M.R. Allen results 329
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Comparative migration success of Atlantic salmon smolts through three large natural lakesNARA Subscribed
Migration through standing waterbodies can be challenging for Atlantic salmon smolts and has often been associated with delay, disorientation and elevated mortality rates. Despite the large number of watersheds featuring stillwaters, data on smolt migration through lakes are relatively limited, particularly in relation to large natural lakes. The current study investigated movements of Salmo salar smolts on seven tributaries a...
An experimental approach to assess the combined effects of multiple stressors on a large vertebrate speciesNARA Subscribed
The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure. The population of bottlenose dolphins in Barataria Bay, Louisiana, experienced long...
Understanding how demographic dynamics interact with environmental heterogeneity is central to explaining patterns of genomic variation in the marine realm. Indo‐Pacific bottlenose dolphins ( Tursiops aduncus ) occur along most of the Australian coastline, from tropical to temperate waters, encompassing pronounced differences in temperature, salinity, chlorophyll‐a concentration and ocean currents. Using whole‐genome sequencin...
Industrial Pollution and Health in Louisiana: A Systematic Review of Quantitative and Qualitative StudiesNARA Subscribed
Purpose of Review Louisiana has one of the largest concentrations of petrochemical industry in the USA. Many studies have assessed patterns of industrial pollution and health in Louisiana; we aim to systematically review this evidence. We systematically searched PubMed, Web of Science, Embase, APA PsycInfo, and GreenFILE for peer-reviewed papers published 1999–2024 that reported geographical variation in health or industrial p...
Acoustic telemetry reveals high site fidelity of yellow‐phase American eels Anguilla rostrata in a large riverNARA Subscribed
Movement patterns and habitat use of yellow‐phase American eels Anguilla rostrata in the Wolastoq/Saint John River were examined using acoustic telemetry. Tracking 72 tagged yellow‐phase eels from late summer 2021 to autumn 2023 revealed overall restricted longitudinal movements (mean linear range ± standard deviation [SD] 6.4 ± 10.9 km) and high site fidelity. However, two eels exhibited small‐scale (20–25 km) seasonal moveme...
SNAPSHOT USA 2024: Year 6 of the Coordinated National Camera Trap Survey of the United StatesNARA Subscribed
Motivation SNAPSHOT USA is an annual, multi‐contributor camera trap survey of mammals across the United States. The growing SNAPSHOT USA dataset is intended for tracking the spatial and temporal responses of mammal populations to changes in land use, land cover and climate. These data will be useful for exploring the drivers of spatial and temporal changes in relative abundance and distribution, as well as the impacts of speci...
IND-enabling preclinical studies of [11C]COU, a trapped metabolite PET radiotracer for monoamine oxidase-BNARA Subscribed
[ 11 C]COU is a trapped metabolite radiotracer for in vivo analysis of Monoamine Oxidase B activity using positron emission tomography (PET) imaging. [ 11 C]COU has the potential to quantify astrocytosis in the early stages of Alzheimer’s disease, providing an earlier marker of disease than currently available for staging disease progression. Prior preclinical studies have demonstrated the efficacy of this radiotracer in precl...
Advances in genomic sequencing have magnified our understanding of ecological and evolutionary mechanisms relevant to biodiversity conservation. As a result, the field of conservation genomics has grown rapidly. Genomic data can be effective in guiding conservation decisions by revealing fine‐scale patterns of genetic diversity and adaptation. Adaptive potential, sometimes referred to as evolutionary potential, is particularly...
Muscle fat infiltration (i.e., myosteatosis) is an important index of muscle health and pathology in disease states, such as chronic liver disease (CLD). However, it is unknown whether myosteatosis differs due to anatomical location. Further, the mechanistic implications of divergent intermuscular adipose tissue (IMAT) deposition remain unknown in patients with CLD. Thirty-three patients with CLD (55.0 ± 10.5 years) and 17 hea...
Bomb radiocarbon in otoliths and eye lenses of reef fishes from Atlantic waters of the southeastern U.S.NARA Subscribed
Reef-associated fishes are integral components of marine ecosystems; many also support recreational, commercial, and subsistence fisheries. The sustainable management of these fisheries requires a detailed region-specific understanding of population age structure so that size and age data of fisheries species can be used to estimate life history parameters. Bomb-produced radiocarbon ( 14 C) records are sparse in the western No...
Several legal acts mandate that management agencies regularly assess biological populations. For species with distinct markings, these assessments can be conducted noninvasively via capture‐recapture and photographic identification (photo‐ID), which involves processing considerable quantities of photographic data. To ease this burden, agencies increasingly rely on automated identification (ID) algorithms. Identification algori...