Food supplementation by an invasive fleshy-fruited shrub sustains body condition of a native frugivorous bird during winter

作     者：Tobias Nicolas ROJAS David Lautaro VERGARA-TABARES Diego Javier VALDEZ Marina Flavia PONZIO Susana Inés PELUC 

作者机构：Institute of Diversity and Animal Eology(IDEA-CONICET)National University of CórdobaCórdobaArgentina Institute of Health Science Research(INICSA-CONICET)Faculty of Medical SciencesNational University of CórdobaCórdobaArgentina Faculty of ExactsPhysics and Nature SciencesNational University of CórdobaCórdobaArgentina Instituto de Ecología Regional(IER-CONICET)National University of TucumánTucumánArgentina. 

出 版 物：《Integrative Zoology》 (整合动物学（英文版）)

年 卷 期：2019年第14卷第3期

页      面：259-269页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 0905[农学-畜牧学] 0906[农学-兽医学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：the“Secretaría de Ambiente de la Provincia de Córdoba”(authorization number:430625-053-913) the institution responsible for the regula­tion and control of the use of wild animals in scientific activities Ruf­ford Foundation under a Rufford Small Grants(Num­ber 13090-1 to DLVT) the Association of Field Or­nithologists under a Bergstrom Award to DLVT 

主　　题：biological invasion energetic reserves food fluctuation frugivory plasma corticosterone 

摘      要：Birds tend to adjust their behavior and physiology to changes in food availability in their ***­al fluctuation of food resources may act as an energetic challenge,augmenting hypothalamus-pituitary-adre­nal axis(HPA axis)activity,leading to an increase in corticosterone concentrations and promoting the metab­olism of energy *** invasions may alter seasonal food fluctuations by providing a food supply during scarce *** could attenuate the energetic challenge,reducing HPA axis activity and the metabolism of *** a system with seasonal fluctuation in food availability,we tested if fruit supplementation by the invasive fleshy-fruited Pyracantha angustifolia during the season of native fruit scarcity decreases the con­sumption of energy stores through activity attenuation of the HPA *** measured changes in body condition and circulating corticosterone(CORT)concentration in Turdus chiguanco occurring at sites both invaded and not invaded by *** over 3 time periods that correspond to the periods prior to,during and after high­est fruit production of the *** scarcity in the ecosystem appears as an energetic challenge for ***­co,given that body mass,fat score and residuals of body mass/tarsus length decreased during winter in a site not invaded by the exotic ***,the presence of the invasive plant seemed to attenuate the metab­olism of energetic reserves,as we did not record changes in body condition in birds inhabiting the invaded ***,plasma CORT concentration did not vary between sites or *** evaluation is required to elucidate how enhanced body condition,resulting from the consumption of a fleshy-fruited invasive plant,af­fects survivorship and reproductive performance in ***.