Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer)
Background: African wildlife experienced a reduction in population size and geographical distribution over the last millennium, particularly since the 19th century as a result of human demographic expansion, wildlife overexploitation, habitat degradation and cattle-borne diseases. In many areas, ungulate populations are now largely confined within a network of loosely connected protected areas. These metapopulations face gene flow restriction and run the risk of genetic diversity erosion. In this context, we assessed the "genetic health" of free ranging southern African Cape buffalo populations (S.c. caffer) and investigated the origins of their current genetic structure. The analyses were based on 264 samples from 6 southern African countries that were genotyped for 14 autosomal and 3 Y-chromosomal microsatellites. Results: The analyses differentiated three significant genetic clusters, hereafter referred to as Northern (N), Central (C) and Southern (S) clusters. The results suggest that splitting of the N and C clusters occurred around 6000 to 8400 years ago. Both N and C clusters displayed high genetic diversity (mean allelic richness (Ar) of 7.217, average genetic diversity over loci of 0.594, mean private alleles (Pa) of 11), low differentiation, and an absence of an inbreeding depression signal (mean FIS = 0.037). The third (S) cluster, a tiny population enclosed within a small isolated protected area, likely originated from a more recent isolation and experienced genetic drift (FIS = 0.062, mean Ar = 6.160, Pa = 2). This study also highlighted the impact of translocations between clusters on the genetic structure of several African buffalo populations. Lower differentiation estimates were observed between C and N sampling localities that experienced translocation over the last century. Conclusions: We showed that the current genetic structure of southern African Cape buffalo populations results from both ancient and recent processes. The splitting time of N and C clusters suggests that the current pattern results from human-induced factors and/or from the aridification process that occurred during the Holocene period. The more recent S cluster genetic drift probably results of processes that occurred over the last centuries (habitat fragmentation, diseases). Management practices of African buffalo populations should consider the micro-evolutionary changes highlighted in the present study.
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Biblioteca del CIRAD Francia |
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L10 - Génétique et amélioration des animaux L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières buffle africain génétique des populations distribution géographique conservation des ressources génétiques phylogénie marqueur génétique microsatellite translocation génotype évolution http://aims.fao.org/aos/agrovoc/c_167 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_37280 http://aims.fao.org/aos/agrovoc/c_13325 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_7869 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_2745 http://aims.fao.org/aos/agrovoc/c_7265 http://aims.fao.org/aos/agrovoc/c_8516 http://aims.fao.org/aos/agrovoc/c_1030 http://aims.fao.org/aos/agrovoc/c_7252 http://aims.fao.org/aos/agrovoc/c_4964 http://aims.fao.org/aos/agrovoc/c_8501 http://aims.fao.org/aos/agrovoc/c_417 L10 - Génétique et amélioration des animaux L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières buffle africain génétique des populations distribution géographique conservation des ressources génétiques phylogénie marqueur génétique microsatellite translocation génotype évolution http://aims.fao.org/aos/agrovoc/c_167 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_37280 http://aims.fao.org/aos/agrovoc/c_13325 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_7869 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_2745 http://aims.fao.org/aos/agrovoc/c_7265 http://aims.fao.org/aos/agrovoc/c_8516 http://aims.fao.org/aos/agrovoc/c_1030 http://aims.fao.org/aos/agrovoc/c_7252 http://aims.fao.org/aos/agrovoc/c_4964 http://aims.fao.org/aos/agrovoc/c_8501 http://aims.fao.org/aos/agrovoc/c_417 |
spellingShingle |
L10 - Génétique et amélioration des animaux L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières buffle africain génétique des populations distribution géographique conservation des ressources génétiques phylogénie marqueur génétique microsatellite translocation génotype évolution http://aims.fao.org/aos/agrovoc/c_167 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_37280 http://aims.fao.org/aos/agrovoc/c_13325 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_7869 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_2745 http://aims.fao.org/aos/agrovoc/c_7265 http://aims.fao.org/aos/agrovoc/c_8516 http://aims.fao.org/aos/agrovoc/c_1030 http://aims.fao.org/aos/agrovoc/c_7252 http://aims.fao.org/aos/agrovoc/c_4964 http://aims.fao.org/aos/agrovoc/c_8501 http://aims.fao.org/aos/agrovoc/c_417 L10 - Génétique et amélioration des animaux