| evolution of the house finch on santa cruz island, california. | | 1971 | 5557903 |
| role of peridomestic birds in the transmission of st. louis encephalitis virus in southern california. | in response to the 1984 st. louis encephalitis (sle) epidemic in the los angeles basin of southern california (usa), an investigative program was initiated to evaluate the interactive components of the sle virus transmission cycle. from 1987 through 1996 (10 yr), 52,589 birds were bled and their sera tested for sle and western equine encephalomyelitis (wee) virus antibodies by the hemagglutination inhibition (hai) test. eighty-three percent of the birds tested were house finches (carpodacus mexi ... | 2000 | 10682741 |
| experimental infection of california birds with western equine encephalomyelitis and st. louis encephalitis viruses. | a total of 27 bird species from the san joaquin and coachella valleys of california were inoculated subcutaneously with sympatric strains of western equine encephalomyelitis (wee) and st. louis encephalitis (sle) viruses. overall, 133 of 164 birds inoculated with wee virus developed a viremia detected by plaque assay; significantly greater than 72 of 163 birds inoculated with sle virus. host competence was calculated as the average number of days that each avian species had a viremia > or = 2 lo ... | 2003 | 14765678 |
| repeated west nile virus epidemic transmission in kern county, california, 2004-2007. | west nile virus (wnv) has remained epidemic in kern county, ca, since its introduction in 2004 through 2007 when the human case annual incidence increased from 6-8 to 17 per 100,000, respectively. the 2007 increase in human infection was associated with contradicting surveillance indicators, including severe drought, warm spring but cool summer temperature anomalies, decreased rural and urban mosquito abundance but increased early season infection in urban culex quinquefasciatus say, moderate av ... | 2009 | 19198528 |
| mycoplasma sturni from a california house finch with conjunctivitis did not cause disease in experimentally infected house finches. | mycoplasma gallisepticum conjunctivitis emerged in 1994 as a disease of free-ranging house finches (carpodacus mexicanus) in north america and has also been isolated from other songbirds with conjunctivitis. a key feature for the successful study of natural and experimental disease has been the apparent, very-high correlation between characteristic eye lesions and m. gallisepticum. mycoplasma sturni was originally isolated from an adult european starling (sturnus vulgaris) with bilateral conjunc ... | 2010 | 20688712 |
| blood-feeding patterns of the culex pipiens complex in sacramento and yolo counties, california. | mosquitoes in the culex pipiens complex are competent vectors of west nile virus (wnv; family flaviviridae, genus flavivirus) in the laboratory, and field-collected mosquitoes have tested positive for the virus in california and elsewhere. a better understanding of cx. pipiens complex blood-feeding patterns will help define the threat that these mosquitoes pose to human health and their role in wnv amplification in northern california. we collected blood-engorged cx. pipiens complex mosquitoes f ... | 2011 | 21485380 |
| vector-host interactions of culex pipiens complex in northeastern and southwestern usa. | studies on the vector-host interactions of culex pipiens complex mosquitoes by sequencing portions of mitochondrial cytochrome b gene indicate that cx. p. pipiens f. pipiens predominantly feed on avian hosts (93.1%), and focus feeding activity on several key bird species, in particular the american robin, the gray catbird, and the house sparrow in connecticut. however, cx. p. quinquefasciatus indiscriminately feed on both birds and mammals. culex p. quinquefasciatus in harris county - texas and ... | 2012 | 23401953 |
| spatial variation in host feeding patterns of culex tarsalis and the culex pipiens complex (diptera: culicidae) in california. | west nile virus (family flaviviridae, genus flavivirus, wnv) is now endemic in california across a variety of ecological regions that support a wide diversity of potential avian and mammalian host species. because different avian hosts have varying competence for wnv, determining the blood-feeding patterns of culex (diptera: culicidae) vectors is a key component in understanding the maintenance and amplification of the virus as well as tangential transmission to humans and horses. we investigate ... | 0 | 22897051 |
| surveys for antibodies against mosquitoborne encephalitis viruses in california birds, 1996-2013. | from 1996 through 2013, 54,546 individual birds comprising 152 species and 7 orders were banded, bled, and released at four study areas within california, from which 28,388 additional serum samples were collected at one or more recapture encounters. of these, 142, 99, and 1929 birds from 41 species were positive for neutralizing antibodies against western equine encephalomyelitis virus (weev), st. louis encephalitis virus (slev), or west nile virus (wnv) at initial capture or recapture, respecti ... | 2016 | 26974395 |
| west nile virus-related trends in avian mortality in california, usa, 2003-12. | west nile virus (wnv) is an arbovirus transmitted enzootically by culex mosquitoes among avian hosts. since 2000, the california dead bird surveillance program (dbsp) has tracked avian mortality reported by the public on a telephone hotline and website and measured the prevalence of wnv infection in dead birds. we summarize herein wnv prevalence in dead birds tested and variation of wnv transmission over time and space with the use of dbsp data from 2003 to 2012. prevalence among dead birds was ... | 2015 | 25919466 |
| host (avian) biting preference of southern california culex mosquitoes (diptera: culicidae). | the host preference of a vector mosquito species plays a significant role in determining human and animal risk of infection with mosquito-transmitted pathogens. host preferences of common southern california culex species for four bird species, american crow (corvus brachyrhynchos), house sparrow (passer domesticus), house finch (carpodacus mexicanus), and mourning dove (zenaida macroura), were examined by determining the proportion of each mosquito species that successfully engorged on each of ... | 2012 | 22679878 |
| abundance and bloodfeeding patterns of mosquitoes (diptera: culicidae) in an oak woodland on the eastern slope of the northern coast range of california. | the abundance and bloodfeeding patterns of mosquitoes was studied from 2008 to 2010 at an 18 ha. oak woodland in lake county, ca. host-seeking females were collected weekly from sunset to sunrise by paired dry-ice-baited cdc style traps, whereas resting females were aspirated from paired walk-in red boxes. sequences of the coi gene amplified from bloodmeals from engorged resting females were used to identify the bloodmeal hosts. aedes sierrensis (ludlow) and aedes increpitus dyar complex mosquit ... | 2017 | 28874011 |