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Ben Sassi-Zaidy Y, Mohamed-Brahmi A, Chaouch M, Maretto F, Cendron F, Charfi-Cheikhrouha F, Ben Abderrazak S, Djemali M, Cassandro M. Historical Westward Migration Phases of Ovis aries Inferred from the Population Structure and the Phylogeography of Occidental Mediterranean Native Sheep Breeds. Genes (Basel) 2022; 13:genes13081421. [PMID: 36011332 PMCID: PMC9408117 DOI: 10.3390/genes13081421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/22/2022] [Accepted: 08/04/2022] [Indexed: 01/18/2023] Open
Abstract
In this study, the genetic relationship and the population structure of western Mediterranean basin native sheep breeds are investigated, analyzing Maghrebian, Central Italian, and Venetian sheep with a highly informative microsatellite markers panel. The phylogeographical analysis, between breeds’ differentiation level (Wright’s fixation index), gene flow, ancestral relatedness measured by molecular coancestry, genetic distances, divergence times estimates and structure analyses, were revealed based on the assessment of 975 genotyped animals. The results unveiled the past introduction and migration history of sheep in the occidental Mediterranean basin since the early Neolithic. Our findings provided a scenario of three westward sheep migration phases fitting properly to the westward Neolithic expansion argued by zooarcheological, historical and human genetic studies.
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Affiliation(s)
- Yousra Ben Sassi-Zaidy
- Laboratory of Diversity, Management and Conservation of Biological Systems, LR18ES06, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis 2092, Tunisia
- Department of Agronomy, Animal, Food, Natural Resources and Environment, University of Padova, 35020 Legnaro Padova, Italy
- Laboratory of Animal Genetic and Feed Resources Research, Department of Animal Science, Institut National Agronomique de Tunis (INAT), University of Carthage, Tunis-Mahragène Tunis 2078, Tunisia
- Correspondence: (Y.B.S.-Z.); (F.C.); Tel.: +39-049-8272871 (F.C.); Fax: +39-049-8272633 (F.C.)
| | - Aziza Mohamed-Brahmi
- Laboratory of Agricultural Production Systems Sustainability in the North Western Region of Tunisia, Department of Animal Production, Ecole Supérieure d’Agriculture du Kef Boulifa, University of Jendouba, Le Kef 7119, Tunisia
| | - Melek Chaouch
- Laboratory of Medical Parasitology, Biotechnology and Biomolecules (LR11IPT06), Institut Pasteur de Tunis, Tunis 1002, Tunisia
- Laboratory of Bioinformatics, Biomathematics and Biostatistics (LR16IPT09), Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Fabio Maretto
- Department of Agronomy, Animal, Food, Natural Resources and Environment, University of Padova, 35020 Legnaro Padova, Italy
| | - Filippo Cendron
- Department of Agronomy, Animal, Food, Natural Resources and Environment, University of Padova, 35020 Legnaro Padova, Italy
- Correspondence: (Y.B.S.-Z.); (F.C.); Tel.: +39-049-8272871 (F.C.); Fax: +39-049-8272633 (F.C.)
| | - Faouzia Charfi-Cheikhrouha
- Laboratory of Diversity, Management and Conservation of Biological Systems, LR18ES06, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis 2092, Tunisia
| | - Souha Ben Abderrazak
- Laboratory of Medical Parasitology, Biotechnology and Biomolecules (LR11IPT06), Institut Pasteur de Tunis, Tunis 1002, Tunisia
| | - Mnaour Djemali
- Laboratory of Animal Genetic and Feed Resources Research, Department of Animal Science, Institut National Agronomique de Tunis (INAT), University of Carthage, Tunis-Mahragène Tunis 2078, Tunisia
| | - Martino Cassandro
- Department of Agronomy, Animal, Food, Natural Resources and Environment, University of Padova, 35020 Legnaro Padova, Italy
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Genetic Differentiation among Livestock Breeds—Values for Fst. Animals (Basel) 2022; 12:ani12091115. [PMID: 35565543 PMCID: PMC9103131 DOI: 10.3390/ani12091115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 12/02/2022] Open
Abstract
Simple Summary The degree of relationship among livestock breeds can be quantified by the Fst statistic, which measures the extent of genetic differentiation between them. An Fst value of 0.1 has often been taken as indicating that two breeds are indeed genetically distinct, but this concept has not been evaluated critically. Here, Fst values have been collated for the six major livestock species: cattle, sheep, goats, pigs, horses, and chickens. These values are remarkably variable both within and between species, demonstrating that Fst > 0.1 is not a reliable criterion for breed distinctiveness. However, the large body of Fst data accumulated in the last 20–30 years represents an untapped database that could contribute to the development of interdisciplinary research involving livestock breeds. Abstract (1) Background: The Fst statistic is widely used to characterize between-breed relationships. Fst = 0.1 has frequently been taken as indicating genetic distinctiveness between breeds. This study investigates whether this is justified. (2) Methods: A database was created of 35,080 breed pairs and their corresponding Fst values, deduced from microsatellite and SNP studies covering cattle, sheep, goats, pigs, horses, and chickens. Overall, 6560 (19%) of breed pairs were between breeds located in the same country, 7395 (21%) between breeds of different countries within the same region, 20,563 (59%) between breeds located far apart, and 562 (1%) between a breed and the supposed wild ancestor of the species. (3) Results: General values for between-breed Fst were as follows, cattle: microsatellite 0.06–0.12, SNP 0.08–0.15; sheep: microsatellite 0.06–0.10, SNP 0.06–0.17; horses: microsatellite 0.04–0.11, SNP 0.08–0.12; goats: microsatellite 0.04–0.14, SNP 0.08–0.16; pigs: microsatellite 0.06–0.27, SNP 0.15–0.22; chickens: microsatellite 0.05–0.28, SNP 0.08–0.26. (4) Conclusions: (1) Large amounts of Fst data are available for a substantial proportion of the world’s livestock breeds, (2) the value for between-breed Fst of 0.1 is not appropriate owing to its considerable variability, and (3) accumulated Fst data may have value for interdisciplinary research.
