinction in action.
        Art

G Thomas Watters wrote:

> >Is the genus Anodonta no longer used for any species?
> >
> >Thanks,
> >Linda Bush
> >
>
> Anodonta has been split based on genetic evidence. North America now has
> Anodonta, Utterbackia, and Pyganodon.  Much of this is based on the work of
> my colleague Randy Hoeh, now at Kent State here in Ohio. My own studies of
> fossil mussels suggests that eastern anodontines are related to European
> species, while western ones are derived from Asia (the same for
> Margaritifera), so I support the splitting. Further splitting world wide
> will be needed to capture the phylogeny of this group.
>
> The watershed paper is:
>
> Hoeh, W.R. 1990. Phylogenetic relationships among Eastern North American
> Anodonta (Bivalvia: Unionidae). Malacological Review 23(1-2):63-82.
>
> *****************************************
>  G Thomas Watters, PhD
>  Ohio Biological Survey &
>  Aquatic Ecology Laboratory
>  The Ohio State University
>  1315 Kinnear Road
>  Columbus, OH 43212 USA
>  v: 614-292-6170  f: 614-292-0181
> ******************************************
>
> "The world is my oyster except for months with an 'R' in them" - Firesign
> Theater
>
> "Give a man a fish and you feed him for a day. Teach a man to fish and he
> has to buy a license" - GTW
>
> "Beliefs are more powerful than facts" - Duke Paulus Atreides