Matthew Gregory results 207
· Newest (Page 1/9, per page 25)
Author: Matthew Gregory ×Clear All Filters
Search Results
Phylogenetically Diverse Introgression Drives Subtle Population Structure in Pacific RockfishesNARA Subscribed
Genomic methods have shown that admixture and introgression are common across animal taxa. Pacific rockfishes, genus Sebastes , are a group of commercially important species that primarily inhabit inshore, shelf and slope habitats along the North American west coast. Among these, Copper and Quillback Rockfishes are closely related species known to hybridize, particularly within the Salish Sea in North America's Pacific Northwe...
Osteoporosis, characterized by low bone mineral density (BMD) and increased fracture risk, is common yet underdiagnosed in older adults. Medications such as corticosteroids, levothyroxine, and antiepileptic drugs are well-documented contributors to BMD loss. This study examines how long-term use of these medications affects osteoporosis prevalence, specifically focusing on sex and age differences. This retrospective electronic...
High Cost and Low Trust: Insights From Qualitative Commercial Fishing Cost Data in the Northeast United StatesNARA Subscribed
In fisheries management, socioeconomic data, specifically qualitative data analysis, is often underutilized. This study qualitatively analyzed a primary federal data collection effort in the Northeast United States, The Greater Atlantic Region Commercial Fishing Business Cost Survey. This analysis focused on how commercial harvester perceptions of business costs and the industry evolved during 2006–2022. The results show that...
Deceased calf-carrying by female Arctic killer whale suggests species-wide epimeletic behaviorNARA Subscribed
Carrying dead calves is an epimeletic behaviour (caregiving or attentive actions towards injured or dead individuals) documented in several social cetacean species. During focal follows using a drone, we recorded an adult female killer whale ( Orcinus orca ) in the eastern Canadian Arctic carrying a deceased calf by its pectoral fins. Although the calf possessed several injuries, the cause of death was unclear. Similar account...
The increased demand for highly pathogenic avian influenza (HPAI) testing in milk highlights the critical need for well-characterized samples that enable meaningful evaluation of current detection methods. In this study, we focus on the development and rigorous characterization of artificially contaminated spiked milk samples, forming the foundation for reliable assessment of assay performance. By using reverse transcriptase d...
Huron Chipper a Broadly Adapted Chip-Processing Variety with Long-Term Storage Potential and Resistance to Late Blight and Common ScabNARA Subscribed
Huron Chipper is a high yielding round white chip-processing variety with resistance to late blight ( Phytophthora infestans ) and tolerance to common scab ( Streptomyces scabies ). Selected from a cross between the Michigan State University breeding lines MSQ070-1 and MSR156-7, it was designated MSW485-2 during its initial evaluation and development. Huron Chipper is high yielding and broadly adapted, showing equal or better...
Interpretable deep learning reveals spatiotemporal MRI features of brain aging that align with neurodegenerationNARA Subscribed
Cortical thinning and atrophy are hallmarks of brain aging that have been characterized using magnetic resonance imaging (MRI). Brain aging involves many neuroanatomic features whose effects on brain structure remain unexplored. To address this challenge, we trained interpretable deep neural networks (DNNs) to estimate brain age (BA) from T 1 -weighted ( T 1 w) MRI. By identifying MRI features unapparent to humans, DNNs can fi...
Distributed optical fibre sensing (DOFS) is a technology that enables continuous, real-time measurements of a range of environmental parameters along the length of a fibre optic cable. In this article, we review the recently emerged applications of DOFS techniques in physical oceanography and offer a perspective on the technology's potential for future growth within the field. The introduction of DOFS to physical oceanography...
Mapping the Distribution and Conservation Status of Mature and Old Growth Forests Across Coastal Alaska and British ColumbiaNARA Subscribed
Old growth forests in coastal Alaska and British Columbia represent some of the most expansive temperate rainforests on Earth, supporting high biodiversity, substantial carbon stocks, and the cultural heritage of Indigenous communities. Despite their importance, spatially consistent information on the distribution of old growth and mature forests in this region remains limited. We addressed this gap by integrating data across...
Alzheimer’s disease (AD) disproportionately affects women and carriers of the apolipoprotein E ε4 allele (APOE4), yet little is known about how sex and APOE interact to influence white matter (WM) integrity during disease progression. We integrated diffusion MRI and matched blood transcriptomic data to investigate these interactions and their underlying biological mechanisms. WM microstructure was quantified using diffusion te...
Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened Species by assessing the vulnerability of 256 marine megafauna species to 23 at‐sea threat...
Central blood pressure and arterial stiffness among ultramarathon runners across the lifespanNARA Subscribed
Aim Regular exercise is beneficial, but more exercise may not always benefit cardiovascular health (extreme exercise hypothesis). This is concerning, because ultramarathon participation is growing, but previous work on cardiovascular health among ultramarathon runners is equivocal. Prior work has not examined this population’s age-related differences in prognostic cardiovascular health metrics. Purpose Measure brachial and cen...
Blackberry, an Attractive Deep Purple Potato Variety with Resistance to Common Scab and Extreme Resistance to Potato Virus YNARA Subscribed
Blackberry is a tablestock variety with uniquely deep purple skin and flesh. The tubers have an attractive, uniform, round shape with common scab resistance and low incidence of internal defects. It also carries the Rysto marker for extreme resistance to potato virus Y. When baked or microwaved, the tuber flesh is a brilliant deep purple with an enjoyable mild taste. It was selected in 2011 from a cross between two breeding li...
Petoskey A High Gravity Chip-Processing Variety with Long-term Storage Potential and Resistance to Common ScabNARA Subscribed
Petoskey is a high specific gravity round white chip-processing potato variety with resistance to common scab ( Streptomyces scabies ). It was selected from a cross between Beacon Chipper and the breeding line MSG227-2, and designated MSV030-4 during the trialling phase of its development. This variety has high yield potential with attractive round, uniform tubers with netted skin. Five years of field testing in Michigan demon...
Mackinaw is a disease resistant round white chip-processing potato with resistance to potato virus Y (PVY), late blight ( Phytophthora infestans ), and tolerance to common scab ( Streptomyces scabies ). Mackinaw also carries the TG689 marker for the H1 resistance gene to golden cyst nematode ( Globodera rostochiensis ) race Ro1. Designated as MSX540-4 during the trialling phase of its development, it was selected from a cross...
In late June 2021, multiple days of record‐breaking heat caused an unprecedented amount of foliage death in the forests of the Pacific Northwest, USA. Portions of tree canopies with healthy green foliage prior to the heat changed to red or orange shortly after the event. The change in foliage color could be readily seen in satellite imagery and was corroborated as foliar death (heat scorch) by aerial surveys and extensive obse...