[NatureNS] Freshwater clam

Date: Sat, 24 Mar 2007 20:29:50 -0400
From: David & Alison Webster <dwebster@glinx.com>
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c.majka@ns.sympatico.ca wrote:

> Hi dave,
>
> Are you sure they are not one of the Pea Clams (Pisidium spp.)? There 
> are a variety of species here in Nova Scotia:
>
Hi Chris,
    Thanks for the suggestion. My resources, and consequently my 
knowledge, with respect to land and freshwater Mollusca are zero. So it 
may well be a Pea Clam of some kind.

    Yt, DW

>
> Pisidium conventus - Arctic-Alpine Pea Clam
>
> Pisidium variable - Triangular Pea Clam
>
> Pisidium nitidum - Shiny Pea Clam
>
> Pisidium milium - Quadrangular Pea Clam
>
> Pisidium lilljeborgi - Lilleborg's Pea Clam
>
> Pisidium ferrugineum - Rusty Pea Clam
>
> Pisidium compressum - Ridge-Beak Pea Clam
>
> Pisidium casertanum - Ubiquitous Pea Clam
>
> Pisidium adamsi - Adams' Pea Clam
>
>
> Most of which grow no larger than 2-3 mm.
>
>
> Cheers!
>
>
> Chris
>
>
> On 24-Mar-07, at 5:34 PM, David & Alison Webster wrote:
>
>
>> Dear All,            March 24, 2007
>>
>>    While sweeping rotting grass and debris in transient pools of a 
>> drainage ditch today I encountered hundreds of small bivalves (~1-2 
>> mm long; dirty yellow, translucent and darker near the hinge), 
>> presumably young freshwater clams of some kind.
>>
>>
>>    Logically, freshwater clams would spawn early in the spring, so 
>> that the mobile phase would have maximum chance of reaching wet pools 
>> that are cut off later in the summer. If this is in fact the case 
>> (does anyone know when they do spawn ?) then are these clams at least 
>> 12 months old or can they grow rapidly enough to be this year's crop ?
>>
>>
>> Yt, Dave Webster, Kentville
>>
>>
>
> _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._.
>
> Christopher Majka - Nova Scotia Museum of Natural History
>
> 1747 Summer Street, Halifax, Nova Scotia, Canada   B3H 3A6
>
> (902) 424-6435   Email < c.majka@ns.sympatico.ca 
> <mailto:c.majka@ns.sympatico.ca> >
>
> _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._.
>
>



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