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Granado-Tajada I, Rodríguez-Ramilo ST, Legarra A, Ugarte E. Inbreeding, effective population size, and coancestry in the Latxa dairy sheep breed. J Dairy Sci 2020; 103:5215-5226. [PMID: 32253040 DOI: 10.3168/jds.2019-17743] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/03/2020] [Indexed: 12/24/2022]
Abstract
Traditionally, breeding programs have estimated and managed inbreeding based on pedigree information. The availability of genomic marker panels has made possible new alternatives to achieve more precise estimates, for example in case of missing pedigree. The objective of the present study was to assess and compare, different estimation methods (pedigree-based methodologies, single SNP-based approach (homozygosity) and runs of homozygosity-based method) to analyze the evolution of genetic diversity measured as inbreeding or as coancestry of 3 selected populations of Latxa dairy sheep (Latxa Cara Rubia and Latxa Cara Negra from Euskadi and Navarre). Genomic data came from 972 artificial insemination rams genotyped with the Illumina OvineSNP50 BeadChip (Illumina Inc., San Diego, CA) whose genealogy consisted of 4,484 animals. Inbreeding estimates based on molecular data were more similar between them than compared with those based on pedigree information. However, the SNP-based approach estimations of effective population size differed more, reflecting the sensitivity of effective population size to small changes in the evolution of inbreeding. The 2 Latxa Cara Negra populations showed increases of inbreeding rates with time and effective population sizes between 64 and 103 animals, depending on breed and methodology used. The Latxa Cara Rubia population did not show an increase in inbreeding rate, mainly due to semen importation from the related French population of Manech Tête Rousse. The effective size estimates based on coancestry increase show a higher variability and they are more sensitive to the source of information and the data structure considered. Realized effective population size based on individual increase in inbreeding were in agreement with the previous estimates. Coancestry evolution analysis based on DNA information showed an increase on coancestry during the last 10 yr in all breeds, as a consequence of the selection process. Moreover, the increase on coancestry between Latxa Cara Rubia and Manech Tête Rousse was more noticeable between than within each of those breeds.
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Affiliation(s)
- I Granado-Tajada
- Department of Animal Production, NEIKER-BRTA, Basque Institute of Agricultural Research and Development, Agrifood Campus of Arkaute s/n, E-01080 Arkaute, Spain.
| | | | - A Legarra
- INRAE, UMR 1388 GenPhySE, 31326 Castanet Tolosan, France
| | - E Ugarte
- Department of Animal Production, NEIKER-BRTA, Basque Institute of Agricultural Research and Development, Agrifood Campus of Arkaute s/n, E-01080 Arkaute, Spain
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Bravo S, Larama G, Quiñones J, Paz E, Rodero E, Sepúlveda N. Genetic diversity and phylogenetic relationship among araucana creole sheep and Spanish sheep breeds. Small Rumin Res 2019. [DOI: 10.1016/j.smallrumres.2019.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Santos CHA, Santana GX, Sá Leitão CS, Paula-Silva MN, Almeida-Val VMF. Loss of genetic diversity in farmed populations ofColossoma macropomumestimated by microsatellites. Anim Genet 2016; 47:373-6. [DOI: 10.1111/age.12422] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2016] [Indexed: 11/28/2022]
Affiliation(s)
- C. H. A. Santos
- Laboratório de Genética Aplicada à Aquicultura & Biologia Molecular; Universidade Nilton Lins; Avenida Professor Nilton Lins Flores Manaus 69058-030 Brasil
- Laboratório de Ecofisiologia e Evolução Molecular; Instituto Nacional de Pesquisas da Amazônia; Avenida André Araújo Aleixo Manaus 69060-001 Brasil
| | - G. X. Santana
- Centro de Pesquisa e Desenvolvimento Leopoldo Américo Miguez de Mello; Rio de Janeiro 20031-000 Brasil
| | - C. S. Sá Leitão
- Laboratório de Ecofisiologia e Evolução Molecular; Instituto Nacional de Pesquisas da Amazônia; Avenida André Araújo Aleixo Manaus 69060-001 Brasil
| | - M. N. Paula-Silva
- Laboratório de Ecofisiologia e Evolução Molecular; Instituto Nacional de Pesquisas da Amazônia; Avenida André Araújo Aleixo Manaus 69060-001 Brasil
| | - V. M. F. Almeida-Val
- Laboratório de Genética Aplicada à Aquicultura & Biologia Molecular; Universidade Nilton Lins; Avenida Professor Nilton Lins Flores Manaus 69058-030 Brasil
- Laboratório de Ecofisiologia e Evolução Molecular; Instituto Nacional de Pesquisas da Amazônia; Avenida André Araújo Aleixo Manaus 69060-001 Brasil
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E GX, Zhong T, Ma YH, Gao HJ, He JN, Liu N, Zhao YJ, Zhang JH, Huang YF. Conservation genetics in Chinese sheep: diversity of fourteen indigenous sheep (Ovis aries) using microsatellite markers. Ecol Evol 2016; 6:810-7. [PMID: 26865968 PMCID: PMC4739567 DOI: 10.1002/ece3.1891] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 11/13/2015] [Accepted: 11/23/2015] [Indexed: 11/10/2022] Open
Abstract
The domestic sheep (Ovis aries) has been an economically and culturally important farm animal species since its domestication around the world. A wide array of sheep breeds with abundant phenotypic diversity exists including domestication and selection as well as the indigenous breeds may harbor specific features as a result of adaptation to their environment. The objective of this study was to investigate the population structure of indigenous sheep in a large geographic location of the Chinese mainland. Six microsatellites were genotyped for 611 individuals from 14 populations. The mean number of alleles (±SD) ranged from 7.00 ± 3.69 in Gangba sheep to 10.50 ± 4.23 in Tibetan sheep. The observed heterozygote frequency (±SD) within a population ranged from 0.58 ± 0.03 in Gangba sheep to 0.71 ± 0.03 in Zazakh sheep and Minxian black fur sheep. In addition, there was a low pairwise difference among the Minxian black fur sheep, Mongolian sheep, Gansu alpine merino, and Lanzhou fat-tailed sheep. Bayesian analysis with the program STRUCTURE showed support for 3 clusters, revealing a vague genetic clustering pattern with geographic location. The results of the current study inferred high genetic diversity within these native sheep in the Chinese mainland.
