35 Works

Data from: Differential migratory timing of western populations of Wilson’s Warblers revealed by mitochondrial DNA and stable isotopes

Kristina L. Paxton, Monica Yau, Frank R. Moore & Darren E. Irwin
Molecular markers and stable isotopes have provided important insights into the migratory connectivity of small landbirds. Research integrating these two methods has primarily focused on linking breeding and wintering sites, rather than focusing on timing of migratory movement of different breeding populations. We used mitochondrial DNA and isotopic markers to infer the timing of various breeding populations of migrating Wilson's Warblers (Cardellina pusilla) moving through a migratory stopover site, demonstrating the value of multiple sources...

Data from: Hybridization and introgression in two ecologically dissimilar Fundulus hybrid zones

Jacob F. Schaefer, David D. Duvernell, Dave Cooper Campbell & Jacob Schaefer
Hybridization and introgression appear more common in rapidly evolving groups, suggesting an important role in the evolutionary process. Detailed studies of how extrinsic or intrinsic forces regulate hybridization and introgression have the potential for broadening our understanding of mechanisms generating diversity. Species in the Fundulus notatus species complex have broad overlapping ranges and occur in replicated hybrid zones along predictable stream gradients. Typical hybrid zone structure has F. olivaceus in headwaters, F. notatus downstream, and...

Data from: Environmental extremes drive population structure at the northern range limit of Atlantic salmon in North America

Emma V.A. Sylvester, Robert G. Beiko, Paul Bentzen, Ian Paterson, John B. Horne, Beth Watson, Sarah Lehnert, Steven Duffy, Marie Clément, Martha J. Robertson, Ian R. Bradbury & Emma V. A. Sylvester
Conservation of exploited species requires an understanding of both genetic diversity and the dominant structuring forces, particularly near range limits, where climatic variation can drive rapid expansions or contractions of geographic range. Here, we examine population structure and landscape associations in Atlantic salmon (Salmo salar) across a heterogeneous landscape near the northern range limit in Labrador, Canada. Analysis of two amplicon-based data sets containing 101 microsatellites and 376 single nucleotide polymorphisms (SNPs) from 35 locations...

Data from: Population genomics of Fundulus grandis exposed to oil from Deepwater Horizon

Jacob Schaefer, Brian R. Kreiser, Stephen Flanagan & Brian Kreiser
The April 2010 Deepwater Horizon (DWH) oil spill released over 4 million barrels of oil into northern Gulf of Mexico ecosystems. Due to the magnitude of the spill and observed effects from previous spills, the ecological impacts were predicted to be catastrophic. While negative effects of petroleum hydrocarbon exposure to fish have been documented at the organismal scale, most studies of fish assemblages have noted few, if any, DWH impacts. Our understanding of DWH effects...

Data from: Detrital nutrient content and leaf species differentially affect growth and nutritional regulation of detritivores

Halvor M. Halvorson, Chris L. Fuller, Sally A. Entrekin, J. Thad Scott & Michelle A. Evans-White
Resource nutrient content and identity are common bottom-up controls on organismal growth and nutritional regulation. One framework to study these factors, ecological stoichiometry theory, predicts that elevated resource nitrogen (N) and phosphorus (P) contents enhance organism growth by alleviating constraints on N and P acquisition. However, the regulatory mechanisms underlying this response – including whether responses depend on resource identity – remain poorly understood. In this study, we tested roles of detrital N and P...

Data from: Changes in aspects of emergent and submerged vegetation cover, richness, and diversity in a fragmenting marsh system

Kelly Darnell, Tim Carruthers, M. Zachary Darnell, Adam Kemberling, Leland Moss & Lennah Shakeri
Habitat fragmentation is a global environmental challenge, and the marshes of southeastern Louisiana are a hotspot for habitat fragmentation. Evaluating marsh ecosystems during the transition from intact to fragmented is critical to predict future changes and inform effective conservation and restoration plans. We sampled three sites in Terrebonne Basin, Louisiana to characterize a fragmenting emergent-vegetation dominated system, investigate the relationship between plant species richness and diversity and marsh fragmentation, and determine the relationship between marsh...

