[Annelida] Food of Spionid larvae

James Blake via annelida%40net.bio.net (by jablake9 from gmail.com)
Tue Dec 14 11:40:01 EST 2010


David,

I have cultured numerous polychaetes in the laboratory, including many
species of Spionidae. We raised cultures of several species of phytoplanktic
organisms including Dunaliella tertiolecta, Phaedactylum tricornutum,
Skeletonema costatum, and sometimes Isochrysis spp. Typically, a "salad" of
these organisms would be prepared and inserted into the larval cultures drop
by drop.

 We have also used freeze dried cells of Chlorella, Enteromorpha, or other
algal species that are stored as a powder; these dried cells are then
combined with seawater, this mixture can also be added to the cultures drop
by drop.

In the field the larvae should be feeding on similar organisms that are
available depending upon seasonal phytoplankton abundance. It is my belief
that spionid larvae and perhaps others will overfeed during times of
plankton blooms and build up lipid reserves that carry them through times
when phytoplankton is sparse. Healthy spionid larvae from the plankton
should have distinct lipid droplets in their guts. After capture and
placement in cultures, the larvae can usually survive and continue to grow
on their reserves, but eventually will need to be fed.

Hope this helps,

Jim Blake

On Tue, Dec 14, 2010 at 7:59 AM, Tempelman, David <
David.Tempelman from grontmij.nl> wrote:

>  Dear all,
>
> Would someone know, what kind of food Spionidae larvae take? We have found
> them in plankton samples from the Netherlands and are interested in their
> ecology. Many thanks for responding.
>
> Best regards,
>
> David Tempelman
> Ecoloog
> Grontmij Nederland B.V.
>
> Grontmij, team Ecologie
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-- 
James A. Blake, Ph.D.
Marine & Coastal Center
AECOM Environment, NE Region
89 Water Street
Woods Hole, Massachusetts 02543
Tel: 508-457-7900; FAX: 5008-457-7595
E-Mail: James.Blake from aecom.com and
jablake9 from gmail.com
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