Reproduction rates and secondary production of three species of the rotifer genus Synchaeta in the estuarine Potomac River
Rotifers are a relatively well-studied component of lacustrine systems but their role is only poorly understood in estuaries. Three species of the genus Synchaeta—S. baltica, S. triophthalma and S.cecilia —dominate the cold-water assemblage of rotifers in Chesapeake Bay. Laboratory experiments were...
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Oxford University Press
1988
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fthighwire:oai:open-archive.highwire.org:plankt:10/4/659 2023-05-15T18:49:44+02:00 Reproduction rates and secondary production of three species of the rotifer genus Synchaeta in the estuarine Potomac River Heinbokel, John F. Coats, D.Wayne Henderson, Kelly W. Tyler, Mary A. 1988-01-01 00:00:00.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/10/4/659 https://doi.org/10.1093/plankt/10.4.659 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/10/4/659 http://dx.doi.org/10.1093/plankt/10.4.659 Copyright (C) 1988, Oxford University Press Articles TEXT 1988 fthighwire https://doi.org/10.1093/plankt/10.4.659 2007-06-24T03:58:36Z Rotifers are a relatively well-studied component of lacustrine systems but their role is only poorly understood in estuaries. Three species of the genus Synchaeta—S. baltica, S. triophthalma and S.cecilia —dominate the cold-water assemblage of rotifers in Chesapeake Bay. Laboratory experiments were conducted to determine the temperature dependence of egg development time (EDT) for each species; EDT varied over an approximate range of 90–9 h as temperature ( T ) varied from 2 to 22°C. The EDT/temperature relationships could be closely fitted by a simple polynomial equation of the form log(EDT) = a + b (log T ) + c (log T )2 for each species. Natural populations of these three rotifers were sampled during a cruise in the Potomac River (7–11 March 1983). Estimates of specific reproductive rates ( b ) were calculated based on the previously defined EDT/temperature relationship and the observed ratio of eggs/rotifers for each species. The two most abundant species, S.triophthalma and S.cecilia , showed a clear dependence of b on the observed chlorophyll a concentrations. Maximum reproductive rates ({small tilde}0.015 h−1) were attained only at relatively high phytoplankton densities within a bloom of Heterocapsa triquetra where the chlorophyll a concentrations exceeded 10 μg l−1. Estimates of secondary production suggest that Synchaeta spp. may contribute to the trophic flow of carbon in this system with a significance at least similar to that of the planktonic copepods. Text Copepods Rotifer HighWire Press (Stanford University) Journal of Plankton Research 10 4 659 674 |
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Articles Heinbokel, John F. Coats, D.Wayne Henderson, Kelly W. Tyler, Mary A. Reproduction rates and secondary production of three species of the rotifer genus Synchaeta in the estuarine Potomac River |
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Articles |
description |
Rotifers are a relatively well-studied component of lacustrine systems but their role is only poorly understood in estuaries. Three species of the genus Synchaeta—S. baltica, S. triophthalma and S.cecilia —dominate the cold-water assemblage of rotifers in Chesapeake Bay. Laboratory experiments were conducted to determine the temperature dependence of egg development time (EDT) for each species; EDT varied over an approximate range of 90–9 h as temperature ( T ) varied from 2 to 22°C. The EDT/temperature relationships could be closely fitted by a simple polynomial equation of the form log(EDT) = a + b (log T ) + c (log T )2 for each species. Natural populations of these three rotifers were sampled during a cruise in the Potomac River (7–11 March 1983). Estimates of specific reproductive rates ( b ) were calculated based on the previously defined EDT/temperature relationship and the observed ratio of eggs/rotifers for each species. The two most abundant species, S.triophthalma and S.cecilia , showed a clear dependence of b on the observed chlorophyll a concentrations. Maximum reproductive rates ({small tilde}0.015 h−1) were attained only at relatively high phytoplankton densities within a bloom of Heterocapsa triquetra where the chlorophyll a concentrations exceeded 10 μg l−1. Estimates of secondary production suggest that Synchaeta spp. may contribute to the trophic flow of carbon in this system with a significance at least similar to that of the planktonic copepods. |
format |
Text |
author |
Heinbokel, John F. Coats, D.Wayne Henderson, Kelly W. Tyler, Mary A. |
author_facet |
Heinbokel, John F. Coats, D.Wayne Henderson, Kelly W. Tyler, Mary A. |
author_sort |
Heinbokel, John F. |
title |
Reproduction rates and secondary production of three species of the rotifer genus Synchaeta in the estuarine Potomac River |
title_short |
Reproduction rates and secondary production of three species of the rotifer genus Synchaeta in the estuarine Potomac River |
title_full |
Reproduction rates and secondary production of three species of the rotifer genus Synchaeta in the estuarine Potomac River |
title_fullStr |
Reproduction rates and secondary production of three species of the rotifer genus Synchaeta in the estuarine Potomac River |
title_full_unstemmed |
Reproduction rates and secondary production of three species of the rotifer genus Synchaeta in the estuarine Potomac River |
title_sort |
reproduction rates and secondary production of three species of the rotifer genus synchaeta in the estuarine potomac river |
publisher |
Oxford University Press |
publishDate |
1988 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/10/4/659 https://doi.org/10.1093/plankt/10.4.659 |
genre |
Copepods Rotifer |
genre_facet |
Copepods Rotifer |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/10/4/659 http://dx.doi.org/10.1093/plankt/10.4.659 |
op_rights |
Copyright (C) 1988, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/10.4.659 |
container_title |
Journal of Plankton Research |
container_volume |
10 |
container_issue |
4 |
container_start_page |
659 |
op_container_end_page |
674 |
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1766243329456996352 |