10.5061/DRYAD.541R5
Hastings, Kelly K.
Alaska Department of Fish and Game
Jemison, Lauri
Pendleton, Grey
Jemison, Lauri A.
Alaska Department of Fish and Game
Pendleton, Grey W.
Alaska Department of Fish and Game
Data from: Survival of adult Steller sea lions in Alaska: senescence,
annual variation and covariation with male reproductive success
Dryad
dataset
2018
1994-2015
vital rates
Steller sea lion
marine mammal
Eumetopias jubatus
2018-01-05T22:17:50Z
2018-01-05T22:17:50Z
en
https://doi.org/10.1098/rsos.170665
141010 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
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 2,795 Steller sea lion (Eumetopias
jubatus) pups individually-marked at 4 of 5 rookeries in southeastern
Alaska (SEAK) and resighted for 22 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 (~16–17 and
~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 (~±0.30 among
years), whereas survival of adult females ranged ~±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.
caphist1Text file of capture histories (ch) by year as described in the
manuscript with variables natal rookery (nr - see manuscript) and
sex.caphist2Text file of capture histories (ch) by year for adult males
based on territorial status as described in the manuscript by natal
rookery (nr - see manuscript) and cohort (coh).
southeast Alaska