Lemur biorhythms life history evolution

Russell T. Hogg, Laurie R. Godfrey, Gary T. Schwartz, Wendy Dirks, Timothy Bromage

Research output: Contribution to journalArticle

Abstract

Skeletal histology supports the hypothesis that primate life histories are regulated by a neuroendocrine rhythm, the Havers-Halberg Oscillation (HHO). Interestingly, subfossil lemurs are outliers in HHO scaling relationships that have been discovered for haplorhine primates and other mammals. We present new data to determine whether these species represent the general lemur or strepsirrhine condition and to inform models about neuroendocrine-mediated life history evolution. We gathered the largest sample to date of HHO data from histological sections of primate teeth (including the subfossil lemurs) to assess the relationship of these chronobiological measures with life history-related variables including body mass, brain size, age at first female reproduction, and activity level. For anthropoids, these variables show strong correlations with HHO conforming to predictions, though body mass and endocranial volume are strongly correlated with HHO periodicity in this group. However, lemurs (possibly excepting Daubentonia) do not follow this pattern and show markedly less variability in HHO periodicity and lower correlation coefficients and slopes. Moreover, body mass is uncorrelated, and brain size and activity levels are more strongly correlated with HHO periodicity in these animals. We argue that lemurs evolved this pattern due to selection for risk-averse life histories driven by the unpredictability of the environment in Madagascar. These results reinforce the idea that HHO influences life history evolution differently in response to specific ecological selection regimes.

Original languageEnglish (US)
Article numbere0134210
JournalPLoS One
Volume10
Issue number8
DOIs
StatePublished - Aug 12 2015

Fingerprint

Lemur
biological rhythms
Periodicity
oscillation
life history
Lemuridae
Brain
Primates
Histology
Mammals
periodicity
Animals
Madagascar
Haplorhini
Reproduction
Tooth
brain
histology
teeth
mammals

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Hogg, R. T., Godfrey, L. R., Schwartz, G. T., Dirks, W., & Bromage, T. (2015). Lemur biorhythms life history evolution. PLoS One, 10(8), [e0134210]. https://doi.org/10.1371/journal.pone.0134210

Lemur biorhythms life history evolution. / Hogg, Russell T.; Godfrey, Laurie R.; Schwartz, Gary T.; Dirks, Wendy; Bromage, Timothy.

In: PLoS One, Vol. 10, No. 8, e0134210, 12.08.2015.

Research output: Contribution to journalArticle

Hogg, RT, Godfrey, LR, Schwartz, GT, Dirks, W & Bromage, T 2015, 'Lemur biorhythms life history evolution', PLoS One, vol. 10, no. 8, e0134210. https://doi.org/10.1371/journal.pone.0134210
Hogg RT, Godfrey LR, Schwartz GT, Dirks W, Bromage T. Lemur biorhythms life history evolution. PLoS One. 2015 Aug 12;10(8). e0134210. https://doi.org/10.1371/journal.pone.0134210
Hogg, Russell T. ; Godfrey, Laurie R. ; Schwartz, Gary T. ; Dirks, Wendy ; Bromage, Timothy. / Lemur biorhythms life history evolution. In: PLoS One. 2015 ; Vol. 10, No. 8.
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