Hybridation entre un Mouflon de Corse (Ovis ammon musimon Schreber, 1872) et des brebis de divers génotypes: gènes pour la coloration pigmentaire

Lauvergne, J. J.; Denis, B; Théret, Marcel

doi:10.1186/1297-9686-9-2-151

Cited by 7 publications

(4 citation statements)

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“…The current pattern of differentiation within Ovis has been influenced by multiple evolutionary and demographical events such as migration, introgression, mutation, genetic drift, adaptation and isolation, along with natural and/or human-mediated mouflon x domestic sheep crossbreeding (Barbato et al, 2017; Lauvergne, Denis & Théret, 1977; Schroder et al, 2016). Records of crossbreeding between feral and domestic sheep are available since Roman times (Pliny the Elder, 1906), and signals of domestic sheep introgression into mouflon have been reported using microsatellite analyses both in mainland and island populations (Guerrini et al, 2015; Lorenzini et al, 2011; Schroder et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Identification of an ancestral haplotype in the mitochondrial phylogeny of the ovine haplogroup B

Mereu

Pirastru

Barbato

et al. 2019

PeerJ

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BackgroundEuropean mouflon (Ovis orientalis musimon) has been reintroduced in mainland Europe since the 18th-century sourcing from the Sardinian and Corsican autochthonous mouflon populations. The European mouflon is currently considered the feral descendent of the Asian mouflon (O. orientalis), and the result of first wave of sheep domestication occurred 11,000 years ago in the Fertile Crescent, and brought to Corsica and Sardinia ca. 6,000 years ago, where they still live as autochthonous populations. However, this phylogeny is based on mitogenome sequences of European mouflon individuals exclusively.MethodsWe sequenced the first complete mtDNA of the long-time isolated Sardinian mouflon and compared it with several ovine homologous sequences, including mouflon from mainland Europe and samples representative of the five known mitochondrial domestic sheep haplogroups. We applied Bayesian inference, Maximum Likelihood and Integer Neighbour-Joining network methods and provided a robust, fully-resolved phylogeny with strong statistical support for all nodes.ResultsWe identified an early split (110,000 years ago) of the Sardinian mouflon haplotype from both sheep and mainland European mouflon belonging to haplogroup B, the latter two sharing a more recent common ancestor (80,000 years ago). Further, the Sardinian mouflon sequence we generated had the largest genetic distance from domestic sheep haplogroups (0.0136 ± 0.004) among mouflon species. Our results suggest the Sardinian mouflon haplotype as the most ancestral in the HPG-B lineage, hence partially redrawing the known phylogeny of the genus Ovis.

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Section: Introductionmentioning

confidence: 99%

Identification of an ancestral haplotype in the mitochondrial phylogeny of the ovine haplogroup B

Mereu

Pirastru

Barbato

et al. 2019

PeerJ

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“…Despite coexistence and spatial overlap of mouflon with chamois and sheep, and the close interaction that may occur among them [ 66 , 67 ], M . conjunctivae was detected only sporadically in mouflon.…”

Section: Discussionmentioning

confidence: 99%

Long-term dynamics of Mycoplasma conjunctivae at the wildlife-livestock interface in the Pyrenees

et al. 2017

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Functional roles of domestic and wild host populations in infectious keratoconjunctivitis (IKC) epidemiology have been extensively discussed claiming a domestic reservoir for the more susceptible wild hosts, however, based on limited data. With the aim to better assess IKC epidemiology in complex host-pathogen alpine systems, the long-term infectious dynamics and molecular epidemiology of Mycoplasma conjunctivae was investigated in all host populations from six study areas in the Pyrenees and one in the Cantabrian Mountains (Northern Spain). Detection of M. conjunctivae was performed by qPCR on 3600 eye swabs collected during seven years from hunted wild ungulates and sympatric domestic sheep (n = 1800 animals), and cluster analyses of the strains were performed including previous reported local strains. Mycoplasma conjunctivae was consistently detected in three Pyrenean chamois (Rupicapra p. pyrenaica) populations, as well as in sheep flocks (17.0% of sheep) and occasionally in mouflon (Ovis aries musimon) from the Pyrenees (22.2% in one year/area); statistically associated with ocular clinical signs only in chamois. Chamois populations showed different infection dynamics with low but steady prevalence (4.9%) and significant yearly fluctuations (0.0%– 40.0%). Persistence of specific M. conjunctivae strain clusters in wild host populations is demonstrated for six and nine years. Cross-species transmission between chamois and sheep and chamois and mouflon were also sporadically evidenced. Overall, independent M. conjunctivae sylvatic and domestic cycles occurred at the wildlife-livestock interface in the alpine ecosystems from the Pyrenees with sheep and chamois as the key host species for each cycle, and mouflon as a spill-over host. Host population characteristics and M. conjunctivae strains resulted in different epidemiological scenarios in chamois, ranging from the fading out of the mycoplasma to the epidemic and endemic long-term persistence. These findings highlight the capacity of M. conjunctivae to establish diverse interactions and persist in host populations, also with different transmission conditions.

