Selective Predation by Procladius in an Arctic Alaskan Lake
In arctic Alaskan Toolik Lake, the predatory larval chironomid Procladius spp. (Diptera) feeds on a variety of benthic organisms including algae, other chironomids, and microcrustaceans. Laboratory experiments with two similar-sized chironomid prey, instar I Chironomus and instar II Paratanytarsus,...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Canadian Science Publishing
1986
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Online Access: | http://dx.doi.org/10.1139/f86-312 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-312 |
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crcansciencepubl:10.1139/f86-312 2023-12-17T10:25:06+01:00 Selective Predation by Procladius in an Arctic Alaskan Lake Hershey, Anne E. 1986 http://dx.doi.org/10.1139/f86-312 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-312 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 43, issue 12, page 2523-2528 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1986 crcansciencepubl https://doi.org/10.1139/f86-312 2023-11-19T13:38:24Z In arctic Alaskan Toolik Lake, the predatory larval chironomid Procladius spp. (Diptera) feeds on a variety of benthic organisms including algae, other chironomids, and microcrustaceans. Laboratory experiments with two similar-sized chironomid prey, instar I Chironomus and instar II Paratanytarsus, showed that Procladius was a more effective predator on Chironomus. The two prey used different foraging behaviors; Chironomus grazed an area around its tube but Paratanytarsus remained inside its tube. In a field experiment, in which Procladius density was manipulated, a decrease in prey density occurred in the chironomid group Orthocladiinae, which could be attributed to Procladius predation. Gut analyses of Procladius showed that a higher proportion of Orthocladiinae was eaten than could be predicted from their abundance. Orthocladiinae, which typically graze around tubes, may have been more susceptible to Procladius because of behavioral characteristics. Article in Journal/Newspaper Arctic Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Fisheries and Aquatic Sciences 43 12 2523 2528 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Hershey, Anne E. Selective Predation by Procladius in an Arctic Alaskan Lake |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
In arctic Alaskan Toolik Lake, the predatory larval chironomid Procladius spp. (Diptera) feeds on a variety of benthic organisms including algae, other chironomids, and microcrustaceans. Laboratory experiments with two similar-sized chironomid prey, instar I Chironomus and instar II Paratanytarsus, showed that Procladius was a more effective predator on Chironomus. The two prey used different foraging behaviors; Chironomus grazed an area around its tube but Paratanytarsus remained inside its tube. In a field experiment, in which Procladius density was manipulated, a decrease in prey density occurred in the chironomid group Orthocladiinae, which could be attributed to Procladius predation. Gut analyses of Procladius showed that a higher proportion of Orthocladiinae was eaten than could be predicted from their abundance. Orthocladiinae, which typically graze around tubes, may have been more susceptible to Procladius because of behavioral characteristics. |
format |
Article in Journal/Newspaper |
author |
Hershey, Anne E. |
author_facet |
Hershey, Anne E. |
author_sort |
Hershey, Anne E. |
title |
Selective Predation by Procladius in an Arctic Alaskan Lake |
title_short |
Selective Predation by Procladius in an Arctic Alaskan Lake |
title_full |
Selective Predation by Procladius in an Arctic Alaskan Lake |
title_fullStr |
Selective Predation by Procladius in an Arctic Alaskan Lake |
title_full_unstemmed |
Selective Predation by Procladius in an Arctic Alaskan Lake |
title_sort |
selective predation by procladius in an arctic alaskan lake |
publisher |
Canadian Science Publishing |
publishDate |
1986 |
url |
http://dx.doi.org/10.1139/f86-312 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-312 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 43, issue 12, page 2523-2528 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f86-312 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
43 |
container_issue |
12 |
container_start_page |
2523 |
op_container_end_page |
2528 |
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1785573330447761408 |