Predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western Canada
Experimental studies on Diaptoimus shoshone, D. arcticus, D. nevadensis, Cyclops bicuspidatus thomasi, C. vernalis, and Branckinecta gigas show that these predatory species can capture and eat many prey species of various sizes. B. gigas probably combines raptorial with filter feeding and can eat 15...
Published in: | Canadian Journal of Zoology |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1970
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/z70-212 http://www.nrcresearchpress.com/doi/pdf/10.1139/z70-212 |
id |
crcansciencepubl:10.1139/z70-212 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/z70-212 2024-03-03T08:49:24+00:00 Predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western Canada Anderson, R. Stewart 1970 http://dx.doi.org/10.1139/z70-212 http://www.nrcresearchpress.com/doi/pdf/10.1139/z70-212 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 48, issue 6, page 1229-1240 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1970 crcansciencepubl https://doi.org/10.1139/z70-212 2024-02-07T10:53:39Z Experimental studies on Diaptoimus shoshone, D. arcticus, D. nevadensis, Cyclops bicuspidatus thomasi, C. vernalis, and Branckinecta gigas show that these predatory species can capture and eat many prey species of various sizes. B. gigas probably combines raptorial with filter feeding and can eat 150 or more smaller crustaceans per day. Adult D. shoshone, D. arcticus, and D. nevadensis eat up to 12 or more cyclopoids or diaptomids per day. Rotifers are also preferred prey. Predation rates are inversely proportional to prey size. Cannibalism probably causes the uniformity in body size and instar of predaceous diaptomids in some populations, C. vernalis and C. b. thomasi can eat six or more prey animals daily, depending on the size of the prey. Predaceous diaptomids and cyclopoids will eat the same prey species at rates which are influenced more by hunger than by abundance of prey. Furthermore, each species is a potential predator on the other, where the role of predator or prey is determined by the relative size or instar of the two groups. Hence, codominance of the zooplankton by predaceous diaptomid and cyclopoid species is unlikely. Article in Journal/Newspaper Zooplankton Canadian Science Publishing Canada Canadian Journal of Zoology 48 6 1229 1240 |
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 Anderson, R. Stewart Predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western Canada |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Experimental studies on Diaptoimus shoshone, D. arcticus, D. nevadensis, Cyclops bicuspidatus thomasi, C. vernalis, and Branckinecta gigas show that these predatory species can capture and eat many prey species of various sizes. B. gigas probably combines raptorial with filter feeding and can eat 150 or more smaller crustaceans per day. Adult D. shoshone, D. arcticus, and D. nevadensis eat up to 12 or more cyclopoids or diaptomids per day. Rotifers are also preferred prey. Predation rates are inversely proportional to prey size. Cannibalism probably causes the uniformity in body size and instar of predaceous diaptomids in some populations, C. vernalis and C. b. thomasi can eat six or more prey animals daily, depending on the size of the prey. Predaceous diaptomids and cyclopoids will eat the same prey species at rates which are influenced more by hunger than by abundance of prey. Furthermore, each species is a potential predator on the other, where the role of predator or prey is determined by the relative size or instar of the two groups. Hence, codominance of the zooplankton by predaceous diaptomid and cyclopoid species is unlikely. |
format |
Article in Journal/Newspaper |
author |
Anderson, R. Stewart |
author_facet |
Anderson, R. Stewart |
author_sort |
Anderson, R. Stewart |
title |
Predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western Canada |
title_short |
Predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western Canada |
title_full |
Predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western Canada |
title_fullStr |
Predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western Canada |
title_full_unstemmed |
Predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western Canada |
title_sort |
predator–prey relationships and predation rates for crustacean zooplankters from some lakes in western canada |
publisher |
Canadian Science Publishing |
publishDate |
1970 |
url |
http://dx.doi.org/10.1139/z70-212 http://www.nrcresearchpress.com/doi/pdf/10.1139/z70-212 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Zooplankton |
genre_facet |
Zooplankton |
op_source |
Canadian Journal of Zoology volume 48, issue 6, page 1229-1240 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z70-212 |
container_title |
Canadian Journal of Zoology |
container_volume |
48 |
container_issue |
6 |
container_start_page |
1229 |
op_container_end_page |
1240 |
_version_ |
1792506617073238016 |