Data from: A stable phylogenomic classification of Travunioidea (Arachnida, Opiliones, Laniatores) based on sequence capture of ultraconserved elementsShahan Derkarabetian, James Starrett, Nobuo Tsurusaki, Darrell Ubick, Stephanie Castillo & Marshal Hedin
Molecular phylogenetics has transitioned into the phylogenomic era, with data derived from next-generation sequencing technologies allowing unprecedented phylogenetic resolution in all animal groups, including understudied invertebrate taxa. Within the most diverse harvestmen suborder, Laniatores, most relationships at all taxonomic levels have yet to be explored from a phylogenomics perspective. Travunioidea is an early-diverging lineage of laniatorean harvestmen with a Laurasian distribution, with species distributed in eastern Asia, eastern and western North America, and south-central Europe....
Data from: Before platelets: the production of platelet activating factor during growth and stress in a basal marine organismInes Galtier D’Auriac, Robert A. Quinn, Heather Maughan, Louis-Felix Nothias, Mark Little, Clifford A. Kapono, Ana Cobian Guemes, Brandon T. Reyes, Kevin Green, Steven D. Quistad, Matthieu Leray, Jennifer E. Smith, Pieter C. Dorrestein, Forest Rohwer, Dimitri D. Deheyn, Aaron C. Hartmann, Ana Cobian & Ines Galtier D'Auriac
Corals and humans represent two extremely disparate metazoan lineages and are therefore useful for comparative evolutionary studies. Two lipid-based molecules that are central to human immunity, platelet activating factor (PAF) and Lyso-PAF were recently identified in scleractinian corals. To identify processes in corals that involve these molecules, PAF and Lyso-PAF biosynthesis was quantified in conditions known to stimulate PAF production in mammals (tissue growth and exposure to elevated levels of ultraviolet light) and in conditions...
1.Most naturalized and invasive alien plant species were originally introduced to regions for horticultural purposes. However, many regions now face an invasion debt from ornamental alien species, which have not yet naturalized. In this regard, climate change represents a threat as it may lower the barriers to naturalization for some ornamental alien species. Identifying those species is extremely important for anticipating impending invasions. 2.To identify predictors of naturalization, we modelled the effects of climate, nursery...
Data from: Experiments reveal limited top-down control of key herbivores in southern California kelp forestsRobert P. Dunn & Kevin A. Hovel
Predator responses to gradients in prey density have important implications for population regulation and are a potential structuring force for subtidal marine communities, particularly on rocky reefs where herbivorous sea urchins can drive community state shifts. On rocky reefs in southern California where predatory sea otters have been extirpated, top-down control of sea urchins by alternative predators has been hypothesized but rarely tested experimentally. In laboratory feeding assays, predatory spiny lobsters (Panulirus interruptus) demonstrated a...
Data from: Sequence capture phylogenomics of eyeless Cicurina spiders from Texas caves, with emphasis on US federally-endangered species from Bexar County (Araneae, Hahniidae)Marshal Hedin, Shahan Derkarabetian, Jennifer Blair & Pierre Paquin
We combined morphological, mitochondrial, and nuclear phylogenomic data to address phylogenetic and species delimitation questions in cave-limited Cicurina spiders from central Texas. We focused special effort on specimens and cave locations in the San Antonio region (Bexar County), home to four eyeless species listed as US Federally Endangered. Our sequence capture experiments resulted in the recovery of ~ 200-400 homologous ultra-conserved element (UCE) nuclear loci across taxa, and nearly complete COI mitochondrial DNA sequences from...
Data from: Introduced garden plants are strong competitors of native and alien residents under simulated climate changeEmily Haeuser, Wayne Dawson & Mark Van Kleunen
1) Most invasive plants have been originally introduced for horticultural purposes. Still, most alien garden plants have not naturalized yet, probably due in part to inadequate climatic conditions. Climate change may alter this, but few experimental studies have addressed this for non-naturalized alien garden plants, and those that have, addressed only singular aspects of climate change. 2) In a greenhouse experiment, we examined the performance of nine non-naturalized alien herbaceous garden plants of varying climatic...
Data from: Nuptial gift chemistry reveals convergent evolution correlated with antagonism in mating systems of harvestmen (Arachnida, Opiliones)Penelope C. Kahn, Dennis D. Cao, Mercedes Burns & Sarah L. Boyer
Nuptial gifts are material donations given from male to female before or during copulation, and are subject to sexual selection in a wide variety of taxa. The harvestman genus Leiobunum has emerged as a model system for understanding the evolution of reproductive morphology and behavior, as transitions between solicitous and antagonistic modes of courtship have occurred multiple times within the lineage and are correlated with convergence in genital morphology. We analyzed the free amino acid...
Data from: The role of hybridization during ecological divergence of southwestern white pine (Pinus strobiformis) and limber pine (P. flexilis)Mitra Menon, Justin C. Bagley, Christopher J. Friedline, Amy V. Whipple, Anna W. Schoettle, Alejandro Lael-Saenz, Christian Wehenkel, Francisco Molina-Freaner, Lluvia Flores-Renteria, M. Socorro Gonzalez-Elizondo, Richard A. Sniezko, Samuel A. Cushman, Kristen M. Waring & Andrew J. Eckert
Interactions between extrinsic factors, such as disruptive selection, and intrinsic factors, such as genetic incompatibilities among loci, often contribute towards the maintenance of species boundaries. The relative roles of these factors in the establishment of reproductive isolation can be examined using species pairs characterized by gene flow throughout their divergence history. We investigated the process of speciation and the maintenance of species boundaries between Pinus strobiformis and P. flexilis. Utilizing ecological niche modeling, demographic modeling,...
Data from: Potential limitations of behavioral plasticity and the role of egg relocation in climate change mitigation for a thermally-sensitive endangered speciesMichael J. Liles, Tarla Rai Peterson, Jeffrey A. Seminoff, Alexander R. Gaos, Eduardo Altamirano, Ana V. Henríquez, Velkiss Gadea, Sofía Chavarría, José Urteaga, Bryan P. Wallace & Markus J. Peterson
Anthropogenic climate change is widely considered a major threat to global biodiversity, such that the ability of a species to adapt will determine its likelihood of survival. Egg-burying reptiles that exhibit temperature-dependent sex determination, such as critically endangered hawksbill turtles (Eretmochelys imbricata), are particularly vulnerable to changes in thermal regimes because nest temperatures affect offspring sex, fitness, and survival. It is unclear whether hawksbills possess sufficient behavioral plasticity of nesting traits (i.e., redistribution of nesting...
San Diego State University9
University of Konstanz2
University of California System1
University of California, San Diego1
German Center for Integrative Biodiversity Research1
United States Department of Agriculture1