دورية أكاديمية
أعرض في EDS

The Killer Fly Hunger Games: Target Size and Speed Predict Decision to Pursuit.

التفاصيل البيبلوغرافية
العنوان: The Killer Fly Hunger Games: Target Size and Speed Predict Decision to Pursuit.
المؤلفون: Wardill TJ; Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK., Knowles K, Barlow L, Tapia G, Nordström K, Olberg RM, Gonzalez-Bellido PT
المصدر: Brain, behavior and evolution [Brain Behav Evol] 2015 Sep; Vol. 86 (1), pp. 28-37. Date of Electronic Publication: 2015 Sep 24.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.
اللغة: English
بيانات الدورية: Publisher: Karger Country of Publication: Switzerland NLM ID: 0151620 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1421-9743 (Electronic) Linking ISSN: 00068977 NLM ISO Abbreviation: Brain Behav Evol Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Basel, New York, Karger.
مواضيع طبية MeSH: Spatial Behavior*, Decision Making/*physiology , Insecta/*physiology , Predatory Behavior/*physiology , Size Perception/*physiology, Animals ; Photic Stimulation ; Probability ; Time Factors ; Time Perception ; Video Recording
مستخلص: Predatory animals have evolved to optimally detect their prey using exquisite sensory systems such as vision, olfaction and hearing. It may not be so surprising that vertebrates, with large central nervous systems, excel at predatory behaviors. More striking is the fact that many tiny insects, with their miniscule brains and scaled down nerve cords, are also ferocious, highly successful predators. For predation, it is important to determine whether a prey is suitable before initiating pursuit. This is paramount since pursuing a prey that is too large to capture, subdue or dispatch will generate a substantial metabolic cost (in the form of muscle output) without any chance of metabolic gain (in the form of food). In addition, during all pursuits, the predator breaks its potential camouflage and thus runs the risk of becoming prey itself. Many insects use their eyes to initially detect and subsequently pursue prey. Dragonflies, which are extremely efficient predators, therefore have huge eyes with relatively high spatial resolution that allow efficient prey size estimation before initiating pursuit. However, much smaller insects, such as killer flies, also visualize and successfully pursue prey. This is an impressive behavior since the small size of the killer fly naturally limits the neural capacity and also the spatial resolution provided by the compound eye. Despite this, we here show that killer flies efficiently pursue natural (Drosophila melanogaster) and artificial (beads) prey. The natural pursuits are initiated at a distance of 7.9 ± 2.9 cm, which we show is too far away to allow for distance estimation using binocular disparities. Moreover, we show that rather than estimating absolute prey size prior to launching the attack, as dragonflies do, killer flies attack with high probability when the ratio of the prey's subtended retinal velocity and retinal size is 0.37. We also show that killer flies will respond to a stimulus of an angular size that is smaller than that of the photoreceptor acceptance angle, and that the predatory response is strongly modulated by the metabolic state. Our data thus provide an exciting example of a loosely designed matched filter to Drosophila, but one which will still generate successful pursuits of other suitable prey.
(© 2015 The Author(s) Published by S. Karger AG, Basel.)
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معلومات مُعتمدة: BB/L024667/1 United Kingdom BB_ Biotechnology and Biological Sciences Research Council
تواريخ الأحداث: Date Created: 20150924 Date Completed: 20160701 Latest Revision: 20210109
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC4612549
DOI: 10.1159/000435944
PMID: 26398293
قاعدة البيانات: MEDLINE
الوصف
تدمد:1421-9743
DOI:10.1159/000435944