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Affiliation(s)
- Guang-Xin E
- College of Animal Science and Technology Chongqing Key Laboratory of Forage & Herbivore Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization Southwest University Chongqing 400716 China
| | - Tao Zhong
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan province Sichuan Agricultural University Chengdu Sichuan 625014 China
| | - Yue-Hui Ma
- Institute of Animal Science Chinese Academy of Agricultural Sciences (CAAS) Beijing 100193 China
| | - Hui-Jiang Gao
- Institute of Animal Science Chinese Academy of Agricultural Sciences (CAAS) Beijing 100193 China
| | - Jian-Ning He
- College of Animal Science and Technology Qingdao Agricultural University Qingdao 266109 China
| | - Nan Liu
- College of Animal Science and Technology Qingdao Agricultural University Qingdao 266109 China
| | - Yong-Ju Zhao
- College of Animal Science and Technology Chongqing Key Laboratory of Forage & Herbivore Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization Southwest University Chongqing 400716 China
| | - Jia-Hua Zhang
- College of Animal Science and Technology Chongqing Key Laboratory of Forage & Herbivore Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization Southwest University Chongqing 400716 China
| | - Yong-Fu Huang
- College of Animal Science and Technology Chongqing Key Laboratory of Forage & Herbivore Chongqing Engineering Research Centre for Herbivores Resource Protection and Utilization Southwest University Chongqing 400716 China
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Martemucci G, Iamartino D, Blasi M, Selvaggi M, D'Alessandro AG. Evaluation of genetic variability within PrP genotyped sheep of endangered Italian Altamurana breed. Prev Vet Med 2016; 123:90-96. [PMID: 26708253 DOI: 10.1016/j.prevetmed.2015.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 11/25/2015] [Accepted: 11/27/2015] [Indexed: 11/30/2022]
Abstract
In the last few decades, there has been increased awareness of preservation and exploitation of endangered breeds for the maintenance of biodiversity, as well as the concern for diseases in sheep breeding. This study was carried out in native endangered Altamurana dairy sheep breed from Southern Italy. The Altamurana breed was considered as two populations (Alt-Cav and Alt-Cra-Zoe), based on presumed cross-breed and remarkable differences in the PrP genotypes frequencies. The genetic diversity between the two Altamurana populations (Alt-Cav and Alt-Cra-Zoe) was evaluated in comparison to three Italian dairy breeds through fourteen microsatellite markers. Both measures of genetic distance and the population structure analysis highlighted that the Alt-Cav and Alt-Cra-Zoe sheep have a particular genetic background. The estimated fixation index (FST) and the genetic Nei's distances among the populations showed a higher level of genetic differentiation for Alt-Cav than Alt-Cra-Zoe. The Bayesian clustering analysis implemented in the STRUCTURE software showed clear and distinct clusters for the two Altamurana populations, confirming the hypothesis of Alt-Cav as a genetic group well differentiated from Alt-Cra-Zoe. Alt-Cav likely can be considered as belonging to the original strain of the Altamurana breed. This findings may be used to assist the programme for conservation and selection of scrapie resistance genotypes in endangered Altamurana sheep breed.
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Affiliation(s)
- Giovanni Martemucci
- Department of Scienze Agro-Ambientali e Territoriali, University of Bari, Via G. Amendola 165/A, 70126 Bari, Italy
| | - Daniela Iamartino
- Institute of Zootechnics, Università Cattolica del S. Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy; AIA-LGS Associazione Italiana Allevatori-Laboratorio di Genetica e Servizi, Via Bergamo 292, 26100 Cremona, Italy
| | - Michele Blasi
- AIA-DQA Associazione Italiana Allevatori-Dipartimento Qualità Agroalimentare, Via Tomassetti 9, 00161 Roma, Italy
| | - Maria Selvaggi
- Department of DETO, Section of Veterinary Science and Animal Production, University of Bari, Valenzano 70010, Italy
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Elbeltagy A, Aboul-Naga A, Hassen H, Rischkowsky B, Mwacharo J. Genetic diversity and structure in Egyptian indigenous sheep populations mirror patterns of anthropological interactions. Small Rumin Res 2015. [DOI: 10.1016/j.smallrumres.2015.10.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Bowles D. Recent advances in understanding the genetic resources of sheep breeds locally-adapted to the UK uplands: opportunities they offer for sustainable productivity. Front Genet 2015; 6:24. [PMID: 25729388 PMCID: PMC4325934 DOI: 10.3389/fgene.2015.00024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/16/2015] [Indexed: 12/17/2022] Open
Abstract
Locally adapted breeds of livestock are of considerable interest since they represent potential reservoirs of adaptive fitness traits that may contribute to the future of sustainable productivity in a changing climate. Recent research, involving three hill sheep breeds geographically concentrated in the northern uplands of the UK has revealed the extent of their genetic diversity from one another and from other breeds. Results from the use of SNPs, microsatellites, and retrovirus insertions are reviewed in the context of related studies on sheep breeds world-wide to highlight opportunities offered by the genetic resources of locally adapted hill breeds. One opportunity concerns reduced susceptibility to Maedi Visna, a lentivirus with massive impacts on sheep health and productivity globally. In contrast to many mainstream breeds used in farming, each of the hill breeds analyzed are likely to be far less susceptible to the disease threat. A different opportunity, relating specifically to the Herdwick breed, is the extent to which the genome of the breed has retained primitive features, no longer present in other mainland breeds of sheep in the UK and offering a new route for discovering unique genetic traits of use to agriculture.
