Genetic drift does not sufficiently explain patterns of electric signal variation among populations of the mormyrid electric fish Paramormyrops kingsleyaeJason Gallant, Sophie Picq, Joshua H Sperling, Catherine Cheng & Bruce Carlson
Communication signals serve crucial survival and reproductive functions. In Gabon, the widely distributed mormyrid fish Paramormyrops kingsleyae emits an electric organ discharge (EOD) signal with a dual role in communication and electrolocation that exhibits remarkable variation: populations of P. kingsleyae have either biphasic or triphasic EODs, a feature which characterizes interspecific signal diversity among the Paramormyrops genus. We quantified variation in EODs of 327 P. kingsleyae from 9 populations and compared it to genetic variation...
Phylogeographic and phenotypic outcomes of brown anole colonization across the Caribbean provide insight into the beginning stages of an adaptive radiationJason J. Kolbe, Richard E. Glor, Marta López‐Darias, C. Verónica Gómez Pourroy, Alexis S. Harrison, Kevin De Queiroz, Liam J. Revell, Jonathan B. Losos & Robert Graham Reynolds
Some of the most important insights into the ecological and evolutionary processes of diversification and speciation have come from studies of island adaptive radiations, yet relatively little research has examined how these radiations initiate. We suggest that Anolis sagrei is a candidate for understanding the origins of the Caribbean Anolis adaptive radiation and how a colonizing anole species begins to undergo allopatric diversification, phenotypic divergence and, potentially, speciation. We undertook a genomic and morphological analysis...
A new method to reconstruct quantitative food webs and nutrient flows from isotope tracer addition experimentsAndres Lopez-Sepulcre, Matthieu Bruneaux, Sarah Michelle Collins, Rana El-Sabaawi, Alexander S Flecker & Steven A Thomas
Understanding how nutrients flow through food webs is central in ecosystem ecology. Tracer addition experiments are powerful tools to reconstruct nutrient flows by adding an isotopically enriched element into an ecosystem, and tracking its fate through time. Historically, the design and analysis of tracer studies have varied widely, ranging from descriptive studies to modeling approaches of varying complexity. Increasingly, isotope tracer data is being used being used to compare ecosystems and analyze experimental manipulations. Currently,...
Untangling the importance of niche breadth and niche position as drivers of tree species abundance and occupancy across biogeographic regionsDilys M. Vela Díaz, Cecilia Blundo, Leslie Cayola, Alfredo F. Fuentes, Lucio R. Malizia & Jonathan A. Myers
Aim: Ecological niches shape species commonness and rarity, yet the relative importance of different niche mechanisms within and across ecosystems remains unresolved. We tested the influence of niche breadth (range of environmental conditions where species occur) and niche position (marginality of a species’ environmental distribution relative to the mean environmental conditions of a region) on tree-species abundance and occupancy across three biogeographic regions. Location: Argentinian Andes; Bolivian Amazon; Missouri Ozarks. Time period: 2002–2010. Major taxa...
Data From: TERRA-REF, An open reference data set from high resolution genomics, phenomics, and imaging sensorsDavid LeBauer, Burnette Maxwell, Jeffrey Demieville, Noah Fahlgren, Andrew French, Roman Garnett, Zhenbin Hu, Kimberly Huynh, Rob Kooper, Zongyang Li, Maitiniyazi Maimaitijiang, Jerome Mao, Todd Mockler, Geoffrey Morris, Maria Newcomb, Michael Ottman, Philip Ozersky, Sidike Paheding, Duke Pauli, Robert Pless, Wei Qin, Kristina Riemer, Gareth Rohde, William Rooney, Vasit Sagan … & Charles Zender
The ARPA-E funded TERRA-REF project is generating open-access reference datasets for the study of plant sensing, genomics, and phenomics. Sensor data were generated by a field scanner sensing platform that captures color, thermal, hyperspectral, and active flourescence imagery as well as three dimensional structure and associated environmental measurements. This dataset is provided alongside data collected using traditional field methods in order to support calibration and validation of algorithms used to extract plot level phenotypes from...
Seashore paspalum (Paspalum vaginatum Swartz) is a halophytic turfgrass and emerging genomic model system for the study of salt tolerance in cereals and other grasses. Despite recent interest and an increase in available tools, little is known about the diversity present in wild populations of P. vaginatum and its close relative P. distichum. Variation in ploidy, clonal propagation, hybridization, and subgenome composition appear to occur in the wild and may interact to influence geographic patterns...
Filtered SNP calls in .ped format from "Hybridization, polyploidy and clonality influence geographic patterns of diversity and salt tolerance in the model halophyte seashore paspalum (Paspalum vaginatum)". We used GBS to genotype 218 P. vaginatum and P. distichum accessions collected from the US Gulf and Atlantic coasts plus available USDA germplasm. We confirm that P. vaginatum and P. distichum are genetically distinct and that the coarse-textured ecotype of P. vaginatum is composed of hybrids between...
Washington University in St. Louis33
University of North Carolina2
National University of Jujuy2
Washington University in St. Louis School of Medicine2
University of Massachusetts Boston2
Donald Danforth Plant Science Center1