1
|
Zoologist, traveller and explorer: celebrating the 60th anniversary of Alexei Vladimirovich Abramov. RUSSIAN JOURNAL OF THERIOLOGY 2022. [DOI: 10.15298/rusjtheriol.21.2.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
2
|
Shimozuru M, Jimbo M, Adachi K, Kawamura K, Shirane Y, Umemura Y, Ishinazaka T, Nakanishi M, Kiyonari M, Yamanaka M, Amagai Y, Ijuin A, Sakiyama T, Kasai S, Nose T, Shirayanagi M, Tsuruga H, Mano T, Tsubota T, Fukasawa K, Uno H. Estimation of breeding population size using DNA-based pedigree reconstruction in brown bears. Ecol Evol 2022; 12:e9246. [PMID: 36091344 PMCID: PMC9448969 DOI: 10.1002/ece3.9246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 07/18/2022] [Accepted: 07/27/2022] [Indexed: 11/11/2022] Open
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.
Collapse
Affiliation(s)
- Michito Shimozuru
- Laboratory of Wildlife Biology and Medicine, Faculty of Veterinary Medicine Hokkaido University Sapporo Japan
| | - Mina Jimbo
- Laboratory of Wildlife Biology and Medicine, Faculty of Veterinary Medicine Hokkaido University Sapporo Japan.,Hokkaido Research Organization Sapporo Japan
| | - Keisuke Adachi
- Laboratory of Wildlife Biology and Medicine, Faculty of Veterinary Medicine Hokkaido University Sapporo Japan
| | - Kei Kawamura
- Laboratory of Wildlife Biology and Medicine, Faculty of Veterinary Medicine Hokkaido University Sapporo Japan
| | - Yuri Shirane
- Laboratory of Wildlife Biology and Medicine, Faculty of Veterinary Medicine Hokkaido University Sapporo Japan.,Hokkaido Research Organization Sapporo Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Toshio Tsubota
- Laboratory of Wildlife Biology and Medicine, Faculty of Veterinary Medicine Hokkaido University Sapporo Japan
| | - Keita Fukasawa
- Center for Environmental Biology and Ecosystem Studies National Institute for Environmental Studies Tsukuba Japan
| | - Hiroyuki Uno
- Faculty of Agriculture Tokyo University of Agriculture and Technology Tokyo Japan
| |
Collapse
|
3
|
Takagi T, Tsuda Y, Torii H, Tamate HB, Kaneko S, Nagata J. Development of paternally‐inherited Y chromosome simple sequence repeats of sika deer and their application in genetic structure, artificial introduction, and interspecific hybridization analyses. POPUL ECOL 2022. [DOI: 10.1002/1438-390x.12109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshihito Takagi
- Graduate School of Symbiotic Systems Science and Technology Fukushima University Kanayagawa Fukushima Japan
| | - Yoshiaki Tsuda
- Sugadaira Research Station, Mountain Science Center (MSC) University of Tsukuba Ueda Nagano Japan
| | - Harumi Torii
- Center for Natural Environment Education Nara University of Education Takahata‐cho Nara Japan
| | | | - Shingo Kaneko
- Faculty of Symbiotic Systems Science Fukushima University Kanayagawa Fukushima Japan
| | - Junco Nagata
- Forestry and Forest Products Research Institute (FFPRI) Tsukuba Ibaraki Japan
| |
Collapse
|
4
|
Endo Y, Osada N, Mano T, Masuda R. Demographic History of the Brown Bear (Ursus arctos) on Hokkaido Island, Japan, Based on Whole-Genomic Sequence Analysis. Genome Biol Evol 2021; 13:6355033. [PMID: 34410373 PMCID: PMC8449831 DOI: 10.1093/gbe/evab195] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2021] [Indexed: 12/25/2022] Open
Abstract
Previous studies of the brown bear (Ursus arctos) on Hokkaido Island, Japan, have detected three geographically distinct subpopulations representing different mitochondrial lineages and shown that gene flow between subpopulations has occurred due to male-biased dispersal. In this study, we determined whole-genomic sequences for six Hokkaido brown bears and analyzed these data along with previously published genomic sequences of 17 brown bears from other parts of the world. We found that the Hokkaido population is genetically distinct from the other populations, keeping genetic diversity higher than the endangered populations in western Europe but lower than most populations on the continents. A reconstruction of historical demography showed no increase in population size for the Hokkaido population during the Eemian interglacial period (130,000–114,000 years ago). In a phylogenetic analysis of the autosomal data, the Hokkaido population formed a clade distinct from North American and European populations, showing that it has maintained genetic diversity independently from continental populations following geographical isolation on the island. This autosomal genetic similarity contrasts with the geographically separate mitochondrial lineages on Hokkaido and indicates the occurrence of male-driven gene flow between subpopulations.
