Reproductive consequences of male arrival order in the Bark beetle, Ips grandicollis

Symonds, Matthew R. E., Magrath, Michael J. L. and Latty, Tanya M. 2012, Reproductive consequences of male arrival order in the Bark beetle, Ips grandicollis, Journal of insect behavior, vol. 25, no. 4, pp. 401-407.

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Title Reproductive consequences of male arrival order in the Bark beetle, Ips grandicollis
Formatted title Reproductive consequences of male arrival order in the Bark beetle, Ips grandicollis
Author(s) Symonds, Matthew R. E.ORCID iD for Symonds, Matthew R. E. orcid.org/0000-0002-9785-6045
Magrath, Michael J. L.
Latty, Tanya M.
Journal name Journal of insect behavior
Volume number 25
Issue number 4
Start page 401
End page 407
Total pages 7
Publisher Springer
Place of publication New York, N. Y.
Publication date 2012
ISSN 0892-7553
1572-8889
Keyword(s) aggregation
harem size
pioneer
reproductive costs
Scolytinae
timing of arrival
aggregation
Summary The ability of birds to perceive, assess and appropriately respond to the presence of relatively novel threats is important to their survival. We hypothesized that the cognitive capacity of birds will influence their ability for accurate response to novelty. We used brain volume as a surrogate for cognitive capacity and postulated that larger brained birds would moderate their responses when presented with a benign, frequently occurring stimulus, such as a person, because they would habituate more readily. We conducted phylogenetic generalized least square regression to investigate the relationship between brain volume and flight initiation distance (FID; the distance to which a bird can be approached before initiating escape behaviour), while controlling for confounding factors including body size (body mass and wing length) and migration status. We compared seven different models using combinations of these parameters using Akaike's information criterion to determine the best approximating model(s) explaining FID. The two best-supported models included only wing length and only body mass with Akaike weights of 0.396 and 0.311 respectively. No model including brain volume had an Akaike weight greater than 0.083 and brain volume was poorly correlated with FID in models after controlling for body mass. Thus, brain volume does not appear to strongly relate to bravery among these shorebirds.
Language eng
Field of Research 060201 Behavioural Ecology
060309 Phylogeny and Comparative Analysis
060809 Vertebrate Biology
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2011, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30044261

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