Joey Growth
Return to the Joey Growth Guide
Use the main Joey Growth page to move between the growth overview and each stage of joey development.
Breeding Information
Sugar Glider Kinship and COI Chart
Original sugar glider kinship and COI chart with relationship color key, COI notes, recommended COI ranges, and breeding line-planning guidance.
Sugar Glider Kinship, COI, and Responsible Pairing
Kinship and coefficient of inbreeding, often called COI, help breeders evaluate how closely related two sugar gliders are before making a pairing. This page combines the original Pet Sugar Gliders Kinship / COI chart, the color key, and line-planning notes into one updated breeding reference.
COI should carry more weight than a simple relationship label. Relationship terms help you understand the family connection, but COI gives a clearer picture of genetic risk when complete pedigree information is available.
Original Chart
Original Kinship / COI Chart
This is the original chart image from the old Kinship / COI page. Click the chart to enlarge it.
Color Key from the Original Chart
| Color | Meaning |
|---|---|
| Inbreeding: These pairings are very closely related and should be avoided. They have the highest likelihood of genetic defects and issues. | |
| Close line breeding: These pairings should only be done limitedly when necessary to achieve, perfect, and maintain certain characteristics by responsible and experienced breeders. | |
| Line breeding: Pairings can be done limitedly to achieve, perfect, and maintain certain characteristics by responsible and experienced breeders. | |
| Distant line breeding: At this point, some breeders may classify the gliders as unrelated and safely pair them with limited possibilities of potential genetic problems. | |
| “Unrelated”: Enough genetic difference to avoid most problems related to inbreeding or line breeding. |
COI
COI Notes
COI is more important than relationship. When choosing a pairing, let the COI of the joey overrule the relationship.
The chart assumes that the COI of the common ancestor is zero. The range of COIs in the relationship chart is a result of full siblings or half siblings from the common ancestor or ancestors.
Currently Recommended COI
- Inbreeding: 12.5% to 100%
- Close line breeding: 6.3% to 3.1%
- Line breeding: 3.1% to 1.6%
- Distant line breeding: 1.6% to 0.04%
- “Unrelated”: 0.04% to 0%
Download the PDF
The original site also included a PDF version of the Kinship / COI chart.