A5073576021- Animal Behavior and Reproduction
- Amphibian and Reptile Biology
- Animal Vocal Communication and Behavior
- Bat Biology and Ecology Studies
- Neurobiology and Insect Physiology Research
- Plant and animal studies
- Chronic Disease Management Strategies
- Marine animal studies overview
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Evolution and Genetic Dynamics
- Animal Disease Management and Epidemiology
- Respiratory and Cough-Related Research
- Influenza Virus Research Studies
- Blood Coagulation and Thrombosis Mechanisms
- Healthcare Policy and Management
- Orthopedic Surgery and Rehabilitation
- Elbow and Forearm Trauma Treatment
- Species Distribution and Climate Change
- Plant and Biological Electrophysiology Studies
- Turtle Biology and Conservation
- Shoulder Injury and Treatment
- Venous Thromboembolism Diagnosis and Management
- Coagulation, Bradykinin, Polyphosphates, and Angioedema
- COVID-19 epidemiological studies
Boston University
2006-2025
Gettysburg College
2016-2025
Smithsonian Tropical Research Institute
2016-2022
Rochester Institute of Technology
2021
University of Minnesota
2013-2016
Dutchess Community College
2011
Rhode Island Hospital
1988
Brown University
1988
Highly pathogenic avian influenza H5N1 viruses remain a threat to human health, with potential become pandemic agents.This phase III, placebo-controlled, observer-blinded study evaluated the immunogenicity, cross-reactivity, safety, and lot consistency of 2 doses oil-in-water (AS03(A)) adjuvanted A/Indonesia/05/2005 (3.75 μg hemagglutinin antigen) prepandemic candidate vaccine in 4561 adults aged 18-91 years.Humoral antibody responses groups fulfilled US European immunogenicity licensure...
The function and adaptive significance of defensive behaviors depend on the contexts in which they naturally occur. Amplitude properties predator cues are widely used by prey to assess predation risk, yet rarely studied context stimuli relevant decisions nature. Red-eyed treefrog embryos, Agalychnis callidryas, hatch precociously response attacks their arboreal egg clutches snakes wasps. They use vibrations excited during detect predators, but wind rainstorms also excite intense vibrations....
Although males often display from mixed-species aggregations, the influence of nearby heterospecifics on risks associated with sexual signalling has not been previously examined. We tested whether predation and parasitism depend proximity to heterospecific signallers. Using field playback experiments calls two species that same ponds, túngara frogs hourglass treefrogs, we hypotheses: (1) calling near signallers attractive eavesdroppers results in increased attention predatory bats parasitic...
SUMMARY The embryos of red-eyed treefrogs, Agalychnis callidryas, use vibrations transmitted through their arboreal egg clutch to cue escape hatching behavior when attacked by egg-eating snakes. Hatching early increases the risk predation in water, so should avoid it unless they are danger. We exposed clutches intermittent with different combinations vibration duration and spacing examine role simple temporal pattern cues response. Stimuli were bursts synthetic white noise from 0 100 Hz,...
Prey assessing risk may miss cues and fail to defend themselves, or respond unnecessarily false alarms. Error rates can be ameliorated with more information, but sampling predator entails risk. Red-eyed treefrogs have arboreal eggs aquatic tadpoles. The embryos use vibrations in snake attacks cue behaviorally mediated premature hatching, escape, from benign sources rarely induce hatching. Missed alarms are costly; that hatch eaten hatching prematurely increases predation by predators....
Incidental acoustic and vibrational cues generated by predators are a potential source of information for prey assessing risk. Substrate vibrations should be excited most predators, frequency, amplitude or temporal properties could allow to distinguish predator from benign-source vibrations. Red-eyed treefrog embryos detect egg using during attacks, hatching rapidly prematurely escape. We recorded in clutches attacks five species three common types benign physical disturbance. analyzed their...
