Gleaning bat echolocation calls do not elicit antipredator behaviour in the Pacific field cricket, Teleogryllus oceanicus (Orthoptera: Gryllidae) Export

@article{Hofstede_2009_gleaning, abstract = {Abstract\ \ Bats that glean prey (capture them from surfaces) produce relatively inconspicuous echolocation calls compared to aerially foraging bats and could therefore be difficult predators to detect, even for insects with ultrasound sensitive ears. In the cricket Teleogryllus oceanicus, an auditory interneuron (AN2) responsive to ultrasound is known to elicit turning behaviour, but only when the cricket is in flight. Turning would not save a cricket from a gleaning bat so we tested the hypothesis that AN2 elicits more appropriate antipredator behaviours when crickets are on the ground. The echolocation calls of Nyctophilus geoffroyi, a sympatric gleaning bat, were broadcast to singing male and walking female T. oceanicus. Males did not cease singing and females did not pause walking more than usual in response to the bat calls up to intensities of 82\ dB peSPL. Extracellular recordings from the cervical connective revealed that the echolocation calls elicited AN2 action potentials at high firing rates, indicating that the crickets could hear these stimuli. AN2 appears to elicit antipredator behaviour only in flight, and we discuss possible reasons for this context-dependent function.}, author = {Hofstede, Hannah T. and Killow, Joanne and Fullard, James}, citeulike-article-id = {4935517}, citeulike-linkout-0 = {http://dx.doi.org/10.1007/s00359-009-0454-3}, citeulike-linkout-1 = {http://www.springerlink.com/content/axr07402t3w2g203}, day = {1}, doi = {10.1007/s00359-009-0454-3}, journal = {Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology}, keywords = {auditory, bat, behavior, coding, context, cricket, song}, month = {August}, number = {8}, pages = {769--776}, posted-at = {2009-08-11 09:16:15}, priority = {2}, title = {Gleaning bat echolocation calls do not elicit antipredator behaviour in the Pacific field cricket, Teleogryllus oceanicus (Orthoptera: Gryllidae)}, url = {http://dx.doi.org/10.1007/s00359-009-0454-3}, volume = {195}, year = {2009} }

TY - JOUR ID - Hofstede_2009_gleaning L3 - citeulike-article-id:4935517 N2 - Abstract  Bats that glean prey (capture them from surfaces) produce relatively inconspicuous echolocation calls compared to aerially foraging bats and could therefore be difficult predators to detect, even for insects with ultrasound sensitive ears. In the cricket Teleogryllus oceanicus, an auditory interneuron (AN2) responsive to ultrasound is known to elicit turning behaviour, but only when the cricket is in flight. Turning would not save a cricket from a gleaning bat so we tested the hypothesis that AN2 elicits more appropriate antipredator behaviours when crickets are on the ground. The echolocation calls of Nyctophilus geoffroyi, a sympatric gleaning bat, were broadcast to singing male and walking female T. oceanicus. Males did not cease singing and females did not pause walking more than usual in response to the bat calls up to intensities of 82 dB peSPL. Extracellular recordings from the cervical connective revealed that the echolocation calls elicited AN2 action potentials at high firing rates, indicating that the crickets could hear these stimuli. AN2 appears to elicit antipredator behaviour only in flight, and we discuss possible reasons for this context-dependent function. IS - 8 JF - Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology EP - 776 TI - Gleaning bat echolocation calls do not elicit antipredator behaviour in the Pacific field cricket, Teleogryllus oceanicus (Orthoptera: Gryllidae) VL - 195 SP - 769 KW - auditory KW - bat KW - behavior KW - coding KW - context KW - cricket KW - song AU - Hofstede, Hannah AU - Killow, Joanne AU - Fullard, James PY - 2009/August/01/ UR - http://dx.doi.org/10.1007/s00359-009-0454-3 ER -