Maintaining genetic integrity of coexisting wild and domestic populations

Genetic differentiation between wild and domestic Rangifer with long traditions of intentional interbreeding

David G. Anderson (Corresponding Author), Kjersti S. Kvie, Vladimir N. Davydov, Knut H. Røed

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Abstract

This study investigates the genetic effect of an indigenous tradition of deliberate and controlled interbreeding between wild and domestic Rangifer. The results are interpreted in the context of conservation concerns and debates on the origin of domestic animals. The study is located in Northeastern Zabaĭkal’e, Russia at approximately 57 degrees North latitude. Blood and skin samples, collected from wild and domestic Rangifer, are analysed for their mtDNA and microsatellite signatures. Local husbandry traditions are documented ethnographically. The genetic data is analysed with special reference to indigenous understandings of the distinctions between local domestic types and wild Rangifer. The genetic results demonstrate a strong differentiation between wild and domestic populations. We found a stronger differentiation between pooled wild and domestic reindeer in mtDNA comparison to the nuclear microsatellites, which suggests male-mediated gene flow between the two gene pools. The nuclear microsatellite results also point to distinct differences between regional domestic clusters. Our results indicate that the Evenki herders have an effective breeding technique which, while mixing pedigrees in the short-term, guards against wholesale introgression between wild and domestic populations over the long-term. They support a model of domestication where wild males and domestic females are selectively interbred, without hybridizing the two populations. Our conclusions inform a debate on the origins of domestication by documenting a situation where both wild and domestic types are in constant interaction. The study further informs a debate in conservation biology by demonstrating that certain types of controlled introgression between wild and domestic types need not reduce genetic diversity.
Original languageEnglish
Pages (from-to)6790-6802
Number of pages13
JournalEcology and Evolution
Volume7
Issue number17
Early online date26 Jul 2017
DOIs
Publication statusPublished - Sep 2017

Fingerprint

Rangifer
domestication
introgression
genetic differentiation
population genetics
microsatellite repeats
genetic variation
mitochondrial DNA
gene flow
skin
reindeer
breeding methods
blood
domestic animals
skin (animal)
pedigree
Russia
gene
animal
Biological Sciences

Keywords

  • domestication
  • Evenki
  • ndigenous animal husbandry
  • interbreeding
  • introgression
  • male-mediated gene flow
  • reindeer husbandry
  • reproductive isolation
  • Russia

Cite this

@article{140a73878a434671879d0b489f4ba525,
title = "Maintaining genetic integrity of coexisting wild and domestic populations: Genetic differentiation between wild and domestic Rangifer with long traditions of intentional interbreeding",
abstract = "This study investigates the genetic effect of an indigenous tradition of deliberate and controlled interbreeding between wild and domestic Rangifer. The results are interpreted in the context of conservation concerns and debates on the origin of domestic animals. The study is located in Northeastern Zabaĭkal’e, Russia at approximately 57 degrees North latitude. Blood and skin samples, collected from wild and domestic Rangifer, are analysed for their mtDNA and microsatellite signatures. Local husbandry traditions are documented ethnographically. The genetic data is analysed with special reference to indigenous understandings of the distinctions between local domestic types and wild Rangifer. The genetic results demonstrate a strong differentiation between wild and domestic populations. We found a stronger differentiation between pooled wild and domestic reindeer in mtDNA comparison to the nuclear microsatellites, which suggests male-mediated gene flow between the two gene pools. The nuclear microsatellite results also point to distinct differences between regional domestic clusters. Our results indicate that the Evenki herders have an effective breeding technique which, while mixing pedigrees in the short-term, guards against wholesale introgression between wild and domestic populations over the long-term. They support a model of domestication where wild males and domestic females are selectively interbred, without hybridizing the two populations. Our conclusions inform a debate on the origins of domestication by documenting a situation where both wild and domestic types are in constant interaction. The study further informs a debate in conservation biology by demonstrating that certain types of controlled introgression between wild and domestic types need not reduce genetic diversity.",
keywords = "domestication, Evenki, ndigenous animal husbandry, interbreeding, introgression, male-mediated gene flow, reindeer husbandry, reproductive isolation, Russia",
author = "Anderson, {David G.} and Kvie, {Kjersti S.} and Davydov, {Vladimir N.} and R{\o}ed, {Knut H.}",
note = "The funding for the fieldwork and laboratory work for this study was provided by the ERC Advanced Grant 295458 Arctic Domus (PI D.G. Anderson). The writing and analysis was supported by ESRC ES-M0110548-1 JPI HUMANOR (PI D.G. Anderson). The sample set for Lake Nichatka was collected and deposited under a research programme of the Norwegian Institute for Nature Research. We thank Liv Midthjell for skilful laboratory analyses, Konstantin Klokov for help sourcing statistics on Russian reindeer populations, and Jan Heggenes for useful comments on an earlier version of this paper. A full list of project participants is in Appendix 2.",
year = "2017",
month = "9",
doi = "10.1002/ece3.3230",
language = "English",
volume = "7",
pages = "6790--6802",
journal = "Ecology and Evolution",
issn = "2045-7758",
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TY - JOUR

T1 - Maintaining genetic integrity of coexisting wild and domestic populations

T2 - Genetic differentiation between wild and domestic Rangifer with long traditions of intentional interbreeding

AU - Anderson, David G.