Collapse
Affiliation(s)
- Yu Endo
- Department of Natural History Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan
| | - Naoki Osada
- Faculty of Information Science and Technology, Hokkaido University, Sapporo, Japan
| | - Tsutomu Mano
- Institute of Environmental Sciences, Hokkaido Research Organization, Sapporo, Japan
| | - Ryuichi Masuda
- Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo, Japan
| |
Collapse
|
5
|
Shirane Y, Shimozuru M, Yamanaka M, Tsuruga H, Nakanishi M, Ishinazaka T, Nose T, Kasai S, Shirayanagi M, Masuda Y, Fujimoto Y, Mano T, Sashika M, Tsubota T. Sex-biased dispersal and inbreeding avoidance in Hokkaido brown bears. J Mammal 2019. [DOI: 10.1093/jmammal/gyz097] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
AbstractNatal dispersal likely plays an important role in avoiding inbreeding among large carnivores. We tested the hypothesis that male-biased dispersal reduces close inbreeding by limiting the spatial overlap of opposite-sex pairs of close relatives in brown bears (Ursus arctos) in the Shiretoko Peninsula, Hokkaido, Japan. We genotyped 837 individuals collected in 1998–2017 at 21 microsatellite loci and performed parentage analysis. To calculate natal dispersal distance, we considered the site where the mother was identified as the birthplace of her offspring, and the site where the offspring were identified as their dispersed place. As predicted, we found that dispersal distances were significantly greater for males (12.4 km ± 1.0) than for females (7.7 km ± 0.9), and those for males increased from 3 years old, indicating that males begin to disperse around the time sexual maturation begins. Relatedness decreased with distance among pairs of females, and the mean relatedness was significantly higher between pairs of females than between pairs of males or between female–male pairs within 3 km. Closely related female–male pairs rarely (5–6%) resided in close proximity (< 3 km), compared with pairs of closely related females. Our study revealed that the potential for close inbreeding was low in Hokkaido brown bears because males are effective dispersers.
Collapse
Affiliation(s)
- Yuri Shirane
- Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, Hokkaido, Japan
| | - Michito Shimozuru
- Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, Hokkaido, Japan
| | - Masami Yamanaka
- Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, Hokkaido, Japan
| | - Hifumi Tsuruga
- Hokkaido Research Organization, Kita, Kita-ku, Sapporo, Hokkaido, Japan
| | | | | | | | - Shinsuke Kasai
- Shiretoko Nature Foundation, Iwaubetsu, Shari, Hokkaido, Japan
| | | | - Yasushi Masuda
- Shiretoko Nature Foundation, Iwaubetsu, Shari, Hokkaido, Japan
- Shari Town Office, 12 Hon-machi, Shari, Hokkaido, Japan
| | - Yasushi Fujimoto
- South Shiretoko Brown Bear Information Center, Shibetsu, Hokkaido, Japan
| | - Tsutomu Mano
- Hokkaido Research Organization, Kita, Kita-ku, Sapporo, Hokkaido, Japan
| | | | - Toshio Tsubota
- Department of Environmental Veterinary Science, Graduate School of Veterinary Medicine, Hokkaido University, Kita 18 Nishi 9, Kita-ku, Sapporo, Hokkaido, Japan
| |
Collapse
|
6
|
Abduriyim S, Zibibulla G, Eli S, Ismayil Z, Halik M. Phylogeny and genetic structure of the goitered gazelle (Artiodactyla, Bovidae) in north-western China indicated by the hypervariable mitochondrial control region. SYST BIODIVERS 2018. [DOI: 10.1080/14772000.2018.1470583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Shamshidin Abduriyim
- College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
- Department of Natural History Sciences, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Guzalnur Zibibulla
- College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Subinur Eli
- College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Zorigul Ismayil
- College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Mahmut Halik
- College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| |
Collapse
|