EMERGENCE, HOST ATTACK, AND OVERWINTERING BEHAVIOR OF THE EASTERN LARCH BEETLE, DENDROCTONUS SIMPLEX LECONTE (COLEOPTERA: SCOLYTIDAE), IN NEWFOUNDLAND
Abstract Overwintered adults of Dendroctonus simplex LeConte emerged in May and June. One generation and two broods were produced in both 1983 and 1984. Females initiated attacks and males arrived within 2 days. One to four pairs of beetles used each entrance hole but each pair constructed a separat...
Published in: | The Canadian Entomologist |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Cambridge University Press (CUP)
1987
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Online Access: | http://dx.doi.org/10.4039/ent119975-11 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0008347X00048902 |
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crcambridgeupr:10.4039/ent119975-11 2024-06-23T07:54:46+00:00 EMERGENCE, HOST ATTACK, AND OVERWINTERING BEHAVIOR OF THE EASTERN LARCH BEETLE, DENDROCTONUS SIMPLEX LECONTE (COLEOPTERA: SCOLYTIDAE), IN NEWFOUNDLAND Langor, David W. Raske, Arthur G. 1987 http://dx.doi.org/10.4039/ent119975-11 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0008347X00048902 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms The Canadian Entomologist volume 119, issue 11, page 975-983 ISSN 0008-347X 1918-3240 journal-article 1987 crcambridgeupr https://doi.org/10.4039/ent119975-11 2024-06-12T04:04:54Z Abstract Overwintered adults of Dendroctonus simplex LeConte emerged in May and June. One generation and two broods were produced in both 1983 and 1984. Females initiated attacks and males arrived within 2 days. One to four pairs of beetles used each entrance hole but each pair constructed a separate egg gallery. Emergence, host attack, and re-emergence occurred between 1030 and 1700 hours NDT and at mean air temperatures above 4°C. Peaks of attack, which reflect flight peaks, occurred at temperatures above 10°C. About 90% of all parents re-emerged from first brood trees and 61% from second brood trees. Only adults overwintered. Freezing temperatures caused complete mortality of immature stages. Thirty-five percent of new brood adults emerged in the fall and re-entered galleries at the base of trees for hibernation. Adult tolerance to cold increased from early fall to mid-winter. Article in Journal/Newspaper Newfoundland Cambridge University Press The Canadian Entomologist 119 11 975 983 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Overwintered adults of Dendroctonus simplex LeConte emerged in May and June. One generation and two broods were produced in both 1983 and 1984. Females initiated attacks and males arrived within 2 days. One to four pairs of beetles used each entrance hole but each pair constructed a separate egg gallery. Emergence, host attack, and re-emergence occurred between 1030 and 1700 hours NDT and at mean air temperatures above 4°C. Peaks of attack, which reflect flight peaks, occurred at temperatures above 10°C. About 90% of all parents re-emerged from first brood trees and 61% from second brood trees. Only adults overwintered. Freezing temperatures caused complete mortality of immature stages. Thirty-five percent of new brood adults emerged in the fall and re-entered galleries at the base of trees for hibernation. Adult tolerance to cold increased from early fall to mid-winter. |
format |
Article in Journal/Newspaper |
author |
Langor, David W. Raske, Arthur G. |
spellingShingle |
Langor, David W. Raske, Arthur G. EMERGENCE, HOST ATTACK, AND OVERWINTERING BEHAVIOR OF THE EASTERN LARCH BEETLE, DENDROCTONUS SIMPLEX LECONTE (COLEOPTERA: SCOLYTIDAE), IN NEWFOUNDLAND |
author_facet |
Langor, David W. Raske, Arthur G. |
author_sort |
Langor, David W. |
title |
EMERGENCE, HOST ATTACK, AND OVERWINTERING BEHAVIOR OF THE EASTERN LARCH BEETLE, DENDROCTONUS SIMPLEX LECONTE (COLEOPTERA: SCOLYTIDAE), IN NEWFOUNDLAND |
title_short |
EMERGENCE, HOST ATTACK, AND OVERWINTERING BEHAVIOR OF THE EASTERN LARCH BEETLE, DENDROCTONUS SIMPLEX LECONTE (COLEOPTERA: SCOLYTIDAE), IN NEWFOUNDLAND |
title_full |
EMERGENCE, HOST ATTACK, AND OVERWINTERING BEHAVIOR OF THE EASTERN LARCH BEETLE, DENDROCTONUS SIMPLEX LECONTE (COLEOPTERA: SCOLYTIDAE), IN NEWFOUNDLAND |
title_fullStr |
EMERGENCE, HOST ATTACK, AND OVERWINTERING BEHAVIOR OF THE EASTERN LARCH BEETLE, DENDROCTONUS SIMPLEX LECONTE (COLEOPTERA: SCOLYTIDAE), IN NEWFOUNDLAND |
title_full_unstemmed |
EMERGENCE, HOST ATTACK, AND OVERWINTERING BEHAVIOR OF THE EASTERN LARCH BEETLE, DENDROCTONUS SIMPLEX LECONTE (COLEOPTERA: SCOLYTIDAE), IN NEWFOUNDLAND |
title_sort |
emergence, host attack, and overwintering behavior of the eastern larch beetle, dendroctonus simplex leconte (coleoptera: scolytidae), in newfoundland |
publisher |
Cambridge University Press (CUP) |
publishDate |
1987 |
url |
http://dx.doi.org/10.4039/ent119975-11 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0008347X00048902 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
The Canadian Entomologist volume 119, issue 11, page 975-983 ISSN 0008-347X 1918-3240 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.4039/ent119975-11 |
container_title |
The Canadian Entomologist |
container_volume |
119 |
container_issue |
11 |
container_start_page |
975 |
op_container_end_page |
983 |
_version_ |
1802647032300568576 |