AU - Kvie, Kjersti S.

AU - Davydov, Vladimir N.

AU - Røed, Knut H.

N1 - The funding for the fieldwork and laboratory work for this study was provided by the ERC Advanced Grant 295458 Arctic Domus (PI D.G. Anderson). The writing and analysis was supported by ESRC ES-M0110548-1 JPI HUMANOR (PI D.G. Anderson). The sample set for Lake Nichatka was collected and deposited under a research programme of the Norwegian Institute for Nature Research. We thank Liv Midthjell for skilful laboratory analyses, Konstantin Klokov for help sourcing statistics on Russian reindeer populations, and Jan Heggenes for useful comments on an earlier version of this paper. A full list of project participants is in Appendix 2.

PY - 2017/9

Y1 - 2017/9

N2 - This study investigates the genetic effect of an indigenous tradition of deliberate and controlled interbreeding between wild and domestic Rangifer. The results are interpreted in the context of conservation concerns and debates on the origin of domestic animals. The study is located in Northeastern Zabaĭkal’e, Russia at approximately 57 degrees North latitude. Blood and skin samples, collected from wild and domestic Rangifer, are analysed for their mtDNA and microsatellite signatures. Local husbandry traditions are documented ethnographically. The genetic data is analysed with special reference to indigenous understandings of the distinctions between local domestic types and wild Rangifer. The genetic results demonstrate a strong differentiation between wild and domestic populations. We found a stronger differentiation between pooled wild and domestic reindeer in mtDNA comparison to the nuclear microsatellites, which suggests male-mediated gene flow between the two gene pools. The nuclear microsatellite results also point to distinct differences between regional domestic clusters. Our results indicate that the Evenki herders have an effective breeding technique which, while mixing pedigrees in the short-term, guards against wholesale introgression between wild and domestic populations over the long-term. They support a model of domestication where wild males and domestic females are selectively interbred, without hybridizing the two populations. Our conclusions inform a debate on the origins of domestication by documenting a situation where both wild and domestic types are in constant interaction. The study further informs a debate in conservation biology by demonstrating that certain types of controlled introgression between wild and domestic types need not reduce genetic diversity.

AB - This study investigates the genetic effect of an indigenous tradition of deliberate and controlled interbreeding between wild and domestic Rangifer. The results are interpreted in the context of conservation concerns and debates on the origin of domestic animals. The study is located in Northeastern Zabaĭkal’e, Russia at approximately 57 degrees North latitude. Blood and skin samples, collected from wild and domestic Rangifer, are analysed for their mtDNA and microsatellite signatures. Local husbandry traditions are documented ethnographically. The genetic data is analysed with special reference to indigenous understandings of the distinctions between local domestic types and wild Rangifer. The genetic results demonstrate a strong differentiation between wild and domestic populations. We found a stronger differentiation between pooled wild and domestic reindeer in mtDNA comparison to the nuclear microsatellites, which suggests male-mediated gene flow between the two gene pools. The nuclear microsatellite results also point to distinct differences between regional domestic clusters. Our results indicate that the Evenki herders have an effective breeding technique which, while mixing pedigrees in the short-term, guards against wholesale introgression between wild and domestic populations over the long-term. They support a model of domestication where wild males and domestic females are selectively interbred, without hybridizing the two populations. Our conclusions inform a debate on the origins of domestication by documenting a situation where both wild and domestic types are in constant interaction. The study further informs a debate in conservation biology by demonstrating that certain types of controlled introgression between wild and domestic types need not reduce genetic diversity.

KW - domestication

KW - Evenki

KW - ndigenous animal husbandry

KW - interbreeding

KW - introgression

KW - male-mediated gene flow

KW - reindeer husbandry

KW - reproductive isolation

KW - Russia

U2 - 10.1002/ece3.3230

DO - 10.1002/ece3.3230

M3 - Article

VL - 7

SP - 6790

EP - 6802

JO - Ecology and Evolution

JF - Ecology and Evolution

SN - 2045-7758

IS - 17

ER -