Listar INVESTIGACIÓN por autor "Ebensperger, Luis A."
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Highly masculinized and younger males attain higher reproductive success in a social rodent
Correa, Loreto A. [Univ Mayor, Fac Ciencias, Escuela Med Vet, Nucleo Interdisciplinario, Camino Piramide 5750, Santiago, Chile]; Leon, Cecilia; Ramírez-Estrada, Juan; Ly-Prieto, Alvaro; Abades, Sebastián; Hayes, Loren D.; Soto-Gamboa, Mauricio; Ebensperger, Luis A. (OXFORD UNIV PRESS INC, 2018)Alternative morphotypes have been reported in males of different taxa. In some mammals, highly masculinized and slightly masculinized males represent 2 opposite ends along a gradient of phenotypic variation in males. This ... -
Male group members are costly to plurally breeding Octodon degus females
Correa, Loreto A. [Univ Mayor, Fac Ciencias, Escuela Med Vet]; Hayes, Loren D.; Abades, Sebastián; Gao, Cuilan L.; Ebensperger, Luis A. (BRILL ACADEMIC PUBLISHERS, 2019)We report the results of a 6-year study of social (number of adult males/females, relatedness of females, communal litter size) and ecological (mean/CV of food abundance, soil hardness, burrow openings) factors influencing ... -
Multiple mating is linked to social setting and benefits the males in a communally rearing mammal
Abades, Sebastián [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Fac Ciencias]; Correa, Loreto A. [Univ Mayor, Escuela Med Vet, Fac Ciencias]; Ebensperger, Luis A.; Ly Prieto, Alvaro; Pérez de Arce, Felipe; Hayes, Loren D. (OXFORD UNIV PRESS INC, 2019)Individuals in social species may mate with multiple opposite-sex individuals, including members of the same or different social groups. This variation may be linked to genetic benefits, where multiple mating decreases ... -
Parental care in male degus (Octodon degus) is flexible and contingent upon female care
Aspillaga-Cid, Antonia; Vera, Daniela C.; Ebensperger, Luis A.; Correa, Loreto A. [Univ Mayor, Fac Ciencias, Escuela Med Vet, Chile] (PERGAMON-ELSEVIER SCIENCE LTD, 2021-09-01)Parents in many animal species provide care to their offspring as a mechanism to enhance their own fitness. In mammals, this behavior is expressed mostly by the females, but also by males of some species. Proximally, rates ... -
Socially unstable conditions experienced during development prime female Octodon degus to shape the phenotype of their own offspring
Ebensperger, Luis A.; Gómez, Celeste; Aspillaga-Cid, Antonia; León, Cecilia; Ramírez-Estrada, Juan; Correa, Loreto A. [Univ Mayor, Fac Ciencias, Escuela Med Vet, Chile]; Vera, Daniela C.; Abades, Sebastián [Univ Mayor, Fac Estudios Interdisciplinarios, GEMA Ctr Genom Ecol & Environm, Chile]; Hayes, Loren D. (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2021-08)Because residents and immigrants from group living species may experience fitness costs associated with permanent changes in group membership, we examined the hypothesis that females experiencing socially unstable or ... -
Socioecological conditions predict degu social instability and provide limited cues to forecast subsequent breeding conditions
Ebensperger, Luis A.; Abades, Sebastián [Univ Mayor, GEMA Ctr Genom Ecol & Environm, Fac Estudios Interdisciplinarios, Chile]; Riquelme, Juan; Correa, Loreto A. [Univ Mayor, Escuela Med Vet, Fac Ciencias, Chile]; Hayes, Loren D. (SPRINGER, 2021-05)Permanent changes in group membership may result in detrimental fitness effects on both group residents and immigrants. Factors associated with this form of social instability are rarely documented. We used a 15-year dataset ... -
Stress, sleep, and sex: A review of endocrinological research in Octodon degus
Correa, Loreto A. [Univ Mayor, Fac Ciencias, Escuela Med Vet, Santiago, Chile]; Bauer, Carolyn M.; Ebensperger, Luis A.; Romero, L. Michael (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2019)The Common Degu (Octodon degus) is a small rodent endemic to central Chile. It has become an important model for comparative vertebrate endocrinology because of several uncommon life-history features - it is diurnal, shows ...