| [the relationship between mosquito vectors and aquatic birds in the potential transmission of 2 arboviruses]. | the authors studied for two years the role of the chicks of aquatic birds in the arboviral cycles in coastal lagoons in central panama in order to determine the relation between culex (melanoconion) ocossa and mansonia (mansonia) dyari mosquitoes in the transmission and dissemination of the viruses of saint louis encephalitis (sle) and venezuelan equine encephalitis (vee). mosquitoes were captured every fifteen days on two consecutive nights to isolate the virus, using light traps (cdc) and bait ... | 1993 | 8101009 |
| species differences in the sensitivity of avian embryos to methylmercury. | we injected doses of methylmercury into the air cells of eggs of 26 species of birds and examined the dose-response curves of embryo survival. for 23 species we had adequate data to calculate the median lethal concentration (lc(50)). based on the dose-response curves and lc(50)s, we ranked species according to their sensitivity to injected methylmercury. although the previously published embryotoxic threshold of mercury in game farm mallards (anas platyrhynchos) has been used as a default value ... | 2009 | 18421496 |
| field investigations of winter transmission of eastern equine encephalitis virus in florida. | studies investigating winter transmission of eastern equine encephalitis virus (eeev) were conducted in hillsborough county, florida. the virus was detected in culiseta melanura and anopheles quadrimaculatus in february 2012 and 2013, respectively. during the winter months, herons were the most important avian hosts for all mosquito species encountered. in collections carried out in the summer of 2011, blood meals taken from herons were still common, but less frequently encountered than in winte ... | 2014 | 25070997 |
| redescription and phylogenetic relationships of euparyphium capitaneum dietz, 1909, the type-species of euparyphium dietz, 1909 (digenea: echinostomatidae). | euparyphium capitaneum dietz, 1909, the type-species of the genus euparyphium dietz, 1909, is described on the basis of material collected from the type-host anhinga anhinga (l.) from pascagoula river, which drains into the northern coast of the gulf of mexico. combination of light and scanning electron microscopy observations of freshly collected and properly fixed specimens in our study has allowed us to provide novel information on the morphology and topology of the reproductive systems and o ... | 2015 | 25557747 |
| proximate bases of silver color in anhinga (anhinga anhinga) feathers. | colors of living organisms are produced by selective light absorption from pigments and/or by light scattering from highly ordered nanostructures (i.e., structural color). while the physical bases of metallic colors of arthropods and fish are fairly well-known, those of birds are not. here we examine structurally based silver color and its production in feathers of the waterbird species anhinga. this achromatic color is distinguished from grey by high specular reflectance, from white by low diff ... | 2011 | 21755527 |
| biomonitoring environmental contaminants near a municipal solid-waste combustor: a decade later. | during the 1999 nesting season, eggs and nestlings of anhingas (anhinga anhinga) and white ibises (eudocimus albus) were collected from a colony located on the site of a municipal solid-waste (msw) combustor and analyzed for residues of chemicals potentially released from this facility. concentrations of most residues, including tetrachlorodibenzo-p-dioxin (tcdd). tetrachlorodibenzofuran (tcdf), arsenic, beryllium, cadmium and lead, were at levels comparable to those found during a similar surve ... | 2002 | 11843530 |
| biomonitoring environmental contaminants near a municipal solid-waste combustor. | tetrachlorodibenzo-p-dioxin (tcdd), tetrachlorodibenzofuran (tcdf) and selected metal concentrations were measured in eggs and nestlings of anhingas (anhinga anhinga) and white ibises (eudocimus albus) collected from a colony next to a municipal solid-waste (msw) combustor and ash landfill. most of the measured residues, including tcdd, tcdf, arsenic, beryllium, cadmium and nickel, remained at pre-operational levels during the first five years of facility operation. selenium (in anhingas) and me ... | 1997 | 15093437 |
| systematic position of filaria helicina molin, 1858, from the brain cavity of the snakebird, anhinga anhinga. | | 1957 | 13492118 |
| use of margarine for the successful removal of polyisobutylene in an anhinga (anhinga anhinga) and great blue heron (ardea herodias). | two great blue herons (ardea herodias) and an anhinga (anhinga anhinga) were presented to the wildlife center of texas with extensive plumage soiling from polyisobutylene (pib), a synthetic rubber polymer used in manufacturing. all animals were provided supportive care and sedated for evaluation for hematologic and plasma biochemical values; one of the great blue herons was critically ill, based on the diagnostic evaluations and died approximately 24 hours after admission. on postmortem examinat ... | 2020 | 32237685 |