The Experts below are selected from a list of 591 Experts worldwide ranked by ideXlab platform
Christine K. Johnson - One of the best experts on this subject based on the ideXlab platform.
-
RESEARCH ARTICLE Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California
2016Co-Authors: Mary H. Straub, Terra R. Kelly, Bruce A. Rideout, Curtis Eng, Josephine Braun, Christine K. JohnsonAbstract:Throughout the world, populations of scavenger birds are declining rapidly with some popu-lations already on the brink of extinction. Much of the current research into the factors con-tributing to these declines has focused on exposure to drug residues, lead, and other toxins. Despite increased monitoring of these declining populations, little is known about infectious diseases affecting scavenger bird species. To assess potential infectious disease risks to both obligate and facultative scavenger bird species, we performed a serosurvey for eleven potential pathogens in three species of scavenging birds in California: the California condor (Gymnogyps californianus), Turkey Vulture (Cathartes aura) and golden eagle (Aquila chry-saetos). California condors were seropositive for avian adenovirus, infectious bronchitis virus,Mycoplasma gallisepticum, avian paramyxovirus-2, West Nile virus (WNV) and Toxo-plasma gondii. Golden eagles were seropositive for avian adenovirus, Chlamydophila psit-taci and Toxoplasma gondii, and Turkey Vultures were seropositive for avian adenovirus, Chlamydophila psittaci, avian paramyxovirus-1, Toxoplasma gondii and WNV. Risk factor analyses indicated that rearing site and original release location were significantly associ
-
Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California
PloS one, 2015Co-Authors: Mary H. Straub, Terra R. Kelly, Bruce A. Rideout, Janna Wynne, Curtis Eng, Josephine Braun, Christine K. JohnsonAbstract:Throughout the world, populations of scavenger birds are declining rapidly with some populations already on the brink of extinction. Much of the current research into the factors contributing to these declines has focused on exposure to drug residues, lead, and other toxins. Despite increased monitoring of these declining populations, little is known about infectious diseases affecting scavenger bird species. To assess potential infectious disease risks to both obligate and facultative scavenger bird species, we performed a serosurvey for eleven potential pathogens in three species of scavenging birds in California: the California condor (Gymnogyps californianus), Turkey Vulture (Cathartes aura) and golden eagle (Aquila chrysaetos). California condors were seropositive for avian adenovirus, infectious bronchitis virus, Mycoplasma gallisepticum, avian paramyxovirus-2, West Nile virus (WNV) and Toxoplasma gondii. Golden eagles were seropositive for avian adenovirus, Chlamydophila psittaci and Toxoplasma gondii, and Turkey Vultures were seropositive for avian adenovirus, Chlamydophila psittaci, avian paramyxovirus-1, Toxoplasma gondii and WNV. Risk factor analyses indicated that rearing site and original release location were significantly associated with a positive serologic titer to WNV among free-flying condors. This study provides preliminary baseline data on infectious disease exposure in these populations for aiding in early disease detection and provides potentially critical information for conservation of the endangered California condor as it continues to expand its range and encounter new infectious disease threats.
David Brandes - One of the best experts on this subject based on the ideXlab platform.
-
environmental drivers of variability in the movement ecology of Turkey Vultures cathartes aura in north and south america
Philosophical Transactions of the Royal Society B, 2014Co-Authors: Somayeh Dodge, Gil Bohrer, Keith L Bildstein, Sarah C Davidson, Rolf Weinzierl, Marc J Bechard, David R Barber, Roland Kays, David BrandesAbstract:Variation is key to the adaptability of species and their ability to survive changes to the Earth's climate and habitats. Plasticity in movement strategies allows a species to better track spatial dynamics of habitat quality. We describe the mechanisms that shape the movement of a long-distance migrant bird (Turkey Vulture, Cathartes aura) across two continents using satellite tracking coupled with remote-sensing science. Using nearly 10 years of data from 24 satellite-tracked Vultures in four distinct populations, we describe an enormous amount of variation in their movement patterns. We related Vulture movement to environmental conditions and found important correlations explaining how far they need to move to find food (indexed by the Normalized Difference Vegetation Index) and how fast they can move based on the prevalence of thermals and temperature. We conclude that the extensive variability in the movement ecology of Turkey Vultures, facilitated by their energetically efficient thermal soaring, suggests that this species is likely to do well across periods of modest climate change. The large scale and sample sizes needed for such analysis in a widespread migrant emphasizes the need for integrated and collaborative efforts to obtain tracking data and for policies, tools and open datasets to encourage such collaborations and data sharing.
