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Articles 61 - 90 of 1770
Full-Text Articles in Life Sciences
Ur’S Witness Oak Project Honors Enslaved Ancestors, W. John Hayden
Ur’S Witness Oak Project Honors Enslaved Ancestors, W. John Hayden
Biology Faculty Publications
This article is about one tree and one cemetery plot. Though the existence of some may have been forgotten, many more burial grounds for the enslaved are known and some of these may still have trees old enough to have “witnessed” the interments of those who toiled so hard, for so long. What better way to remember their contributions to the land that continues to nourish us than by maintaining a living legacy of Witness Tree progeny?
Visualizing Embryogenesis In The Seed, Janlo M. Robil, Dechang Cao
Visualizing Embryogenesis In The Seed, Janlo M. Robil, Dechang Cao
Biology Faculty Publications
No abstract provided.
A Framework For Modeling The Impacts Of Adaptive Search Intensity On The Efficiency Of Abundance Surveys., Laura Jiménez, John R Fieberg, Michael Mccartney, Jake M Ferguson
A Framework For Modeling The Impacts Of Adaptive Search Intensity On The Efficiency Of Abundance Surveys., Laura Jiménez, John R Fieberg, Michael Mccartney, Jake M Ferguson
Biology Faculty Publications
When planning abundance surveys, the impact of search intensity on the quality of the density estimates is rarely considered. We constructed a time-budget modeling framework for abundance surveys using principles from optimal foraging theory. We link search intensity to the number of sample units surveyed, searcher detection probability, the number of detections made, and the precision of the estimated population density. This framework allowed us to determine how a searcher should behave to produce optimized density estimates. Using data collected from quadrat and removal surveys of zebra mussels (Dreissena polymorpha) in central Minnesota, we applied this framework to evaluate potential …
Zebrafish (Danio Rerio) Behavioral Phenotypes Are Not Underscored By Different Gut Microbiomes, Paul A. Ayayee, Ryan Y. Wong
Zebrafish (Danio Rerio) Behavioral Phenotypes Are Not Underscored By Different Gut Microbiomes, Paul A. Ayayee, Ryan Y. Wong
Biology Faculty Publications
Although bold and shy behavioral phenotypes in zebrafish (Danio rerio) have been selectively bred and maintained over multiple generations, it is unclear if they are underscored by different gut microbiota. Using the microbiota–gut–brain concept, we examined the relationship between gut microbiota and the behavioral phenotypes within this model animal system to assess possible gut microbe-mediated effects on host behavior. To this end, we amplified and sequenced 16S rRNA gene amplicons from the guts of bold and shy zebrafish individuals using the Illumina Miseq platform. We did not record any significant differences in within-group microbial diversity nor between-group community …
Phylotranscriptomic Relationships Of The Oophila Clade Of Green Algae Associated To Amphibian Egg Masses, Ryan Kerney, Miguel Vences, Maria Sachs, Iker Irisarri, Fabian Bartels, Pontus Eriksson, Sven Künzel, Atsushi Kurabayashi, Ane Laugen, Zachary Vegso, Cory Bishop, Hartmut Arndt
Phylotranscriptomic Relationships Of The Oophila Clade Of Green Algae Associated To Amphibian Egg Masses, Ryan Kerney, Miguel Vences, Maria Sachs, Iker Irisarri, Fabian Bartels, Pontus Eriksson, Sven Künzel, Atsushi Kurabayashi, Ane Laugen, Zachary Vegso, Cory Bishop, Hartmut Arndt
Biology Faculty Publications
