Vocalizations in the Malagasy Cave-Dwelling Fruit Bat, Eidolon dupreanum: Possible Evidence of Incipient Echolocation?

@inproceedings{Schoeman2012VocalizationsIT,
  title={Vocalizations in the Malagasy Cave-Dwelling Fruit Bat, Eidolon dupreanum: Possible Evidence of Incipient Echolocation?},
  author={M. Corrie Schoeman and Steven M. Goodman},
  year={2012}
}
The vocalizations of the Malagasy endemic fruit bat, Eidolon dupreanum (family Pteropodidae) were previously not documented. Individuals of this species, which make day roost sites in rock crevices or the dark zones within caves, were recorded while exiting a cave in the Parc National d'Ankarana. Individuals leaving a roost at dusk were recorded 200 m and 35 m inside the cave, as well as two sites outside the cave. Visible light in the cave dropped to 0 lux about 50 m from the entrance. While… Expand
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References

SHOWING 1-10 OF 41 REFERENCES
Echolocation Performance and Call Structure in the Megachiropteran Fruit-Bat Rousettus aegyptiacus
TLDR
The structure of the calls made by the echolocating fruit bat Rousettus aegyptiacus while flying within a flight tunnel were investigated, and the possession of both a good visual system, and a good eCholocation system in this species has implications for the evolution of e cholocation in bats. Expand
Sensitivity of echolocation in cave swiftlets.
TLDR
Although oilbirds and swiftlets can certainly avoid large obstacles by echoloca tion, there is very little evidence concerning their proficiency, and the authors know almost nothing about the minimum size of object that can be detected. Expand
Vocal Communication in the Grey-Headed Flying-Fox Pteropus Poliocephalus (Chiroptera: Pteropodidae)
TLDR
The vocalisations emitted by adult and juvenile Grey-headed Flying-foxes Pteropus poliocephalus within daytime camps and night nurseries were studied using audio and video data and the motor action associated with each call type was categorised. Expand
Social calls coordinate foraging in greater spear-nosed bats
TLDR
Observations of free-ranging greater spear-nosed bats, Phyllostomus hastatus, and field playbacks determine whether audible, broad-band 'screech' calls attract mates, warn conspecifics or influence access to food, and suggest that females benefit from foraging with unrelated roost-mates because they can defend feeding sites more effectively. Expand
Presence of single as well as double clicks in the echolocation signals of a fruit bat, Rousettus leschenaulti (Chiroptera : Pteropodidae)
TLDR
The use of simple, brief impulsive clicks and the reduction of interpulse interval and duration, when approaching the sides of the walls suggest that the echolocating fruit bat Rousettus leschenaulti have a good capability of obstacle avoidance as similar to microchiropteran bats. Expand
The feeding ecology of Eidolon dupreanum (Pteropodidae) in eastern Madagascar
TLDR
The role of fruit bats as seed dispersers in forest ecosystems in Madagascar should be used as an additional leverage for their conservation. Expand
Echolocation signal structure in the Megachiropteran bat Rousettus aegyptiacus Geoffroy 1810
TLDR
It is shown that the echolocation signals of R. aegyptiacus match the minimum spectral spread for their duration and amplitude and are thus well matched to its best hearing sensitivity, however, the low energy content of the signals and short duration should make returning echoes difficult to detect. Expand
Nectarivory by endemic malagasy fruit bats during the dry season
TLDR
It is suggested that both baobabs and bats are candidate “flagship species” for the threatened dry forests of Madagascar and recommended increased levels of protection, education awareness, and applied research on both mammal-pollinated baobab species and fruit bats. Expand
Echolocation in free-flying Atiu Swiftlets (Aerodramus sawtelli)
TLDR
Spectral analyses indicate that the birds do not adjust the peak frequencies of their calls as they fly within the cave and it is suggested the bird does not systematically structure the frequency content of its calls. Expand
Phylogenetic relationships of the Papuan Swiftlet Aerodramus papuensis and implications for the evolution of avian echolocation
TLDR
The phylogeny provides new insights into how echolocation has evolved in the swiftlets, in particular by indicating higher levels of homoplasy in this trait than was previously thought. Expand
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