Hydrodynamic reception in the Australian water rat, Hydromys chrysogaster

The Australian water rat, Hydromys chrysogaster, preys on a wide variety of aquatic and semiaquatic arthropods and vertebrates, including fish. A frequently observed predatory strategy of Hydromys is sitting in wait at the water's edge with parts of its vibrissae submersed. Here we show that Hy...

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Detalles Bibliográficos
Autores principales: Hanke, Wolf, Meyer, Sabine, Bleckmann, Horst, Dehnhardt, Guido
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Original Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7314732/
https://www.ncbi.nlm.nih.gov/pubmed/32306057
http://dx.doi.org/10.1007/s00359-020-01416-8
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author Hanke, Wolf
Meyer, Sabine
Bleckmann, Horst
Dehnhardt, Guido
author_facet Hanke, Wolf
Meyer, Sabine
Bleckmann, Horst
Dehnhardt, Guido
author_sort Hanke, Wolf
collection PubMed
description The Australian water rat, Hydromys chrysogaster, preys on a wide variety of aquatic and semiaquatic arthropods and vertebrates, including fish. A frequently observed predatory strategy of Hydromys is sitting in wait at the water's edge with parts of its vibrissae submersed. Here we show that Hydromys can detect water motions with its whiskers. Behavioural thresholds range from 1.0 to 9.4 mm s(−1) water velocity, based on maximal horizontal water velocity in the area covered by the whiskers. This high sensitivity to water motions would enable Hydromys to detect fishes passing by. No responses to surface waves generated by a vibrating rod and resembling the surface waves caused by struggling insects were found. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00359-020-01416-8) contains supplementary material, which is available to authorized users.
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spelling pubmed-73147322020-06-26 Hydrodynamic reception in the Australian water rat, Hydromys chrysogaster Hanke, Wolf Meyer, Sabine Bleckmann, Horst Dehnhardt, Guido J Comp Physiol A Neuroethol Sens Neural Behav Physiol Original Paper The Australian water rat, Hydromys chrysogaster, preys on a wide variety of aquatic and semiaquatic arthropods and vertebrates, including fish. A frequently observed predatory strategy of Hydromys is sitting in wait at the water's edge with parts of its vibrissae submersed. Here we show that Hydromys can detect water motions with its whiskers. Behavioural thresholds range from 1.0 to 9.4 mm s(−1) water velocity, based on maximal horizontal water velocity in the area covered by the whiskers. This high sensitivity to water motions would enable Hydromys to detect fishes passing by. No responses to surface waves generated by a vibrating rod and resembling the surface waves caused by struggling insects were found. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s00359-020-01416-8) contains supplementary material, which is available to authorized users. Springer Berlin Heidelberg 2020-04-18 2020 /pmc/articles/PMC7314732/ /pubmed/32306057 http://dx.doi.org/10.1007/s00359-020-01416-8 Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Original Paper
Hanke, Wolf
Meyer, Sabine
Bleckmann, Horst
Dehnhardt, Guido
Hydrodynamic reception in the Australian water rat, Hydromys chrysogaster
title Hydrodynamic reception in the Australian water rat, Hydromys chrysogaster
title_full Hydrodynamic reception in the Australian water rat, Hydromys chrysogaster
title_fullStr Hydrodynamic reception in the Australian water rat, Hydromys chrysogaster
title_full_unstemmed Hydrodynamic reception in the Australian water rat, Hydromys chrysogaster
title_short Hydrodynamic reception in the Australian water rat, Hydromys chrysogaster
title_sort hydrodynamic reception in the australian water rat, hydromys chrysogaster
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7314732/
https://www.ncbi.nlm.nih.gov/pubmed/32306057
http://dx.doi.org/10.1007/s00359-020-01416-8
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