Trait variation and trait stability in common marmosets (Callithrix jacchus) inhabiting ecologically distinct habitats in northeastern Brazil.

摘要: Understanding the set of factors that promote and constrain a species' ability to exploit ecologically distinct habitats is central for addressing questions intraspecific variability in behavior morphology. In this study, we compared newly collected data with published on body measurements, group size composition, daily path length, home range, reproductive output wild common marmosets naturally inhabiting two contrasting environments northeastern Brazil: Atlantic Forest (AF), which characterized by high biodiversity reduced seasonality food availability Caatinga (CAT), severe hot dry season lasting from 5 11 months, drought-resistant plant species, primary productivity. Despite marked differences ecological conditions, CAT AF differed minimally output, infant survivorship. were found live smaller groups containing fewer adult females than marmosets, also greater surface area mass ratio, trait may represent an adaptation conditions Caatinga. We propose conjunction reduction, minor adjustments behavior, exploitation cacti as source water nutrients, access exudates dependable year-round resource, successfully used same adaptive pattern maintain survivorship exploiting these environments.