Détail de l'auteur
Documents disponibles écrits par cet auteur (13)
Ajouter le résultat dans votre panier Affiner la recherche
Article
Yanina Poblete, Auteur ; Victor Gutierrez, Auteur ; Paulina L. Gonzalez-Gomez, Auteur ; John C. Wingfield, Auteur ; Rodrigo A. Vásquez, AuteurTo facilitate breeding and any energetically costly activity, individuals of the same species can substantially vary their circulating corticosterone (CORT) levels to cope with local environmental conditions at different elevations. We compared [...]
Article
Simeon Lisovski, Auteur ; Zoltán Németh, Auteur ; John C. Wingfield, Auteur ; Jesse S. Krause, Auteur ; Keith A. Hobson, Auteur ; Nathaniel E. Seavy, Auteur ; Jennifer Gee, Auteur ; Marilyn Ramenofsky, AuteurWhite-crowned Sparrow (Zonotrichia leucophrys) populations of western North America exhibit dramatic differences in life history strategies including migration behavior. However, individual migration strategies and population-level migratory pat[...]
Article
Aaron D. Clark, Auteur ; Elizabeth A. Addis, Auteur ; Rodrigo A. Vásquez, Auteur ; John C. Wingfield, AuteurTo persist in a landscape, organisms are often faced with evolutionary tradeoffs between individual survival and reproduction. In environments where breeding opportunities are brief, it has been hypothesized that individuals will decrease invest[...]
Article
Noah T. Owen-Ashley, Auteur ; John C. Wingfield, AuteurThe acute phase response (APR) is the first line of defense that many vertebrates employ during a pathogenic challenge. This response is composed of a suite of physiological, behavioral, hormonal, and metabolic changes that include fever, iron s[...]
Article
Paulina L. Gonzalez-Gomez, Auteur ; William S. Blakeslee, Auteur ; Pablo Razeto-Barry, Auteur ; Rachel M. Borthwell, Auteur ; Sara M. Hiebert, Auteur ; John C. Wingfield, AuteurHummingbirds present a unique combination between extremely high life costs and a number of efficient adaptations to fuel these demands. In addition to cognitive abilities, territorial hummingbirds display aggressive behaviors that allow for acc[...]
Article
John C. Wingfield, AuteurMale song sparrows (Melospiza melodia) are territorial year-round. However, neuroendocrine responses to simulated territorial intrusions (STI) differ between breeding (spring) and non-breeding seasons (autumn). In spring, exposure to STI leads t[...]
Article
Dongming Li, Auteur ; Gang Wang, Auteur ; John C. Wingfield, Auteur ; Fumin Lei, AuteurIn many avian species, it has been well demonstrated that individuals attempting to breed in harsh or unpredictable environments always express reduced adrenocortical responses to acute stress, whereas those breeding in more benign or predictabl[...]
Article
Kazuyoshi Tsutsui, Auteur ; Takayoshi Ubuka, Auteur ; Hong Yin, Auteur ; Tomohiro Osugi, Auteur ; Kazuyoshi Ukena, Auteur ; George E. Bentley, Auteur ; Peter J. Sharp, Auteur ; John C. Wingfield, AuteurNeuropeptide control of gonadotropin secretion at the level of the anterior pituitary gland is primarily through the stimulatory action of the hypothalamic decapeptide gonadotropin-releasing hormone (GnRH) in vertebrates. Until recently, no neur[...]
Article
John C. Wingfield, Auteur ; Simone L. Meddle, Auteur ; Ignacio Moore, Auteur ; Shallin Busch, Auteur ; Douglas Wacker, Auteur ; Sharon Lynn, Auteur ; Aaron Clark, Auteur ; Rodrigo A. Vásquez, Auteur ; Elizabeth Addis, AuteurNorthern populations of the White-crowned Sparrow, Zonotrichia leucophrys, show varying degrees of social modulation of testosterone. In general, males of mid-latitude breeding and multiple-brooded populations show transient increases in secreti[...]
Article
George E. Bentley, Auteur ; Nicole Perfito, Auteur ; Takayoshi Ubuka, Auteur ; Kazuyoshi Ukena, Auteur ; Tomohiro Osugi, Auteur ; Sara O'Brien, Auteur ; Kazuyoshi Tsutsui, Auteur ; John C. Wingfield, AuteurThe discovery of gonadotropin-inhibitory hormone ( GnIH) in Japanese Quail Coturnix japonica has given us a new perspective on the neuroendocrine control of reproductive physiology and behavior. Using highly photoperiodic passerine songbirds as [...]
Article
Douglas W. Wacker, Auteur ; Alexander J. Coverdill, Auteur ; Carolyn M. Bauer, Auteur ; John C. Wingfield, AuteurThe Fox Sparrows, Passerella iliaca, include multiple groups and subspecies distributed at several latitudes from the Alaskan arctic to the southwestern United States. As such, this species represents a potential model for investigating latitudi[...]
Article
John C. Wingfield, Auteur ; J. Patrick Kelley, Auteur ; Frédéric Angelier, Auteur ; Olivier Chastel, Auteur ; Fumin Lei, Auteur ; Sharon E. Lynn, Auteur ; Brooks Miner, Auteur ; Jason E. Davis, Auteur ; Dongming Li, Auteur ; Gang Wang, AuteurUnderstanding the interactions of an organism and its environment is essential for us to integrate ultimate and proximate causation on a global scale. Organism-environment interaction includes all organisms including animals, plants, and non-euk[...]
Article
Lisa S. Hayward, Auteur ; Erica E. M. Moodie, Auteur ; John C. Wingfield, AuteurThe levels of maternal androgens in egg yolk vary considerably within and among clutches. In most species studied to date, high levels have been found to increase offspring competitive ability. We measured yolk testosterone in two populations of[...]
