29 Works

Data from: Tree diversity effects through a temporal lens: implications for the abundance, diversity, and stability of foraging birds

Luis Abdala-Roberts
1. Tree diversity can exert a strong influence on consumers, but most studies have involved short-term assessments. Consequently, we have a limited understanding of temporal variation in the effects of tree diversity on multi-trophic communities and thus how tree diversity impacts ecological function. 2. We conducted a year-long study in an experimental system in southern Mexico assessing the effects of tree diversity on the abundance and diversity of visiting birds. To this end, we recorded...

Data from: Selection of floral traits by pollinators and seed predators during sequential life history stages

Diane 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...

Data from: Conservation genetics of Neotropical pollinators revisited: microsatellite analysis suggests that diploid males are rare in orchid bees

Rogério Souza, Marco Del Lama, Marcelo Cervini, Norma Mortari, Thomas Eltz, Yvonne Zimmermann, Carola Bach, Berry Brosi, Sevan Suni, Javier Quezada & Robert Paxton
Allozyme analyses have suggested that Neotropical orchid bee (Euglossini) pollinators are vulnerable because of putative high frequencies of diploid males, a result of loss of sex allele diversity in small hymenopteran populations with single locus complementary sex determination. Our analysis of 1010 males from 27 species of euglossine bees sampled across the Neotropics at 2-11 polymorphic microsatellite loci revealed only 5 diploid males at an overall frequency of 0.005 (95% CIs 0.002-0.010); errors through genetic...

Integrating floral trait and flowering time distribution patterns help reveal a more dynamic nature of co-flowering community assembly processes

Victor Parra-Tabla, Cristopher Albor-Pinto & Gerardo Arceo-Gómez
Species’ floral traits and flowering times are known to be the major drivers of pollinator-mediated plant-plant interactions in diverse co-flowering communities. However, their simultaneous role in mediating plant community assembly and plant-pollinator interactions is still poorly understood. Since not all species flower at the same time, inference of facilitative and competitive interactions based on floral trait distribution patterns should account for fine phenological structure (intensity of flowering overlap) within co-flowering communities. Such an approach may...

Data from: Post-glacial habitat release and incipient speciation in the genus Delphinus

Iris Segura-García, Juan Pablo Gallo, Susan Chivers, Raúl Díaz-Gamboa & A. Rus Hoelzel
The role of ecological and changing environmental factors in the radiation of species diversity is a fundamental question in evolutionary biology. Of particular interest is the potential for these factors to determine the boundary between what we would consider differentiation among populations and incipient speciation. Dolphins in the genus Delphinus provide a useful test case, exhibiting morphological variation in beak length, coloration and body size across their wide geographic distribution, and in particular among coastal...

Data from: Interactions between plant defence signalling pathways: evidence from bioassays with insect herbivores and plant pathogens

Xoaquin Moreira, Luis Abdala-Roberts & Bastien Castagneyrol
1. Sequential damage by attackers is hypothesized to result in reciprocal antagonism (cross-talk) between jasmonic acid (JA) and salicylic acid (SA) defence signalling pathways in plants. However, evidence for this cross-talk is not universal and several studies have found positive (synergistic) or no interaction whatsoever between JA and SA pathways. 2. Here we conducted a meta-analysis of studies on plant-mediated effects of initial attackers on performance of subsequent attackers to test the hypothesis of cross-talk...

Data from: Deltamethrin resistance in Aedes aegypti results in treatment failure in Merida, Mexico

Gonzalo M. Vazquez-Prokopec, Anuar Medina-Barreiro, Azael Che-Mendoza, Felipe Dzul-Manzanilla, Fabian Correa-Morales, Guillermo Guillermo-May, Wilbert Bibiano-Marin, Valentin Uc-Puc, Eduardo Geded-Moreno, Jose Vadillo-Sanches, Jorge Palacio-Vargas, Scott A. Ritchie, Audrey Lenhart, Pablo Manrique-Saide & José Vadillo-Sánchez
The operational impact of deltamethrin resistance on the efficacy of indoor insecticide applications to control Aedes aegypti was evaluated in Merida, Mexico. A randomized controlled trial quantified the efficacy of indoor residual spraying (IRS) against adult Ae. aegypti in houses treated with either deltamethrin (to which local Ae. aegypti expressed a high degree of resistance) or bendiocarb (to which local Ae. aegypti were fully susceptible) as compared to untreated control houses. All adult Ae. aegypti...