Green algae usually assigned to the genus Oophila are known to colonize egg capsules of amphibian egg masses across the Nearctic and Palearctic regions. We study the phylogenetic relationships of these algae using a phylotranscriptomic data set of 76 protein-coding single-copy nuclear genes. Our data set includes novel RNAseq data for six amphibian-associated and five free-living green algae, and draft genomes of two of the latter. Within the Oophila clade (nested within Moewusinia), we find samples from two European frogs (Rana dalmatina and R. temporaria) closely related to those of the North American frog R. aurora (Oophila …
The Role Of Southern Red-Backed Voles, Myodes Gapperi, And Peromyscus Mice In The Enzootic Maintenance Of Lyme Disease Spirochetes In North Dakota, Usa, Michael W. Dougherty, Nathan M. Russart, Robert A. Gaultney, Emily Marie Gisi, Haley M. Cooper, Lindsey R. Kallis, Catherine A. Brissette, Jefferson A. Vaughan
The Role Of Southern Red-Backed Voles, Myodes Gapperi, And Peromyscus Mice In The Enzootic Maintenance Of Lyme Disease Spirochetes In North Dakota, Usa, Michael W. Dougherty, Nathan M. Russart, Robert A. Gaultney, Emily Marie Gisi, Haley M. Cooper, Lindsey R. Kallis, Catherine A. Brissette, Jefferson A. Vaughan
Biology Faculty Publications
Lyme disease has expanded into the Great Plains of the USA. To investigate local enzootic transmission, small mammals were trapped in two forested tracts in northeastern North Dakota during 2012 and 2013. Peromyscus mice and southern red-backed voles, Myodes gapperi, comprised over 90% of all mammals captured. One site was dominated by Peromyscus (79% of 100 mammals captured). At the other site, M. gapperi (59% of 107 mammals captured) was more abundant than Peromyscus (36%). Immature stages of two tick species parasitized small mammals: Dermacentor variabilis and Ixodes scapularis. Larval I. scapularis ectoparasitism was significantly higher on Peromyscus (81% …
High Sugar Diet Alters Immune Function And The Gut Microbiome In Juvenile Green Iguanas (Iguana Iguana), Kwanho C. Ki, Erin L. Lewis, Elizabeth Wu, Francis J. Oliaro, Lise M. Aubry, Charles R. Knapp, Karen M. Kapheim, Dale Denardo, Susannah S. French
High Sugar Diet Alters Immune Function And The Gut Microbiome In Juvenile Green Iguanas (Iguana Iguana), Kwanho C. Ki, Erin L. Lewis, Elizabeth Wu, Francis J. Oliaro, Lise M. Aubry, Charles R. Knapp, Karen M. Kapheim, Dale Denardo, Susannah S. French
Biology Faculty Publications
The present work aimed to study whether a high sugar diet can alter immune responses and the gut microbiome in green iguanas. Thirty-six iguanas were split into four treatment groups using a 2x2 design. Iguanas received either a sugar-supplemented diet or a control diet, and either a lipopolysaccharide (LPS) injection or a phosphate-buffered saline (PBS) injection. Iguanas were given their respective diet treatment through the entire study (~3 months) and received a primary immune challenge 1 and 2 months into the experiment. Blood samples and cloacal swabs were taken at various points in the experiment and used to measure changes …
A Timely Death Of The Tapetum Underlies More Floret1 (Mof1) Regulation Of Male Fertility In Rice, Janlo M. Robil
A Timely Death Of The Tapetum Underlies More Floret1 (Mof1) Regulation Of Male Fertility In Rice, Janlo M. Robil
Biology Faculty Publications
No abstract provided.
Turtleheads, Iridoids, And Checkerspots, W. John Hayden
Turtleheads, Iridoids, And Checkerspots, W. John Hayden
Biology Faculty Publications
This article follows the story of how a plant, a molecule, and an herbivore interact with each other. The plant, of course, is White Turtlehead (Chelone glabra), the 2024 VNPS Wildlower of the Year; the molecule is something called an iridoid glycoside; and the herbivore is the Baltimore Checkerspot Butterfly (Euphydras phaeton).
