8 Works

Data from: Broad-scale geographic variation in the organization of rocky intertidal communities in the Gulf of Maine

Elizabeth S. Bryson, Patrick J. Ewanchuk & Geoffrey C. Trussell
A major challenge facing ecology is to better understand how large-scale processes modify local scale processes to shape the organization of ecological communities. Although the results of ecological experiments are repeatable on local scales, different results often emerge across broad scales, which can hinder the development of general predictions that apply across the geographical range of a community. Numerous studies in the southern Gulf of Maine have shaped our understanding of community organization and dynamics...

Data from: Phylogenomic analyses reveal latitudinal population structure and polymorphisms in heat stress genes in the North Atlantic snail Nucella lapillus

Nathaniel D. Chu, Stefan T. Kaluziak, Geoffrey C. Trussell & Steven V. Vollmer
North Atlantic rocky intertidal species have been shaped by repeated glaciations and strong latitudinal temperature gradients, making them an excellent system to study postglacial phylogeography and thermal tolerance. Population genetics data from northwestern Atlantic species, however, often show patterns inconsistent with the prediction that high dispersal should generate weaker genetic structure among populations. Here we used next-generation sequencing restriction-associated DNA tags (RAD-seq) and a transcriptome assembled from RNA-seq data to analyze the genetic structure of...

Data from: Prey state shapes the effects of temporal variation in predation risk

Catherine M. Matassa & Geoffrey C. Trussell
The ecological impacts of predation risk are influenced by how prey allocate foraging effort across periods of safety and danger. Foraging decisions depend on current danger, but also on the larger temporal, spatial or energetic context in which prey manage their risks of predation and starvation. Using a rocky intertidal food chain, we examined the responses of starved and fed prey (Nucella lapillus dogwhelks) to different temporal patterns of risk from predatory crabs (Carcinus maenas)....

Data from: Genetic differentiation among isolates of Teredinibacter turnerae, a widely occurring intracellular endosymbiont of shipworms

Marvin A. Altamia, Nicole Wood, Jennifer M. Fung, Sandra Dedrick, Eric W. Linton, Gisela P. Concepcion, Margo G. Haygood & Daniel L. Distel
Teredinibacter turnerae is a cultivable intracellular endosymbiont of xylotrophic (wood-feeding) bivalves of the Family Teredinidae (shipworms). Although T. turnerae has been isolated from many shipworm taxa collected in many locations, no systematic effort has been made to explore genetic diversity within this symbiont species across the taxonomic and geographical range of its hosts. The mode of symbiont transmission is unknown. Here, we examine sequence diversity in fragments of six genes (16S rRNA, gyrB, sseA, recA,...

Data from: Use of anisotropy, 3D segmented atlas, and computational analysis to identify gray matter subcortical lesions common to concussive injury from different sites on the cortex

Praveen Kulkarni, William Kenkel, Seth P. Finklestine, Thomas M. Barchet, JingMei Ren, Mathew Davenport, Martha E. Shenton, Zora Kikinis, Mark Nedelman & Craig F. Ferris
Traumatic brain injury (TBI) can occur anywhere along the cortical mantel. While the cortical contusions may be random and disparate in their locations, the clinical outcomes are often similar and difficult to explain. Thus a question that arises is, do concussions at different sites on the cortex affect similar subcortical brain regions? To address this question we used a fluid percussion model to concuss the right caudal or rostral cortices in rats. Five days later,...

Data from: Thermal stress and predation risk trigger distinct transcriptomic responses in the intertidal snail Nucella lapillus

Nathaniel D. Chu, Luke P. Miller, Stefan T. Kaluziak, Geoffrey C. Trussell & Steven V. Vollmer
Thermal stress and predation risk have profound effects on rocky shore organisms, triggering changes in their feeding behaviour, morphology and metabolism. Studies of thermal stress have shown that underpinning such changes in several intertidal species are specific shifts in gene and protein expression (e.g. upregulation of heat-shock proteins). But relatively few studies have examined genetic responses to predation risk. Here, we use next-generation RNA sequencing (RNA-seq) to examine the transcriptomic (mRNA) response of the snail...

Data from: Predatory fish sounds can alter crab foraging behavior and influence bivalve abundance

A. Randall Hughes, David A. Mann & David L. Kimbro
The risk of predation can have large effects on ecological communities via changes in prey behaviour, morphology and reproduction. Although prey can use a variety of sensory signals to detect predation risk, relatively little is known regarding the effects of predator acoustic cues on prey foraging behaviour. Here we show that an ecologically important marine crab species can detect sound across a range of frequencies, probably in response to particle acceleration. Further, crabs suppress their...

Data from: Genotypic diversity and trait variance interact to affect marsh plant performance

A. Randall Hughes
1. Intraspecific diversity can have important effects on population, community and ecosystem processes, yet we have little understanding of the relative importance of genetic- vs. trait-based measures of intraspecific diversity. 2. I conducted a manipulative field experiment of plant (Spartina alterniflora) genotypic diversity and trait diversity to examine their independent and interactive effects on plant performance and community structure. I focused on variation within and among genotypes in plant stem height, a trait that varies...

Registration Year

  • 2014
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  • Northeastern University
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  • Oregon Health & Science University
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  • Stanford University
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  • Providence College
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  • Central Michigan University
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  • University of South Florida
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  • University of the Philippines Diliman
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  • Brigham and Women's Hospital
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  • Florida State University
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  • Brown University
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