| comparative chromosome painting between chicken and spectacled owl (pulsatrix perspicillata): implications for chromosomal evolution in the strigidae (aves, strigiformes). | the spectacled owl (pulsatrix perspicillata), a species found in the neotropical region, has 76 chromosomes, with a high number of biarmed chromosomes. in order to define homologies between gallus gallus and pulsatrixperspicillata (strigiformes, strigidae), we used chromosome painting with chicken dna probes of chromosomes 1-10 and z and telomeric sequences. this approach allowed a comparison between pulsatrixperspicillata and other species of strigidae already analyzed by chromosome painting (s ... | 2008 | 19096211 |
| widespread usutu virus outbreak in birds in the netherlands, 2016. | we report a widespread usutu virus outbreak in birds in the netherlands. viral presence had been detected through targeted surveillance as early as april 2016 and increased mortality in common blackbirds and captive great grey owls was noticed from august 2016 onwards. usutu virus infection was confirmed by post-mortem examination and rt-pcr. extensive usutu virus activity in the netherlands in 2016 underlines the need to monitor mosquito activity and mosquito-borne infections in 2017 and beyond ... | 0 | 27918257 |
| evidence for an independent third usutu virus introduction into germany. | usutu virus (usuv) is an arbovirus within the genus flavivirus, which was first introduced to southern europe approximately twenty years ago causing epizootics among wild and captive birds. in germany usuv was initially discovered in wild birds, mainly common blackbirds (turdus merula), in the upper rhine valley in southwest of the country in 2011 and has not spread much northwards since. phylogenetic analyses revealed that the still ongoing usuv epidemic is caused by two different usuv strains, ... | 2016 | 27527765 |
| epidemiology of usutu virus: the european scenario. | usutu virus (usuv) is an emerging arbovirus isolated in 1959 (usutu river, swaziland). previously restricted to sub-saharan africa, the virus was introduced in europe in 1996. while the usuv has received little attention in africa, the virus emergence has prompted numerous studies with robust epidemiological surveillance programs in europe. the natural transmission cycle of usuv involves mosquitoes (vectors) and birds (amplifying hosts) with humans and other mammals considered incidental ("dead- ... | 2020 | 32858963 |
| did climate determine late pleistocene settlement dynamics in the ach valley, sw germany? | the loss of neanderthal groups across western and central europe during oxygen isotope stage (ois) 3 has held the attention of archaeologists for decades. the role that climatic change, genetic interbreeding, and interspecies competition played in the extinction of neanderthal groups is still debated. hohle fels is one of several important middle and upper paleolithic sites from the ach valley in southwestern germany which documents the presence of neanderthals and modern humans in the region. c ... | 2019 | 31048924 |
| clinical findings, lesions, and viral antigen distribution in great gray owls (strix nebulosa) and barred owls (strix varia) with spontaneous west nile virus infection. | west nile virus (wnv) infection manifests itself clinically a nd pathologically differently in various species of birds. the clinicopathologic findings and wnv antigen tissue distribution of six great gray owls (strix nebulosa) and two barred owls (strix varia) with wnv infection are described in this report. great gray owls usually live in northern canada, whereas the phylogenetically related barred owls are native to the midwestern and eastern united states and southern canada. naturally acqui ... | 2007 | 17461282 |
| genetic characterization of a neurovirulent west nile virus variant associated with a fatal great grey owl infection. | this study reports on a fatal case of a captive great grey owl infected with the west nile virus (wnv) in the zoological garden košice, eastern slovakia (central europe). the tissue samples of the dead owl were used for virus isolation and genetic characterization. the novel isolate is genetically closer to hungarian, greek, and bulgarian strains from the central/southern european clade of lineage 2 than to the strains previously isolated in slovakia. interestingly, it carries ns3-249p, a molecu ... | 2021 | 33920598 |
| haemosporidian parasites from captive strigiformes in france. | haemosporidia infections may cause major damage to avian populations and represent a concern for veterinarians working in zoological parks or wildlife rescue centres. following the fatal infection of 9 great grey owls (strix nebulosa) at mulhouse zoological park, between summer 2013 and 2015, a prospective epidemiological investigation was performed in captive strigiform birds in france in 2016. the purpose was to evaluate the prevalence of haemosporidian parasites in captive strigiformes and to ... | 2020 | 32683557 |