Pollination And Seed Production Of Lavandula Angustifolia Mill. (Lamiaceae), Sam S. Ingram, Tyler M. Wilson, Joseph S. Wilson, Emma A. Ziebarth, Makenna C. Johnson, Jacob G. Young, Richard E. Carlson
Pollination And Seed Production Of Lavandula Angustifolia Mill. (Lamiaceae), Sam S. Ingram, Tyler M. Wilson, Joseph S. Wilson, Emma A. Ziebarth, Makenna C. Johnson, Jacob G. Young, Richard E. Carlson
Biology Faculty Publications
Lavandula angustifolia Mill., lavender, is an aromatic plant in the Lamiaceae family. Lavender is an important economic plant that is cultivated throughout the world. Previous studies have shown that the primary pollinators of lavender in Europe and North Africa are bee species, specifically Bombus spp. However, similar studies have not been previously performed in North America. The current study, on cultivated population lavender (grown from seed) in Utah (USA), found a diverse community of bees visiting lavender over a 4-week sequential and successive blooming period. The observed and identified bees were distinguished across 8 genera and 12 species, of which …
Evolution Repeats Itself In Replicate Long-Term Studies In The Wild, Patrik Nosil, Clarissa F. De Carvalho, Romain Villoutreix, Laura S. Zamorano, Marion Sinclair-Waters, Nicholas P. Planidin, Thomas L. Parchman, Jeffrey Feder, Zach Gompert
Evolution Repeats Itself In Replicate Long-Term Studies In The Wild, Patrik Nosil, Clarissa F. De Carvalho, Romain Villoutreix, Laura S. Zamorano, Marion Sinclair-Waters, Nicholas P. Planidin, Thomas L. Parchman, Jeffrey Feder, Zach Gompert
Biology Faculty Publications
The extent to which evolution is repeatable remains debated. Here, we study changes over time in the frequency of cryptic color-pattern morphs in 10 replicate long-term field studies of a stick insect, each spanning at least a decade (across 30 years of total data). We find predictable “up-and-down” fluctuations in stripe frequency in all populations, representing repeatable evolutionary dynamics based on standing genetic variation. A field experiment demonstrates that these fluctuations involve negative frequency-dependent natural selection (NFDS). These fluctuations rely on demographic and selective variability that pushes populations away from equilibrium, such that they can reliably move back toward it …
Assessing The Effects Of Cold Storage Regimes Of North American Bombus Gynes, Thuy Tien T. Lindsay, Marcia M. Hagen, Joyce N. Knoblett, Joseph P. Rinehart, Karen M. Kapheim, James P. Strange
Assessing The Effects Of Cold Storage Regimes Of North American Bombus Gynes, Thuy Tien T. Lindsay, Marcia M. Hagen, Joyce N. Knoblett, Joseph P. Rinehart, Karen M. Kapheim, James P. Strange
Biology Faculty Publications
Bumble bees are the primary commercial pollinators for greenhouse-grown crops and managing them requires insight into the Bombus life cycle. However, some aspects of the life cycle are not fully understood. Once mated, adult Bombus gynes can be stored for a short term at a constant low temperature (CLT). However, survival rates for some species are low during CLT, particularly when storage periods exceed a month. To address this, we tested the hypothesis that Bombus gynes stored in a fluctuating thermal regime (FTR) have increased survival compared to gynes stored in CLT. Specifically, the FTR had a baseline temperature of …
Baseline Assessment And Early Effects Of A Network Of Marine Protected Areas, Victor Brun, Laurre Thierry De Ville D'Avray, Ma. May Saludsod, Roger D. Dolorosa, Niño Jess Mar F. Mecha, Kent Olson S. Sorgon, Joachim Claudet
Baseline Assessment And Early Effects Of A Network Of Marine Protected Areas, Victor Brun, Laurre Thierry De Ville D'Avray, Ma. May Saludsod, Roger D. Dolorosa, Niño Jess Mar F. Mecha, Kent Olson S. Sorgon, Joachim Claudet
Biology Faculty Publications
Marine protected areas (MPAs) can be a useful tool to manage coastal ecosystems, delivering both social and ecological outcomes. However, in many instances, relevant data is missing to conduct proper impact assessments, which is key to identifying ecological and social synergies and potential trade-offs, and to adapting management according to local objectives. The ecological effects of an MPA established in Palawan, Philippines, in 2016, were assessed. The most common species targeted by fisheries were identified by local fishers. Species size and number were collected through underwater visual census with n = 288 belt transects assigned in different sites and locations …
Plastid Translation As A Developmental Checkpoint? Plastid Ribosomal Protein Emb27 Is Required For Maize Embroyogenesis, Janlo M. Robil
Plastid Translation As A Developmental Checkpoint? Plastid Ribosomal Protein Emb27 Is Required For Maize Embroyogenesis, Janlo M. Robil
Biology Faculty Publications
No abstract provided.