Data from: Are tree species diversity and genotypic diversity effects on insect herbivores mediated by ants?

María José Campos-Navarrete, Luis Abdala-Roberts, Miguel A. Munguía-Rosas & Víctor Parra-Tabla
Plant diversity can influence predators and omnivores and such effects may in turn influence herbivores and plants. However, evidence for these ecological feedbacks is rare. We evaluated if the effects of tree species (SD) and genotypic diversity (GD) on the abundance of different guilds of insect herbivores associated with big-leaf mahogany (Swietenia macrophylla) were contingent upon the protective effects of ants tending extra-floral nectaries of this species. This study was conducted within a larger experiment...

Data from: Sweat bees on hot chillies: provision of pollination services by native bees in traditional slash-and-burn agriculture in the Yucatán Peninsula of tropical Mexico

Patricia Landaverde-González, José Javier G. Quezada-Euán, Panagiotis Theodorou, Tomás E. Murray, Martin Husemann, Ricardo Ayala, Humberto Moo-Valle, Rémy Vandame & Robert J. Paxton
Traditional tropical agriculture often entails a form of slash-and-burn land management that may adversely affect ecosystem services such as pollination, which are required for successful crop yields. The Yucatán Peninsula of Mexico has a >4000 year history of traditional slash-and-burn agriculture, termed ‘milpa’. Hot ‘Habanero’ chilli is a major pollinator-dependent crop that nowadays is often grown in monoculture within the milpa system. We studied 37 local farmers’ chilli fields (sites) to evaluate the effects of...

Data from: Differences in nitrogen cycling between tropical dry forests with contrasting precipitation revealed by stable isotopes of nitrogen in plants and soils

Anaitzi Rivero-Villar, Pamela H. Templer, Víctor Parra-Tabla, Julio Campo. & Julio Campo
Despite the known links between climate and biogeochemical cycling of N in tropical forests, fundamental knowledge of N cycling is still far from complete. Our objective was to ascertain differences in the N cycle of two tropical dry forests under contrasting precipitation regime (1240 or 642 mm of mean annual rainfall). To do so, we examined a short-term metric of N cycling (N concentration) and a more integrated metric of N cycling (natural abundance 15N)...

Data from: Traits underlying community consequences of plant intra-specific diversity

Luis Abdala-Roberts, Riley Pratt, Jessica D. Pratt & Kailen A. Mooney
A plant’s performance and interactions with other trophic levels are recorgnized to be contingent upon plant diversity and underlying associational dynamics, but far less is known about the plant traits driving such phenomena. We manipulated diversity in plant traits using pairs of plant and a substitutive design to elucidate the mechanisms underlying diversity effects operating at a fine spatial scale. Specifically, we measured the effects of diversity in sex (sexual monocultures vs. male and female...

Constitutive and induced phenolics and volatiles in Quercus pyrenaica

Andrea Galmán, Luis Abdala-Roberts, Pola Wartalska, Felisa Covelo, Gregory Röder, Mark A. Szenteczki, Xoaquín Moreira & Sergio Rasmann
With this dataset, we studied elevational gradients and their underlying climatic factors in constitutive and induced phenolics and volatile organic compounds in Oak trees. Oak defences were measured in leaves in a field study. The dataset includes data for 18 populations of Quercus pyrenaica spanning a 1300 m elevational gradient (from 370 to 1614 m) with their correspondence coordinates. In each population we sampled six saplings that were randomly assigned to one of two treatments:...

The SONOZOTZ project: assembling an echolocation calls library for bats in a megadiverse country

MARIA MAC SWINEY, JORGE ORTEGA, RAFAEL AVILA-FLORES, PEDRO ADRIÁN AGUILAR-RODRÍGUEZ, VERONICA ZAMORA-GUTIERREZ, Luis Gerardo Avila-Torresagatón, JORGE AYALA-BERDON, BEATRIZ BOLIVAR-CIME, MIGUEL BRIONES-SALAS, PEDRO ADRIÁN AGUILAR-RODRIGUEZ, MARTIN ALARCON-MONTANO, LUIS GERARDO AVILA-TORRESAGATON, MARTHA CHAN-NOH, MANUEL CHAVEZ-CAUICH, CUAUHTEMOC CHAVEZ, PATRICIA CORTES-CALVA, JUAN CRUZADO, JESUS CARLO CUEVAS, MELINA DEL REAL-MONROY, CYNTHIA ELIZALDE-ARELLANO, MARGARITA GARCIA-LUIS, RODRIGO GARCIA-MORALES, JOSE ANTONIO GUERRERO, ALDO A. GUEVARA-CARRIZALES, LUIS ARTURO HERNANDEZ-MIJANGOS … & ALBA Z. RODAS-MARTINEZ
Bat acoustic libraries are important tools that assemble echolocation calls to allow the comparison and discrimination to confirm species identifications. The Sonozotz project represents the first nation-wide library of bat echolocation calls for a megadiverse country. It was assembled following a standardized recording protocol that aimed to cover different recording habitats, recording techniques, and call variation inherent to individuals. The Sonozotz project included 69 species of echolocating bats, a high species richness that represents 50%...

