Acoustic Behavior and Feeding in Glossophagine Bats

Howell, D. J.

doi:10.2307/1378999

Cited by 58 publications

(60 citation statements)

References 17 publications

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“…Other bats have been shown to use multiple foraging tactics (Faure and Barclay, 1994;Ratcliffe and Dawson, 2003;Levin et al, 2009), and it is likely that most bats will catch insects on the wing when possible (Fenton, 1990). In fact, even primarily frugivorous and nectarivorous bats have been shown to catch insects on the wing opportunistically (Howell, 1974). Thus it is in line with previous research on bats' foraging adaptability that O. hemprichii is able to aerial hawk.…”

Section: Discussionsupporting

confidence: 81%

A whispering bat that screams: bimodal switch of foraging guild from gleaning to aerial-hawking in the desert long-eared bat

Hackett

Korine

Holderied

2014

Journal of Experimental Biology

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Echolocating bats have historically been classified as either loud aerial hawkers or whispering gleaners. Some bat species can forage in multiple ways and others have demonstrated limited flexibility in the amplitude of their echolocation calls. The desert long-eared bat, Otonycteris hemprichii, has been said to be a passive gleaning whispering bat preying on terrestrial arthropods such as scorpions. Using an acoustic tracking system, we recorded individuals flying at foraging and drinking sites and compared their flight height, flight speed, call duration, pulse interval and source levels with those of gleaning individuals previously recorded using the same setup. We found differences in all variables with the strongest difference in source levels, where bats called at a mean of 119 dB peSPL (compared with 75 dB peSPL when gleaning). Bat faecal analysis indicated that their diet differed from previous studies and that prey species were capable of flight. We conclude that the bats switched from passive gleaning to capturing airborne insects (aerial hawking). Although whispering bats have been known to opportunistically catch insects on the wing, in the present study we show a full bimodal switch between foraging guilds with the respective changes in source level to those typical of a true aerial hawker.

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Section: Discussionsupporting

confidence: 81%

A whispering bat that screams: bimodal switch of foraging guild from gleaning to aerial-hawking in the desert long-eared bat

Hackett

Korine

Holderied

2014

Journal of Experimental Biology

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“…Although Artibeus, Carollia, and Glossophaga generally feed on plant sources, it is clear that they also frequently consume significant quantities of insects (Arata et al 1967, Fleming et al 1972, Howell 1974, Howell & Burch 1974, rev. by Rasweiler 1975, 1977, rev.…”

Section: Discussionmentioning

confidence: 99%

Experimental transmission of the parasitic flagellates Trypanosoma cruzi and Trypanosoma rangeli between triatomine bugs or mice and captive neotropical bats

Thomas

Rasweiler

D’Alessandro

2007

Mem. Inst. Oswaldo Cruz

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“…Since leaf-nosed bats echolocate (e.g., Barclay et al 1981;Belwood 1988;Howell 1974) and produce short, multiharmonic, downward frequency-modulated (FM) signals of low sound pressure level (SPL), they could possibly use echolocation to perform those tasks. Short, broadband FM signals are well suited for exact localization and spectral characterization of targets (e.g., Schnitzler and Henson 1980;Simmons et al 1995).…”

Section: Introductionmentioning

confidence: 99%

The roles of echolocation and olfaction in two Neotropical fruit-eating bats, Carollia perspicillata and C. castanea , feeding on Piper

Thies

Kalko

Schnitzler

1998

Behavioral Ecology and Sociobiology

207

224

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We studied the echolocation and foraging behavior of two Neotropical frugivorous leaf-nosed bats (Carollia perspicillata, C. castanea: Phyllostomidae) in ā ight cage. To test which cues Carollia uses to detect, identify, and localize ripe Piper fruit, their preferred natural food, we conducted experiments under seminatural conditions with ripe, unripe, and arti®cal fruits. We ®rst oered the bats ripe fruits and documented their foraging behavior using multi¯ash stereophotography combined with simultaneous sound recordings. Both species showed a similar, stereotyped foraging pattern. In search¯ight, the bats circled through the¯ight cage in search of a branch with ripe fruit. After ®nding such a branch, the bats switched to approach behavior, consisting of multiple exploration¯ights and the ®nal approach when the bats picked up the fruit at its tip and tore it o in¯ight. Our behavioral experiments revealed that odor plays an important role in enabling Carollia to ®nd ripe fruit. While foraging, Carollia always echolocated and produced multiharmonic, frequency-modulated (FM) signals of broad bandwidth, high frequency, short duration, and low intensity. We discriminated an orientation phase (mostly a single pulse per wingbeat) and an approach phase (groups of two to six pulses per wing beat). We conclude from the bats' behavioral reaction to real and arti®cial fruit as well as from characteristic patterns in their echolocation behavior that during exploration¯ights, Carollia changes from primarily odor-oriented detection and initial localization of ripe fruit to a primarily echo-oriented ®nal localization of the position of the fruit.

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Acoustic Behavior and Feeding in Glossophagine Bats

Cited by 58 publications

References 17 publications

A whispering bat that screams: bimodal switch of foraging guild from gleaning to aerial-hawking in the desert long-eared bat

A whispering bat that screams: bimodal switch of foraging guild from gleaning to aerial-hawking in the desert long-eared bat

Experimental transmission of the parasitic flagellates Trypanosoma cruzi and Trypanosoma rangeli between triatomine bugs or mice and captive neotropical bats

The roles of echolocation and olfaction in two Neotropical fruit-eating bats, Carollia perspicillata and C. castanea , feeding on Piper

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