A meta‐analysis of insularity effects on herbivory and plant defencesXoaquín Moreira, Bastien Castagneyrol, Carlos García‐Verdugo & Luis Abdala‐Roberts
Aim: Plants on islands are often subjected to lower levels of herbivory relative to those at mainland sites. As a consequence, island plants are predicted to exhibit lower levels of physical and chemical defences, which renders them more susceptible to introduced herbivores. Yet, instances of high pressure by superabundant herbivores native to islands have been reported in many insular systems, which presumably would result in heightened plant defences. To date, no quantitative review has been...
Data from: Selection of floral traits by pollinators and seed predators during sequential life history stagesDiane Campbell, Mascha Bischoff, Robert Raguso, Heather Briggs & Paula Sosenski
Organismal traits often influence fitness via interactions with multiple species. That selection is not necessarily predictable from pairwise interactions, such as when interactions occur during different lifecycle stages. Theoretically, directional selection during two sequential episodes, e.g., pollination and seed survival, can generate quadratic or correlational selection for a set of traits that passes both selective filters. We compared strength of selection during pollination versus seed predation in the field and tested whether interactions with multiple...
Beyond leaf habit: generalities in plant function across 97 tropical dry forest tree speciesGerman Vargas G., Tim J. Brodribb, Juan M. Dupuy, Roy González‐M., Catherine M. Hulshof, David Medvigy, Tristan A. P. Allerton, Camila Pizano, Beatriz Salgado‐Negret, Naomi B. Schwartz, Skip J. Van Bloem, Bonnie G. Waring & Jennifer S. Powers
Leaf habit has been hypothesized to define a linkage between the slow-fast plant economic spectrum and the drought resistance-avoidance trade-off in tropical forests (‘slow-safe versus fast-risky’). However, variation in hydraulic traits as a function of leaf habit has rarely been explored for a large number of species. We sampled leaf and branch functional traits of 97 tropical dry forest tree species from four sites to investigate whether patterns of trait variation varied consistently in relation...
Transcriptomic signatures of ageing vary in solitary and social forms of an orchid beeAlice Séguret, Eckart Stolle, Fernando Fleites-Ayil, Javier Quezada-Euán, Klaus Hartfelder, Karen Meusemann, Mark Harrison, Antonella Soro & Robert Paxton
Eusocial insect queens are remarkable in their ability to maximise both fecundity and longevity, thus escaping the typical trade-off between these two traits. Several mechanisms have been proposed to underlie the remoulding of the trade-off, such as reshaping of the juvenile hormone pathway, or caste-specific susceptibility to oxidative stress. However, it remains a challenge to disentangle the molecular mechanisms underlying the remoulding of the trade-off in eusocial insects from caste-specific physiological attributes that have subsequently...
Data from: Urbanization affects oak–pathogen interactions across spatial scalesLaura Van Dijk, Xoaquin Moreira, Anna Barr, Luis Abdala-Roberts, Bastien Castagneyrol, Maria Faticov, Bess Hardwick, Jan Ten Hoopen, Raul De La Mata, Ricardo Matheus Pires, Tomas Roslin, Dmitry Schigel, Bart Timmermans & Ayco Tack
The world is rapidly urbanizing, thereby transforming natural landscapes and changing the abundance and distribution of organisms. However, insights into the effects of urbanization on species interactions, and plant-pathogen interactions in particular, are lacking. We investigated the effects of urbanization on powdery mildew infection on Quercus robur at continental and within-city scales. At the continental scale, we compared infection levels between urban and rural areas of different-sized cities in Europe, and investigated whether plant traits,...
Tragedy of the commons in Melipona bees revisitedRicardo Caliari Oliveira, Viviana Di Pietro, José Javier G. Quezada-Euán, Jorge Ramirez Pech, Humberto Moo-Valle & Tom Wenseleers
Melipona stingless bees display a paradoxical overproduction of queens, which are later eliminated by nestmate workers. Mechanistically, it was suggested that the monoterpenoid geraniol deposited into newly provisioned cells by adult bees would cause larvae to develop into queens in Melipona beecheii. This system could be evolutionarily stable if many of these new queens would leave the nest and parasitize other genetically unrelated colonies nearby, as was shown to occur in a congeneric species. Here,...
Autonomous University of Yucatán6
Misión Biológica de Galicia2
Institute of Forest Ecology1
University of Notre Dame1
Department of Plant Biology1
Zoological Research Museum Alexander Koenig1
Institute for Research and Technology in Food and Agriculture1
University of Minnesota1
Instituto de Botânica1
University of Tasmania1