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Estimation of breeding population size using DNA-based pedigree reconstruction in brown bears

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Title: Estimation of breeding population size using DNA-based pedigree reconstruction in brown bears
Authors: Shimozuru, Michito Browse this author →KAKEN DB
Jimbo, Mina Browse this author
Adachi, Keisuke Browse this author
Kawamura, Kei Browse this author
Shirane, Yuri Browse this author
Umemura, Yoshihiro Browse this author
Ishinazaka, Tsuyoshi Browse this author
Nakanishi, Masanao Browse this author
Kiyonari, Mayu Browse this author
Yamanaka, Masami Browse this author
Amagai, Yukihiro Browse this author
Ijuin, Ayaho Browse this author
Sakiyama, Tomoki Browse this author
Kasai, Shinsuke Browse this author
Nose, Takane Browse this author
Shirayanagi, Masataka Browse this author
Tsuruga, Hifumi Browse this author
Mano, Tsutomu Browse this author
Tsubota, Toshio Browse this author →KAKEN DB
Fukasawa, Keita Browse this author
Uno, Hiroyuki Browse this author
Keywords: breeding population size
brown bear
microsatellite analysis
pedigree reconstruction
population estimate
Ursus arctos
Issue Date: 6-Sep-2022
Publisher: John Wiley & Sons
Journal Title: Ecology and evolution
Volume: 12
Issue: 9
Start Page: e9246
Publisher DOI: 10.1002/ece3.9246
Abstract: Robust estimates of demographic parameters are critical for effective wildlife conservation and management but are difficult to obtain for elusive species. We estimated the breeding and adult population sizes, as well as the minimum population size, in a high-density brown bear population on the Shiretoko Peninsula, in Hokkaido, Japan, using DNA-based pedigree reconstruction. A total of 1288 individuals, collected in and around the Shiretoko Peninsula between 1998 and 2020, were genotyped at 21 microsatellite loci. Among them, 499 individuals were identified by intensive genetic sampling conducted in two consecutive years (2019 and 2020) mainly by noninvasive methods (e.g., hair and fecal DNA). Among them, both parents were assigned for 330 bears, and either maternity or paternity was assigned to 47 and 76 individuals, respectively. The subsequent pedigree reconstruction indicated a range of breeding and adult (>= 4 years old) population sizes: 128-173 for female breeders and 66-91 male breeders, and 155-200 for female adults and 84-109 male adults. The minimum population size was estimated to be 449 (252 females and 197 males) in 2019. Long-term continuous genetic sampling prior to a short-term intensive survey would enable parentage to be identified in a population with a high probability, thus enabling reliable estimates of breeding population size for elusive species.
Rights: Estimation of breeding population size using DNA-based pedigree reconstruction in brown bears/Michito Shimozuru, Mina Jimbo, Keisuke Adachi, Kei Kawamura, Yuri Shirane, Yoshihiro Umemura, Tsuyoshi Ishinazaka, Masanao Nakanishi, Mayu Kiyonari, Masami Yamanaka, Yukihiro Amagai, Ayaho Ijuin, Tomoki Sakiyama, Shinsuke Kasai, Takane Nose, Masataka Shirayanagi, Hifumi Tsuruga, Tsutomu Mano, Toshio Tsubota, Keita Fukasawa, Hiroyuki Uno/Ecology and Evolution 12(9).Copyright (c) 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
Type: article
Appears in Collections:獣医学院・獣医学研究院 (Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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