# Hokkaido Ken (北海道犬) Nihon Ken — Hokkaido Ken. Breed health: 775 dogs, 211 founders, gene diversity 99.18%. See all Hokkaido Ken: https://nihonken.org/pedigree/browse?breed=hokkaido&format=md ## Overview A free population-genetics overview across the 775 Hokkaido Ken in the database — gene diversity, inbreeding over time, and the ancestors shaping the lines. Every figure is a floor on incomplete pedigrees: true values may be higher. ## Genetic diversity - **Dogs:** 775 - **Founders:** 211 - **Gene diversity:** 99.18% - **Mean kinship:** 0.82% · sampled estimate - **Effective population (Ne):** Not estimable — Mean inbreeding is not rising in the data (ΔF ≤ 0), so Ne is not estimable. Pedigree-based estimate from the rate of inbreeding, not a census Ne; a floor given incomplete pedigrees. ## Inbreeding over time Mean cached COI per birth-year cohort (305 dogs with a computed COI). Population means, not individual COIs. 1986 — 6.25% (3 dogs) 1995 — 12.50% (3 dogs) 1997 — 15.63% (3 dogs) 1998 — 0.00% (1 dogs) 1999 — 0.00% (2 dogs) 2000 — 15.63% (5 dogs) 2001 — 10.42% (6 dogs) 2002 — 10.94% (6 dogs) 2003 — 5.40% (11 dogs) 2004 — 14.85% (6 dogs) 2005 — 7.50% (5 dogs) 2006 — 2.61% (6 dogs) 2007 — 19.01% (6 dogs) 2008 — 1.96% (2 dogs) 2009 — 16.30% (7 dogs) 2010 — 6.25% (7 dogs) 2011 — 0.00% (6 dogs) 2012 — 0.00% (3 dogs) 2013 — 2.89% (10 dogs) 2014 — 0.26% (6 dogs) 2015 — 7.47% (19 dogs) 2016 — 0.12% (13 dogs) 2017 — 2.21% (28 dogs) 2018 — 6.72% (29 dogs) 2019 — 2.07% (30 dogs) 2020 — 0.42% (17 dogs) 2021 — 1.23% (23 dogs) 2022 — 0.41% (11 dogs) 2023 — 0.94% (4 dogs) 2024 — 0.00% (2 dogs) 2025 — 0.02% (1 dogs) ## Top ancestors - **#1:** [Jakob de Takara · centrality 0.00019923569265597874](https://nihonken.org/pedigree/dogs/739fada3-1159-4b4f-86bc-11c370a04e07) - **#2:** [Eros Sumící Krídla · centrality 0.00018067628773686719](https://nihonken.org/pedigree/dogs/0134b474-8afb-49ea-8e3e-3c269493c832) - **#3:** [Dolly Czech Jakobin · centrality 0.00018067628773686719](https://nihonken.org/pedigree/dogs/dbebfe43-81fb-4fd3-9f23-1c0861fc44df) - **#4:** [Itadaki No Hatsuhime Go · centrality 0.00017587640130820959](https://nihonken.org/pedigree/dogs/d6df0dbd-4c91-4e5c-8bb3-2f83aa8492cb) - **#5:** [Jakobinne Kuriyama Yonebayashiso · centrality 0.00017203947662725906](https://nihonken.org/pedigree/dogs/545e8141-73a9-4f4a-bceb-8b35bbdec994) - **#6:** [Katsuhime Tomikawatoyoda · centrality 0.00015762251348520092](https://nihonken.org/pedigree/dogs/c9645108-15b9-4857-a65b-3198d5859734) - **#7:** [Maruto Hokkai Komatsu · centrality 0.00015046745437862256](https://nihonken.org/pedigree/dogs/0323fcc9-64a8-4efa-9d2a-cdfd44d67d94) - **#8:** [Nidai Hakuyuu Howasou · centrality 0.00014902470102851406](https://nihonken.org/pedigree/dogs/2b319ef9-90c1-4292-80a5-6ce2e356a288) - **#9:** [Akuri Sumící Krídla · centrality 0.00014527697669690771](https://nihonken.org/pedigree/dogs/5d5077dc-e364-4910-a13e-d29217b18f6c) - **#10:** [Koujin Pinneshiri Sugiyama Kensha · centrality 0.00014142678690500554](https://nihonken.org/pedigree/dogs/ebeef471-334d-45db-946a-d9c5759a54f5) ## Dogs - **Orochi-Mochi Riona Centrum:** [](https://nihonken.org/pedigree/dogs/167c36cc-1ae7-4a10-9cc8-2c7433156f93) - **Shirakamiryu