2024-03-28T17:07:03Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1404632019-08-07T08:56:17Zcom_10261_13com_10261_8com_10261_77col_10261_266col_10261_330
DIGITAL.CSIC
author
Gangoso, Laura
author
Lambertucci, Sergio A.
author
Cabezas, Sonia
author
Alarcón, Pablo A.E.
author
Wiemeyer, Guillermo
author
Sánchez-Zapata, José A.
author
Blanco, Guillermo
author
Hiraldo, Fernando
author
Donázar, José A.
2016-11-21T07:28:03Z
2016-11-21T07:28:03Z
2016
Ecosphere, 7(19): e01544 (2016)
http://hdl.handle.net/10261/140463
10.1002/ecs2.1544
Sex-related
divergences in many phenotypic traits, such as morphology, physiology, and behavior,
have widely been described in animals. These asymmetries may adapt the sexes to different subniches,
but also may produce sex-specific
optima for life-history
traits, as well as different costs. In birds,
long movements in search of food and intraspecific competition may entail important metabolic costs that
can be predicted to be unequal if both sexes perform somehow differently. However, the extent to which
sex-specific
individual movements, foraging strategies and social dominance relationships are correlated
with physiological costs has rarely been evaluated. The effects of prolonged exposure to stressors can be
mirrored in accelerated cellular damage and aging as well as in the by-products
resulting from the activation
of the stress response machinery. Both indicators, measured as telomere length and the concentration
of feather corticosterone (CORTf), respectively, would reflect physiological costs at different time frames.
Here, on the basis of information provided by GPS-tagged
Andean condors, a sexually dimorphic scavenger
with a highly despotic social system, we determined whether sex-specific
movement patterns correlated
to variation in telomere length and CORTf levels. We found a striking pattern of spatial structure of
telomere length that was, in addition, sex-specific;
males breeding farther from feeding grounds exhibited
longer telomeres, while the opposite pattern was found in females. Nevertheless, telomere length was not
related to the range of movements performed by condors. We also found that females displayed higher
CORTf values than males, regardless of the location of their nests, which is likely related to social dominance
hierarchy and sexual size dimorphism. Sex-specific
optima for trade-offs
associated with ecological
factors might underlie the fact that populations are spatially structured from a telomere-length
perspective,
which has never been described before
eng
openAccess
Feather corticosterone
Long-lived birds
Movement patterns
Social environment
Telomere lenght
Sex-dependent spatial structure of telomere length in a wild long-lived scavenger
artículo
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URL
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