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Affiliation(s)
- Dianna Bowles
- Department of Biology, University of York York, UK ; The Sheep Trust, University of York York, UK
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Huang Y, Bates RO, Ernst CW, Fix JS, Steibel JP. Estimation of U.S. Yorkshire breed composition using genomic data
1. J Anim Sci 2014; 92:1395-404. [DOI: 10.2527/jas.2013-6907] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y. Huang
- Department of Animal Science, Michigan State University, East Lansing 48824
| | - R. O. Bates
- Department of Animal Science, Michigan State University, East Lansing 48824
| | - C. W. Ernst
- Department of Animal Science, Michigan State University, East Lansing 48824
| | - J. S. Fix
- Smithfield Premium Genetics, Roanoke Rapids, NC 27870
| | - J. P. Steibel
- Department of Animal Science, Michigan State University, East Lansing 48824
- Department of Fisheries and Wildlife, Michigan State University, East Lansing 48824
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Álvarez I, Traoré A, Fernández I, Cuervo M, Lecomte T, Soudré A, Kaboré A, Tamboura HH, Goyache F. Assessing introgression of Sahelian zebu genes into native Bos taurus breeds in Burkina Faso. Mol Biol Rep 2014; 41:3745-54. [PMID: 24532141 DOI: 10.1007/s11033-014-3239-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 02/06/2014] [Indexed: 11/25/2022]
Abstract
A total of 350 samples were analyzed to estimate zebu gene proportions into two different taurine cattle breeds of Burkina Faso (Lobi and N'Dama) using 38 microsatellites and various statistical methodologies. West African and East African zebu samples were sequentially used as reference parental populations. Furthermore, N'Dama cattle from Congo, the composite South African Bonsmara cattle breed and a pool of European cattle were used successively as second parental populations. Independently of the methodology applied: (a) the use of West African zebu samples gave higher admixture coefficients than the East African zebu; (b) the higher zebu proportions were estimated when the European cattle was used as parental population 2; and (c) the use of the N'Dama population from Congo as parental population 2 gave the more consistent zebu proportion estimates for both the Lobi and the N'Dama breeds. In any case, the zebu admixture proportions estimated were not negligible and were always higher in the N'Dama cattle than in the Lobi cattle of Burkina Faso. This suggested that the introgression of Sahelian zebu genes into the taurine cattle of Southern West Africa can follow a complex pattern that can depend on local agro-ecological features. The current research pointed out that the estimation of admixture coefficients is highly dependent on both the assumptions underlying the methodologies applied and the selection of parental populations. Our analyses suggest that either too high or nil genetic identity between the parental and the expectedly derived populations must be avoided.
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Affiliation(s)
- I Álvarez
- SERIDA-Deva, Área de genética y Reproducción Animal, Camino de Rioseco 1225, 33394, Gijón (Asturias), Spain
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Bowles D, Carson A, Isaac P. Genetic distinctiveness of the Herdwick sheep breed and two other locally adapted hill breeds of the UK. PLoS One 2014; 9:e87823. [PMID: 24489968 PMCID: PMC3906253 DOI: 10.1371/journal.pone.0087823] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 12/30/2013] [Indexed: 11/25/2022] Open
Abstract
There is considerable interest in locally adapted breeds of livestock as reservoirs of genetic diversity that may provide important fitness traits for future use in agriculture. In marginal areas, these animals contribute to food security and extract value from land unsuitable for other systems of farming. In England, close to 50% of the national sheep flock is farmed on grassland designated as disadvantaged areas for agricultural production. Many of these areas are in the uplands, where some native breeds of sheep continue to be commercially farmed only in highly localised geographical regions to which they are adapted. This study focuses on three of these breeds, selected for their adaptation to near identical environments and their geographical concentration in regions close to one another. Our objective has been to use retrotyping, microsatellites and single nucleotide polymorphisms to explore the origins of the breeds and whether, despite their similar adaptations and proximity, they are genetically distinctive. We find the three breeds each have a surprisingly different pattern of retrovirus insertions into their genomes compared with one another and with other UK breeds. Uniquely, there is a high incidence of the R0 retrotype in the Herdwick population, characteristic of a primitive genome found previously in very few breeds worldwide and none in the UK mainland. The Herdwick and Rough Fells carry two rare retroviral insertion events, common only in Texels, suggesting sheep populations in the northern uplands have a historical association with the original pin-tail sheep of Texel Island. Microsatellite data and analyses of SNPs associated with RXFP2 (horn traits) and PRLR (reproductive performance traits) also distinguished the three breeds. Significantly, an SNP linked to TMEM154, a locus controlling susceptibility to infection by Maedi-Visna, indicated that all three native hill breeds have a lower than average risk of infection to the lentivirus.
