The influence of parasitism on the life history of a high arctic insect, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae)
The life history of Gynaephora groenlandica was studied in the high arctic at Alexandra Fiord, Ellesmere Island. Life history events (larval development, pupation, adult emergence, mating, oviposition, hatching, and moulting to the second larval instar) occurred only in the 3–4 weeks before mid-July...
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1987
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crcansciencepubl:10.1139/z87-022 2024-03-03T08:36:28+00:00 The influence of parasitism on the life history of a high arctic insect, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) Kukal, Olga Kevan, Peter G. 1987 http://dx.doi.org/10.1139/z87-022 http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-022 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 65, issue 1, page 156-163 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1987 crcansciencepubl https://doi.org/10.1139/z87-022 2024-02-07T10:53:40Z The life history of Gynaephora groenlandica was studied in the high arctic at Alexandra Fiord, Ellesmere Island. Life history events (larval development, pupation, adult emergence, mating, oviposition, hatching, and moulting to the second larval instar) occurred only in the 3–4 weeks before mid-July. Larvae fed mainly on Salix arctica. They stopped feeding by the end of June, hid, and spun hibernacula. Nineteen percent of third- and fourth-instar larvae were parasitized by the wasp Hyposoter pectinatus (Ichenumonidae); 52% of fifth- and sixth-instar larvae and pupae were parasitized by the fly Exorista sp. (Tachinidae). We estimated that G. groenlandica has a life cycle lasting 14 years. Parasitism caused 56% of overall mortality, whereas cumulative winter mortality was calculated as 13% of a cohort passing through a 14-year life cycle. Peak of activity of adult parasitoids coincided with inactivity of Gynaephora larvae during July. Selective pressure of parasitism may restrict development of G. groenlandica to a short period before adult parasitoids are most active. The importance of parasitoids in the life history of G. groenlandica suggests that parasitism is as significant as climate in population regulation of insects living in the high arctic. Article in Journal/Newspaper Alexandra Fiord Arctic Ellesmere Island Canadian Science Publishing Arctic Ellesmere Island Alexandra Fiord ENVELOPE(-75.797,-75.797,78.885,78.885) Canadian Journal of Zoology 65 1 156 163 |
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 Kukal, Olga Kevan, Peter G. The influence of parasitism on the life history of a high arctic insect, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
The life history of Gynaephora groenlandica was studied in the high arctic at Alexandra Fiord, Ellesmere Island. Life history events (larval development, pupation, adult emergence, mating, oviposition, hatching, and moulting to the second larval instar) occurred only in the 3–4 weeks before mid-July. Larvae fed mainly on Salix arctica. They stopped feeding by the end of June, hid, and spun hibernacula. Nineteen percent of third- and fourth-instar larvae were parasitized by the wasp Hyposoter pectinatus (Ichenumonidae); 52% of fifth- and sixth-instar larvae and pupae were parasitized by the fly Exorista sp. (Tachinidae). We estimated that G. groenlandica has a life cycle lasting 14 years. Parasitism caused 56% of overall mortality, whereas cumulative winter mortality was calculated as 13% of a cohort passing through a 14-year life cycle. Peak of activity of adult parasitoids coincided with inactivity of Gynaephora larvae during July. Selective pressure of parasitism may restrict development of G. groenlandica to a short period before adult parasitoids are most active. The importance of parasitoids in the life history of G. groenlandica suggests that parasitism is as significant as climate in population regulation of insects living in the high arctic. |
format |
Article in Journal/Newspaper |
author |
Kukal, Olga Kevan, Peter G. |
author_facet |
Kukal, Olga Kevan, Peter G. |
author_sort |
Kukal, Olga |
title |
The influence of parasitism on the life history of a high arctic insect, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) |
title_short |
The influence of parasitism on the life history of a high arctic insect, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) |
title_full |
The influence of parasitism on the life history of a high arctic insect, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) |
title_fullStr |
The influence of parasitism on the life history of a high arctic insect, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) |
title_full_unstemmed |
The influence of parasitism on the life history of a high arctic insect, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) |
title_sort |
influence of parasitism on the life history of a high arctic insect, gynaephora groenlandica (wöcke) (lepidoptera: lymantriidae) |
publisher |
Canadian Science Publishing |
publishDate |
1987 |
url |
http://dx.doi.org/10.1139/z87-022 http://www.nrcresearchpress.com/doi/pdf/10.1139/z87-022 |
long_lat |
ENVELOPE(-75.797,-75.797,78.885,78.885) |
geographic |
Arctic Ellesmere Island Alexandra Fiord |
geographic_facet |
Arctic Ellesmere Island Alexandra Fiord |
genre |
Alexandra Fiord Arctic Ellesmere Island |
genre_facet |
Alexandra Fiord Arctic Ellesmere Island |
op_source |
Canadian Journal of Zoology volume 65, issue 1, page 156-163 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z87-022 |
container_title |
Canadian Journal of Zoology |
container_volume |
65 |
container_issue |
1 |
container_start_page |
156 |
op_container_end_page |
163 |
_version_ |
1792506987037065216 |