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Pinnotherid crustacea and polychaetes

Aaron Baldwin jsapb at gci.net
Wed Dec 8 22:39:07 EST 1999

Jack Pierce & group,

I am currently working with two species of Pinnotherid associated with 
terebellid polychaetes, one possibly undescribed, the other Pinnixa 
tubicola. These are the only NE Pacific pinnotherids I have found directly 
associated with polychaetes. I have found P. schmitti & Scleroplax 
granulata "loosely" associated with Echiurus echiurus (meaning I have 
found them in cases where they were probably in the burrow with the 
Echiurus, but I have found both species in bivalve burrows, with at least two 
species of thalassinid crustacean, and free living). Pinnixa tubicola is 
probably the most modified of  NE Pacific pinnotherids in having a very 
wide yet very short carapace and very elongate 4th walking legs, 
presumably to facilitate movement in the terebellid and chaetopterid tubes. -

Aaron & Laura Baldwin
609 Saw Mill Creek Blvd
Sitka, Alaska 99835
<jsapb at gci.net>

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