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Affiliation(s)
- Dianna Bowles
- Department of Biology, University of York, York, United Kingdom
- The Sheep Trust, registered charity 1094514, University of York, York, United Kingdom
- * E-mail:
| | - Amanda Carson
- The Sheep Trust, registered charity 1094514, University of York, York, United Kingdom
| | - Peter Isaac
- IDna Genetics Ltd, Norwich Research Park, Norwich, United Kingdom
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Ciani E, Ciampolini R, D’Andrea M, Castellana E, Cecchi F, Incoronato C, d’Angelo F, Albenzio M, Pilla F, Matassino D, Cianci D. Analysis of genetic variability within and among Italian sheep breeds reveals population stratification and suggests the presence of a phylogeographic gradient. Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2012.12.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Traoré A, Álvarez I, Fernández I, Pérez-Pardal L, Kaboré A, Ouédraogo-Sanou GM, Zaré Y, Tambourá HH, Goyache F. Ascertaining gene flow patterns in livestock populations of developing countries: a case study in Burkina Faso goat. BMC Genet 2012; 13:35. [PMID: 22564289 PMCID: PMC3413537 DOI: 10.1186/1471-2156-13-35] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 05/07/2012] [Indexed: 11/10/2022] Open
Abstract
Background Introgression of Sahel livestock genes southwards in West Africa may be favoured by human activity and the increase of the duration of the dry seasons since the 1970’s. The aim of this study is to assess the gene flow patterns in Burkina Faso goat and to ascertain the most likely factors influencing geographic patterns of genetic variation in the Burkina Faso goat population. Results A total of 520 goat were sampled in 23 different locations of Burkina Faso and genotyped for a set of 19 microsatellites. Data deposited in the Dryad repository: http://dx.doi.org/10.5061/dryad.41h46j37. Although overall differentiation is poor (FST = 0.067 ± 0.003), the goat population of Burkina Faso is far from being homogeneous. Barrier analysis pointed out the existence of: a) genetic discontinuities in the Central and Southeast Burkina Faso; and b) genetic differences within the goat sampled in the Sahel or the Sudan areas of Burkina Faso. Principal component analysis and admixture proportion scores were computed for each population sampled and used to construct interpolation maps. Furthermore, Population Graph analysis revealed that the Sahel and the Sudan environmental areas of Burkina Faso were connected through a significant number of extended edges, which would be consistent with the hypothesis of long-distance dispersal. Genetic variation of Burkina Faso goat followed a geographic-related pattern. This pattern of variation is likely to be related to the presence of vectors of African animal trypanosomosis. Partial Mantel test identified the present Northern limit of trypanosome vectors as the most significant landscape boundary influencing the genetic variability of Burkina Faso goat (p = 0.008). The contribution of Sahel goat genes to the goat populations in the Northern and Eastern parts of the Sudan-Sahel area of Burkina Faso was substantial. The presence of perennial streams explains the existence of trypanosome vectors. The South half of the Nakambé river (Southern Ouagadougou) and the Mouhoun river loop determined, respectively, the Eastern and Northern limits for the expansion of Sahelian goat genes. Furthermore, results from partial Mantel test suggest that the introgression of Sahelian goat genes into Djallonké goat using human-influenced genetic corridors has a limited influence when compared to the biological boundary defined by the northern limits for the distribution of the tsetse fly. However, the genetic differences found between the goat sampled in Bobo Dioulasso and the other populations located in the Sudan area of Burkina Faso may be explained by the broad goat trade favoured by the main road of the country. Conclusions The current analysis clearly suggests that genetic variation in Burkina Faso goat: a) follows a North to South clinal; and b) is affected by the distribution of the tsetse fly that imposes a limit to the Sahelian goat expansion due to their trypanosusceptibility. Here we show how extensive surveys on livestock populations can be useful to indirectly assess the consequences of climate change and human action in developing countries.
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Affiliation(s)
- Amadou Traoré
- SERIDA-Deva, C/Camino de Rioseco 1225, E-33394, Gijón (Asturias), Spain.
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Álvarez I, Capote J, Traoré A, Fonseca N, Pérez K, Cuervo M, Fernández I, Goyache F. Genetic relationships of the Cuban hair sheep inferred from microsatellite polymorphism. Small Rumin Res 2012. [DOI: 10.1016/j.smallrumres.2011.10.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Preservation of rare genetic stocks requires assessment of within-population genetic diversity and between-population differentiation to make inferences on their degree of uniqueness. A total of 194 Tuscan cattle (44 Calvana, 35 Chianina, 25 Garfagnina, 31 Maremmana, 31 Mucca Pisana and 28 Pontremolese) individuals were genotyped for 34 microsatellite markers. Moreover, 56 samples belonging to Argentinean Creole and Asturiana de la Montaña cattle breeds were used as an outgroup. Genetic diversity was quantified in terms of molecular coancestry and allelic richness. STRUCTURE analyses showed that the Tuscan breeds have well-differentiated genetic backgrounds, except for the Calvana and Chianina breeds, which share the same genetic ancestry. The between-breed Nei's minimum distance (Dm) matrices showed that the pair Calvana-Chianina was less differentiated (0.049 ± 0.006). The endangered Tuscan breeds (Calvana, Garfagnina, Mucca Pisana and Pontremolese) made null or negative contributions to diversity, except for the Mucca Pisana contribution to allelic richness (CT = 1.8%). The Calvana breed made null or negative within-breed contributions (W = 0.0%; CW = -0.4%). The Garfagnina and Pontremolese breeds made positive contributions to between-breed diversity but negative and high within-breed contributions, thus suggesting population bottleneck with allelic losses and increase of homozygosity in the population. Exclusion of the four endangered Tuscan cattle breeds did not result in losses in genetic diversity (T = -0.7%; CT = -1.2%), whereas exclusion of the non-endangered breeds (Chianina and Maremmana) did (T = 2.1%; CT = 3.9%); the simple exclusion of the Calvana breed from the former group led to losses in genetic diversity (T = 0.47%; CT = 2.34%), indicating a diverse significance for this breed. We showed how quantifying both within-population diversity and between-population differentiation in terms of allelic frequencies and allelic richness provides different and complementary information on the genetic backgrounds assessed and may help to implement priorities and strategies for conservation in livestock.