Background: The data on cost savings with disease management (DM) in chronic obstructive pulmonary (COPD) is limited. A multicomponent DM program COPD has recently shown a large randomized controlled trial to reduce hospitalizations and emergency department visits compared usual care (UC). objectives of this study were determine the implementing its impact healthcare resource utilization costs UC high-risk patients. Materials Methods: This was post-hoc economic analysis multicenter...
The authors observed a patient with severe inflammatory bowel disease (IBD) complicated by ten episodes of deep venous thrombosis (DVT). Her unusual thrombotic tendency prompted further investigation for primary hypercoagulability. A nonfamilial deficiency Protein S was documented suggesting the acquired. This occurrence suggests that low levels should be considered as potential etiologic factor in patients IBD and recurrent DVT.
The design of anesthetic protocols for frogs is commonly hindered by lack information. Results from fishes and rodents do not always apply to frogs, the literature in anurans concentrated on a few species. We report response treefrogs (Hyla chrysoscelis H. versicolor) tricaine methanesulfonate. Body mass did differ significantly between species or sexes. In first exposure frog TMS, variation induction time was best explained (H. resisted longer) body (larger animals longer). Multiple...
The study of tradeoffs between the attraction mates and eavesdropping predators parasites has generally focused on a single species prey, signaling in isolation. In nature however, animals often signal from mixed-species aggregations, where interactions with heterospecific group members may be an important mechanism modulating sexual natural selection, thus driving evolution. Although studies have shown that conspecific signalers can influence eavesdropper pressure mating signals, effects...
The function and adaptive significance of defensive behaviors depend on the contexts in which they naturally occur. Amplitude properties predator cues are widely used by prey to assess predation risk, yet rarely studied context stimuli relevant decisions nature. Red–eyed treefrog embryos, Agalychnis callidryas , hatch precociously response attacks their arboreal egg clutches snakes wasps. They use vibrations excited during detect predators, but wind rainstorms also excite intense vibrations....
Abstract For many frog species that aggregate around ponds or streams, chorus attendance, the percentage of time nights a given male is present and actively calling at an aggregation, strongest documented predictor inter‐male variation in reproductive success wild. Males are, thus, thought to compete via endurance rivalry, where available energetic reserves individual physiology interact determine tenure. Frogs often exhibit territorial behavior within these aggregations, status likely...
ABSTRACT Airborne sound signals function as key mediators of mate-choice, aggression and other social interactions in a wide range vertebrate invertebrate animals. Calling animals produce more than sound, however. When displaying on or near solid substrate, such vegetation soil, they also unavoidably excite substrate vibrations because the physics production acoustic propagation, these can propagate to receivers. Despite their ubiquity, vibrational signal components have received very little...
Red-eyed treefrogs form dense mating aggregations and lay eggs in vegetation over neotropical ponds. Seismic information serves two important behavioral roles for this species. Adult males communicate with seismic signals during agonistic interactions, embryos detect predators using vibrational cues. Males defending calling sites rapidly extend contract their hindlimbs, shaking bodies the plant tremulatory displays. This generates strong stereotyped substrate vibrations (12±0.4 Hz, constant...
The properties of cues from predators often overlap with background stimuli. Thus, prey may make two errors when assessing risk. They miss and fail to defend themselves, or respond unnecessarily false alarms. Although the incidence these trades off, total error rates can be reduced only by adding information, either through increased sampling one property more cue properties. Adding likely increases processing requirements, predator entails We examined a vibration-cued defense arboreal...
Red-eyed treefrogs, Agalychnis callidryas, lay gelatinous egg masses on vegetation overhanging ponds; tadpoles fall into the water upon hatching. Embryos hatch up to 30% prematurely in attacks by egg-eating snakes, but not other intense benign disturbances, such as storms. We used modal analysis and vibration recordings from clutches natural disturbances characterize vibrational environment of embryos, playbacks assess if vibrations cue hatching, how characteristics affect hatching behavior....