Data from: Carry-over effects of winter habitat quality on en route timing and condition of a migratory passerine during spring migration

Kristina L. Paxton & Frank R. Moore
We examined how conditions prior to migration influenced migration performance of two breeding populations of black-and-white warblers (Mniotilta varia) by linking information on the migrant's winter habitat quality, measured via stable carbon isotopes, with information on their breeding destination, measured via stable hydrogen isotopes. The quality of winter habitat strongly influenced the timing of migration when we accounted for differential timing of migration between breeding populations. Among birds migrating to the same breeding destination, males...

Data from: Fish faunal provinces of the conterminous United States of America reflect historical geography and familial composition

Wilfredo A. Matamoros, Christopher W. Hoagstrom, Jacob F. Schaefer & Brian R. Kreiser
Although the conterminous USA has a long history of ichthyological exploration, the description of biogeographical provinces has been ad hoc. In this study we quantitatively determined fish faunal provinces and interpreted them in the context of the geological history of North America. We also evaluated influences of major river basin occupancy and contemporary environmental factors on provincial patterns. Our data set comprised 794 native fishes, which we used to generate a presence and absence matrix...

Data from: The interactive effects of photoperiod and future climate change may have negative consequences for a wide-spread invasive insect

Donald A. Yee, Nnaemeka F. Ezeakacha & Karen C. Abbott
Increasing global temperatures may affect many ectotherms, including insects, although increasing temperatures are thought to benefit future populations through effects on adult size, fecundity, or populations. However, the way that temperature may interact with photoperiod is not well understood. We study this problem using the Asian tiger mosquito Aedes albopictus, an important worldwide invasive whose future spread is thought to be affected by changes in climate. We investigated how mass at maturity varied with temperature...

Data from: Genetic assignment with isotopes and habitat suitability (GAIAH), a migratory bird case study

Kristen C. Ruegg, Eric C. Anderson, Ryan J. Harrigan, Kristina L. Paxton, Jeffrey F. Kelly, Frank Moore & Thomas B. Smith
1. Identifying migratory connections across the annual cycle is important for studies of migrant ecology, evolution, and conservation. While recent studies have demonstrated the utility of high-resolution SNP-based genetic markers for identifying population-specific migratory patterns, the accuracy of this approach relative to other intrinsic tagging techniques has not yet been assessed. 2. Here, using a straightforward application of Bayes' Rule, we develop a method for combining inferences from high-resolution genetic markers, stable isotopes, and habitat...

Data from: Late Pleistocene range expansion of North American topminnows accompanied by admixture and introgression.

David D. Duvernell, Eric Westhafer & Jacob F. Schaefer
Aim: We used genome-scale sampling to assess the phylogeography of a group of topminnows in the Fundulus notatus species complex. Two of the species have undergone extensive range expansions resulting in broadly overlapping distributions, and sympatry within drainages has provided opportunities for hybridization and introgression. We assess the timing and pattern of range expansion in the context of late-Pleistocene-Holocene drainage events, and evaluate the evidence for introgressive hybridization between species. Location: Central and southern United...

Modeling a Values-Based-Congruence Framework to Predict Organization Constructs in Fraternties and Sororities

Joshua Schutts & Kyna Shelley

Data from: Fluctuating asymmetry in Menidia beryllina before and after the 2010 DeepWater Horizon oil spill

Savannah Michaelsen, Jacob Schaefer & Mark S. Peterson
Assessing the impacts of the Deepwater Horizon oil spill with a dependable baseline comparison can provide reliable insight into environmental stressors on organisms that were potentially affected by the spill. Fluctuating asymmetry (small, non-random deviations from perfect bilateral symmetry) is an informative metric sensitive to contaminants that can be used to assess environmental stress levels. For this study, the well-studied and common Gulf of Mexico estuarine fish, Menidia beryllina, was used with pre and post-oil...

