Ririko Go Koshiwasou
Registration n° JKC-JS-00014/22-0 · NIPPO Registered
- Breeder & owner
- Yosuke Kobayashi
- Kennel
- Koshiwasou
- Gender
- Female
- Date of birth
- 5 May 2018
- Country of birth
- Japan
- Colour
- Red
Genetic indicators
COI — inbreeding
8.59%
Moderate. Common ancestors: Koujinryuu Go Tosa Kuroshiosou, Kenryuu Go Sanuki Mizumotosou.
AVK — distinct ancestors
46.8%
29 distinct ancestors out of 62 possible. Among known ancestors only: 64.4%.
Pedigree completeness
72.6%
17 empty slots. The AVK takes them into account, so read both figures together.
Value for the breed's diversity
Very common lines — rarer than 14% of the Shiba born in the last 15 years (since 2012)
How often its ancestors (over 6 generations) appear in the pedigrees of the 11,443 recent dogs: rare lines bring new genes to the breed. Over: 6 generations 8 generations 10 generations
Common ancestors and how they connect 2
Over 5 generations: each ancestor found on both the sire's and the dam's side, and what it adds to the COI.
| Ancestor | Sire's side | Dam's side | Share of the COI |
|---|---|---|---|
| Koujinryuu Go Tosa Kuroshiosou ♂ | gen. 3gen. 4 ×2 | gen. 4 ×2 | 5.47% |
| Kenryuu Go Sanuki Mizumotosou ♂ | gen. 3 | gen. 3 | 3.13% |
| COI over 5 generations | 8.59% | ||
How the lines connect
Only the dogs that lead to a common ancestor are drawn. Each coloured line goes from a common ancestor down to its descendants. Click a dog to open its page.
Sire's side Dam's side Coloured circles: common ancestors, same colours as in the pedigree
How these figures are calculated
COI — Wright's formula: F = Σ (½)n₁+n₂+1 × (1 + FA), summed over every path through a common ancestor A. The number of generations must be fixed for two dogs to be comparable: a more complete pedigree mechanically raises the figure.
AVK — distinct ancestors divided by the theoretical number of ancestors. Over 5 generations there are 62 possible slots. 100% means no ancestor appears twice.
Completeness — the share of slots actually filled in. The AVK is misleading without it: a half-empty pedigree shows a low AVK even with no inbreeding at all, simply because data is missing.
Pedigree
The whole tree fits on screen. Pinch to zoom in on a dog.
Gekkoumaru Go Sanuki Mizumotosou ♂月光丸号 讃岐水本荘JKC-NP/H26-30060
JapanJapan
2010 Nippo Grand National BISKoujinryuu Go Tosa Kuroshiosou ♂光神竜号 土佐黒潮荘NIPPO H19-12096, JS -07914/14-0Japan
Suzune Go Shimanamisou ♀寿々音号 しまなみ荘NIPPO H20-9334JapanJapan
2013 NIPPO Grand National BOSKenryuu Go Sanuki Mizumotosou ♂健竜号 讃岐水本荘JKC-JS -06277/16-0, NP/H22-15202JapanJapan
Haruna Go Koshiwasou ♀JKC-NP/H27-16177JapanJapan2013 NIPPO Grand National BOSKenryuu Go Sanuki Mizumotosou ♂健竜号 讃岐水本荘JKC-JS -06277/16-0, NP/H22-15202Japan
4nd place in class 107 Grand National NIPPO; 2nd place in class Seiken B 110-Grand National NIPPOKoujinhime Go Sanuki Mizumotosou ♀NIPPO H22-5259JapanJapanSame colour, same dog: these ancestors appear several times in this pedigree.
Offspring and relatives
Grouped by litter, with both parents at the top of each block. Click to see the puppies of a dog.
Direct offspring 2 litters · 2 dogs
♂ Jukomaru Go Kosiwa JpRed · born in Japan · 
lives in PolandHD AED 0Patella 0Eyes Clear 2024
Full siblings 1 litter · 1 dog
♀ Yumetsukihime Go Fuji HachimansouRed · born in Japan
Half-siblings, sire's side 6 litters · 6 dogs
♂ Daishin Go Kosiwa JpRed · born in Japan · lives in PolandHD AED 0
♀ Kaoru Go KoshiwasouRed · born in Japan · 
lives in FrancePatella 1
♂ Gekkou Hidemaru Go KoshiwasouRed · born in Japan · lives in PolandHD AED 0Patella 0Eyes Clear
♀ Tsuki No Hana Go KoshiwasouRed · born & living in Japan
- ♀ Tenshinkisaki go KoshiwasouRed · born & living in Japan
Added by Edyta Gajewska. Last updated by esco 15 May 2025.