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Lenstra JA, Groeneveld LF, Eding H, Kantanen J, Williams JL, Taberlet P, Nicolazzi EL, Sölkner J, Simianer H, Ciani E, Garcia JF, Bruford MW, Ajmone-Marsan P, Weigend S. Molecular tools and analytical approaches for the characterization of farm animal genetic diversity. Anim Genet 2012; 43:483-502. [DOI: 10.1111/j.1365-2052.2011.02309.x] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2011] [Indexed: 12/30/2022]
Affiliation(s)
- J. A. Lenstra
- Faculty of Veterinary Medicine; Utrecht University; Utrecht; The Netherlands
| | - L. F. Groeneveld
- Institute of Farm Animal Genetics; Friedrich-Loeffler-Institut; Hoeltystr. 10; 31535; Neustadt; Germany
| | - H. Eding
- Animal Evaluations Unit; CRV; Arnhem; The Netherlands
| | - J. Kantanen
- Biotechnology and Food Research; MTT Agrifood Research Finland; FI-31600; Jokioinen; Finland
| | - J. L. Williams
- Parco Tecnologico Padano; via Einstein; 2600; Lodi; Italy
| | - P. Taberlet
- Laboratoire d'Ecologie Alpine; Université Joseph Fourier; BP 53; Grenoble; France
| | - E. L. Nicolazzi
- Istituto di Zootecnica and BioDNA Research Centre; Università Cattolica del Sacro Cuore; Piacenza; Italy
| | - J. Sölkner
- Department of Sustainable Agricultural Systems; Animal Breeding Group; BOKU - University of Natural Resources and Life Sciences; Vienna; Austria
| | - H. Simianer
- Department of Animal Sciences; Animal Breeding and Genetics Group; Georg-August-University Göttingen; 37075; Göttingen; Germany
| | - E. Ciani
- Department of General and Environmental Physiology; University of Bari “Aldo Moro”; Bari; Italy
| | - J. F. Garcia
- Universidade Estadual Paulista; Araçatuba; Brazil
| | - M. W. Bruford
- Organisms and Environment Division; School of Biosciences; Cardiff University; Cardiff; UK
| | - P. Ajmone-Marsan
- Istituto di Zootecnica and BioDNA Research Centre; Università Cattolica del Sacro Cuore; Piacenza; Italy
| | - S. Weigend
- Institute of Farm Animal Genetics; Friedrich-Loeffler-Institut; Hoeltystr. 10; 31535; Neustadt; Germany
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Lasagna E, Bianchi M, Ceccobelli S, Landi V, Martínez AM, Pla JLV, Panella F, Bermejo JVD, Sarti FM. Genetic relationships and population structure in three Italian Merino-derived sheep breeds. Small Rumin Res 2011. [DOI: 10.1016/j.smallrumres.2010.11.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Álvarez I, Gutiérrez J, Royo L, Fernández I, Goyache F. Quantifying diversity losses due to selection for scrapie resistance in three endangered Spanish sheep breeds using microsatellite information. Prev Vet Med 2009; 91:172-8. [PMID: 19625092 DOI: 10.1016/j.prevetmed.2009.06.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2008] [Revised: 06/01/2009] [Accepted: 06/21/2009] [Indexed: 10/20/2022]
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21
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BERTHOULY C, DO NGOC D, THÉVENON S, BOUCHEL D, NHU VAN T, DANES C, GROSBOIS V, HOANG THANH H, VU CHI C, MAILLARD JC. How does farmer connectivity influence livestock genetic structure? A case-study in a Vietnamese goat population. Mol Ecol 2009; 18:3980-91. [DOI: 10.1111/j.1365-294x.2009.04342.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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22
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Dalvit C, De Marchi M, Zanetti E, Cassandro M. Genetic variation and population structure of Italian native sheep breeds undergoing in situ conservation. J Anim Sci 2009; 87:3837-44. [PMID: 19717776 DOI: 10.2527/jas.2008-1682] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The genetic variability and presence of population substructures in 4 native Northern Italian sheep breeds, Alpagota, Brogna, Foza, and Lamon, undergoing in situ conservation, and 1 widespread Italian breed, Bergamasca, were studied by investigating 19 microsatellite markers. The breeds showed considerable genetic variability in terms of number of alleles and heterozygosity, with the exception of Alpagota, which was the least variable (0.607). Nevertheless, a significant deficit of heterozygotes was observed in each breed due to rather increased levels of inbreeding or to the presence of population substructures, probably caused by increased genetic variation in the founder populations. The analyses evidenced clear genetic differentiation (F(ST) = 0.085), reduced levels of admixture, and presence of private alleles among the breeds, confirming their genetic uniqueness. In particular, according to Reynolds genetic distances, Alpagota was the most differentiated, perhaps because it had been bred mostly in a rather isolated area. Loss of any of the investigated breeds would result in a loss of genetic diversity ranging from 0.5 to 1.6% of the total observed gene diversity. Results supported the decision to safeguard these breeds as important reservoirs of genetic diversity and suggested breeding and mating practices to maintain variability and to overcome within-breed substructures.
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Affiliation(s)
- C Dalvit
- Dipartimento di Scienze Animali, Università degli Studi di Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy.