-
estimating updraft velocity components over large spatial scales contrasting migration strategies of golden eagles and Turkey Vultures
Ecology Letters, 2012Co-Authors: Gil Bohrer, David Brandes, James T Mandel, Keith L Bildstein, Tricia A Miller, Michael Lanzone, Todd E Katzner, Charles Maisonneuve, Junior A TremblayAbstract:Soaring birds migrate in massive numbers worldwide. These migrations are complex and dynamic phenomena, strongly influenced by meteorological conditions that produce thermal and orographic uplift as the birds traverse the landscape. Herein we report on how methods were developed to estimate the strength of thermal and orographic uplift using publicly available digital weather and topography datasets at continental scale. We apply these methods to contrast flight strategies of two morphologically similar but behaviourally different species: golden eagle, Aquila chrysaetos, and Turkey Vulture, Cathartes aura, during autumn migration across eastern North America tracked using GPS tags. We show that Turkey Vultures nearly exclusively used thermal lift, whereas golden eagles primarily use orographic lift during migration. It has not been shown previously that migration tracks are affected by species-specific specialisation to a particular uplift mode. The methods introduced herein to estimate uplift components and test for differences in weather use can be applied to study movement of any soaring species.
Mary H. Straub - One of the best experts on this subject based on the ideXlab platform.
-
RESEARCH ARTICLE Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California
2016Co-Authors: Mary H. Straub, Terra R. Kelly, Bruce A. Rideout, Curtis Eng, Josephine Braun, Christine K. JohnsonAbstract:Throughout the world, populations of scavenger birds are declining rapidly with some popu-lations already on the brink of extinction. Much of the current research into the factors con-tributing to these declines has focused on exposure to drug residues, lead, and other toxins. Despite increased monitoring of these declining populations, little is known about infectious diseases affecting scavenger bird species. To assess potential infectious disease risks to both obligate and facultative scavenger bird species, we performed a serosurvey for eleven potential pathogens in three species of scavenging birds in California: the California condor (Gymnogyps californianus), Turkey Vulture (Cathartes aura) and golden eagle (Aquila chry-saetos). California condors were seropositive for avian adenovirus, infectious bronchitis virus,Mycoplasma gallisepticum, avian paramyxovirus-2, West Nile virus (WNV) and Toxo-plasma gondii. Golden eagles were seropositive for avian adenovirus, Chlamydophila psit-taci and Toxoplasma gondii, and Turkey Vultures were seropositive for avian adenovirus, Chlamydophila psittaci, avian paramyxovirus-1, Toxoplasma gondii and WNV. Risk factor analyses indicated that rearing site and original release location were significantly associ
-
Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California
PloS one, 2015Co-Authors: Mary H. Straub, Terra R. Kelly, Bruce A. Rideout, Janna Wynne, Curtis Eng, Josephine Braun, Christine K. JohnsonAbstract:Throughout the world, populations of scavenger birds are declining rapidly with some populations already on the brink of extinction. Much of the current research into the factors contributing to these declines has focused on exposure to drug residues, lead, and other toxins. Despite increased monitoring of these declining populations, little is known about infectious diseases affecting scavenger bird species. To assess potential infectious disease risks to both obligate and facultative scavenger bird species, we performed a serosurvey for eleven potential pathogens in three species of scavenging birds in California: the California condor (Gymnogyps californianus), Turkey Vulture (Cathartes aura) and golden eagle (Aquila chrysaetos). California condors were seropositive for avian adenovirus, infectious bronchitis virus, Mycoplasma gallisepticum, avian paramyxovirus-2, West Nile virus (WNV) and Toxoplasma gondii. Golden eagles were seropositive for avian adenovirus, Chlamydophila psittaci and Toxoplasma gondii, and Turkey Vultures were seropositive for avian adenovirus, Chlamydophila psittaci, avian paramyxovirus-1, Toxoplasma gondii and WNV. Risk factor analyses indicated that rearing site and original release location were significantly associated with a positive serologic titer to WNV among free-flying condors. This study provides preliminary baseline data on infectious disease exposure in these populations for aiding in early disease detection and provides potentially critical information for conservation of the endangered California condor as it continues to expand its range and encounter new infectious disease threats.
Terra R. Kelly - One of the best experts on this subject based on the ideXlab platform.
