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A Comparison of Aspects of the Biology of Paranemertes peregrina (Nemertea) from Bodega Harbor, California, and Washington State

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Title: A Comparison of Aspects of the Biology of Paranemertes peregrina (Nemertea) from Bodega Harbor, California, and Washington State
Authors: Roe, Pamela
Issue Date: Jul 1979
Publisher: University of Hawaii Press
Citation: Roe P. 1979. A comparison of aspects of the biology of Paranemertes peregrina (Nemertea) from Bodega Harbor, California, and Washington State. Pac Sci 33(3): 281-287.
Abstract: In Bodega Harbor, California, the nemertean Paranemertes
peregrina spawns in June or July. Adults in the study area were small in
comparison to worms found on two Washington mud flats. Population density
of active worms averaged 7.38 worms/m2, with much variation due to time of
day of low tides. Approximately 28 percent of the active population ate during
the low tide periods that were sampled. Prey included spionids, nephtyids,
polychaetes with capillary setae, and syllids (in decreasing importance). The
number of prey families in the diet of California nemerteans was higher
than in the two Washington mud flat populations and preferred nereid
prey was less abundant in California and comprised less of the total diet of
nemerteans there. Spionids were the major prey of California nemerteans in
spring and summer; nereids were the major prey in fall and winter. In food
preference tests, nemerteans showed negative responses to phoronids and
lumbrinerids and positive responses to Nephtys caecoides. In comparison to
three Washington populations, the population in Bodega Harbor was most
similar to a rocky intertidal population and much different from two mud flat
populations.
URI/DOI: http://hdl.handle.net/10125/1478
ISSN: 0030-8870
Appears in Collections:Pacific Science Volume 33, Number 3, 1979



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