Chasing behaviour and optomotor following in free-flying male blowflies: flight performance and interactions of the underlying control systems

The chasing behaviour of male blowflies after small targets belongs to the most rapid and virtuosic visually guided behaviours found in nature. Since in a structured environment any turn towards a target inevitably leads to a displacement of the entire retinal image in the opposite direction, it mig...

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Main Authors: Christine Trischler, Roland Kern, Martin Egelhaaf
Format: Article
Language:English
Published: Frontiers Media S.A. 2010-05-01
Series:Frontiers in Behavioral Neuroscience
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fnbeh.2010.00020/full
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author Christine Trischler
Roland Kern
Martin Egelhaaf
author_facet Christine Trischler
Roland Kern
Martin Egelhaaf
author_sort Christine Trischler
collection DOAJ
description The chasing behaviour of male blowflies after small targets belongs to the most rapid and virtuosic visually guided behaviours found in nature. Since in a structured environment any turn towards a target inevitably leads to a displacement of the entire retinal image in the opposite direction, it might evoke optomotor following responses counteracting the turn. To analyse potential interactions between the control systems underlying chasing behaviour and optomotor following, respectively, we performed behavioural experiments on male blowflies and examined the characteristics of the two flight control systems in isolation and in combination. Three findings are particularly striking. (i) The characteristic saccadic flight and gaze style – a distinctive feature of blowfly cruising flights – is largely abandoned when the entire visual surroundings move around the fly; in this case flies tend to follow the moving pattern in a relatively continuous and smooth way. (ii) When male flies engage in following a small target, they also employ a smooth pursuit strategy. (iii) Although blowflies are reluctant to fly at high background velocities, the performance and dynamical characteristics of the chasing system are not much affected when the background moves in either the same or in the opposite direction as the target. Hence, the optomotor following response is largely suppressed by the chasing system and does not much impair chasing performance.
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spelling doaj.art-0b0bc66ded3842f88d2f6c1d9f03b6752022-12-22T02:37:22ZengFrontiers Media S.A.Frontiers in Behavioral Neuroscience1662-51532010-05-01410.3389/fnbeh.2010.000201182Chasing behaviour and optomotor following in free-flying male blowflies: flight performance and interactions of the underlying control systemsChristine Trischler0Roland Kern1Martin Egelhaaf2Cognitive Interaction Technology, Bielefeld University Cognitive Interaction Technology, Bielefeld University Cognitive Interaction Technology, Bielefeld University The chasing behaviour of male blowflies after small targets belongs to the most rapid and virtuosic visually guided behaviours found in nature. Since in a structured environment any turn towards a target inevitably leads to a displacement of the entire retinal image in the opposite direction, it might evoke optomotor following responses counteracting the turn. To analyse potential interactions between the control systems underlying chasing behaviour and optomotor following, respectively, we performed behavioural experiments on male blowflies and examined the characteristics of the two flight control systems in isolation and in combination. Three findings are particularly striking. (i) The characteristic saccadic flight and gaze style – a distinctive feature of blowfly cruising flights – is largely abandoned when the entire visual surroundings move around the fly; in this case flies tend to follow the moving pattern in a relatively continuous and smooth way. (ii) When male flies engage in following a small target, they also employ a smooth pursuit strategy. (iii) Although blowflies are reluctant to fly at high background velocities, the performance and dynamical characteristics of the chasing system are not much affected when the background moves in either the same or in the opposite direction as the target. Hence, the optomotor following response is largely suppressed by the chasing system and does not much impair chasing performance.http://journal.frontiersin.org/Journal/10.3389/fnbeh.2010.00020/fullEye Movementssaccadecontrol systemsflyoptomotor followingvisual pursuit
spellingShingle Christine Trischler
Roland Kern
Martin Egelhaaf
Chasing behaviour and optomotor following in free-flying male blowflies: flight performance and interactions of the underlying control systems
Frontiers in Behavioral Neuroscience
Eye Movements
saccade
control systems
fly
optomotor following
visual pursuit
title Chasing behaviour and optomotor following in free-flying male blowflies: flight performance and interactions of the underlying control systems
title_full Chasing behaviour and optomotor following in free-flying male blowflies: flight performance and interactions of the underlying control systems
title_fullStr Chasing behaviour and optomotor following in free-flying male blowflies: flight performance and interactions of the underlying control systems
title_full_unstemmed Chasing behaviour and optomotor following in free-flying male blowflies: flight performance and interactions of the underlying control systems
title_short Chasing behaviour and optomotor following in free-flying male blowflies: flight performance and interactions of the underlying control systems
title_sort chasing behaviour and optomotor following in free flying male blowflies flight performance and interactions of the underlying control systems
topic Eye Movements
saccade
control systems
fly
optomotor following
visual pursuit
url http://journal.frontiersin.org/Journal/10.3389/fnbeh.2010.00020/full
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AT rolandkern chasingbehaviourandoptomotorfollowinginfreeflyingmaleblowfliesflightperformanceandinteractionsoftheunderlyingcontrolsystems
AT martinegelhaaf chasingbehaviourandoptomotorfollowinginfreeflyingmaleblowfliesflightperformanceandinteractionsoftheunderlyingcontrolsystems