Chaoborus populations: response to food web manipulation and potential effects on zooplankton communities
Chaoborus populations were studied in two lakes in which fish predation was experimentally reduced, and in a reference lake. In Tuesday Lake, major reduction of fish predation led to substantial increases in density of Chaoborus punctipennis. Analysis of crop contents and estimates of consumption ra...
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Language: | English |
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1987
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Online Access: | http://dx.doi.org/10.1139/z87-433 http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-433 |
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crcansciencepubl:10.1139/z87-433 2024-04-28T08:41:32+00:00 Chaoborus populations: response to food web manipulation and potential effects on zooplankton communities Elser, Monica M. Ende, Carl N. von Sorrano, Patricia Carpenter, Stephen R. 1987 http://dx.doi.org/10.1139/z87-433 http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-433 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 65, issue 12, page 2846-2852 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1987 crcansciencepubl https://doi.org/10.1139/z87-433 2024-04-09T06:56:27Z Chaoborus populations were studied in two lakes in which fish predation was experimentally reduced, and in a reference lake. In Tuesday Lake, major reduction of fish predation led to substantial increases in density of Chaoborus punctipennis. Analysis of crop contents and estimates of consumption rates suggested that C. punctipennis caused declines of rotifer and copepod populations following the manipulations. In Peter Lake, lesser changes in fish predation caused no major change in density of Chaoborus flavicans, perhaps because food limitation compensated for effects of reduced predation. In both Peter Lake and the reference lake, Paul Lake, C. flavicans preyed heavily and selectively on Daphnia less than about 1.4 mm in total length. Bioenergetic calculations indicated that up to 46% of the daphnids were consumed daily. At some times of the year, certain zooplankton populations (especially noncolonial rotifers, small copepods, and small cladocerans) were strongly influenced by Chaoborus predation. Article in Journal/Newspaper Copepods Rotifer Canadian Science Publishing Canadian Journal of Zoology 65 12 2846 2852 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Elser, Monica M. Ende, Carl N. von Sorrano, Patricia Carpenter, Stephen R. Chaoborus populations: response to food web manipulation and potential effects on zooplankton communities |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Chaoborus populations were studied in two lakes in which fish predation was experimentally reduced, and in a reference lake. In Tuesday Lake, major reduction of fish predation led to substantial increases in density of Chaoborus punctipennis. Analysis of crop contents and estimates of consumption rates suggested that C. punctipennis caused declines of rotifer and copepod populations following the manipulations. In Peter Lake, lesser changes in fish predation caused no major change in density of Chaoborus flavicans, perhaps because food limitation compensated for effects of reduced predation. In both Peter Lake and the reference lake, Paul Lake, C. flavicans preyed heavily and selectively on Daphnia less than about 1.4 mm in total length. Bioenergetic calculations indicated that up to 46% of the daphnids were consumed daily. At some times of the year, certain zooplankton populations (especially noncolonial rotifers, small copepods, and small cladocerans) were strongly influenced by Chaoborus predation. |
format |
Article in Journal/Newspaper |
author |
Elser, Monica M. Ende, Carl N. von Sorrano, Patricia Carpenter, Stephen R. |
author_facet |
Elser, Monica M. Ende, Carl N. von Sorrano, Patricia Carpenter, Stephen R. |
author_sort |
Elser, Monica M. |
title |
Chaoborus populations: response to food web manipulation and potential effects on zooplankton communities |
title_short |
Chaoborus populations: response to food web manipulation and potential effects on zooplankton communities |
title_full |
Chaoborus populations: response to food web manipulation and potential effects on zooplankton communities |
title_fullStr |
Chaoborus populations: response to food web manipulation and potential effects on zooplankton communities |
title_full_unstemmed |
Chaoborus populations: response to food web manipulation and potential effects on zooplankton communities |
title_sort |
chaoborus populations: response to food web manipulation and potential effects on zooplankton communities |
publisher |
Canadian Science Publishing |
publishDate |
1987 |
url |
http://dx.doi.org/10.1139/z87-433 http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-433 |
genre |
Copepods Rotifer |
genre_facet |
Copepods Rotifer |
op_source |
Canadian Journal of Zoology volume 65, issue 12, page 2846-2852 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z87-433 |
container_title |
Canadian Journal of Zoology |
container_volume |
65 |
container_issue |
12 |
container_start_page |
2846 |
op_container_end_page |
2852 |
_version_ |
1797571796004765696 |