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The Assimilation of Elements Ingested by Marine Copepods
Abstract
The efficiency with which a variety of ingested elements (Ag, Am, C, Cd, P, S, Se, and Zn) were assimilated in marine calanoid copepods fed uniformly radiolabeled diatoms ranged from 0.9% for Am to 97.1% for Se. Assimilation efficiencies were directly related to the cytoplasmic content of the diatoms. This relation indicates that the animals obtained nearly all their nutrition from this source. The results suggest that these zooplankton, which have short gut residence times, have developed a gut lining and digestive strategy that provides for assimilation of only soluble material. Because the fraction of total cellular protein in the cytoplasm of the diatoms increased markedly with culture age, copepods feeding on senescent cells should obtain more protein than those feeding on rapidly dividing cells. Elements that are appreciably incorporated into algal cytoplasm and assimilated in zooplankton should be recycled in surface waters and have longer oceanic residence times than elements bound to cell surfaces.
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Cites
Measurement of protein using bicinchoninic acid
Smith, P. K., Krohn, R. I., Hermanson, G. T., Mallia, A. K., Gartner, F. H., Provenzano, M. D., Fujimoto, E. K., Goeke, N. M., Olson, B. J., & Klenk, D. C. (1985) · Analytical Biochemistry · doi:10.1016/0003-2697(85)90442-7 · Cited by 18,482
Cited by
Why Is Metal Bioaccumulation So Variable? Biodynamics as a Unifying Concept
Luoma, S. N., & Rainbow, P. S. (2005) · Environmental Science & Technology · doi:10.1021/es048947e · Cited by 912
Cloern, J. E. (1996) · Reviews of Geophysics · doi:10.1029/96rg00986 · Cited by 818
Zooplankton fecal pellets, marine snow and sinking phytoplankton blooms
Turner, J. (2002) · Aquatic Microbial Ecology · doi:10.3354/ame027057 · Cited by 757
Bioaccumulation of mercury in pelagic freshwater food webs
Watras, C. J., Back, R. C., Halvorsen, S., Hudson, R. J. M., Morrison, K. A., & Wente, S. P. (1998) · Science of The Total Environment · doi:10.1016/s0048-9697(98)00228-9 · Cited by 649
Suspended Particles: Their Role in Estuarine Biogeochemical Cycles
Turner, A., & Millward, G. E. (2002) · Estuarine, Coastal and Shelf Science · doi:10.1006/ecss.2002.1033 · Cited by 462
Metadata
- Authors
- Reinfelder, J. R., & Fisher, N. S.
- Venue
- Science
- Published
- 1991-02-15
- Volume
- 251
- Issue
- 4995
- Pages
- 794-796
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2009031556
- Cited by
- 382
- References
- 1
- FWCI
- 7.24
- Type
- journal article
- Language
- en
- Open access
- closed
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
