Revisiting adaptations of neotropical katydids (Orthoptera: Tettigoniidae) to gleaning bat predation

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2017
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ter Hofstede, Hannah
Voigt-Heucke, Silke
Lang, Alexander
Römer, Heinrich
Page, Rachel
Faure, Paul
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Neotropical Biodiversity. 2017, 3(1), pp. 41-49. eISSN 2376-6808. Available under: doi: 10.1080/23766808.2016.1272314
Zusammenfassung

All animals have defenses against predators, but assessing the effectiveness of such traits is challenging. Neotropical katydids (Orthoptera: Tettigoniidae) are an abundant, ubiquitous, and diverse group of large insects eaten by a variety of predators, including substrate-gleaning bats. Gleaning bats capture food from surfaces and usually use prey-generated sounds to detect and locate prey. A number of Neotropical katydid signaling traits, such as the emission of ultrasonic frequencies, substrate vibration communication, infrequent calling, and ultrasound-evoked song cessation are thought to have evolved as defenses against substrate-gleaning bats. We collected insect remains from hairy big-eared bat (Micronycteris hirsuta) roosts in Panama. We identified insect remains to order, species, or genus and quantified the proportion of prey with defenses against predatory bats based on defenses described in the literature. Most remains were from katydids and half of those were from species with documented defenses against substrate-gleaning bats. Many culled remains were from insects that do not emit mate-calling songs (e.g. beetles, dragonflies, cockroaches, and female katydids), indicating that eavesdropping on prey signals is not the only prey-finding strategy used by this bat. Our results show that substrate-gleaning bats can occasionally overcome katydid defenses.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
570 Biowissenschaften, Biologie
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anti-predator defenses, Chiroptera, eavesdropping, Panama, predator-prey arms race
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ISO 690TER HOFSTEDE, Hannah, Silke VOIGT-HEUCKE, Alexander LANG, Heinrich RÖMER, Rachel PAGE, Paul FAURE, Dina K. N. DECHMANN, 2017. Revisiting adaptations of neotropical katydids (Orthoptera: Tettigoniidae) to gleaning bat predation. In: Neotropical Biodiversity. 2017, 3(1), pp. 41-49. eISSN 2376-6808. Available under: doi: 10.1080/23766808.2016.1272314
BibTex
@article{terHofstede2017-01-24Revis-38094,
  year={2017},
  doi={10.1080/23766808.2016.1272314},
  title={Revisiting adaptations of neotropical katydids (Orthoptera: Tettigoniidae) to gleaning bat predation},
  number={1},
  volume={3},
  journal={Neotropical Biodiversity},
  pages={41--49},
  author={ter Hofstede, Hannah and Voigt-Heucke, Silke and Lang, Alexander and Römer, Heinrich and Page, Rachel and Faure, Paul and Dechmann, Dina K. N.}
}
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