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Traoré A, Álvarez I, Tambourá H, Fernández I, Kaboré A, Royo L, Gutiérrez J, Sangaré M, Ouédraogo-Sanou G, Toguyeni A, Sawadogo L, Goyache F. Genetic characterisation of Burkina Faso goats using microsatellite polymorphism. Livest Sci 2009. [DOI: 10.1016/j.livsci.2008.11.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bozzi R, Degl’Innocenti P, Rivera Diaz P, Nardi L, Crovetti A, Sargentini C, Giorgetti A. Genetic characterization and breed assignment in five Italian sheep breeds using microsatellite markers. Small Rumin Res 2009. [DOI: 10.1016/j.smallrumres.2009.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Glowatzki-Mullis ML, Muntwyler J, Bäumle E, Gaillard C. Genetic diversity of Swiss sheep breeds in the focus of conservation research. J Anim Breed Genet 2009; 126:164-75. [PMID: 19320774 DOI: 10.1111/j.1439-0388.2008.00768.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There is constant pressure to improve evaluation of animal genetic resources in order to prevent their erosion. Maintaining the integrity of livestock species as well as their genetic diversity is of paramount interest for long-term agricultural policies. One major use of DNA techniques in conservation is to reveal genetic diversity within and between populations. Forty-one microsatellites were analysed to assess genetic diversity in nine Swiss sheep breeds and to measure the loss of the overall diversity when one breed would become extinct. The expected heterozygosities varied from 0.65 to 0.74 and 10.8% of the total genetic diversity can be explained by the variation among breeds. Based on the proportion of shared alleles, each of the nine breeds were clearly defined in their own cluster in the neighbour-joining tree describing the relationships among the breeds. Bayesian clustering methods assign individuals to groups based on their genetic similarity and infer the number of populations. In STRUCTURE, this approach pooled the Valais Blacknose and the Valais Red. With BAPS method the two Valais sheep breeds could be separated. Caballero & Toro approach (2002) was used to calculate the loss or gain of genetic diversity when each of the breeds would be removed from the set. The changes in diversity based on between-breed variation ranged from -12.2% (Valais Blacknose) to 0% (Swiss Black Brown Mountain and Mirror Sheep); based on within-breed diversity the removal of a breed could also produce an increase in diversity (-0.6% to + 0.6%). Allelic richness ranged from 4.9 (Valais Red) to 6.7 (Brown Headed Meat sheep and Red Engadine Sheep). Breed conservation decisions cannot be limited to genetic diversity alone. In Switzerland, conservation goals are embedded in the desire to carry the cultural legacy over to future generations.
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Affiliation(s)
- M-L Glowatzki-Mullis
- Division of Experimental Clinical Research, VETSUISSE Faculty, University of Berne, Berne, Switzerland.
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26
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Álvarez∗ I, Traoré∗ A, Tamboura HH, Kaboré A, Royo LJ, Fernández I, Ouédraogo-Sanou G, Sawadogo L, Goyache F. Microsatellite Analysis Characterizes Burkina Faso as a Genetic Contact Zone Between Sahelian and Djallonké Sheep. Anim Biotechnol 2009; 20:47-57. [PMID: 19370454 DOI: 10.1080/10495390902786926] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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d'Angelo F, Albenzio M, Sevi A, Ciampolini R, Cecchi F, Ciani E, Muscio A. Genetic variability of the Gentile di Puglia sheep breed based on microsatellite polymorphism. J Anim Sci 2009; 87:1205-9. [DOI: 10.2527/jas.2008-1224] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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28
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Legaz E, Álvarez I, Royo L, Fernández I, Gutiérrez J, Goyache F. Genetic relationships between Spanish Assaf (Assaf.E) and Spanish native dairy sheep breeds. Small Rumin Res 2008. [DOI: 10.1016/j.smallrumres.2008.09.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Dalvit C, Saccà E, Cassandro M, Gervaso M, Pastore E, Piasentier E. Genetic diversity and variability in Alpine sheep breeds. Small Rumin Res 2008. [DOI: 10.1016/j.smallrumres.2008.09.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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30
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Álvarez I, Royo L, Gutiérrez J, Fernández I, Arranz J, Goyache F. Relationship between genealogical and microsatellite information characterizing losses of genetic variability: Empirical evidence from the rare Xalda sheep breed. Livest Sci 2008. [DOI: 10.1016/j.livsci.2007.06.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Vonholdt BM, Stahler DR, Smith DW, Earl DA, Pollinger JP, Wayne RK. The genealogy and genetic viability of reintroduced Yellowstone grey wolves. Mol Ecol 2008; 17:252-74. [PMID: 17877715 DOI: 10.1111/j.1365-294x.2007.03468.x] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The recovery of the grey wolf in Yellowstone National Park is an outstanding example of a successful reintroduction. A general question concerning reintroduction is the degree to which genetic variation has been preserved and the specific behavioural mechanisms that enhance the preservation of genetic diversity and reduce inbreeding. We have analysed 200 Yellowstone wolves, including all 31 founders, for variation in 26 microsatellite loci over the 10-year reintroduction period (1995-2004). The population maintained high levels of variation (1995 H(0) = 0.69; 2004 H(0) = 0.73) with low levels of inbreeding (1995 F(IS) = -0.063; 2004 F(IS) = -0.051) and throughout, the population expanded rapidly (N(1995) = 21; N(2004) = 169). Pedigree-based effective population size ratios did not vary appreciably over the duration of population expansion (1995 N(e)/N(g) = 0.29; 2000 N(e)/N(g) = 0.26; 2004 N(e)/N(g) = 0.33). We estimated kinship and found only two of 30 natural breeding pairs showed evidence of being related (average r = -0.026, SE = 0.03). We reconstructed the genealogy of 200 wolves based on genetic and field data and discovered that they avoid inbreeding through a wide variety of behavioural mechanisms including absolute avoidance of breeding with related pack members, male-biased dispersal to packs where they breed with nonrelatives, and female-biased subordinate breeding. We documented a greater diversity of such population assembly patterns in Yellowstone than previously observed in any other natural wolf population. Inbreeding avoidance is nearly absolute despite the high probability of within-pack inbreeding opportunities and extensive interpack kinship ties between adjacent packs. Simulations showed that the Yellowstone population has levels of genetic variation similar to that of a population managed for high variation and low inbreeding, and greater than that expected for random breeding within packs or across the entire breeding pool. Although short-term losses in variation seem minimal, future projections of the population at carrying capacity suggest significant inbreeding depression will occur without connectivity and migratory exchange with other populations.
