ArticlePloS one2018
Limb bone histology records birth in mammals.
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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22 citing papers in PubMed, 37 citations in OpenAlex.
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- Bone histology of Neogene angulate tortoises (Testudines: Testudinidae) from South Africa: palaeobiological and skeletochronological implications.Royal Society open science · 2023Article
- The origin of placental mammal life histories.Nature · 2022Article
- Palaeohistology reveals a slow pace of life for the dwarfed Sicilian elephant.Scientific reports · 2021Article
- Intraskeletal bone growth patterns in the North Island Brown Kiwi (Apteryx mantelli): Growth mark discrepancy and implications for extinct taxa.Journal of anatomy · 2021Article
- Labelling experiments in red deer provide a general model for early bone growth dynamics in ruminants.Scientific reports · 2021Article
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- Living fast in the Triassic: New data on life history in Lystrosaurus (Therapsida: Dicynodontia) from northeastern Pangea.PloS one · 2021Article
- Ontogenetic changes of tissue compartmentalization and bone type distribution in the humerus of Soay sheep.Journal of anatomy · 2020Article
- Calibration of life history traits with epiphyseal closure, dental eruption and bone histology in captive and wild red deer.Journal of anatomy · 2019Article
- Bone histology provides insights into the life history mechanisms underlying dwarfing in hipparionins.Scientific reports · 2018Article
- Osteohistological signal from the smallest known phytosaur femur reveals slow growth and new insights into the evolution of growth in Archosauria.Journal of anatomyArticle
- Intraskeletal histovariability and skeletochronology in an ornithopod dinosaur from the Maestrazgo Basin (Teruel, Spain).Journal of anatomyArticle
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The annual cyclicality of cortical bone growth marks (BGMs) allows reconstruction of some important life history traits, such as longevity, growth rate or age at maturity. Little attention has been paid, however, to non-cyclical BGMs, though some record key life history events such as hatching (egg-laying vertebrates), metamorphosis (amphibians), or weaning (suggested for Microcebus and the hedgehog). Here, we investigate the relationship between non-cyclical BGMs and a stressful biological event in mammals: the moment of birth. In the present study, we histologically examine ontogenetic series of femora, tibiae and metapodia in several extant representatives of the genus Equus (E. hemionus, E. quagga and E. grevyi). Our analysis reveals the presence of a non-cyclical growth mark that is deposited around the moment of birth, analogous to the neonatal line described for teeth. We therefore refer to it as neonatal line. The presence of this feature within the bone cross-section agrees with a period of growth arrest in newborn foals regulated by the endocrine system. The neonatal line is accompanied by modifications in bone tissue type and vascularization, and has been identified in all bones studied and at different ontogenetic ages. Our discovery of a non-cyclical BGM related to the moment of birth in mammals is an important step towards the histological reconstruction of life histories in extant and fossil equids.
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