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  Visual timing abilities of a harbour seal (Phoca vitulina) and a South African fur seal (Arctocephalus pusillus pusillus) for sub- and supra-second time intervals

Heinrich, T., Ravignani, A., & Hanke, F. H. (2020). Visual timing abilities of a harbour seal (Phoca vitulina) and a South African fur seal (Arctocephalus pusillus pusillus) for sub- and supra-second time intervals. Animal Cognition, 23(5), 851-859. doi:10.1007/s10071-020-01390-3.

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Heinrich_etal_2020suppl_Visual timing abilities....docx (Supplementary material), 25KB
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This 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/.

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Heinrich, Tamara1, Author
Ravignani, Andrea2, Author           
Hanke, Frederike H.1, Author
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1University of Rostock, Rostock, Germany, ou_persistent22              
2Comparative Bioacoustics, MPI for Psycholinguistics, Max Planck Society, ou_3217299              

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 Abstract: Timing is an essential parameter influencing many behaviours. A previous study demonstrated a high sensitivity of a phocid, the harbour seal (Phoca vitulina), in discriminating time intervals. In the present study, we compared the harbour seal’s timing abilities with the timing abilities of an otariid, the South African fur seal (Arctocephalus pusillus pusillus). This comparison seemed essential as phocids and otariids differ in many respects and might, thus, also differ regarding their timing abilities. We determined time difference thresholds for sub- and suprasecond time intervals marked by a white circle on a black background displayed for a specific time interval on a monitor using a staircase method. Contrary to our expectation, the timing abilities of the fur seal and the harbour seal were comparable. Over a broad range of time intervals, 0.8–7 s in the fur seal and 0.8–30 s in the harbour seal, the difference thresholds followed Weber’s law. In this range, both animals could discriminate time intervals differing only by 12 % and 14 % on average. Timing might, thus be a fundamental cue for pinnipeds in general to be used in various contexts, thereby complementing information provided by classical sensory systems. Future studies will help to clarify if timing is indeed involved in foraging decisions or the estimation of travel speed or distance.

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Language(s): eng - English
 Dates: 2020-05-092020-09
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1007/s10071-020-01390-3
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Title: Animal Cognition
  Other : Anim. Cogn.
Source Genre: Journal
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Publ. Info: Berlin : Springer
Pages: - Volume / Issue: 23 (5) Sequence Number: - Start / End Page: 851 - 859 Identifier: ISSN: 1435-9448
CoNE: https://pure.mpg.de/cone/journals/resource/954933111396