The Plant Disease Triangle Facing Climate Change: A Molecular Perspective, Charles Roussin-Léveillée, Christina A. M. Rossi, Christian Castroverde, Peter Moffett
The Plant Disease Triangle Facing Climate Change: A Molecular Perspective, Charles Roussin-Léveillée, Christina A. M. Rossi, Christian Castroverde, Peter Moffett
Biology Faculty Publications
No abstract provided.
2024 Woy: Turtleheads And Bumblebees, W. John Hayden
2024 Woy: Turtleheads And Bumblebees, W. John Hayden
Biology Faculty Publications
No abstract provided.
Population Genomics Provide Insight Into Ancestral Relationships And Diversity Of The Feral Horses Of Theodore Roosevelt National Park, Melissa A. Thompson, Blake E. Mccann, Turk Rhen, Rebecca Simmons
Population Genomics Provide Insight Into Ancestral Relationships And Diversity Of The Feral Horses Of Theodore Roosevelt National Park, Melissa A. Thompson, Blake E. Mccann, Turk Rhen, Rebecca Simmons
Biology Faculty Publications
Theodore Roosevelt National Park (TRNP) manages a herd of feral horses (Equus caballus) which was present on the landscape prior to the establishment of the park. The population presents a unique scenario in that it has experienced fairly intensive and well-documented management since the park's establishment, including herd size reductions, intentional introduction of diversity, and subsequent attempts to remove introduced lineages. This provides an interesting case study on the genetic effects of diverse evolutionary forces on an isolated feral population. To explore the effects of these forces and clarify the relationship of this feral herd with other horses, …
Two Birds With One Stone: How Rhrap2.4l Controls Both Cell Proliferation And Expansion To Regulate Petal Growth In Rose, Janlo M. Robil
Two Birds With One Stone: How Rhrap2.4l Controls Both Cell Proliferation And Expansion To Regulate Petal Growth In Rose, Janlo M. Robil
Biology Faculty Publications
No abstract provided.
A Dog's Life: Early Life Histories Influence Methylation Of Glucocorticoid (Nr3c1) And Oxytocin (Oxtr) Receptor Genes, Cortisol Levels, And Attachment Styles, Samantha L. Awalt, Lidia Boghean, David Klinkebiel, Rosemary Strasser
A Dog's Life: Early Life Histories Influence Methylation Of Glucocorticoid (Nr3c1) And Oxytocin (Oxtr) Receptor Genes, Cortisol Levels, And Attachment Styles, Samantha L. Awalt, Lidia Boghean, David Klinkebiel, Rosemary Strasser
Biology Faculty Publications
Early life deprivation and stress can contribute to life-long, problematic consequences, including epigenetic variations related to behavior and health. Domestic dogs share human environments and social–cognitive traits, making them a promising comparative model to examine developmental plasticity. We examined 47 owner–dog dyads, including dogs rescued from abusive or neglectful environments, and matched control dogs for changes in DNA methylation of glucocorticoid (NR3C1) and oxytocin (OXTR) receptor genes previously shown to be affected by early life stress in other species including humans. We used an attachment paradigm, which included a separation event to examine cortisol levels and …
Thrust Production And Chordal Flexion Of The Flukes Of Bottlenose Dolphins Performing Tail Stands At Different Efforts, David Kramer, Maura J. Sheehan, Frank E. Fish
Thrust Production And Chordal Flexion Of The Flukes Of Bottlenose Dolphins Performing Tail Stands At Different Efforts, David Kramer, Maura J. Sheehan, Frank E. Fish
Biology Faculty Publications
Dolphins have become famous for their ability to perform a wide variety of athletic and acrobatic behaviors including high-speed swimming, maneuverability, porpoising and tail stands. Tail stands are a behavior where part of the body is held vertically above the water's surface, achieved through thrust produced by horizontal tail fluke oscillations. Strong, efficient propulsors are needed to generate the force required to support the dolphin's body weight, exhibiting chordwise and spanwise flexibility throughout the stroke cycle. To determine how thrust production, fluke flexibility and tail stroke kinematics vary with effort, six adult bottlenose dolphins (Tursiops truncatus) were tested at three …
The Pollen Tube’S Secret To Slick Growth? A Dab Of Pectate Lyase-Like Enzyme, Janlo M. Robil
The Pollen Tube’S Secret To Slick Growth? A Dab Of Pectate Lyase-Like Enzyme, Janlo M. Robil
Biology Faculty Publications
No abstract provided.
