Biomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)

Abstract We recorded capture events (CEs) of the daphniid Ceriodaphnia dubia by the carnivorous Southern bladderwort with suction traps (Utricularia australis). Independent to orientation and behavior during trap triggering, the animals were successfully captured within 9 ms on average and sucked in...

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Autores principales:	Simon Poppinga, Lars Erik Daber, Anna Sofia Westermeier, Sebastian Kruppert, Martin Horstmann, Ralph Tollrian, Thomas Speck
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ea1474baafb24104986708991d05bc0c
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spelling	oai:doaj.org-article:ea1474baafb24104986708991d05bc0c2021-12-02T15:05:26ZBiomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)10.1038/s41598-017-01954-32045-2322https://doaj.org/article/ea1474baafb24104986708991d05bc0c2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01954-3https://doaj.org/toc/2045-2322Abstract We recorded capture events (CEs) of the daphniid Ceriodaphnia dubia by the carnivorous Southern bladderwort with suction traps (Utricularia australis). Independent to orientation and behavior during trap triggering, the animals were successfully captured within 9 ms on average and sucked in with velocities of up to 4 m/s and accelerations of up to 2800 g. Phases of very high acceleration during onsets of suction were immediately followed by phases of similarly high deceleration (max.: −1900 g) inside the bladders, leading to immobilization of the prey which then dies. We found that traps perform a ‘forward strike’ during suction and that almost completely air-filled traps are still able to perform suction. The trigger hairs on the trapdoors can undergo strong bending deformation, which we interpret to be a safety feature to prevent fracture. Our results highlight the elaborate nature of the Utricularia suction traps which are functionally resilient and leave prey animals virtually no chance to escape.Simon PoppingaLars Erik DaberAnna Sofia WestermeierSebastian KruppertMartin HorstmannRalph TollrianThomas SpeckNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Simon Poppinga Lars Erik Daber Anna Sofia Westermeier Sebastian Kruppert Martin Horstmann Ralph Tollrian Thomas Speck Biomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)
description	Abstract We recorded capture events (CEs) of the daphniid Ceriodaphnia dubia by the carnivorous Southern bladderwort with suction traps (Utricularia australis). Independent to orientation and behavior during trap triggering, the animals were successfully captured within 9 ms on average and sucked in with velocities of up to 4 m/s and accelerations of up to 2800 g. Phases of very high acceleration during onsets of suction were immediately followed by phases of similarly high deceleration (max.: −1900 g) inside the bladders, leading to immobilization of the prey which then dies. We found that traps perform a ‘forward strike’ during suction and that almost completely air-filled traps are still able to perform suction. The trigger hairs on the trapdoors can undergo strong bending deformation, which we interpret to be a safety feature to prevent fracture. Our results highlight the elaborate nature of the Utricularia suction traps which are functionally resilient and leave prey animals virtually no chance to escape.
format	article
author	Simon Poppinga Lars Erik Daber Anna Sofia Westermeier Sebastian Kruppert Martin Horstmann Ralph Tollrian Thomas Speck
author_facet	Simon Poppinga Lars Erik Daber Anna Sofia Westermeier Sebastian Kruppert Martin Horstmann Ralph Tollrian Thomas Speck
author_sort	Simon Poppinga
title	Biomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)
title_short	Biomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)
title_full	Biomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)
title_fullStr	Biomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)
title_full_unstemmed	Biomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)
title_sort	biomechanical analysis of prey capture in the carnivorous southern bladderwort (utricularia australis)
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/ea1474baafb24104986708991d05bc0c
work_keys_str_mv	AT simonpoppinga biomechanicalanalysisofpreycaptureinthecarnivoroussouthernbladderwortutriculariaaustralis AT larserikdaber biomechanicalanalysisofpreycaptureinthecarnivoroussouthernbladderwortutriculariaaustralis AT annasofiawestermeier biomechanicalanalysisofpreycaptureinthecarnivoroussouthernbladderwortutriculariaaustralis AT sebastiankruppert biomechanicalanalysisofpreycaptureinthecarnivoroussouthernbladderwortutriculariaaustralis AT martinhorstmann biomechanicalanalysisofpreycaptureinthecarnivoroussouthernbladderwortutriculariaaustralis AT ralphtollrian biomechanicalanalysisofpreycaptureinthecarnivoroussouthernbladderwortutriculariaaustralis AT thomasspeck biomechanicalanalysisofpreycaptureinthecarnivoroussouthernbladderwortutriculariaaustralis
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Biomechanical analysis of prey capture in the carnivorous Southern bladderwort (Utricularia australis)

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