The feeding habits of Pleurobranchaea californica: MacFarland, 1966 (Opisthobranchia Notaspidea) in Monterey Bay, California

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Battle, K., & Nybakken, J. (1998). The feeding habits of Pleurobranchaea californica: MacFarland, 1966 (Opisthobranchia Notaspidea) in Monterey Bay, California. Veliger, 41(3), 213-226.
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TitleThe feeding habits of Pleurobranchaea californica: MacFarland, 1966 (Opisthobranchia Notaspidea) in Monterey Bay, California
AuthorsK. Battle, J. Nybakken
AbstractThe natural diet of Pleurobranchaea californica was studied in Monterey Bay, California. Specimens were collected from 29 January to 9 November 1992, at depths of 30-100 m using an otter trawl and an interfacial trawl. Three hundred fifty-six individuals were collected and ranged in size from 0.01-411 g with most of the individuals weighing between 1.0 and 50 g. The gut contents were examined and 16 different taxa were identified. Thirty-three percent of the guts were empty. Many animals had sediment in their guts, which was presumed to be a result of their ingesting or attempting to ingest prey. Pleurobranchaea californica was found to be a euryphagic predator with pronounced cannibalism. Individual Index of Relative Importance values showed that opisthobranchs made up the largest portion of the diet. The opisthobranchs in the diet included Pleurobranchaea californica (as prey), Armina californica, and Aglaja sp. The diets were similar for specimens of P. californica collected at all depths, but did change depending upon the season in which the animals were collected.
JournalVeliger
Date1998
Volume41
Issue3
Start page213
End page226
ISSN00423211
NoteCited By (since 1996):4, Invertebrates

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