Identifying donkey domestication through changes in cross-sectional geometry of long bones

Laura Shackelford, Fiona Marshall, Joris Peters

Research output: Contribution to journalArticle

Abstract

The initial phases of donkey domestication are difficult to identify in the archaeological record due to late and inconsistent changes in morphology and body size in the earliest domestics. Use of donkeys for load carrying and the management of captive herds resulted in a distinctive behavioral shift away from the free-ranging speed and mobility characteristic of wild asses toward slower, more steady pacing. Given the ability of bone to adapt to its mechanical environment, bone remodeling in the limbs of wild asses and donkeys are evaluated using cross-sectional geometry to determine whether weight bearing or locomotor differences between the wild and domestic forms may be used to recognize early domestication. Cross-sectional data were collected on the humeri, radii, metacarpals and metatarsals of eight wild ass and six donkey skeletons. Wild ass forelimbs have greater overall strength and more cylindrical humeral diaphyses, indicating better resistance to a varied locomotor repertoire. These results demonstrate that analyses of shaft geometry can provide information on changes in locomotor behavior during domestication. Our finding that shifts in gait had greater effects on the morphology of early domestic donkeys than did load-carrying places a new emphasis on understanding selection for gait changes in domestication dynamics.

Original languageEnglish (US)
Pages (from-to)4170-4179
Number of pages10
JournalJournal of Archaeological Science
Volume40
Issue number12
DOIs
StatePublished - Jan 1 2013

Fingerprint

mathematics
ability
management
Domestication
Donkey
Geometry

Keywords

  • Biomechanics
  • Domestication
  • Equus africanus
  • Equus asinus

ASJC Scopus subject areas

  • Archaeology
  • Archaeology

Cite this

Identifying donkey domestication through changes in cross-sectional geometry of long bones. / Shackelford, Laura; Marshall, Fiona; Peters, Joris.

In: Journal of Archaeological Science, Vol. 40, No. 12, 01.01.2013, p. 4170-4179.

Research output: Contribution to journalArticle

@article{762cc2e2faea42a5826d5ba6c6f6f338,
title = "Identifying donkey domestication through changes in cross-sectional geometry of long bones",
abstract = "The initial phases of donkey domestication are difficult to identify in the archaeological record due to late and inconsistent changes in morphology and body size in the earliest domestics. Use of donkeys for load carrying and the management of captive herds resulted in a distinctive behavioral shift away from the free-ranging speed and mobility characteristic of wild asses toward slower, more steady pacing. Given the ability of bone to adapt to its mechanical environment, bone remodeling in the limbs of wild asses and donkeys are evaluated using cross-sectional geometry to determine whether weight bearing or locomotor differences between the wild and domestic forms may be used to recognize early domestication. Cross-sectional data were collected on the humeri, radii, metacarpals and metatarsals of eight wild ass and six donkey skeletons. Wild ass forelimbs have greater overall strength and more cylindrical humeral diaphyses, indicating better resistance to a varied locomotor repertoire. These results demonstrate that analyses of shaft geometry can provide information on changes in locomotor behavior during domestication. Our finding that shifts in gait had greater effects on the morphology of early domestic donkeys than did load-carrying places a new emphasis on understanding selection for gait changes in domestication dynamics.",
keywords = "Biomechanics, Domestication, Equus africanus, Equus asinus",
author = "Laura Shackelford and Fiona Marshall and Joris Peters",
year = "2013",
month = "1",
day = "1",
doi = "10.1016/j.jas.2013.06.006",
language = "English (US)",
volume = "40",
pages = "4170--4179",
journal = "Journal of Archaeological Science",
issn = "0305-4403",
publisher = "Academic Press Inc.",
number = "12",

}

TY - JOUR

T1 - Identifying donkey domestication through changes in cross-sectional geometry of long bones

AU - Shackelford, Laura

AU - Marshall, Fiona

AU - Peters, Joris

PY - 2013/1/1

Y1 - 2013/1/1

N2 - The initial phases of donkey domestication are difficult to identify in the archaeological record due to late and inconsistent changes in morphology and body size in the earliest domestics. Use of donkeys for load carrying and the management of captive herds resulted in a distinctive behavioral shift away from the free-ranging speed and mobility characteristic of wild asses toward slower, more steady pacing. Given the ability of bone to adapt to its mechanical environment, bone remodeling in the limbs of wild asses and donkeys are evaluated using cross-sectional geometry to determine whether weight bearing or locomotor differences between the wild and domestic forms may be used to recognize early domestication. Cross-sectional data were collected on the humeri, radii, metacarpals and metatarsals of eight wild ass and six donkey skeletons. Wild ass forelimbs have greater overall strength and more cylindrical humeral diaphyses, indicating better resistance to a varied locomotor repertoire. These results demonstrate that analyses of shaft geometry can provide information on changes in locomotor behavior during domestication. Our finding that shifts in gait had greater effects on the morphology of early domestic donkeys than did load-carrying places a new emphasis on understanding selection for gait changes in domestication dynamics.

AB - The initial phases of donkey domestication are difficult to identify in the archaeological record due to late and inconsistent changes in morphology and body size in the earliest domestics. Use of donkeys for load carrying and the management of captive herds resulted in a distinctive behavioral shift away from the free-ranging speed and mobility characteristic of wild asses toward slower, more steady pacing. Given the ability of bone to adapt to its mechanical environment, bone remodeling in the limbs of wild asses and donkeys are evaluated using cross-sectional geometry to determine whether weight bearing or locomotor differences between the wild and domestic forms may be used to recognize early domestication. Cross-sectional data were collected on the humeri, radii, metacarpals and metatarsals of eight wild ass and six donkey skeletons. Wild ass forelimbs have greater overall strength and more cylindrical humeral diaphyses, indicating better resistance to a varied locomotor repertoire. These results demonstrate that analyses of shaft geometry can provide information on changes in locomotor behavior during domestication. Our finding that shifts in gait had greater effects on the morphology of early domestic donkeys than did load-carrying places a new emphasis on understanding selection for gait changes in domestication dynamics.

KW - Biomechanics

KW - Domestication

KW - Equus africanus

KW - Equus asinus

UR - http://www.scopus.com/inward/record.url?scp=84880811140&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880811140&partnerID=8YFLogxK

U2 - 10.1016/j.jas.2013.06.006

DO - 10.1016/j.jas.2013.06.006

M3 - Article

VL - 40

SP - 4170

EP - 4179

JO - Journal of Archaeological Science

JF - Journal of Archaeological Science

SN - 0305-4403

IS - 12

ER -