Search results for "Life-history trade-offs"

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The oxidative cost of reproduction depends on early development oxidative stress and sex in a bird species

2016

In the early 2000s, a new component of the cost of reproduction was proposed: oxidative stress. Since then the oxidative cost of reproduction hypothesis has, however, received mixed support. Different arguments have been provided to explain this. Among them, the lack of a life-history perspective on most experimental tests was suggested. We manipulated the levels of a key intracellular antioxidant (glutathione) in captive zebra finches (Taeniopygia guttata) during a short period of early life and subsequently tested the oxidative cost of reproduction. Birds were allowed to mate freely in an outdoor aviary for several months. We repeatedly enlarged or reduced their broods to increase or redu…

Malepredictive adaptive response0106 biological sciences0301 basic medicineAntioxidantmedicine.medical_treatmentmedia_common.quotation_subjectZoologymedicine.disease_causephenotypic plasticity010603 evolutionary biology01 natural sciencesAntioxidantsGeneral Biochemistry Genetics and Molecular BiologySongbirdsearly development conditions03 medical and health scienceschemistry.chemical_compoundPredictive adaptive responsemedicineAnimals[ SDV.BDD ] Life Sciences [q-bio]/Development Biologyenvironmental matching[SDV.BDD]Life Sciences [q-bio]/Development BiologyResearch ArticlesGeneral Environmental Sciencemedia_commonPhenotypic plasticityGeneral Immunology and MicrobiologybiologyEcologyReproduction[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]life-history trade-offsGeneral MedicineGlutathionebiology.organism_classificationHaemolysisGlutathioneOxidative Stress[ SDV.BID.EVO ] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]030104 developmental biologychemistryFemaleReproductionGeneral Agricultural and Biological SciencesTaeniopygiaOxidative stressProceedings of the Royal Society B: Biological Sciences
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Senescence and longevity : from physiological mechanisms to evolutionary processes : studies in birds and mammals

2012

There is an incredible diversity of lifespan in the animal kingdom ranging from a few days for small gastrotrichs worms to several hundred of years for some bivalves or tortoises. This amazing diversity has long questioned biology researchers. The growing interest in the phenomenon of aging, mainly due to the increase in life expectancy in humans, has questioned researchers on processes that determine patterns of longevity and ageing. On the one hand, biomedical and biogerontological studies helped describe numerous cellular and physiological mechanisms related to aging. Among these mechanisms, oxidative stress has been identified as playing a major role, through life-time accumulation of d…

SourisEcoimmunologyDiamant mandarinMouse[SDV.BA] Life Sciences [q-bio]/Animal biologyLongevityImmunopathologySenescenceVieillissementTraits d’histoire de vieAntioxidantsLife-history trade-offsDarwinian medicineCompromis d’allocationSénescenceInflammationMédecine darwinienneImmunityAntioxydantsLongévitéAgeingStress oxydantOxidative stressImmunopathologieImmunitéZebra finchImmuno-écologie
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