58 Works

Compensatory growth and costs of molluscivory in Gambusia holbrooki

Brian Langerhans, Taylor Goins, Kenzi Stemp & Rüdiger Riesch
Some prey are exceptionally difficult to digest, and yet even non-specialized animals may consume them—why? Durophagy, the consumption of hard-shelled prey, is thought to require special adaptations for crushing or digesting the hard shells to avoid the many potential costs of this prey type. But many animals lacking specializations nevertheless include hard-bodied prey in their diets. We describe several non-mutually exclusive adaptive mechanisms that could explain such a pattern, and point to optimal foraging and...

Genomic population structure of striped bass (Morone saxatilis) from the Gulf of St. Lawrence to Cape Fear River

Nathalie LeBlanc, Benjamin Gahagan, Samuel Andrews, Trevor Avery, Gregory Puncher, Benjamin Reading, Colin Buhariwalla, R Allen Curry, Andrew Whitely & Scott Pavey
Striped Bass, Morone saxatilis (Walbaum, 1792), is an anadromous fish species that supports fisheries throughout North America and is native to the North American Atlantic Coast. Due to long coastal migrations that span multiple jurisdictions, a detailed understanding of population genomics is required to untangle demographic patterns, understand local adaptation, and characterize population movements. This study used 1256 single nucleotide polymorphism (SNP) loci to investigate genetic structure of 477 Striped Bass sampled from 15 locations...

Data from: Bee phenology is predicted by climatic variation and functional traits

Michael Stemkovski, Will Pearse, Sean Griffin, Gabriella Pardee, Jason Gibbs, Terry Griswold, John Neff, Ryan Oram, Molly RightMyer, Cory Sheffield, Karen Wright, Brian Inouye, David Inouye & Rebecca Irwin
Climate change is shifting the environmental cues that determine the phenology of interacting species. Plant-pollinator systems may be susceptible to temporal mismatch if bees and flowering plants differ in their phenological responses to warming temperatures. While the cues that trigger flowering are well-understood, little is known about what determines bee phenology. Using Generalized Additive Models, we analyzed time-series data representing 67 bee species collected over nine years in the Colorado Rocky Mountains to perform the...

Outdoor activity participation improves adolescents’ mental health and well-being during the COVID-19 pandemic

Steven Jackson, Kathryn Stevenson, Lincoln Larson, Nils Peterson & Erin Seekamp
The COVID-19 pandemic is reshaping human interactions with the natural environment, generating profound consequences for health and well-being. To assess the effects of COVID-19 on the outdoor recreation participation and well-being of adolescents we conducted a nationally representative survey of youth ages 10-18 across the United States (n = 624) using a Qualtrics XM panel between April 30 and June 15, 2020. Survey questions focused on frequency of participation in several types of outdoor activities...

Drought legacy affects microbial community trait distributions related to moisture along a savannah grassland precipitation gradient

Ainara Leizeaga, Lettice C. Hicks, Lokeshwaran Manoharan, Christine V. Hawkes & Johannes Rousk
Ecosystem models commonly use stable-state assumptions to predict responses of soil microbial functions to environmental change. However, past climatic conditions can shape microbial functional responses resulting in a “legacy effect”. For instance, exposure to drier conditions in the field may shape how soil microbial communities respond to subsequent drought and drying and rewetting events. We investigated microbial tolerance to low moisture levels (“resistance”) and ability to recover after a drying and rewetting (DRW) perturbation (“resilience”)...

Recurrent mismatch binding by MutS mobile clamps on DNA localizes repair complexes nearby

Keith Weninger, Pengyu Hao, Sharonda J. LeBlanc, Brandon C. Case, Timothy C. Elston, Manju M. Hingorani & Dorothy A. Erie
DNA mismatch repair (MMR), the guardian of the genome, commences when MutS identifies a mismatch and recruits MutL to nick the error-containing strand, allowing excision and DNA resynthesis. Dominant MMR models posit that after mismatch recognition, ATP converts MutS to a hydrolysis-independent, diffusive mobile clamp that no longer recognizes the mismatch. Little is known about the postrecognition MutS mobile clamp and its interactions with MutL. Two disparate frameworks have been proposed: One in which MutS–MutL...

Data for: Tunable self-cleaving ribozymes for modulating gene expression in eukaryotic systems

Thomas Jacobsen, Gloria Yi, Hadel Al Asafen, Ashley Jermusyk, Chase Beisel & Gregory Reeves
Advancements in the field of synthetic biology have been possible due to the development of genetic tools that are able to regulate gene expression. However, the current toolbox of gene regulatory tools for eukaryotic systems have been outpaced by those developed for simple, single-celled systems. Here, we engineered a set of gene regulatory tools by combining self-cleaving ribozymes with various upstream competing sequences that were designed to disrupt ribozyme self-cleavage. As a proof-of-concept, we were...

Large losses of ammonium-nitrogen from a rice ecosystem under elevated CO2

Lei Cheng, Chenchao Xu, Kaihang Zhang, Wanying Zhu, Jing Xiao, Chen Zhu, Naifang Zhang, Fangjian Yu, Shuyao Li, Chunwu Zhu, Qichao Tu, Xin Chen, Jianguo Zhu, Shuijin Hu, Roger T Koide & Mary K Firestone
Inputs of nitrogen into terrestrial ecosystems, mainly via the use of ammonium-based fertilizers in agroecosystems, are enormous, but its fate under elevated atmospheric carbon dioxide (CO2) is not well understood. We have taken advantage of a 15-year free air CO2 enrichment study to investigate the influence of elevated CO2 on the transformation of ammonium-nitrogen in a rice ecosystem in which ammonium is usually assumed to be stable under anaerobic conditions. We demonstrate that elevated CO2...

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  • 2020
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  • North Carolina State University
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