| resurrection of the genus eumonospora (apicomplexa: sarcocystidae) for caryospora species without stieda body. | the coccidian genus eumonospora allen, 1933 is re-established. despite morphological features and host preference among species, coccidian with octasporozoic and monosporocystic oocysts are traditionally consider to belonging in the genus caryospora léger, 1904 (apicomplexa: eimeriidae). recently, the genus avispora schuster et al., 2016 was proposed for above caryosporoids parasitizing birds based on combined morphological and phylogenetic analyses. however, diagnostic morphological characters ... | 2020 | 32147506 |
| west nile virus epizootic in germany, 2018. | the summer of 2018 in germany was the second hottest and driest on record. these generally extremely favorable climatic conditions most likely triggered the further expansion and the efficient propagation of the zoonotic arthropod-borne west nile virus in many southern/southeastern and even central european countries. wnv infections were detected for the first time in resident wild and aviary birds, such as common blackbirds, northern goshawks and great grey owls in eastern and southeastern germ ... | 2019 | 30550796 |
| range-wide genetic differentiation among north american great gray owls (strix nebulosa) reveals a distinct lineage restricted to the sierra nevada, california. | investigations of regional genetic differentiation are essential for describing phylogeographic patterns and informing management efforts for species of conservation concern. in this context, we investigated genetic diversity and evolutionary relationships among great gray owl (strix nebulosa) populations in western north america, which includes an allopatric range in the southern sierra nevada in california. based on a total dataset consisting of 30 nuclear microsatellite dna loci and 1938-base ... | 2010 | 20193768 |
| a new framework for spatio-temporal climate change impact assessment for terrestrial wildlife. | we describe a first step framework for climate change species' impact assessments that produces spatially and temporally heterogeneous models of climate impacts. case study results are provided for great gray owl (strix nebulosa) in idaho as an example of framework application. this framework applies species-specific sensitivity weights to spatial and seasonal models of climate exposure to produce spatial and seasonal models of climate impact. we also evaluated three methods of calculating sensi ... | 2015 | 26164841 |
| exogenous stages of eimeria bemricki n. sp. (apicomplexa: eimeriidae) from the great gray owl, strix nebulosa (foster). | exogenous stages of a new species of eimeria are described from feces of a captive great gray owl, strix nebulosa, held at the gabbert raptor center, university of minnesota, st. paul, minnesota. oocysts (n = 100) of eimeria bemricki are spherical to subspherical, 19.2 x 19.0 (21.5-16.0 x 21.0-16.0) microm, with ovoidal sporocysts (n = 100), 10.0 x 6.5 (12.0-7.0 x 7.0-5.5) microm and sporozoites (n = 20), 8.2 x 3.2 (6.8-10.1 x 2.5-3.9) microm. stieda bodies, substieda bodies, polar bodies, and s ... | 1998 | 9794640 |
| ophthalmic reference values and lesions in two captive populations of northern owls: great grey owls (strix nebulosa) and snowy owls (bubo scandiacus). | this study established ophthalmic reference values and characterized ocular lesions in two captive populations of boreal owls, including 46 eyes of 23 great grey owls (strix nebulosa) and 38 eyes from 19 snowy owls (bubo scandiacus). a complete ophthalmologic exam was conducted, including neuro-ophthalmic reflexes, schirmer tear test i (stt-i), intraocular pressure (iop) using rebound tonometry, fluorescein staining, horizontal corneal measurements using jameson calipers, direct and indirect oph ... | 2016 | 27010284 |
| dna barcoding as a tool for elucidating species delineation in wide-ranging species as illustrated by owls (tytonidae and strigidae). | the mitochondrial cytochrome c-oxidase subunit i (cox1) can serve as a fast and accurate marker for the identification of animal species, and for the discovery of new species across the tree of life. distinguishing species using this universal molecular marker, a technique known as dna barcoding, relies on the identifying the gap between intra- and interspecific divergence. one of the difficulties could be wide-ranging, cosmopolitan species that show large amounts of morphological variation. the ... | 2013 | 24199866 |