File(s) under permanent embargo
Individual-level, context-dependent handedness in the desert locust
journal contribution
posted on 2023-06-08, 22:37 authored by Jeremy NivenJeremy Niven, Adrian T A BellDespite evidence of asymmetries in insect sensory perception and motor control, there is no direct evidence for functional left-right asymmetry in their limb control--handedness--equivalent to that of vertebrates such as humans (reviewed in [1,2]). Here, we show that locusts are biased in the forelimb they use to reach across a gap in the substrate upon which they are walking. The strength of this bias differed among individuals, as did the forelimb, some locusts favouring their right forelimb more often, others their left. In contrast, the locusts' forelimb movements immediately prior to reaching, or whilst walking, were unbiased. This pattern was repeated when the gap was replaced with a glass platform; forelimb use was unbiased when stepping onto the glass surface but biased when stepping onto the other side. Thus, locusts show handedness during targeted forelimb placement, but not whilst walking, the switch initiated by visual inputs. This handedness is context-dependent and is expressed by individuals rather than at the population level.
History
Publication status
- Published
File Version
- Published version
Journal
Current BiologyISSN
0960-9822Publisher
ElsevierExternal DOI
Issue
10Volume
24Page range
R382-R383Department affiliated with
- Neuroscience Publications
Full text available
- No
Peer reviewed?
- Yes