Projects Projects Projects Projects Projects

Collaborative Projects have their own page ... ...

Examples of current Bat Projects

  • Echolocation and behavioral reactions to sudden target movements (Prey removal - Signe Brinkløv and AS with Lutz Wiegrebe and Conny Geberl LMU, Munich. )

  • Acoustic field of view compared to "attention space" in Myotis daubentonii trawling for insects in the lab (AS, Katrine Hulgard, Randi Pedersen)

  • Analysing a new auditory scene in Eptesicus fuscus (Lasse Jakobsen, AS, with Cindy Moss and Ben Falk, Johns Hopkins U, Baltimore, USA)

  • Beam directionality in Macrophyllum macrophyllum Panama (Mads Olsen, Lasse Jakobsen, AS)

  • Flight pattern and echolocation in the field in Eptesicus fuscus (Katrine Hulgard, AS, Cindy Moss Johns Hopkins, Baltimore, USA)

  • Biomimetic robots orienting by echolocation (CBR - Centre for BioRobotics, SDU)

  • Relating head morphology (ear, mouth, nose) and movement to echolocation features during echolocation and passive listening in Phyllostomus (Signe Brinkløv and AS with Lutz Wiegrebe, LMU, Munich)

  • Bats in pairs, Myotis daubentonii and Rhinolophus capensis (AS, Kayleigh Fawcett, and John Ratcliffe, U.Toronto, Mississauga, Canada)

  • Comparative directional hearing in bats and porpoises (AS, Signe Brinkløv, Maria Wilson with Magnus Wahlberg, Jakob Christensen-Dalsgaard)

  • Vision in bats: psychophysics and biophysics of Myotis daubentonii and Nyctalus noctula (Clement Cechetto, Cecilie Jensen, AS with Eric Warrant, Lund, Sweden)

  • Multimodal integration (smell and sound) in moths with Bente G. Berg and Gerit Pfuhl, Trondheim, Norway

Past Projects  

New method for estimating sonar beam directivity (Francesco and John H. in collaboration with Lasse, AS).
Guarato F., Hallam J., Jakobsen L., Surlykke, A. and Vanderelst, D. (2011) A method for estimating the orientation of a directional sound source from source directivity and multi-microphone recordings: principles and application. J. Acoust. Soc. Am. 129 (2): 1046—1058.
Significance of frequency alternation in Saccopteryx bilineata (John, Lasse, As)
Ratcliffe J.M., Jakobsen, L., Kalko, E.K.V., Surlykke, A. (2011) Frequency alternation and an offbeat rhythm indicate foraging behavior in the echolocating bat, Saccopteryx bilineata. J. Comp. Physiol. DOI 10.1007/s00359-011-0630-0.
Do fish with ultrasonic hearing react with evasive manoeuvres to dolphin sonar sounds? ( As)
Wilson, M., Schack, H.B., Madsen, P.T., Surlykke, A. Wahlberg, M. (2011) Directional escape behavior and energy detection in allis shad (Alosa alosa) exposed to ultrasonic clicks mimicking an approaching toothed whale. J.Exp.Biol. 214: 22—29. doi:10.1242/jeb.043323.
Directionality of the sonar beam of a nose emitting phyllostomid bat (Signe et al.)
Brinkløv, S., Jakobsen, L., Ratcliffe, J.M., Kalko, E.K.V., Surlykke, A. (2011) Echolocation call intensity and directionality in flying short-tailed fruit bats, Carollia perspicillata (Phyllostomidae) J. Acoust. Soc. Am. 129 (1): 427—435. DOI: 10.1121/1.3519396.
Very quiet ultrasound production in pyralid moths (as)
Takanashi, T., Nakano, R., Surlykke, A., Tatsuta, H., Tabata, J. Ishikawa, Y., Skals, N. (2010) Variation in Courtship Ultrasounds of Three Ostrinia Moths with Different Sex Pheromones. PLoS ONE 5(10): e13144. doi:10.1371/journal.pone.0013144.
Auditory scene analysis in echolocating bats (AS)
Moss, C.F., Surlykke, A. (2010) Probing the Natural Scene by Echolocation Frontiers of Behavioral Neuroscience, Special issue on Neuroethology. doi: 10.3389/fnbeh.2010.00033.
Influence of habitat and clutter on sonar sound intensity (Signe et al.)
Brinkløv, S., Kalko, E.K.V., Surlykke, A. (2010) Dynamic adjustment of biosonar intensity to habitat clutter in the bat Macrophyllum macrophyllum (Phyllostomidae) Behav. Ecol. Sociobiol. 64:1867—1874 DOI 10.1007/s00265-010-0998-9.
Widening the sonar sound beam in the last phases of the pursuit (Lasse AS)
Jakobsen, L., Surlykke, A. (2010) Vespertilionid bats control the width of their biosonar sound beam dynamically during prey pursuit PNAS. 107 (31) 13930—13935; doi:10.1073/pnas.1006630107.
Male moths make sounds to make females "freeze" to facilitate mating (AS)
Nakano, R., Takanashi, T., Skals, N., Surlykke, A., Ishikawa, Y. (2010) To females of a noctuid moth, male courtship songs are nothing more than bat echolocation calls. Biol. Lett. (2010) 6, 582—584. doi:10.1098/rsbl.2010.0058.
Nakano, R., Takanashi, T., Skals, N., Surlykke, A., Ishikawa, Y. (2010) Ultrasonic courtship songs of male Asian corn borer moths assist copulation attempts by making the females motionless. Physiol. Entomol. 35, 76—81.
Quiet sound production is much more common in moths than previously believed (AS)
Nakano, R., Takanashi, T., Fujii, T., Skals, N., Surlykke, A., Ishikawa, Y. (2009) Moths are not silent, but whisper ultrasonic courtship songs. J. Exp. Biol. 212: 4072—4078
Bats scan objects one-by-one by pointing their sonar beam directly at each object sequentially
Surlykke, A., Ghose, K., Moss, C.M. (2009) Acoustic scanning of natural scenes by echolocation in the big brown bat, Eptesicus fuscus. J. Exp. Biol. 212: 1011—1020.
Determination of sonar sound beam shape from bats flying freely in the wild. Revealed link between directivity and intensity
Surlykke, A., Pedersen, S.B., Jakobsen, L. (2009) Echolocating bats emit a highly directional sonar sound beam in the field. Proc. R. Soc. B 276: 853—860.
Emitted intensity in phyllostomid bats.
Brinkløv, S., Kalko, E.K.V., Surlykke, A. (2009) Intense echolocation calls from two "whispering" bats, Artibeus jamaicensis and Macrophyllum macrophyllum (Phyllostomidae). J. Exp. Biol. 212: 11—20.
Batlab, Institute of Biology, University of Southern Denmark