Labelling experiments in red deer provide a general model for early bone growth dynamics in ruminants
Calderón Sánchez, Teresa (Institut Català de Paleontologia Miquel Crusafont)
Arnold, Walter (University of Veterinary Medicine. Research Institute of Wildlife Ecology (Austria))
Stalder, Gabrielle (University of Veterinary Medicine. Research Institute of Wildlife Ecology (Austria))
Painer, Johanna (University of Veterinary Medicine. Research Institute of Wildlife Ecology (Austria))
Köhler, Meike (Institut Català de Paleontologia Miquel Crusafont)

Data:	2021
Resum:	Growth rates importantly determine developmental time and are, therefore, a key variable of a species' life history. A widely used method to reconstruct growth rates and to estimate age at death in extant and particularly in fossil vertebrates is the analysis of bone tissue apposition rates. Lines of arrested growth (LAGs) are of special interest here, as they indicate a halt in bone growth. However, although of great importance, the time intervals between, and particularly the reason of growth arrests remains unknown. Therefore, experiments are increasingly called for to calibrate growth rates with tissue types and life history events, and to provide reliable measurements of the time involved in the formation of LAGs. Based on in vivo bone labelling, we calibrated periods of bone tissue apposition, growth arrest, drift and resorption over the period from birth to post-weaning in a large mammal, the red deer. We found that bone growth rates tightly matched the daily weight gain curve, i. e. decreased with age, with two discrete periods of growth rate disruption that coincided with the life history events birth and weaning, that were visually recognisable in bone tissue as either partial LAGs or annuli. Our study identified for the first time in a large mammal a general pattern for juvenile bone growth rates, including periods of growth arrest. The tight correlation between daily weight gain and bone tissue apposition suggests that the red deer bone growth model is valid for ruminants in general where the daily weight gain curve is comparable.
Ajuts:	Ministerio de Economía y Competitividad BES-2016-078938 Ministerio de Economía y Competitividad CGL-2015-63777 Ministerio de Economía y Competitividad PID2020-117118GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-960
Nota:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Bone ; Ecology ; Wide-field fluorescence microscopy
Publicat a:	Scientific reports, Vol. 11 (July 2021) , art. 14074, ISSN 2045-2322

DOI: 10.1038/s41598-021-93547-4
PMID: 34234258

14 p, 1.6 MB

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