Year: 1985
Type: article
Abstract: Omnlvory by the 2 coastal marine copepods Centropages hamatus (Lilljeborg) and Labidocera aestiva Wheeler was examined in laboratory grazing and predation experiments.Cooccurring food items were utilized.C. hamatus ingested more carbon in the form of plant material (Z = 2.05 pgC copepod-' d-l) than did L. aestiva (2 = 0.66 pgC copepod -' d-l).Conversely, L. aestiva ingested more carbon in the form of animal food (F = 3.35 pgC copepod-' d-') than did C. hamatus (2 = 0.98 pgC copepod-' d-l).Rates of ingestion of copepod nauplii and phytoplankton by both C. hamatus and L. aestiva increased significantly with increasing food concentrations and temperatures.Average grazing and predation rates of C. hamatus and L. aestiva upon natural phytoplankton assemblages and nauplii appeared to follow biomass peaks.The maximum field concentration of C. hamatus (722 m-3) appeared capable of daily ingesting means of 0.85 % of phytoplankton carbon and 8.23 % of the copepod nauplli present .Maximum field concentration of adult L. aestiva (8 m-3) appeared capable of ingesting means of only 0.01 % of phytoplankton carbon and 0.29 % of the copepod nauplii present.
Source: Marine Ecology Progress Series
DOI: 10.3354/meps021113
Authors: WJ Conley, JT Turner
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Life below water
Open Access status: bronze
OpenAlex ID: W1972075657