The Diversity Of Wolbachia Across The Turtle Ants (Formicidae: Cephalotes Spp.), Corey Reese, Leland C. Graber, Manuela O. Ramalho, Corrie S. Moreau
The Diversity Of Wolbachia Across The Turtle Ants (Formicidae: Cephalotes Spp.), Corey Reese, Leland C. Graber, Manuela O. Ramalho, Corrie S. Moreau
Biology Faculty Publications
Wolbachia is a widespread and well-known bacterium that can induce a wide range of changes within its host. Ants specifically harbor a great deal of Wolbachia diversity and are useful systems to study endosymbiosis. The turtle ants (Cephalotes) are a widespread group of tropical ants that rely on gut microbes to support their herbivorous diet for their survival, yet little is known of the extent of this diversity. Therefore, studying their endosymbionts and categorizing the diversity of bacteria within Cephalotes hosts could help to delimit species and identify new strains and can help lead to a further understanding of how …
Description Of Neoperla Philippinensis Sp. Nov. Confirmed Using Integrative Taxonomy And Some Notes On Neoperla Oculata Banks, 1924 (Plecoptera: Perlidae), Arthien Lovell P. Pelingen
Description Of Neoperla Philippinensis Sp. Nov. Confirmed Using Integrative Taxonomy And Some Notes On Neoperla Oculata Banks, 1924 (Plecoptera: Perlidae), Arthien Lovell P. Pelingen
Biology Faculty Publications
I re-examine the assumed phenotypic variable Neoperla oculata Banks, 1924 (Plecoptera, Perlidae) and describe Neoperla philippinensis sp. nov. All material examined herein are collections from the Mindanao region, of which supplementary information were provided including COI mtDNA accessions, female adult associations, and egg morphology characterization.
Wildflower Of The Year, White Turtlehead (Chelone Glabra), W. John Hayden
Wildflower Of The Year, White Turtlehead (Chelone Glabra), W. John Hayden
Biology Faculty Publications
White Turtlehead is a perennial herb rising from a rhizomatous rootstock.
Whatever Happened To The Snapdragon Family?, W. John Hayden
Whatever Happened To The Snapdragon Family?, W. John Hayden
Biology Faculty Publications
The short answer is DNA sequencing and phylogenetic systematics.
Transient Interactions Modulate The Affinity Of Nf-Κb Transcription Factors For Dna, Tianjie Li, Shandy Shahabi, Tapan Biswas, Oleg V. Tsodikov, Wenfei Pan, De-Bin Huang, Vivien Ya-Fan Wang, Yi Wang, Gourisankar Ghosh
Transient Interactions Modulate The Affinity Of Nf-Κb Transcription Factors For Dna, Tianjie Li, Shandy Shahabi, Tapan Biswas, Oleg V. Tsodikov, Wenfei Pan, De-Bin Huang, Vivien Ya-Fan Wang, Yi Wang, Gourisankar Ghosh
Biology Faculty Publications
The dimeric nuclear factor kappa B (NF- κB) transcription factors (TFs) regulate gene expression by binding to a variety of κB DNA elements with conserved G:C-rich flanking sequences enclosing a degenerate central region. Toward defining mechanistic principles of affinity regulated by degeneracy, we observed an unusual dependence of the affinity of RelA on the identity of the central base pair, which appears to be noncontacted in the complex crystal structures. The affinity of κB sites with A or T at the central position is ~10- fold higher than with G or C. The crystal structures of neither the complexes nor …
Lighting Pathways To Success In Stem: A Virtual Laboratory Meeting Programme (Lamp) Mutually Benefits Mentees And Host Laboratories, Katie E. Lotterhos, Moisés A. Bernal, Megan Phifer-Rixey, Torrie Hanley
Lighting Pathways To Success In Stem: A Virtual Laboratory Meeting Programme (Lamp) Mutually Benefits Mentees And Host Laboratories, Katie E. Lotterhos, Moisés A. Bernal, Megan Phifer-Rixey, Torrie Hanley
Biology Faculty Publications
