CORDIS - Forschungsergebnisse der EU
CORDIS

A bat's-ear view of natural soundscapes during flight

Projektbeschreibung

Weltneuheit läutet neue Ära der Erforschung der Sinnesökologie ein

Echoortende Tiere wie zum Beispiel Fledertiere senden Ultraschallwellen in den sie umgebenden Raum aus. Die von den vorhandenen Objekten reflektierten Echosignale helfen ihnen, ihre Umgebung zu verstehen und in ihr zu navigieren. Studien zufolge wissen Fledertiere sehr genau über ihre Echoortungsfähigkeiten Bescheid. Uns fehlt es jedoch an Informationen darüber, wie sie diese in den Ökosystemen in freier Wildbahn anwenden. Das EU-finanzierte Projekt BATVIEW wird eine bahnbrechende Lösung für die Erforschung der Echoortung bei einzelnen Fledertieren bieten, die in freier Natur Nahrung im Flug erbeuten. Im Rahmen der Projektarbeit wird die Sinnes- und Futtersuchökologie bei einer August-Krogh-Art, der Fransenlippenfledermaus, erforscht und geklärt, wie der sensorische Informationsfluss in der freien Natur Verhaltensänderungen steuert.

Ziel

The knowledge of sensory systems is of central importance for our understanding of life. The brain commands the behaviour, but it banks on sensory input to do so. Biosonar is a particularly enticing sensory system to study. A seemingly exotic sense, it is in fact the main sensory modality of one in five mammalian species and it bears the big advantage that we can tap directly into the sensory stream. The echolocator only receives information when it emits sound, exerting full control over the information flow while allowing us to eavesdrop. From lab studies with bats, we thus have profuse knowledge of their striking biosonar capabilities, but paradoxically very little knowledge about how bats use these capabilities to play ecologically and economically critical roles in a large suite of ecosystems in the wild, under conditions for which they evolved. BATVIEW will utilize a unique, world-first solution to the problem of how to study echolocation of individual bats catching prey on the wing in the wild. BATVIEWs host lab has very recently developed a 2.6g ultrasound-recording and inertial-sensing tag for free-flying bats. Along with logging detailed information on flight and capture behaviour, the tag records not only the bat?s outgoing calls but also the weak returning echoes for an entire night of foraging. With such high-quality quantitative data in the form of echograms and synchronised accelerometer readings, I will answer fundamental questions of sensory and foraging ecology in an August-Krogh species, the fringe-lipped bat. In accomplishing BATVIEW?s objectives, I will (A) gain a clear and reliable assessment of the percept that biosonar provides, in order to determine (B) how the percept changes dependent on (C) different ambient conditions and (D) different behavioural contexts. BATVIEW will offer an unprecedented understanding of how sensory information flow governs behavioural transitions in the wild and pave the way into a new era of sensory ecology.

Koordinator

AARHUS UNIVERSITET
Netto-EU-Beitrag
€ 207 312,00
Adresse
NORDRE RINGGADE 1
8000 Aarhus C
Dänemark

Auf der Karte ansehen

Region
Danmark Midtjylland Østjylland
Aktivitätstyp
Higher or Secondary Education Establishments
Links
Gesamtkosten
€ 207 312,00