hybridclock: How Long Have Hybrids Been Forming? Hybrid Population Histories
from Diagnostic Markers
Estimates the history of hybrid populations from diagnostic
markers, with or without a genetic map: the average age of the hybrids,
how long ago the rarer species' ancestry entered, the number of
backcrosses, and whether pure animals of the rarer species are still
arriving. Population samples of
hybrid index and interspecies heterozygosity, as defined by Fitzpatrick
(2012) <doi:10.1186/1471-2148-12-131>, are compared with forward simulations
that include drift, small breeding groups, sibling mating and separate
breeding pools, so that inbreeding is not mistaken for age. Estimates
come from 'Cubist' models with split-conformal intervals. Recent hybrids
are also classified individually, and the number of markers needed to
detect backcrossed hybrids follows Boecklen and Howard (1997)
<doi:10.1890/0012-9658(1997)078[2611:GAOHZN]2.0.CO;2>.
| Version: |
0.1.1 |
| Depends: |
R (≥ 4.1) |
| Imports: |
Cubist, graphics, grDevices, parallel, ranger, stats |
| Suggests: |
knitr, rmarkdown, testthat (≥ 3.0.0) |
| Published: |
2026-10-22 |
| DOI: |
10.32614/CRAN.package.hybridclock (may not be active yet) |
| Author: |
Paul A. Maier 
[aut, cre, cph] |
| Maintainer: |
Paul A. Maier <maierpa at gmail.com> |
| BugReports: |
https://github.com/paulmaier/hybridclock/issues |
| License: |
MIT + file LICENSE |
| Copyright: |
see file COPYRIGHTS |
| URL: |
https://github.com/paulmaier/hybridclock,
https://paulmaier.github.io/hybridclock/ |
| NeedsCompilation: |
no |
| Citation: |
hybridclock citation info |
| Materials: |
README, NEWS |
| CRAN checks: |
hybridclock results |
Documentation:
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