Advanced

Irregular walks and loops combines in small-scale movement of a soil insect: implications for dispersal biology

Bengtsson, Göran LU ; Nilsson, Elna LU ; Rydén, Tobias LU and Wiktorsson, Magnus LU (2004) In Journal of Theoretical Biology 231(2). p.299-306
Abstract
Analysis of small-scale movement patterns of animals we may help to understand and predict movement at a larger scale, such as dispersal, which is a key parameter in spatial population dynamics. We have chosen to study the movement of a soil-dwelling Collembola, Protaphorura armata, in an experimental system consisting of a clay surface with or without physical obstacles. A combination of video recordings, descriptive statistics, and walking simulations was used to evaluate the movement pattern. Individuals were found to link periods of irregular walk with those of looping in a homogeneous environment as well as in one structured to heterogeneity by physical obstacles. The number of loops varied between 0 and 44 per hour from one... (More)
Analysis of small-scale movement patterns of animals we may help to understand and predict movement at a larger scale, such as dispersal, which is a key parameter in spatial population dynamics. We have chosen to study the movement of a soil-dwelling Collembola, Protaphorura armata, in an experimental system consisting of a clay surface with or without physical obstacles. A combination of video recordings, descriptive statistics, and walking simulations was used to evaluate the movement pattern. Individuals were found to link periods of irregular walk with those of looping in a homogeneous environment as well as in one structured to heterogeneity by physical obstacles. The number of loops varied between 0 and 44 per hour from one individual to another and some individuals preferred to make loops by turning right and others by turning left. P. armata spent less time at the boundary of small obstacles compared to large, presumably because of a lower probability to track the steepness of the curvature as the individual walks along a highly curved surface. Food deprived P. armata had a more winding movement and made more circular loops than those that were well fed. The observed looping behaviour is interpreted in the context of systematic search strategies and compared with similar movement patterns found in other species. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Theoretical Biology
volume
231
issue
2
pages
299 - 306
publisher
Academic Press
external identifiers
  • wos:000224438000015
  • pmid:15380394
  • scopus:4544258435
ISSN
1095-8541
DOI
10.1016/j.jtbi.2004.06.025
language
English
LU publication?
yes
id
51c50682-0846-4440-80da-0c76ddaa13f1 (old id 135805)
date added to LUP
2007-06-27 08:21:29
date last changed
2017-04-02 04:06:22
@article{51c50682-0846-4440-80da-0c76ddaa13f1,
  abstract     = {Analysis of small-scale movement patterns of animals we may help to understand and predict movement at a larger scale, such as dispersal, which is a key parameter in spatial population dynamics. We have chosen to study the movement of a soil-dwelling Collembola, Protaphorura armata, in an experimental system consisting of a clay surface with or without physical obstacles. A combination of video recordings, descriptive statistics, and walking simulations was used to evaluate the movement pattern. Individuals were found to link periods of irregular walk with those of looping in a homogeneous environment as well as in one structured to heterogeneity by physical obstacles. The number of loops varied between 0 and 44 per hour from one individual to another and some individuals preferred to make loops by turning right and others by turning left. P. armata spent less time at the boundary of small obstacles compared to large, presumably because of a lower probability to track the steepness of the curvature as the individual walks along a highly curved surface. Food deprived P. armata had a more winding movement and made more circular loops than those that were well fed. The observed looping behaviour is interpreted in the context of systematic search strategies and compared with similar movement patterns found in other species.},
  author       = {Bengtsson, Göran and Nilsson, Elna and Rydén, Tobias and Wiktorsson, Magnus},
  issn         = {1095-8541},
  language     = {eng},
  number       = {2},
  pages        = {299--306},
  publisher    = {Academic Press},
  series       = {Journal of Theoretical Biology},
  title        = {Irregular walks and loops combines in small-scale movement of a soil insect: implications for dispersal biology},
  url          = {http://dx.doi.org/10.1016/j.jtbi.2004.06.025},
  volume       = {231},
  year         = {2004},
}