Bhavani E Narayanaswamy
> 1) What kind of feeding mode does Paramphinome jeffreysi use?
> Different papers suggest different feeding modes. The two alternatives
> being a carnivore or a sub-surface deposit feeder.
Perhaps a quick gut examination of Paramphinome may indicate their
feeding mode. Many soft-bottom dwelling amphinomids tend to prefer
animal remains, especially tropical forms such as Pareurythoe. However,
even these taxa will selectively ingest algal films in a pinch. Eurythoe
ingests calcareous sediments, fragments of Sargassum that are either
clean or encrusted with epibiota (particularly bryozoans), and animal
remains. Pareurythoe from California (living in sediments under rocks)
also prefers animals remains, but also ingests shelly sediments. Chloeia
pinnata is a carrion feeding species that inhabits soft sediments. . An
interesting paper on Chloeia (cited below) will be useful:
Jones, G.F. & B.E. Thompson. 1987. The distribution and abundance of
Chloeia pinnata Moore, 1911 (Polychaeta: Amphinomidae) on the southern
California borderland. Pacific Science 41:122-131.
Also the doctoral thesis by Thompson should be consulted for detailed
information on the gut contents of Chloeia.
Thompson, B.E. 1982. Food resource utilization and partitioning in
macrobenthic communities of the southern California bight. Doctoral thesis.
University of Southern California. 463 pp.
There probably are anecdotal observations concerning feeding of Paramphinome
jeffreysi in the literature. I will have a quick look and get back to you
when I can.
Hope this helps.
Jerry
************************************************************
Jerry D. Kudenov
Dept. of Biological Sciences
University of Alaska Anchorage
3211 Providence Drive
Anchorage, Alaska 99508 USA
afjdk at uaa.alaska.edu
907-786-1769 Office
907-786-6110 Lab
907-786-4607 Fax
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