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“…The production of wild/domestic sheep fertile hybrids is an occasional event that can occur in geographical areas that host sheep farms and free ranging mouflons [ 107 ]. Such hybrids were already known during the Roman empire, when they were called umbri as reported by Pliny the Elder [ 108 ].…”

Section: Main Textmentioning

confidence: 99%

“…In order to check the presence and the level of potential introgression of the domestic component into hybrids, molecular analyses represent a valid and accurate method of investigation. Molecular approaches that are able to discriminate between wild, domestic and hybrid individuals have been developed in the last decades [ 107 , 112 , 117 – 119 ]. Such analyses are based on the often combined use of mitochondrial and nuclear markers such as microsatellite and single nucleotide polymorphisms, which represent a rapid and effective tool and are very useful in preserving and managing wild ungulate populations.…”

Section: Main Textmentioning

confidence: 99%

Phenotype transition from wild mouflon to domestic sheep

Mereu,

Pirastru,

Sanna

et al. 2024

Genet Sel Evol

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The domestication of animals started around 12,000 years ago in the Near East region. This “endless process” is characterized by the gradual accumulation of changes that progressively marked the genetic, phenotypic and physiological differences between wild and domesticated species. The main distinctive phenotypic characteristics are not all directly attributable to the human-mediated selection of more productive traits. In the last decades, two main hypotheses have been proposed to clarify the emergence of such a set of phenotypic traits across a variety of domestic species. The first hypothesis relates the phenotype of the domesticated species to an altered thyroid hormone-based signaling, whereas the second one relates it to changes in the neural crest cells induced by selection of animals for tameness. These two hypotheses are not necessarily mutually exclusive since they may have contributed differently to the process over time and space. The adaptation model induced by domestication can be adopted to clarify some aspects (that are still controversial and debated) of the long-term evolutionary process leading from the wild Neolithic mouflon to the current domestic sheep. Indeed, sheep are among the earliest animals to have been domesticated by humans, around 12,000 years ago, and since then, they have represented a crucial resource in human history. The aim of this review is to shed light on the molecular mechanisms and the specific genomic variants that underlie the phenotypic variability between sheep and mouflon. In this regard, we carried out a critical review of the most recent studies on the molecular mechanisms that are most accredited to be responsible for coat color and phenotype, tail size and presence of horns. We also highlight that, in such a complicate context, sheep/mouflon hybrids represent a powerful and innovative model for studying the mechanism by which the phenotypic traits related to the phenotypic responses to domestication are inherited. Knowledge of these mechanisms could have a significant impact on the selection of more productive breeds. In fact, as in a journey back in time of animal domestication, the genetic traits of today’s domestic species are being progressively and deliberately shaped according to human needs, in a direction opposite to that followed during domestication.

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Hybridation entre un Mouflon de Corse (Ovis ammon musimon Schreber, 1872) et des brebis de divers génotypes: gènes pour la coloration pigmentaire

Cited by 7 publications

References 1 publication

Identification of an ancestral haplotype in the mitochondrial phylogeny of the ovine haplogroup B

Identification of an ancestral haplotype in the mitochondrial phylogeny of the ovine haplogroup B

Long-term dynamics of Mycoplasma conjunctivae at the wildlife-livestock interface in the Pyrenees

Phenotype transition from wild mouflon to domestic sheep

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