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Type of publication: Journal Article
Type of document: Full Paper

Year: 2020

Authors: Fitak, RR; Mohandesan, E; Corander, J; Yadamsuren, A; Chuluunbat, B; Abdelhadi, O; Raziq, A; Nagy, P; Walzer, C; Faye, B; Burger, PA

Title: Genomic signatures of domestication in Old World camels.

Source: Commun Biol. 2020; 3(1):316

Authors Vetmeduni Vienna:

Burger Pamela
Fitak Robert
Mohandesan Elmira
Walzer Christian

Vetmed Research Units
Research Institute of Wildlife Ecology, Conservation Medicine
Institute of Population Genetics
Research Institute of Wildlife Ecology

Project(s): Genomic footprints of domestication in Old World camelids

Characterization of the immunogenome in Old World camelids

Domestication begins with the selection of animals showing less fear of humans. In most domesticates, selection signals for tameness have been superimposed by intensive breeding for economical or other desirable traits. Old World camels, conversely, have maintained high genetic variation and lack secondary bottlenecks associated with breed development. By re-sequencing multiple genomes from dromedaries, Bactrian camels, and their endangered wild relatives, here we show that positive selection for candidate genes underlying traits collectively referred to as 'domestication syndrome' is consistent with neural crest deficiencies and altered thyroid hormone-based signaling. Comparing our results with other domestic species, we postulate that the core set of domestication genes is considerably smaller than the pan-domestication set - and overlapping genes are likely a result of chance and redundancy. These results, along with the extensive genomic resources provided, are an important contribution to understanding the evolutionary history of camels and the genomic features of their domestication.

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