title: Mirrors inhibit growth and stimulate lateralized response to prey in larvae of the Mexican axolotl Ambystoma mexicanum
metadata.name: dc.contributor.author
metadata.value: Ognevaja, Ekaterina
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Lajus, Dmitry
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Izvekov, Evgeny
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Nepomnyashchikh, Valentin
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Malashichev, Yegor
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2018-09-03T13:06:10Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2018-09-03T13:06:10Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018-06
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Ognevaja, E., Lajus, D., Izvekov, E., Nepomnyashchikh, V., and Malashichev, Y. 2017. Mirrors inhibit growth and stimulate lateralized response to prey in larvae of the Mexican axolotl Ambystoma mexicanum. Bio. Comm. 63(2): 133–139.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: 10.21638/spbu03.2018.206
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/14761
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Laterality of brain and behavior at the individual and/or group level is a characteristic
  of all vertebrate classes, including amphibians. It is well recognized that
  the right-eye/left-hemisphere system is more efficient in discrimination of edible
  and non-edible items. However, the ontogenesis of this or other lateralized
  responses has rarely been investigated. Here we present the first evidence of
  ontogenesis of right-eye/left-hemisphere response to live food in the Mexican
  axolotl, Ambystoma mexicanum. Furthermore, we test a possible influence of
  mirror images imitating the presence of conspecifics on laterality of the reaction
  to food, as well as on the growth and development of axolotls; we then
  compare the results to those known for anuran tadpoles. We placed the newly
  hatched axolotls into aquaria either with transparent or mirror walls individually
  (first experiment), or in a group of 25 animals (second experiment). The
  larvae were fed Artemia salina nauplii and regularly scored for the number and
  direction (either left or right) of their attacks towards the prey. Body length
  was measured twice a month. The statistically significant lateralized response
  to food was first detected in only three-week-old larvae and was right-sided,
  suggesting processing of visual information in the left brain hemisphere. At the
  same age, the left hemisphere seems to start its specialization in more efficient
  perception of prey. In both experiments we found a significant difference
  between the larvae growing in the transparent and mirror aquaria, with a tendency
  towards a stronger right-sided lateralization in the mirror aquaria. Also,
  the mirror walls inhibited larval growth, especially at the age of 60–75 days. A
  similar phenomenon is known in overcrowding of anuran tadpoles, which is
  discussed in terms of visual brain stimulation.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: The work was performed using
  the infrastructure of the Resource Centre
  “Observatory of Environmental Safety”,
  Research Park, Saint Petersburg State
  University. The work was supported by
  Russian Science Foundation (project
  14‑14‑00284 to YM).
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 63; Issue 2
metadata.lang: -
metadata.name: dc.subject
metadata.value: Mexican axolotl
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Ambystoma mexicanum
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: caudate amphibians
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: lateralized response to food
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: response to mirrors
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: ontogenesis of lateralization
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: perceptual lateralization
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: larvae growth
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: unihemispheric visual stimulation
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Mirrors inhibit growth and stimulate lateralized response to prey in larvae of the Mexican axolotl Ambystoma mexicanum
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 06-Ognevaja.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/14761/1/06-Ognevaja.pdf
resources.format: Adobe PDF
resources.size: 249,04 kB