2016
DOI: 10.1007/s10071-016-1020-3
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Harbour seals (Phoca vitulina) are able to time precisely

Abstract: Time along with space is one of the two fundamental dimensions of life. Whereas spatial aspects have been considered in experiments with marine mammals, research has so far not focused on timing per se although it is most likely involved in many behaviours such as foraging or navigation. This study investigated whether harbour seals possess a sense of time and how precisely they are able to discriminate time intervals. Experiments took place in a chamber that allowed keeping ambient illumination constant at 40… Show more

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Cited by 14 publications
(37 citation statements)
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“…In general, Weber's law holds for a wide range of time intervals in pinniped timing. The harbour seal's timing Weber fractions of the harbour seal for the STIs from 0.1 s to 30 s. The timing data for STIs 3 s to 30 s were adopted from Heinrich et al (2016). c Weber fractions of the harbour seal for the tested STIs from 0.1 s to 1.6 s and of the South African fur seal for STI from 0.2 s to 1.6 s (closed chamber/low ambient light).…”
Section: Discussionmentioning
confidence: 99%
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“…In general, Weber's law holds for a wide range of time intervals in pinniped timing. The harbour seal's timing Weber fractions of the harbour seal for the STIs from 0.1 s to 30 s. The timing data for STIs 3 s to 30 s were adopted from Heinrich et al (2016). c Weber fractions of the harbour seal for the tested STIs from 0.1 s to 1.6 s and of the South African fur seal for STI from 0.2 s to 1.6 s (closed chamber/low ambient light).…”
Section: Discussionmentioning
confidence: 99%
“…The fur seal's timing performance can be characterised by a mean Weber fraction of 0.12 for STIs ranging from 0.8 s to 7 s in the experimental condition with closed chamber. Calculating the mean Weber fractions for the harbour seal for the STI ranging from 0.8 s to 7 s as tested for the fur seal and thereby combining the results of this and the first harbour seal timing study (Heinrich et al 2016), a mean Weber fraction of 0.13 results. The subtle, but not significant difference (one-sided unpaired t-test for independent samples F=0.…”
Section: Discussionmentioning
confidence: 99%
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