Data from: Spatial dynamics and mixing of bluefin tuna in the Atlantic Ocean and Mediterranean Sea revealed using next generation sequencing

Gregory Neils Puncher, Alessia Cariani, Gregory E. Maes, Jeroen Van Houdt, Koen Herten, Rita Cannas, Naiara Rodriguez-Ezpeleta, Aitor Albaina, M. Andone Estonba, Molly Lutcavage, Alex Hanke, Jay Rooker, James S. Franks, Joseph M. Quattro, Gualtiero Basilone, Igaratza Fraile, Urtzi Laconcha, Nicolas Goñi, Ai Kimoto, A. David Macías, Francisco Alemany, Simeon Deguara, Salem W. Zgozi, Fulvio Garibaldi, Isik K. Oray … & Fausto Tinti
The Atlantic bluefin tuna is a highly migratory species emblematic of the challenges associated with shared fisheries management. In an effort to resolve the species’ stock dynamics, a genome-wide search for spatially informative single nucleotide polymorphisms (SNPs) was undertaken, by way of sequencing reduced representation libraries. An allele frequency approach to SNP discovery was used, combining the data of 555 larvae and young-of-the-year (LYOY) into pools representing major geographical areas and mapping against a newly...

Data from: The molecular biogeography of the Indo-Pacific: testing hypotheses with multispecies genetic patterns

Eric D. Crandall, Cynthia Riginos, Chris E. Bird, Libby Liggins, Eric Treml, Maria Beger, Paul H. Barber, Sean R. Connolly, Peter F. Cowman, Joseph D. Dibattista, Jeff A. Eble, Sharon F. Magnuson, John B. Horne, Marc Kochzius, Harilaos A. Lessios, Shang Yin Vanson Liu, William B. Ludt, Hawis Madduppa, John M. Pandolfi, Robert R. Toonen, Contributing Members Of Diversity Of The Indo-Pacific Network & Michelle R. Gaither
Aim: To test hypothesized biogeographic partitions of the tropical Indo-Pacific Ocean with phylogeographic data from 56 taxa, and to evaluate the strength and nature of barriers emerging from this test. Location: The Indo-Pacific Ocean. Time Period: Pliocene through the Holocene. Major Taxa Studied: 56 marine species. Methods: We tested eight biogeographic hypotheses for partitioning of the Indo-Pacific using a novel modification to analysis of molecular variance. Putative barriers to gene flow emerging from this analysis...

Data from: Chromosome polymorphisms track trans‐Atlantic divergence and secondary contact in Atlantic salmon

Sarah J. Lehnert, Paul Bentzen, Tony Kess, Sigbjorn Lien, John B. Horne, Marie Clément & Ian R. Bradbury
Pleistocene glaciations drove repeated range contractions and expansions shaping contemporary intraspecific diversity. Atlantic salmon (Salmo salar) in the western and eastern Atlantic diverged >600,000 YBP, with the two lineages isolated in different southern refugia during glacial maxima, driving trans-Atlantic genomic and karyotypic divergence. Here, we investigate genomic consequences of glacial isolation and trans-Atlantic secondary contact using 108,870 single nucleotide polymorphisms (SNPs) genotyped in 80 North American and European populations. Throughout North America, we identified extensive...

Mosquito community composition in San Juan, Puerto Rico

Donald Yee & Nicole Scavo
Mosquito community dynamics in urban areas are influenced by an array of both social and ecological factors. Human socioeconomic factors (SEF) can be related to mosquito abundance and diversity as urban mosquito development sites are modified by varying human activity, e.g. level of abandoned structures or amount of accumulated trash. The goal of this study was to investigate the relationships among mosquito diversity, populations of Aedes aegypti, and SEF in a tropical urban setting. Mosquitoes...

Data from: Balancing risk and reward: mating opportunity influences thermal refuge use in fiddler crabs

M. Zachary Darnell, Talene Yeghissian & Zachary M. Lane
Behavioural thermoregulation can ameliorate thermal stress but is costly. For species that court in a thermally stressful microhabitat, sexual selection via endurance rivalry favours individuals that are able and willing to endure harsh conditions in the courtship habitat, as retreats to a thermal refuge will reduce mating opportunities. The relative costs and benefits of refuge use versus continued courtship in the face of thermal risk, which vary across abiotic and biotic contexts, determine the optimal...

Long-term minnow community data from the Bayou Pierre, Mississippi

Loren Stearman
Long-term community monitoring is becoming an important tool for ecological studies. Historical data are present in a variety of sources but often require considerable effort to extract, filter, and verify prior to analyses. In this dataset we document minnow (sensu lato, Cyprinidae + Leuciscidae) communities in the Bayou Pierre, Mississippi. We include filtered community data from twelve localities and three time periods (1974-75, 1985-89, 2019-20) derived from a mixture of literature, museum collections, and contemporary...