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Affiliation(s)
- Bridgett M Vonholdt
- University of California, Los Angeles, Ecology and Evolutionary Biology, 621 Charles E. Young Dr South, Los Angeles, CA 90095, USA
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32
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Álvarez I, Royo L, Gutiérrez J, Fernández I, Arranz J, Goyache F. Genetic diversity loss due to selection for scrapie resistance in the rare Spanish Xalda sheep breed. Livest Sci 2007. [DOI: 10.1016/j.livsci.2007.01.147] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Kakoi H, Tozaki T, Gawahara H. Molecular analysis using mitochondrial DNA and microsatellites to infer the formation process of Japanese native horse populations. Biochem Genet 2007; 45:375-95. [PMID: 17265183 DOI: 10.1007/s10528-007-9083-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
To assess the genetic diversity of Japanese native horse populations, we examined seven such populations using mitochondrial DNA (mtDNA) and microsatellite analyses. Four reference populations of Mongolian horses and European breeds were employed as other equids. In the mtDNA analysis, the control region (D-loop) of 411 bp was sequenced, and 12 haplotypes with 33 variable sites were identified in the Japanese native horses. The phylogenetic tree constructed by haplogrouping and using worldwide geographic references indicated that the haplotypes of the Japanese native horses were derived from six equid clusters. Compared with the foreign populations, the Japanese native populations showed lower within-population diversity and higher between-population differentiation. Microsatellite analysis, using 27 markers, found an average number of alleles per locus of 9.6 in 318 native and foreign horses. In most native populations, the within-population diversity was lower than that observed in foreign populations. The genetic distance matrix based on allelic frequency indicated that several native populations had notably high between-population differentiation. The molecular co-ancestry-based genetic distance matrix revealed that the European populations were differentiated from the Japanese and Mongolian populations, and no clear groups could be identified among the Japanese native horse populations. The genetic distance matrices had few correlations with the geographic distribution of the Japanese native populations. Based on the results of both mtDNA and microsatellite analyses, it could be speculated that each native population was formed by the founder populations derived from Mongolian horses. The genetic construction of each population appears to have been derived from independent breeding in each local area since the time of population fission, and this was accompanied by drastic genetic drift in recent times. This information will help to elucidate the ancestry of Japanese native horses.
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Affiliation(s)
- Hironaga Kakoi
- Laboratory of Racing Chemistry, 1731-2 Tsuruta-machi, Utsunomiya, Tochigi 320-0851, Japan.
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Royo L, Álvarez I, Gutiérrez J, Fernández I, Goyache F. Genetic variability in the endangered Asturcón pony assessed using genealogical and molecular information. Livest Sci 2007. [DOI: 10.1016/j.livsci.2006.09.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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35
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Javier Azor P, Valera M, Gómez MD, Goyache F, Molina A. Genetic characterization of the Spanish Trotter horse breed using microsatellite markers. Genet Mol Biol 2007. [DOI: 10.1590/s1415-47572007000100009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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36
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Druml T, Curik I, Baumung R, Aberle K, Distl O, Sölkner J. Individual-based assessment of population structure and admixture in Austrian, Croatian and German draught horses. Heredity (Edinb) 2006; 98:114-22. [PMID: 17035951 DOI: 10.1038/sj.hdy.6800910] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
All over Europe, the number of draught horses has decreased drastically during the last 50 years. As a prerequisite for efficient management decisions, we analysed the conservation status in Austrian (Noriker Carinthia - NC, Noriker Salzburg - NS), Croatian (Croatian Coldblood - C, Posavina horse - P) and German (Altmaerkisch Coldblood - A, Black Forest horse - BF, Mecklenburg Coldblood - M, Rhenish German Draught horse - R, Saxon Thuringa Coldblood - ST, Schleswig Draught horse - Sch, South German Coldblood - SG) draught horses (434) using multilocus genotypic information from 30 (effectively 27) microsatellite loci. Populations located in areas with less intensive agricultural production (C, NC, NS, P and SG) had greater diversity within the population and estimated effective population size than A, BF, Sch, M, R and ST populations. The PCA plots revealed that populations form five separate groups. The 'Noriker' group (NC, NS and SG) and the 'Rhenish' group (A, M, R and ST) were the most distinctive (pairwise F(ST) values ranged from 0.078 to 0.094). The 'Croatian' group (C and P) was in the centre, while the BF and Sch populations formed two out-groups. A posterior Bayesian analysis detected further differentiation, mainly caused by political and geographical factors. Thus, it was possible to separate the South German Coldblood from the Austrian Noriker population where no subpopulation structure was detected. The admixture analysis revealed imprecise classification between C and P populations. A small but notable separation of R from A, M and ST populations was detected, while Sch and BF populations remained as out-groups. The information obtained should aid in making efficient conservation decisions.
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Affiliation(s)
- T Druml
- BOKU - University of Natural Resources and Applied Life Sciences Vienna, Vienna, Austria
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37
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Gutiérrez JP, Royo LJ, Alvarez I, Goyache F. MolKin v2.0: a computer program for genetic analysis of populations using molecular coancestry information. ACTA ACUST UNITED AC 2005; 96:718-21. [PMID: 16251515 DOI: 10.1093/jhered/esi118] [Citation(s) in RCA: 146] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- J P Gutiérrez
- Departamento de Producción Animal, Facultad de Veterinaria, Avda. Puerta de Hierro s/n, E-28040-Madrid, Spain.
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