Data from: Urbanization affects oak–pathogen interactions across spatial scales

Laura 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,...

Data from: Genetic determinants for gestational diabetes mellitus and related metabolic traits in Mexican women

Alicia Huerta-Chagoya, Paola Vázquez-Cárdenas, Hortensia Moreno-Macías, Leonardo Tapia-Maruri, Rosario Rodríguez-Guillén, Erika López-Vite, Guadalupe García-Escalante, Fernando Escobedo-Aguirre, Adalberto Parra-Covarrubias, Roberto Cordero-Brieño, Lizette Manzo-Carrillo, Rogelio Zacarías-Castillo, Carlos Vargas-García, Carlos Aguilar-Salinas & Teresa Tusié-Luna
Epidemiological and physiological similarities among Gestational Diabetes Mellitus (GDM) and Type 2 Diabetes (T2D) suggest that both diseases, share a common genetic background. T2D risk variants have been associated to GDM susceptibility. However, the genetic architecture of GDM is not yet completely understood. We analyzed 176 SNPs for 115 loci previously associated to T2D, GDM and body mass index (BMI), as well as a set of 118 Ancestry Informative Markers (AIMs), in 750 pregnant Mexican...

Data from: Tree species diversity alters plant defence investment in an experimental forest plantation in Southern Mexico

Silvia Rosado-Sánchez, Víctor Parra-Tabla, David Betancur-Ancona, Xoaquín Moreira & Luis Abdala-Roberts
The effects of plant species diversity on plant traits conferring herbivore resistance (e.g., chemical defences), as well as the mechanisms underlying such effects, have received little attention. One potential mechanism for diversity effects on plant defences is that increased plant growth at high diversity could lead to reduced investment in defences via growth-defence trade-offs. We measured tree growth (diameter at breast height) and collected leaves for quantification of total phenolics on 2.5-year old plants of...

Data from: Restoration of pyrethroid susceptibility in a highly resistant Aedes aegypti population

Marissa K. Grossman, Valentin Uc-Puc, Julian Rodriguez, David J. Culter, Levi T. Morran, Pablo Manrique-Saide, Gonzalo M. Vazquez-Prokopec & David J. Cutler
Insecticide resistance has evolved in disease vectors worldwide, creating the urgent need to either develop new control methods or restore insecticide susceptibility to regain the use of existing tools. Here we show that phenotypic susceptibility can be restored in a highly resistant field-derived strain of Aedes aegypti in only ten generations through rearing them in the absence of insecticide.

Data from: Test of biotic and abiotic correlates of latitudinal variation in defences in the perennial herb Ruellia nudiflora

Luis Abdala-Roberts, Xoaquín Moreira, Sergio Rasmann, Victor Parra-Tabla & Kailen A. Mooney
1. Geographic variation in abiotic factors and species interactions is widespread and is hypothesized to generate concomitant patterns of species trait variation. For example, higher rates of herbivory at lower latitudes are thought to select for increased plant defences, although latitudinal variation in defences may also be influenced directly by abiotic factors and indirectly by predators and parasitoids reducing herbivore pressure. 2. We measured defences of the herb Ruellia nudiflora among 30 populations spanning a...

Data from: Effects of arbuscular mycorrhizal fungi on aboveground tri-trophic interactions are contingent upon plant genetic effects of cross type in the perennial herb Ruellia nudiflora

Blanca Mejía-Alva, José Ramos-Zapata, Luis Abdala-Roberts & Víctor Parra-Tabla
1.- Recent work has improved our understanding of the linkages between above- and below-ground interactions mediated by plants. However, relatively few of the studies conducted thus far have focused on muli-trophic interactions (i.e. beyond two trophic levels) and the influence of plant genetic intra-specific variation on these dynamics has rarely been addressed. 2.- We tested the effect of arbuscular mycorrhizal fungi (AMF) on above-ground tri-trophic interactions associated with the canopy of the perennial herb Ruellia...