Data from: Mapping migration in a songbird using high-resolution genetic markers

Kristen Ruegg, Eric C. Anderson, Kristina L. Paxton, Vanessa Apkenas, Sirena Lao, Rodney B. Siegel, David F. DeSante, Frank Moore, Thomas B. Smith & Kristen C. Ruegg
Neotropical migratory birds are declining across the Western Hemisphere, but conservation efforts have been hampered by the inability to assess where migrants are most limited – the breeding grounds, migratory stopover sites, or wintering areas. A major challenge has been the lack of an efficient, reliable, and broadly applicable method for measuring the strength of migratory connections between populations across the annual cycle. Here we show how high-resolution genetic markers can be used to identify...

Data from: Leaf litter nutrient uptake in an intermittent blackwater river: influence of tree species and associated biotic and abiotic drivers

Andrew S. Mehring, Kevin A. Kuehn, Aaron Thompson, Catherine M. Pringle, Amy D. Rosemond, Matthew R. First, R Richard Lowrance & George Vellidis
1. Organic matter may sequester nutrients as it decomposes, increasing in total N and P mass via multiple uptake pathways. During leaf litter decomposition, microbial biomass and accumulated inorganic materials immobilize and retain nutrients, and therefore, both biotic and abiotic drivers may influence detrital nutrient content. We examined the relative importance of these types of nutrient immobilization and compared patterns of nutrient retention in recalcitrant and labile leaf litter. 2. Leaf packs of water oak...

Data from: Connecting the dots: Stopover strategies of an intercontinental migratory songbird in the context of the annual cycle

Kristina L. Paxton & Frank R. Moore
The phases of the annual cycle for migratory species are inextricably linked. Yet, less than five percent of ecological studies examine seasonal interactions. In this study, we utilized stable hydrogen isotopes to geographically link individual black-and-white warblers (Mniotilta varia) captured during spring migration with breeding destinations to understand a migrant's stopover strategy in the context of other phases of the annual cycle. We found that stopover strategy is not only a function of a bird's...

Data from: Range-wide and regional patterns of population structure and genetic diversity in the gopher tortoise

Daniel Gaillard, Joshua R. Ennen, Brian R. Kreiser, Carl P. Qualls, Sarah C. Sweat, Roger Birkhead, Tracey D. Tuberville, Matthew Aresco, Earl D. McCoy, Henry R. Mushinsky, Thomas W. Hentges, B.R. Kreiser, C.P. Qualls, T.D. Tuberville, E.D. McCoy, H.R. Mushinsky & T.W. Hentges
The gopher tortoise (Gopherus polyphemus) has experienced dramatic population declines throughout its distribution in the southeastern United States and is federally listed as threatened in the area west of the Tombigbee-Mobile Rivers. While there is molecular support for recognizing the listed portion of the range as genetically distinct, other research has suggested that additional population structure exists at both range-wide and regional scales. In this study, we sought to comprehensively define structure at both spatial...

Data from: The strength of migratory connectivity for birds en route to breeding through the Gulf of Mexico

Emily B. Cohen, Clark R. Rushing, Frank R. Moore, Michael T. Hallworth, Jeffrey A. Hostetler, Mariamar Gutierrez Ramirez & Peter P. Marra
The strength of migratory connectivity is a measure of the cohesion of populations among phases of the annual cycle, including breeding, migration, and wintering. Many Nearctic-Neotropical species have strong migratory connectivity between breeding and wintering phases of the annual cycle. It is less clear if this strength persists during migration when multiple endogenous and exogenous factors may decrease the cohesion of populations among routes or through time along the same routes. We sampled three bird...

Quantifying species traits related to oviposition behavior and offspring survival in two important disease vectors

Donald Yee, William Glasgow & Nnaemeka Ezeakacha
Animals with complex life cycles have traits related to oviposition and juvenile survival that can respond to environmental factors in similar or dissimilar ways. We examined the preference-performance hypothesis (PPH), which states that females lacking parental care select juvenile habitats that maximize fitness, for two ubiquitous mosquito species, Aedes albopictus and Culex quinquefasciatus. Specifically, we examined if environmental factors known to affect larval abundance patterns in the field played a role in the PPH for...

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Affiliations

  • University of Southern Mississippi
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