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Random and directed movement by Warren root collar weevils (Coleoptera: Curculionidae), relative to size and distance of host lodgepole pine trees

Balogh, Sharleen L. and Björklund, Niklas and Huber, Dezene P.W. and Lindgren, B. Staffan (2020). Random and directed movement by Warren root collar weevils (Coleoptera: Curculionidae), relative to size and distance of host lodgepole pine trees. Journal Of Insect Science (Online). 20 , 9
[Research article]

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Abstract

Hylobius warreni Wood (Coleoptera: Curculionidae) is a pest of conifers, especially lodgepole pine (Pinus contorta var. latifolia Douglas ex Loudon) (Pinales: Pinaceae) in the Interior of British Columbia. The larvae feed on the roots and root collars and cause girdling damage, resulting in mortality or growth reductions. Previous research has suggested the adult weevils locate potential host trees by using random movements and vision, but likely not chemosensory cues. The purpose of this study is to determine if adult H. warreni respond to particular tree characteristics versus encounter potential hosts at random. Study A was a capture–mark–recapture experiment where weevils were captured on mature pine trees, while Study B was a tracking experiment within a young pine plantation. Weevils showed a preference for larger trees, and for trees that were closer to the weevil’s last known location. In Study A, weevils also avoided climbing trees in poor health, while in Study B, the weevils’ preference for taller trees increased as their distance from the weevil increased, as well as when taller trees were closer to other trees. Movement rates were similar to those observed in previous studies, were positively correlated with the average spacing of trees, and declined with time after release. This confirms previous findings that H. warreni may locate host trees by both vision and random movements, and that their movements are determined primarily by the size and distribution of potential host trees within their habitat.

Authors/Creators:Balogh, Sharleen L. and Björklund, Niklas and Huber, Dezene P.W. and Lindgren, B. Staffan
Title:Random and directed movement by Warren root collar weevils (Coleoptera: Curculionidae), relative to size and distance of host lodgepole pine trees
Series Name/Journal:Journal Of Insect Science (Online)
Year of publishing :2020
Volume:20
Article number:9
Number of Pages:12
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Other Biological Topics
Keywords:Hylobius warreni, host location, visual cue, random movement, Björklund funnel trap
URN:NBN:urn:nbn:se:slu:epsilon-p-109477
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-109477
Additional ID:
Type of IDID
DOI10.1093/jisesa/ieaa063
ID Code:21130
Faculty:S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:08 Jan 2021 08:25
Metadata Last Modified:15 Jan 2021 19:17

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