Abstract：
:Inbreeding can depress individuals' fitness traits and reduce population viability. However, studies that directly translate inbreeding depression on fitness traits into consequences for population viability, and further, into consequences for management choices, are lacking. Here, we estimated impacts of inbreeding depression (B, lethal equivalents) across life-history stages for an extinct-in-the-wild species, the sihek (Guam kingfisher, Todiramphus cinnamominus). We then projected population growth under different management alternatives with our B estimates incorporated, as well as without inbreeding depression (B = 0) or with a conventional default B. We found that inbreeding depression severely impacted multiple life-history stages, and directly translated into an effect on population viability under management alternatives. Simulations including our B estimates indicated rapid population decline, whereas projections without inbreeding depression or with default B suggested very gradual population decline. Further, our results demonstrate that incorporation of B across life-history stages can influence management decisions, as projections with our B estimates suggested a need to switch to increased breeding management to avoid species extinction and support wild releases. Our results demonstrate that magnitude of B across life-history stages can translate into demographic consequences, such that incorporation of multiple life-stage B into population models can be important for informed conservation management decision-making.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Trask AE,Ferrie GM,Wang J,Newland S,Canessa S,Moehrenschlager A,Laut M,Duenas LB,Ewen JGdoi
10.1038/s41598-020-79979-4subject
Has Abstractpub_date
2021-01-12 00:00:00pages
682issue
1issn
2045-2322pii
10.1038/s41598-020-79979-4journal_volume
11pub_type
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