Copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock
10 pages, 7 figures, 2 tables
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| Format: | artículo biblioteca |
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Inter Research
2000-02
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| Subjects: | Ingestion rates, Parvocalanus crassirostris, Acrocalanus inermis, O. nana, Oithona simplex, Nanoplankton, Copepods, |
| Online Access: | http://hdl.handle.net/10261/180989 |
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dig-icm-es-10261-1809892020-12-13T09:26:36Z Copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock Calbet, Albert Landry, Michael R. Scheinberg, R.D. Ingestion rates Parvocalanus crassirostris Acrocalanus inermis O. nana Oithona simplex Nanoplankton Copepods 10 pages, 7 figures, 2 tables Ingestion rates of 4 small copepod species (Oithona simplex, O. nana, Acrocalanus inermis and Parvocalanus crassirostris) were investigated in Kaneohe Bay, Hawaii, during a midsummer increase of the pico- and nanoplankton communities. There was no evidence that adult female copepods fed significantly on picoplankton-sized cells. However, all the species responded behaviorally to variations in the concentration (10 to 110 pg Cl-1) and size spectrum (relative increase of cells >5 μm) of nanoplankton prey. The copepods generally behaved as opportunistic particle feeders, demonstrating higher consumption rates on the most abundant cells (2-5 μm nanoplankton); however, autotrophs were usually selected over heterotrophs of similar size. Maximum ingestion rates were similar for the 2 calanoids and O. nana (around 120000 cells copepod-1 d-1) and lower for O. simplex (around 40000 cells copepod-1 d-1), but biomass-specific rates of O. simplex equaled those of the other species. At the highest nanoplankton concentrations, the ingestion rates of copepods appeared saturated, daily rations ranging from 100% body C d-1 for A. inermis to 260% body C d-1 for P. crassirostris. The differences between ingestion rates measured as cells per copepod per day and those converted to carbon suggested that ingestion might be held below potential by the cumulative handling times of individual prey rather than the physiological constraints of food consumption and digestive processing Peer Reviewed 2019-05-07T08:01:07Z 2019-05-07T08:01:07Z 2000-02 2019-05-07T08:01:07Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.3354/meps193075 issn: 0171-8630 e-issn: 1616-1599 Marine Ecology Progress Series 193: 75-84 (2000) http://hdl.handle.net/10261/180989 10.3354/meps193075 Publisher's version https://doi.org/10.3354/meps193075 Sí open Inter Research |
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Europa del Sur |
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Biblioteca del ICM España |
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Ingestion rates Parvocalanus crassirostris Acrocalanus inermis O. nana Oithona simplex Nanoplankton Copepods Ingestion rates Parvocalanus crassirostris Acrocalanus inermis O. nana Oithona simplex Nanoplankton Copepods |
| spellingShingle |
Ingestion rates Parvocalanus crassirostris Acrocalanus inermis O. nana Oithona simplex Nanoplankton Copepods Ingestion rates Parvocalanus crassirostris Acrocalanus inermis O. nana Oithona simplex Nanoplankton Copepods Calbet, Albert Landry, Michael R. Scheinberg, R.D. Copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock |
| description |
10 pages, 7 figures, 2 tables |
| format |
artículo |
| topic_facet |
Ingestion rates Parvocalanus crassirostris Acrocalanus inermis O. nana Oithona simplex Nanoplankton Copepods |
| author |
Calbet, Albert Landry, Michael R. Scheinberg, R.D. |
| author_facet |
Calbet, Albert Landry, Michael R. Scheinberg, R.D. |
| author_sort |
Calbet, Albert |
| title |
Copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock |
| title_short |
Copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock |
| title_full |
Copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock |
| title_fullStr |
Copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock |
| title_full_unstemmed |
Copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock |
| title_sort |
copepod grazing in a subtropical bay: species-specific responses to a midsummer increase in nanoplankton standing stock |
| publisher |
Inter Research |
| publishDate |
2000-02 |
| url |
http://hdl.handle.net/10261/180989 |
| work_keys_str_mv |
AT calbetalbert copepodgrazinginasubtropicalbayspeciesspecificresponsestoamidsummerincreaseinnanoplanktonstandingstock AT landrymichaelr copepodgrazinginasubtropicalbayspeciesspecificresponsestoamidsummerincreaseinnanoplanktonstandingstock AT scheinbergrd copepodgrazinginasubtropicalbayspeciesspecificresponsestoamidsummerincreaseinnanoplanktonstandingstock |
| _version_ |
1777666910971756544 |