Survival of adult Steller sea lions in Alaska: senescence, annual variation and covariation with male reproductive success

Hastings, Kelly K.; Jemison, Lauri A.; Pendleton, Grey W.

doi:10.1098/rsos.170665

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Survival of adult Steller sea lions in Alaska: senescence, annual variation and covariation with male reproductive success

2018
By Hastings, Kelly K. ; Jemison, Lauri A. ; Pendleton, Grey W.
Source: Royal Society Open Science, 4(12), 1-20

[PDF-679.63 KB]

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Details:

Journal Title:

Royal Society Open Science
Personal Author:

Hastings, Kelly K. ; Jemison, Lauri A. ; Pendleton, Grey W.

Hastings, Kelly K. ; Jemison, Lauri A. ; Pendleton, Grey W. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service)
Description:

Population dynamics of long-lived vertebrates depend critically on adult survival, yet factors affecting survival and covariation between survival and other vital rates in adults remain poorly examined for many taxonomic groups of long-lived mammals (e.g. actuarial senescence has been examined for only 9 of 34 extant pinniped species using longitudinal data). We used mark–recapture models and data from 2795 Steller sea lion (Eumetopias jubatus) pups individually marked at four of five rookeries in southeastern Alaska (SEAK) and resighted for 21 years to examine senescence, annual variability and covariation among life-history traits in this long-lived, sexually dimorphic pinniped. Sexes differed in age of onset (approx. 16–17 and approx. 8–9 years for females and males, respectively), but not rate (−0.047 and −0.046/year of age for females and males) of senescence. Survival of adult males from northern SEAK had greatest annual variability (approx. ±0.30 among years), whereas survival of adult females ranged approximately ±0.10 annually. Positive covariation between male survival and reproductive success was observed. Survival of territorial males was 0.20 higher than that of non-territorial males, resulting in the majority of males alive at oldest ages being territorial.
Keywords:

[+]

Aging Mathematical Models Steller's Sea Lion
Source:

Royal Society Open Science, 4(12), 1-20
DOI:

https://doi.org/10.1098/rsos.170665
Pubmed ID:

29410794
Document Type:

Journal Article
Funding:

Grant no. NA17FX1079 ; Grant no. NA04NMF4390170 ; Grant no. NA08NMF4390544 ; Grant no. NA11NMF4390200 ; Grant no. NA15NMF4390170

Grant no. NA17FX1079 ; Grant no. NA04NMF4390170 ; Grant no. NA08NMF4390544 ; Grant no. NA11NMF4390200 ; Grant no. NA15NMF4390170 Less -
Place as Subject:

Alaska, Southeast ; United States

Alaska, Southeast ; United States Less -
Rights Information:

CC BY
Compliance:

PMC
Main Document Checksum:

[+]

urn:sha256:a527bf7aac0dd38f57156b3dc6f8e7d7a66ff4b8ca244a0975b55bc64455388a
Download URL:

https://repository.library.noaa.gov/view/noaa/24660/noaa_24660_DS1.pdf
File Type:

	Footnotes	htm
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