title: Context-dependent lateralization of trunk movements in wild Asian elephants
metadata.name: dc.contributor.author
metadata.value: Giljov, Andrey
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: de Silva, Shermin
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Karenina, Karina
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2017-09-20T11:31:06Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2017-09-20T11:31:06Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2017-06
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Giljov, A., de Silva, S., and Karenina, K. 2017. Context-dependent lateralization of trunk movements in wild Asian elephants. Bio. Comm. 62(2): 82–92.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: 10.21638/11701/spbu03.2017.204
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/7138
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Asymmetrical trunk use in elephants represents a distinctive example of motor
  lateralization. Previous studies have shown that trunk movements in the
  elephant behaviour associated with feeding is lateralized at the individual, but
  not the population level. The manifestation of lateralized behaviour depends
  on the nature of the behaviour and is usually more pronounced in social context.
  Therefore, we hypothesized that population-level lateralization of trunk
  use in elephants is manifested in social behaviour. One-sided biases in trunk
  movements were assessed in wild individually-identified Asian elephants during
  feeding (tearing off a tuft of grass) and social interactions (trunk-to-mouth
  contacts and trunk-to-genitals contacts between male initiator and female recipient).
  In feeding, lateralization at the individual and population levels was
  estimated based on 50 lateral trunk uses per individual. In social interactions,
  only the population-level bias was assessed using a single trunk contact from
  each individual. For trunk movements during feeding, elephants showed robust
  individual preferences, but no population-level lateralization. The distribution
  of right- and left-trunkers in the present study did not differ significantly
  from that obtained in previous studies of both the same elephant population
  and geographically distinct population. No population-level bias in trunk movements
  during trunk-to-mouth contacts was revealed. In trunk-to-genitals contacts,
  in contrast, a population-level lateralization was found. Right-sided trunk
  movements prevailed in males touching females. While individual preferences
  for feeding, combined with the absence of one-sided population bias, is obviously
  a species-typical characteristic of Asian elephants, social behaviour, such
  as male-female socio-sexual contacts, can elicit population-level lateralization
  of trunk use in this species. The right-sided bias in trunk-to-genitals contacts
  may reflect lateralization of olfactory perception. If this is the case, the revealed
  lateralization indicates a right-hemispheric advantage in the processing of social
  information which is consistent with the general tendency in mammals.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: The study was funded by the
  Russian Science Foundation (project no. 14-14-00284) and Saint Petersburg University
  (expedition grant no. 1.42.1095.2016).
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Biological Communications;Volume 62; Issue 2
metadata.lang: -
metadata.name: dc.subject
metadata.value: laterality of trunk use
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: functional asymmetry of the trunk
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: trunk contacts
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: free-ranging Asian elephants
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: motor preferences
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: feeding
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: social laterality
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: lateralization of unpaired organs
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Context-dependent lateralization of trunk movements in wild Asian elephants
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 04-Giljov.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/7138/1/04-Giljov.pdf
resources.format: Adobe PDF
resources.size: 1,86 MB