-
RESEARCH ARTICLE Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California
2016Co-Authors: Mary H. Straub, Terra R. Kelly, Bruce A. Rideout, Curtis Eng, Josephine Braun, Christine K. JohnsonAbstract:Throughout the world, populations of scavenger birds are declining rapidly with some popu-lations already on the brink of extinction. Much of the current research into the factors con-tributing to these declines has focused on exposure to drug residues, lead, and other toxins. Despite increased monitoring of these declining populations, little is known about infectious diseases affecting scavenger bird species. To assess potential infectious disease risks to both obligate and facultative scavenger bird species, we performed a serosurvey for eleven potential pathogens in three species of scavenging birds in California: the California condor (Gymnogyps californianus), Turkey Vulture (Cathartes aura) and golden eagle (Aquila chry-saetos). California condors were seropositive for avian adenovirus, infectious bronchitis virus,Mycoplasma gallisepticum, avian paramyxovirus-2, West Nile virus (WNV) and Toxo-plasma gondii. Golden eagles were seropositive for avian adenovirus, Chlamydophila psit-taci and Toxoplasma gondii, and Turkey Vultures were seropositive for avian adenovirus, Chlamydophila psittaci, avian paramyxovirus-1, Toxoplasma gondii and WNV. Risk factor analyses indicated that rearing site and original release location were significantly associ
-
Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California
PloS one, 2015Co-Authors: Mary H. Straub, Terra R. Kelly, Bruce A. Rideout, Janna Wynne, Curtis Eng, Josephine Braun, Christine K. JohnsonAbstract:Throughout the world, populations of scavenger birds are declining rapidly with some populations already on the brink of extinction. Much of the current research into the factors contributing to these declines has focused on exposure to drug residues, lead, and other toxins. Despite increased monitoring of these declining populations, little is known about infectious diseases affecting scavenger bird species. To assess potential infectious disease risks to both obligate and facultative scavenger bird species, we performed a serosurvey for eleven potential pathogens in three species of scavenging birds in California: the California condor (Gymnogyps californianus), Turkey Vulture (Cathartes aura) and golden eagle (Aquila chrysaetos). California condors were seropositive for avian adenovirus, infectious bronchitis virus, Mycoplasma gallisepticum, avian paramyxovirus-2, West Nile virus (WNV) and Toxoplasma gondii. Golden eagles were seropositive for avian adenovirus, Chlamydophila psittaci and Toxoplasma gondii, and Turkey Vultures were seropositive for avian adenovirus, Chlamydophila psittaci, avian paramyxovirus-1, Toxoplasma gondii and WNV. Risk factor analyses indicated that rearing site and original release location were significantly associated with a positive serologic titer to WNV among free-flying condors. This study provides preliminary baseline data on infectious disease exposure in these populations for aiding in early disease detection and provides potentially critical information for conservation of the endangered California condor as it continues to expand its range and encounter new infectious disease threats.
Bruce A. Rideout - One of the best experts on this subject based on the ideXlab platform.
-
RESEARCH ARTICLE Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California
2016Co-Authors: Mary H. Straub, Terra R. Kelly, Bruce A. Rideout, Curtis Eng, Josephine Braun, Christine K. JohnsonAbstract:Throughout the world, populations of scavenger birds are declining rapidly with some popu-lations already on the brink of extinction. Much of the current research into the factors con-tributing to these declines has focused on exposure to drug residues, lead, and other toxins. Despite increased monitoring of these declining populations, little is known about infectious diseases affecting scavenger bird species. To assess potential infectious disease risks to both obligate and facultative scavenger bird species, we performed a serosurvey for eleven potential pathogens in three species of scavenging birds in California: the California condor (Gymnogyps californianus), Turkey Vulture (Cathartes aura) and golden eagle (Aquila chry-saetos). California condors were seropositive for avian adenovirus, infectious bronchitis virus,Mycoplasma gallisepticum, avian paramyxovirus-2, West Nile virus (WNV) and Toxo-plasma gondii. Golden eagles were seropositive for avian adenovirus, Chlamydophila psit-taci and Toxoplasma gondii, and Turkey Vultures were seropositive for avian adenovirus, Chlamydophila psittaci, avian paramyxovirus-1, Toxoplasma gondii and WNV. Risk factor analyses indicated that rearing site and original release location were significantly associ
-
Seroepidemiologic Survey of Potential Pathogens in Obligate and Facultative Scavenging Avian Species in California
PloS one, 2015Co-Authors: Mary H. Straub, Terra R. Kelly, Bruce A. Rideout, Janna Wynne, Curtis Eng, Josephine Braun, Christine K. JohnsonAbstract:Throughout the world, populations of scavenger birds are declining rapidly with some populations already on the brink of extinction. Much of the current research into the factors contributing to these declines has focused on exposure to drug residues, lead, and other toxins. Despite increased monitoring of these declining populations, little is known about infectious diseases affecting scavenger bird species. To assess potential infectious disease risks to both obligate and facultative scavenger bird species, we performed a serosurvey for eleven potential pathogens in three species of scavenging birds in California: the California condor (Gymnogyps californianus), Turkey Vulture (Cathartes aura) and golden eagle (Aquila chrysaetos). California condors were seropositive for avian adenovirus, infectious bronchitis virus, Mycoplasma gallisepticum, avian paramyxovirus-2, West Nile virus (WNV) and Toxoplasma gondii. Golden eagles were seropositive for avian adenovirus, Chlamydophila psittaci and Toxoplasma gondii, and Turkey Vultures were seropositive for avian adenovirus, Chlamydophila psittaci, avian paramyxovirus-1, Toxoplasma gondii and WNV. Risk factor analyses indicated that rearing site and original release location were significantly associated with a positive serologic titer to WNV among free-flying condors. This study provides preliminary baseline data on infectious disease exposure in these populations for aiding in early disease detection and provides potentially critical information for conservation of the endangered California condor as it continues to expand its range and encounter new infectious disease threats.