Data from: Latitudinal variation in plant chemical defences drives latitudinal patterns of leaf herbivory

Xoaquón Moreira, Bastien Castagneyrol, Luis Abdala-Roberts, Jorge C. Berny-Mier Y Terán, Bart G. H. Timmermans, Hans Henrik Kehlet Bruun, Felisa Covelo, Gaétan Glauser, Sergio Rasmann, Ayco J. M. Tack & Hans Henrik Bruun
A long-standing paradigm in ecology holds that herbivore pressure and thus plant defences increase towards lower latitudes. However, recent work has challenged this prediction where studies have found no relationship or opposite trends where herbivory or plant defences increase at higher latitudes. Here we tested for latitudinal variation in herbivory, chemical defences (phenolic compounds), and nutritional traits (phosphorus and nitrogen) in leaves of a long-lived tree species, the English oak Quercus robur. We further investigated...

Data from: The ecology and evolution of seed predation by Darwin's finches on Tribulus cistoides on the Galápagos Islands

Sofía Carvajal-Endara, Andrew P. Hendry, Nancy C. Emery, Corey P. Neu, Diego Carmona, Kiyoko M. Gotanda, T. Jonathan Davies, Jaime A. Chaves & Marc T. J Johnson
Predator-prey interactions play a key role in the evolution of species traits through antagonistic coevolutionary arms-races. The evolution of beak morphology in the Darwin’s finches in response to competition for seed resources is a classic example of evolution by natural selection. The seeds of Tribulus cistoides are an important food source for the largest ground finch species (Geospiza fortis, G. magnirostris, and G. conirostris) in dry months, and the hard spiny morphology of the fruits...

Data from: Larval density mediates knockdown resistance to pyrethroid insecticides in adult Aedes aegypti

Marissa K. Grossman, Valentin Uc-Puc, Adriana E. Flores, Pablo C. Manrique-Saide & Gonzalo M. Vazquez-Prokopec
Background: Understanding mechanisms driving insecticide resistance in vector populations remains a public health priority. To date, most research has focused on the genetic mechanisms underpinning resistance, yet it is unclear what role environmental drivers may play in shaping phenotypic expression. One of the key environmental drivers of Aedes aegypti mosquito population dynamics is resource-driven intraspecific competition at the larval stage. We experimentally investigated the role of density-dependent larval competition in mediating resistance evolution in Ae....

Data from: Tropical tree diversity mediates foraging and predatory effects of insectivorous birds

Colleen S. Nell, Luis Abdala-Roberts, Victor Parra-Tabla & Kailen A. Mooney
Biodiversity affects the structure of ecological communities, but little is known about the interactive effects of diversity across multiple trophic levels. We used a large-scale forest diversity experiment to investigate the effects of tropical tree species richness on insectivorous birds, and the subsequent indirect effect to predation rates by birds. Diverse plots (4 tree species) had higher bird abundance (61%), phylogenetic diversity (61%), and functional diversity (55%) than predicted based on single-species monocultures, which corresponded...

Data from: Transcriptomic analysis of skin pigmentation variation in the Virginia opossum (Didelphis virginiana).

Sergio F. Nigenda-Morales, Yibo Hu, James Beasley, Hugo A. Ruiz-Piña, David Valenzuela-Galván, Robert K. Wayne & James C. Beasley
Skin and coat pigmentation are two of the best-studied examples of traits under natural selection given their quantifiable fitness interactions with the environment (e.g. camouflage) and signaling with other organisms (e.g. warning coloration). Previous morphological studies have found that skin pigmentation variation in the Virginia opossum (Didelphis virginiana) is associated with variation in precipitation and temperatures across its distribution range following Gloger’s rule (lighter pigmentation in temperate environments). To investigate the molecular mechanism associated with...

Data from: Extending null scenarios with Faddy distributions in a probabilistic randomization protocol for presence-absence data

Jorge Navarro Alberto, Bryan Manly & Kenneth Gerow
1. The analysis of species occurrences at discrete locations makes use of statistical methods intended to elucidate whether a random process can explain a particular observed pattern of presences-absences (1-0). Various statistical methods have contributed to the development of null model analysis of (1-0) data in community ecology using randomization tests. Frequentist techniques assuming probability distributions under the null scenarios have been proposed, as in the work by Navarro and Manly (2009) (NM), a protocol...

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