L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières buffle africain génétique des populations distribution géographique conservation des ressources génétiques phylogénie marqueur génétique microsatellite translocation génotype évolution http://aims.fao.org/aos/agrovoc/c_167 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_37280 http://aims.fao.org/aos/agrovoc/c_13325 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_7869 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_2745 http://aims.fao.org/aos/agrovoc/c_7265 http://aims.fao.org/aos/agrovoc/c_8516 http://aims.fao.org/aos/agrovoc/c_1030 http://aims.fao.org/aos/agrovoc/c_7252 http://aims.fao.org/aos/agrovoc/c_4964 http://aims.fao.org/aos/agrovoc/c_8501 http://aims.fao.org/aos/agrovoc/c_417 Smitz, Nathalie Cornélis, Daniel Chardonnet, Philippe Caron, Alexandre De Garine-Wichatitsky, Michel Jori, Ferran Mouton, Alice Latinne, Alice Pigneur, Lise-Marie Melletti, Mario Kanapeckas, Kimberly L. Marescaux, Jonathan Lopes Pereira, Carlos Michaux, Johan Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer) |
description |
Background: African wildlife experienced a reduction in population size and geographical distribution over the last millennium, particularly since the 19th century as a result of human demographic expansion, wildlife overexploitation, habitat degradation and cattle-borne diseases. In many areas, ungulate populations are now largely confined within a network of loosely connected protected areas. These metapopulations face gene flow restriction and run the risk of genetic diversity erosion. In this context, we assessed the "genetic health" of free ranging southern African Cape buffalo populations (S.c. caffer) and investigated the origins of their current genetic structure. The analyses were based on 264 samples from 6 southern African countries that were genotyped for 14 autosomal and 3 Y-chromosomal microsatellites. Results: The analyses differentiated three significant genetic clusters, hereafter referred to as Northern (N), Central (C) and Southern (S) clusters. The results suggest that splitting of the N and C clusters occurred around 6000 to 8400 years ago. Both N and C clusters displayed high genetic diversity (mean allelic richness (Ar) of 7.217, average genetic diversity over loci of 0.594, mean private alleles (Pa) of 11), low differentiation, and an absence of an inbreeding depression signal (mean FIS = 0.037). The third (S) cluster, a tiny population enclosed within a small isolated protected area, likely originated from a more recent isolation and experienced genetic drift (FIS = 0.062, mean Ar = 6.160, Pa = 2). This study also highlighted the impact of translocations between clusters on the genetic structure of several African buffalo populations. Lower differentiation estimates were observed between C and N sampling localities that experienced translocation over the last century. Conclusions: We showed that the current genetic structure of southern African Cape buffalo populations results from both ancient and recent processes. The splitting time of N and C clusters suggests that the current pattern results from human-induced factors and/or from the aridification process that occurred during the Holocene period. The more recent S cluster genetic drift probably results of processes that occurred over the last centuries (habitat fragmentation, diseases). Management practices of African buffalo populations should consider the micro-evolutionary changes highlighted in the present study. |
format |
article |
topic_facet |
L10 - Génétique et amélioration des animaux L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières buffle africain génétique des populations distribution géographique conservation des ressources génétiques phylogénie marqueur génétique microsatellite translocation génotype évolution http://aims.fao.org/aos/agrovoc/c_167 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_37280 http://aims.fao.org/aos/agrovoc/c_13325 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_7869 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_2745 http://aims.fao.org/aos/agrovoc/c_7265 http://aims.fao.org/aos/agrovoc/c_8516 http://aims.fao.org/aos/agrovoc/c_1030 http://aims.fao.org/aos/agrovoc/c_7252 http://aims.fao.org/aos/agrovoc/c_4964 http://aims.fao.org/aos/agrovoc/c_8501 http://aims.fao.org/aos/agrovoc/c_417 |
author |
Smitz, Nathalie Cornélis, Daniel Chardonnet, Philippe Caron, Alexandre De Garine-Wichatitsky, Michel Jori, Ferran Mouton, Alice Latinne, Alice Pigneur, Lise-Marie Melletti, Mario Kanapeckas, Kimberly L. Marescaux, Jonathan Lopes Pereira, Carlos Michaux, Johan |
author_facet |
Smitz, Nathalie Cornélis, Daniel Chardonnet, Philippe Caron, Alexandre De Garine-Wichatitsky, Michel Jori, Ferran Mouton, Alice Latinne, Alice Pigneur, Lise-Marie Melletti, Mario Kanapeckas, Kimberly L. Marescaux, Jonathan Lopes Pereira, Carlos Michaux, Johan |
author_sort |
Smitz, Nathalie |
title |
Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer) |
title_short |
Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer) |
title_full |
Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer) |
title_fullStr |
Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer) |
title_full_unstemmed |
Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer) |
title_sort |
genetic structure of fragmented southern populations of african cape buffalo (syncerus caffer caffer) |
url |
http://agritrop.cirad.fr/574440/ http://agritrop.cirad.fr/574440/1/document_574440.pdf |
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dig-cirad-fr-5744402024-01-28T22:19:13Z http://agritrop.cirad.fr/574440/ http://agritrop.cirad.fr/574440/ Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer). Smitz Nathalie, Cornélis Daniel, Chardonnet Philippe, Caron Alexandre, De Garine-Wichatitsky Michel, Jori Ferran, Mouton Alice, Latinne Alice, Pigneur Lise-Marie, Melletti Mario, Kanapeckas Kimberly L., Marescaux Jonathan, Lopes Pereira Carlos, Michaux Johan. 2014. BMC Evolutionary Biology, 14 (203), 19 p.https://doi.org/10.1186/s12862-014-0203-2 <https://doi.org/10.1186/s12862-014-0203-2> Genetic structure of fragmented southern populations of African Cape buffalo (Syncerus caffer caffer) Smitz, Nathalie Cornélis, Daniel Chardonnet, Philippe Caron, Alexandre De Garine-Wichatitsky, Michel Jori, Ferran Mouton, Alice Latinne, Alice Pigneur, Lise-Marie Melletti, Mario Kanapeckas, Kimberly L. Marescaux, Jonathan Lopes Pereira, Carlos Michaux, Johan eng 2014 BMC Evolutionary Biology L10 - Génétique et amélioration des animaux L60 - Taxonomie et géographie animales P01 - Conservation de la nature et ressources foncières buffle africain génétique des populations distribution géographique conservation des ressources génétiques phylogénie marqueur génétique microsatellite translocation génotype évolution http://aims.fao.org/aos/agrovoc/c_167 http://aims.fao.org/aos/agrovoc/c_34326 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_37280 http://aims.fao.org/aos/agrovoc/c_13325 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_7869 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_2745 Afrique australe Zimbabwe Botswana Afrique du Sud Mozambique Zambie Angola http://aims.fao.org/aos/agrovoc/c_7265 http://aims.fao.org/aos/agrovoc/c_8516 http://aims.fao.org/aos/agrovoc/c_1030 http://aims.fao.org/aos/agrovoc/c_7252 http://aims.fao.org/aos/agrovoc/c_4964 http://aims.fao.org/aos/agrovoc/c_8501 http://aims.fao.org/aos/agrovoc/c_417 Background: African wildlife experienced a reduction in population size and geographical distribution over the last millennium, particularly since the 19th century as a result of human demographic expansion, wildlife overexploitation, habitat degradation and cattle-borne diseases. In many areas, ungulate populations are now largely confined within a network of loosely connected protected areas. These metapopulations face gene flow restriction and run the risk of genetic diversity erosion. In this context, we assessed the "genetic health" of free ranging southern African Cape buffalo populations (S.c. caffer) and investigated the origins of their current genetic structure. The analyses were based on 264 samples from 6 southern African countries that were genotyped for 14 autosomal and 3 Y-chromosomal microsatellites. Results: The analyses differentiated three significant genetic clusters, hereafter referred to as Northern (N), Central (C) and Southern (S) clusters. The results suggest that splitting of the N and C clusters occurred around 6000 to 8400 years ago. Both N and C clusters displayed high genetic diversity (mean allelic richness (Ar) of 7.217, average genetic diversity over loci of 0.594, mean private alleles (Pa) of 11), low differentiation, and an absence of an inbreeding depression signal (mean FIS = 0.037). The third (S) cluster, a tiny population enclosed within a small isolated protected area, likely originated from a more recent isolation and experienced genetic drift (FIS = 0.062, mean Ar = 6.160, Pa = 2). This study also highlighted the impact of translocations between clusters on the genetic structure of several African buffalo populations. Lower differentiation estimates were observed between C and N sampling localities that experienced translocation over the last century. Conclusions: We showed that the current genetic structure of southern African Cape buffalo populations results from both ancient and recent processes. The splitting time of N and C clusters suggests that the current pattern results from human-induced factors and/or from the aridification process that occurred during the Holocene period. The more recent S cluster genetic drift probably results of processes that occurred over the last centuries (habitat fragmentation, diseases). Management practices of African buffalo populations should consider the micro-evolutionary changes highlighted in the present study. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/574440/1/document_574440.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1186/s12862-014-0203-2 10.1186/s12862-014-0203-2 info:eu-repo/semantics/altIdentifier/doi/10.1186/s12862-014-0203-2 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1186/s12862-014-0203-2 |