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Whole-genome sequences suggest long term declines of spotted owl (Strix occidentalis) (Aves: Strigiformes: Strigidae) populations in California

View ORCID ProfileZachary R. Hanna, John P. Dumbacher, Rauri C.K. Bowie, Jeffrey D. Wall
doi: https://doi.org/10.1101/343434
Zachary R. Hanna
1Institute for Human Genetics, University of California, San Francisco, San Francisco, California, United States of America
2Museum of Vertebrate Zoology, University of California, Berkeley, Berkeley, California, United States of America
3Department of Ornithology & Mammalogy, California Academy of Sciences, San Francisco, California, United States of America
4Center for Comparative Genomics, California Academy of Sciences, San Francisco, California, United States of America
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  • For correspondence: Zachary.Hanna@ucsf.edu
John P. Dumbacher
3Department of Ornithology & Mammalogy, California Academy of Sciences, San Francisco, California, United States of America
4Center for Comparative Genomics, California Academy of Sciences, San Francisco, California, United States of America
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Rauri C.K. Bowie
2Museum of Vertebrate Zoology, University of California, Berkeley, Berkeley, California, United States of America
5Department of Integrative Biology, University of California Berkeley, Berkeley, California, United States of America.
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Jeffrey D. Wall
1Institute for Human Genetics, University of California, San Francisco, San Francisco, California, United States of America
2Museum of Vertebrate Zoology, University of California, Berkeley, Berkeley, California, United States of America
4Center for Comparative Genomics, California Academy of Sciences, San Francisco, California, United States of America
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Abstract

We analyzed whole-genome data of four spotted owls (Strix occidentalis) to provide a broad-scale assessment of the genome-wide nucleotide diversity across S. occidentalis populations in California. We assumed that each of the four samples was representative of its population and we estimated effective population sizes through time for each corresponding population. Our estimates provided evidence of long-term population declines in all California S. occidentalis populations. We found no evidence of genetic differentiation between northern spotted owl (S. o. caurina) populations in the counties of Marin and Humboldt in California. We estimated greater differentiation between populations at the northern and southern extremes of the range of the California spotted owl (S. o. occidentalis) than between populations of S. o. occidentalis and S. o. caurina in northern California. The San Diego County S. o. occidentalis population was substantially diverged from the other three S. occidentalis populations. These whole-genome data support a pattern of isolation-by-distance across spotted owl populations in California, rather than elevated differentiation between currently recognized subspecies.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted June 12, 2018.
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Whole-genome sequences suggest long term declines of spotted owl (Strix occidentalis) (Aves: Strigiformes: Strigidae) populations in California
Zachary R. Hanna, John P. Dumbacher, Rauri C.K. Bowie, Jeffrey D. Wall
bioRxiv 343434; doi: https://doi.org/10.1101/343434
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Whole-genome sequences suggest long term declines of spotted owl (Strix occidentalis) (Aves: Strigiformes: Strigidae) populations in California
Zachary R. Hanna, John P. Dumbacher, Rauri C.K. Bowie, Jeffrey D. Wall
bioRxiv 343434; doi: https://doi.org/10.1101/343434

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