Developing robust professional networks can help shape the trajectories of early career scientists. Yet, historical inequities in science, technology, engineering, and mathematics (STEM) fields make access to these networks highly variable across academic programmes, and senior academics often have little time for mentoring. Here, we illustrate the success of a virtual Laboratory Meeting Programme (LaMP). In this programme, we matched students (mentees) with a more experienced scientist (mentors) from a research group. The mentees then attended the mentors’ laboratory meetings during the academic year with two laboratory meetings specifically dedicated to the mentee’s professional development. Survey results indicate that mentees …
Restricted Dispersal And Phenotypic Response To Water Depth In A Foundation Seagrass, Erik E. Sotka, Randall Hughes, Torrie Hanley, Cynthia G. Hays
Restricted Dispersal And Phenotypic Response To Water Depth In A Foundation Seagrass, Erik E. Sotka, Randall Hughes, Torrie Hanley, Cynthia G. Hays
Biology Faculty Publications
Species conservation and management benefit from precise understanding of natural patterns of dispersal and genetic variation. Using recent advances in indirect genetic methods applied to both adult plants and dispersed seeds, we find that the mean seed dispersal in a threatened marine foundation plant (the eelgrass Zostera marina) is approximately 100-200 m. This distance is surprisingly more similar to that of wind-dispersed terrestrial seeds (~10s to 100s of meters) than the passive dispersal of marine propagules via currents (~10s to 100s of kilometres). Because nearshore marine plants like Zostera are commonly distributed across strong selective gradients driven by bathymetry (depth) …
Consequences Of Spatial Structure In Soil–Geomorphic Data On The Results Of Machine Learning Models, Daehyun Kim, Insang Song, Lorrayne Miralha, Daniel R. Hirmas, Ryan W. Mcewan, Tom G. Mueller, Pavel Samonil
Consequences Of Spatial Structure In Soil–Geomorphic Data On The Results Of Machine Learning Models, Daehyun Kim, Insang Song, Lorrayne Miralha, Daniel R. Hirmas, Ryan W. Mcewan, Tom G. Mueller, Pavel Samonil
Biology Faculty Publications
In this paper, we examined the degree to which inherent spatial structure in soil properties influences the outcomes of machine learning (ML) approaches to predicting soil spatial variability. We compared the performances of four ML algorithms (support vector machine, artificial neural network, random forest, and random forest for spatial data) against two non-ML algorithms (ordinary least squares regression and spatial filtering regression). None of the ML algorithms produced residuals that had lower mean values or were less autocorrelated over space compared with the non-ML approaches. We recommend the use of random forest when a soil variable of interest is weakly …
Mitochondrial Metabolism In Blood More Reliably Predicts Whole-Animal Energy Needs Compared To Other Tissues, Stefania Casagrande, Maciej Dzialo, Lisa Trost, Kasja Malkoc, Edyta T. Sadowska, Michaela Hau, Barbara J. Pierce, Scott R. Mcwilliams, Ulf Bauchinger
Mitochondrial Metabolism In Blood More Reliably Predicts Whole-Animal Energy Needs Compared To Other Tissues, Stefania Casagrande, Maciej Dzialo, Lisa Trost, Kasja Malkoc, Edyta T. Sadowska, Michaela Hau, Barbara J. Pierce, Scott R. Mcwilliams, Ulf Bauchinger
Biology Faculty Publications
Understanding energy metabolism in free-ranging animals is crucial for ecological studies. In birds, red blood cells (RBCs) offer a minimally invasive method to estimate metabolic rate (MR). In this study with European starlings Sturnus vulgaris, we examined how RBC oxygen consumption relates to oxygen use in key tissues (brain, liver, heart, and pectoral muscle) and versus the whole-organism measured at basal levels. The pectoral muscle accounted for 34-42% of organismal MR, while the heart and liver, despite their high mass-specific metabolic rate, each contributed 2.5-3.0% to organismal MR. Despite its low contribution to organismal MR (0.03-0.04%), RBC MR best predicted …