title: Palmar flexion creases and finger linkage groups in New World monkeys — functional and evolutionary palmistry
metadata.name: dc.contributor.author
metadata.value: Novikova, Mellin
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kuznetsov, Alexander
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2018-02-28T14:47:45Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2018-02-28T14:47:45Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2017-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Novikova, M., and Kuznetsov, A. 2017. Palmar flexion creases and finger linkage groups in New World monkeys — functional and evolutionary palmistry Bio. Comm. 62(3): 181–201.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: 10.21638/11701/spbu03.2017.304
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/9205
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Manipulatory abilities and activities of primate hands are crucially important
  for humanity’s understanding of our own species, and they have been very well
  studied in diverse aspects. However, there remains a surprising ignorance as to
  the variety of flexion creases on primate palms and their functional and evolutionary
  significance. Here we present the first extensive attempt to fill this gap.
  Major attention is paid to New World monkeys known for the diversity of their
  grasping adaptations, which exceeds that of prosimians, Old World monkeys
  and apes together. The presented analysis is based on the assumption that
  the palmar flexion creases border groups of fingers which are used together —
  which we suggest naming “finger linkage groups”. We show that this assumption
  is in agreement with what is known about hand usage in locomotion and
  manipulation by different primates. Here we show that the Life Line bordering
  the thumb is present in all primates manifesting the basic ability of thumb
  opposition, which can be enhanced (like in humans or capuchins) or reduced
  (like in marmosets or spider monkeys). Longitudinal creases (Fate Line) seem to
  have appeared early in evolution, as they are present in lemurs, marmosets,
  and some Old World monkeys; typically, two longitudinal creases are present
  (humans show one as a variation). The longitudinal creases were replaced in
  simian evolution by transversal ones, of which the most common is the Simian
  Line bordering fingers II–V and facilitating a power grip by these four fingers
  against the palm. This four–finger crease is the only type of transversal creases
  known in Old World monkeys and apes (the last have two such creases). In marmosets
  the transversal crease borders all five fingers, while in schizodactylous
  New World Monkeys it borders only the three last fingers. Apart from them,
  such a three–finger crease, known as the Heart Line, is found in humans only.
  However, its origin is different. In human evolution, it was most likely produced
  by a breakage of the ancestral Simian Line into two, the second half being represented
  by the unique human Head Line. This breakage dislinked the index
  finger from the power grip, allowing for pointing gestures and individual usage
  of this finger.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This work was supported by the
  Russian Foundation for Basic Research
  (grants 15-04-05049 and 17-04-00954).
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 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: palmar flexion creases
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: finger linkage groups
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Platyrrhini
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: functional morphology
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Palmar flexion creases and finger linkage groups in New World monkeys — functional and evolutionary palmistry
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 04_Novikova.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/9205/1/04_Novikova.pdf
resources.format: Adobe PDF
resources.size: 4,94 MB