Noshiro Katoso 白神龍:** [DOKENHO 138549](https://nihonken.org/pedigree/dogs/bd10712c-1f27-4560-8ad0-54cbc49647e0) - **Bonki Bezdrevská perla:** [](https://nihonken.org/pedigree/dogs/80d69336-417f-40b9-a385-8a28a16a9939) - **Ezo Hakuryuu Iwamizawa Yakata エゾ伯龍 岩見沢やかた:** [DOKENHO 135947](https://nihonken.org/pedigree/dogs/269ec0e9-ca8b-4ba3-b0de-f5aee101f47d) - **Fuuga Oosaka Fujitakasou 楓牙 ・ 大阪藤鷹荘:** [DOKENHO 134098](https://nihonken.org/pedigree/dogs/d0c81707-1bb8-4bcc-a2c8-a3cf28ced1ab) - **Hokuou Minamiuonuma Hanabusasou 北旺 南魚沼英荘:** [](https://nihonken.org/pedigree/dogs/e4c4df81-2b71-4958-b94f-13d8b8dbac1d) - **Hotaru Osaka Nishikawa 蛍 大阪西川:** [DOKENHO 139584](https://nihonken.org/pedigree/dogs/5a9736b4-0a81-400a-a5b2-b90575e80f4d) - **Mizuki Horakuma Sugai:** [DOKENHO 138192](https://nihonken.org/pedigree/dogs/4c6d7344-5312-40f9-93d5-e10d023acd9b) - **Rera Honomiso レラ 種実荘:** [DOKENHO 139241](https://nihonken.org/pedigree/dogs/c16fde73-e97c-4818-a1f0-fd3686c8c21c) - **Ryujin Wakkanai Takekataso 龍臣 稚內武方荘:** [DOKENHO 138097](https://nihonken.org/pedigree/dogs/c4347e4a-4080-488a-b9ed-ee52dfd49049) - **Tenhou Howasou 天宝 穂和荘:** [DOKENHO 138188](https://nihonken.org/pedigree/dogs/85641c00-7b5b-4638-918a-52dd8e9eaa8e) - **Tenichihime Hokkai Ryouyuusou 天一姫 北海猟雄荘:** [](https://nihonken.org/pedigree/dogs/339a3513-32d3-4643-992c-8fe4d277bdfc) - **Toboetsuki go Mimi wo Sumaseba:** [](https://nihonken.org/pedigree/dogs/f409cf63-d43b-4143-8c31-6edbfa44784f) - **Kina Yokohama Michi Inukaisakurasou 希奈 横浜道犬海桜荘:** [DOKENHO 139581](https://nihonken.org/pedigree/dogs/fa53bdbb-9c4c-4a52-8572-a288df53dec0) - **Ran Yokohama Michi Inukaisakurasou 蘭 横浜道犬海桜荘:** [](https://nihonken.org/pedigree/dogs/efd1f10f-ffba-429f-8fa5-5bd72dbe0c81) - **Chitose Shirafuji Kitami Hokuryuusou 北見北龍荘:** [DOKENHO 134415](https://nihonken.org/pedigree/dogs/39849a8b-b693-45d1-8c62-a2f2a268a2b5) - **Ryouta Eimeisou 涼太:** [](https://nihonken.org/pedigree/dogs/2c6b0a5c-fb4a-4fd4-aed8-38e45ed3a250) - **Terumomo Sakae Demurasou 輝桃:** [DOKENHO 134186](https://nihonken.org/pedigree/dogs/97f5e4a9-c1d9-4f16-b9fc-329f68c9f663) - **Aikahime Asahikawa Katagiri:** [DOKENHO 129252](https://nihonken.org/pedigree/dogs/d81138a3-7f12-42c8-8867-43d920d21c29) - **Akane Tomikawa Toyota:** [DOKENHO 133848](https://nihonken.org/pedigree/dogs/ab73d12d-5a6a-4778-b929-f33c0554e66b) - **Akasatohime Shishidosou:** [](https://nihonken.org/pedigree/dogs/769137fd-659e-477c-8142-7a684ca8adf5) - **Akeba Otaru Oota:** [DOKENHO 134818](https://nihonken.org/pedigree/dogs/8e6cfbc4-73cf-4199-b93f-d140b7b22b35) - **Aketora IshiKari Shibata 朱虎・ 石狩柴田:** [](https://nihonken.org/pedigree/dogs/dfb7947c-98e1-4d7f-83c8-ab5d03fd485c) - **Akihime Sapporo Touhachi 札幌東八:** [DOKENHO 131727](https://nihonken.org/pedigree/dogs/c28b34fa-3656-4be3-80f3-e77ec3c37db7) --- **Navigate:** [Home](https://nihonken.org/pedigree/?format=md) · [Search](https://nihonken.org/pedigree/browse?format=md) · [Litters](https://nihonken.org/pedigree/litters?format=md) · [Breeders](https://nihonken.org/pedigree/breeders?format=md) · [LLM guide](https://nihonken.org/pedigree/llms.txt) _Search by name: https://nihonken.org/pedigree/browse?q=NAME&format=md_