Data from: Precipitation mediates the effect of human disturbance on the Brazilian Caatinga vegetationKátia F. Rito, Víctor Arroyo-Rodríguez, Rubens T. De Queiroz, Inara R. Leal & Marcelo Tabarelli
Seasonally dry tropical forests (SDTFs) are one of the most threatened forests worldwide. These species-rich forests not only cope with several acute (e.g. forest loss) and chronic (e.g. overgrazing and firewood extraction) human disturbances, but also with climate change (e.g. longer and more severe droughts); yet, the isolated and combined effects of climate and acute and chronic human disturbances on SDTF vegetation are poorly known. Given the environmental filter imposed by drought in SDTFs, the...
Data from: Independent origins of resistance or susceptibility of parasitic wasps to a defensive symbiontMariana Mateos, Lauryn Winter, Caitlyn Winter, Victor M. Higareda-Alvear, Esperanza Martinez-Romero & Jialei Xie
Insect microbe associations are diverse, widespread, and influential. Among the fitness effects of microbes on their hosts, defense against natural enemies is increasingly recognized as ubiquitous, particularly among those associations involving heritable, yet facultative, bacteria. Protective mutualisms generate complex ecological and co-evolutionary dynamics that are only beginning to be elucidated. These depend in part on the degree to which symbiont-mediated protection exhibits specificity to one or more members of the natural enemy community. Recent findings...
Data from: Oxidative stress during courtship affects male and female reproductive effort differentially in a wild bird with biparental careBibiana Montoya, Mahara Valverde, Emilio Rojas & Roxana Torres
Oxidative stress has been suggested as one of the physiological mechanisms modulating reproductive effort, including investment in mate choice. Here, we evaluated whether oxidative stress influences breeding decisions by acting as a cost of or constraint on reproduction in the brown booby (Sula leucogaster), a long-lived seabird with prolonged biparental care. We found that during courtship, levels of lipid peroxidation (LP) of males and females were positively associated with gular skin color, a trait presumably...
Data from: Genetic and morphological evidence of a geographically widespread hybrid zone between two crocodile species, Crocodylus acutus and Crocodylus moreletiiGualberto Pacheco-Sierra, Zachariah Gompert, Jerónimo Domínguez-Laso & Ella Vázquez-Domínguez
Hybrid zones represent natural laboratories to study gene flow, divergence and the nature of species boundaries between closely related taxa. We evaluated the level and extent of hybridization between Crocodylus moreletii and C. acutus using genetic and morphological data on 300 crocodiles from 65 localities. To our knowledge, this is the first genetic study that includes the entire historic range and sympatric zone of the two species. Contrary to expectations, Bayesian admixture proportions and maximum...
Data from: No evidence that genetic compatibility drives extra-pair behavior in female blue-footed boobiesLynna Marie Kiere, Alejandra G. Ramos & Hugh Drummond
The function of female birds' extra-pair (EP) behavior has remained an unresolved question in ornithology and behavioral ecology for > 30 yr. The genetic compatibility hypothesis (GCH) proposes that females benefit by acquiring biological sires that yield more heterozygous, and therefore fitter, offspring than their social mates. We used ten polymorphic microsatellite loci to test GCH predictions and its assumption that fitness increases with heterozygosity in blue-footed boobies Sula nebouxii, a long-lived tropical seabird. Our...
Data from: The activity of dung beetles increases foliar nutrient concentration in tropical seedlingsCarolina Santos-Heredia, Ellen Andresen, Ek Del-Val, Diego A. Zárate, Maribel Nava Mendoza & Víctor J. Jaramillo
Dung beetles are extensively used as a focal taxon in tropical forests. Yet, information for most of their ecological functions comes from other systems. We present results from a field experiment in a tropical rainforest showing that dung beetle activity increases foliar phosphorus concentration in seedlings of the tree Brosimum lactescens. Our results open new lines of research to assess the multiple effects that dung beetles may have on rainforest plants.
In many primates, including humans, the vocalizations of males and females differ dramatically, with male vocalizations and vocal anatomy often seeming to exaggerate apparent body size. These traits may be favoured by sexual selection because low-frequency male vocalizations intimidate rivals and/or attract females, but this hypothesis has not been systematically tested across primates, nor is it clear why competitors and potential mates should attend to vocalization frequencies. Here we show across anthropoids that sexual dimorphism...
National Autonomous University of Mexico32
University of Georgia2
Universidade Federal de Minas Gerais2
University of Toulouse2
University of Connecticut2
University of Missouri2
Smithsonian Tropical Research Institute2
Donald Danforth Plant Science Center1
Helmholtz Centre for Environmental Research1
University of the Basque Country1