Inbreeding and genetic load in a pair of sibling grouse species: Tetrastes sewersowi and T. bonasia

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Inbreeding and genetic load in a pair of sibling grouse species : Tetrastes sewersowi and T. bonasia

Song, Kai, 1988- (author): Uppsala universitet,Zooekologi,Chinese Acad Sci, Inst Zool, Key Lab Anim Ecol & Conservat Biol, Beijing 100101, Peoples R China

van der Valk, Tom (author): Uppsala universitet,Molekylär evolution

Gao, Bin (author): Chinese Acad Sci, Inst Zool, Key Lab Anim Ecol & Conservat Biol, Beijing 100101, Peoples R China.

Halvarsson, Peter (author): Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för biomedicin och veterinär folkhälsovetenskap (BVF),Department of Biomedical Science and Veterinary Public Health

Fang, Yun (author): Chinese Acad Sci, Inst Zool, Key Lab Anim Ecol & Conservat Biol, Beijing 100101, Peoples R China.

Xie, Wendong (author): Chinese Acad Sci, Inst Zool, Key Lab Anim Ecol & Conservat Biol, Beijing 100101, Peoples R China.

Klaus, Siegfried (author): Hinterweg 23, D-07749 Jena, Germany.

Han, Zhiming (author): Chinese Acad Sci, Inst Zool, State Key Lab Reprod Biol, Beijing 100101, Peoples R China.

Sun, Yue-Hua (author): Chinese Acad Sci, Inst Zool, Key Lab Anim Ecol & Conservat Biol, Beijing 100101, Peoples R China.

Höglund, Jacob (author): Uppsala universitet,Zooekologi

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Elsevier, 2024
2024
English.
In: Avian Research. - : Elsevier. - 2053-7166. ; 15

Related links:: https://doi.org/10.1...; show more...; https://uu.diva-port... (primary) (Raw object); https://pub.epsilon.... (primary) (Raw object) (free); https://urn.kb.se/re...; https://doi.org/10.1...; https://res.slu.se/i...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

Genetic load and inbreeding are recognized as important factors to be considered in conservation programs. Elevated levels of both can increase the risk of population extinction by negatively impacting fitness-related characters in many species of plants and animals, including humans (inbreeding depression). Genomic techniques are increasingly used in measuring and understanding genetic load and inbreeding and their importance in evolution and conservation. We used whole genome resequencing data from two sibling grouse species in subarctic Eurasia to quantify both. We found a large range of inbreeding measured as FROH (fraction of runs of homozygosity) in individuals from different populations of Chinese Grouse (Tetrastes sewerzowi) and Hazel Grouse (T. bonasia). FROH estimated from genome-wide runs of homozygosity (ROH) ranged from 0.02 to 0.24 among Chinese Grouse populations and from 0.01 to 0.44 in Hazel Grouse. Individuals from a population of Chinese Grouse residing in the Qilian mountains and from the European populations of Hazel Grouse (including samples from Sweden, Germany and Northeast Poland) were the most inbred (FROH ranged from 0.10 to 0.23 and 0.11 to 0.44, respectively). These levels are comparable to other highly inbred populations of birds. Hazel Grouse from northern China and Chinese Grouse residing in the Qinghai-Tibetan Plateau showed relatively lower inbreeding levels. Comparisons of the ratio between deleterious missense mutations and synonymous mutations revealed higher levels in Chinese Grouse as compared to Hazel Grouse. These results are possibly explained by higher fixation rates, mutational melt down, in the range-restricted Chinese Grouse compared to the wide-ranging Hazel Grouse. However, when we compared the relatively more severe class of loss-of-function mutations, Hazel Grouse had slightly higher levels than Chinese Grouse, a result which may indicate that purifying selection (purging) has been more efficient in Chinese Grouse on this class of mutations.

Subject headings

NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)

Keyword

Genetic load
Inbreeding
Purifying selection
Qinghai-Tibetan Plateau
ROH
Tetrastes

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By the author/editor: Song, Kai, 1988-; van der Valk, To ...; Gao, Bin; Halvarsson, Pete ...; Fang, Yun; Xie, Wendong; show more...; Klaus, Siegfried; Han, Zhiming; Sun, Yue-Hua; Höglund, Jacob; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Genetics

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Evolutionary Bio ...

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Zoology

Articles in the publication: Avian Research

By the university: Uppsala University; Swedish University of Agricultural Sciences

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