| within-and among-clutch variation of organochlorine residues in eggs of black-crowned night-herons. | within-clutch variability of dde and pcb residues in eggs from 62 clutches of black-crowned night-herons (nycticorax nycticorax) was small (12% and 17%) compared to among-clutch variability (88% and 83%). significant correlations between concentrations of dde (median r=0.8885) and of pcbs (median r=0.8244) occurred when 501 correlations were run on two randomly selected eggs from within the same clutch; no significant correlation occurred for either concentrations of dde (median r=0.0353) or pcb ... | 1990 | 24243430 |
| heavy metal residues in prefledgling black-crowned night-herons from three atlantic coast colonies. | | 1983 | 6839043 |
| mapping the potential distributions of etiological agent, vectors, and reservoirs of japanese encephalitis in asia and australia. | japanese encephalitis virus (jev) is a substantial cause of viral encephalitis, morbidity, and mortality in south-east asia and the western pacific. world health organization recognized japanese encephalitis (je) as a public health priority in demands to initiate active vaccination programs. recently, the geographic distribution of jev has apparently expanded into other areas in the pacific islands and northern australia; however, major gaps exist in knowledge in regard to its current distributi ... | 2018 | 30118701 |
| phylogenetic position of diplostomum spp. from new world herons based on complete mitogenomes, rdna operons, and dna barcodes, including a new species with partially elucidated life cycle. | diplostomum ardeae dubois, 1969 has seldom been reported since its description from the great blue heron (ardea herodias l., 1758) in the usa. sequences obtained in this study from the barcode region of cytochrome c oxidase 1 (co1) in diplostomids from black-crowned night heron (nycticorax nycticorax (l., 1758)) in puerto rico matched data from d. ardeae from a. herodias in the type region. we also obtained dna barcodes from morphologically similar diplostomids from a rufescent tiger heron (tigr ... | 2020 | 32472382 |
| comparative analysis of intestine microbiota of four wild waterbird species. | waterbirds are ubiquitous and globally distributed. yet, studies on wild waterbirds' gut microbiota are still rare. our aim was to explore and compare the gut microbial community composition of wild waterbird species. four wild waterbird species that are either wintering or all-year residents in israel were studied: great cormorants, little egrets, black-crowned night herons and black-headed gulls. for each bird, three intestinal sections were sampled; anterior, middle and posterior. no signific ... | 2019 | 31481943 |
| Mosquito host selection varies seasonally with host availability and mosquito density. | Host selection by vector mosquitoes is a critical component of virus proliferation, particularly for viruses such as West Nile (WNV) that are transmitted enzootically to a variety of avian hosts, and tangentially to dead-end hosts such as humans. Culex tarsalis is a principal vector of WNV in rural areas of western North America. Based on previous work, Cx. tarsalis utilizes a variety of avian and mammalian hosts and tends to feed more frequently on mammals in the late summer than during the res ... | 2011 | 22206038 |
| trace element residues in eggshells of grey heron (ardea cinerea) and black-crowned night heron (nycticorax nycticorax) from nallihan bird paradise, ankara-turkey. | concentrations of four trace elements (cd, ni, cu and pb) were determined in eggshells of grey heron (ardea cinerea) and black-crowned night herons (nycticorax nycticorax) from nallihan bird paradise, which is located in the northern part of sariyar dam reservoir, turkey. results indicated that, within the same area, these ardeid species differed in the levels of cd, cu and pb in their eggshells (generally grey heron > night heron), possibly because females may have foraged in different habitats ... | 2007 | 17364239 |
| organochlorine and metal contaminant exposure and effects in hatching black-crowned night herons (nycticorax nycticorax) in delaware bay. | pea patch island in delaware bay is the site of the largest heronry north of florida. from 1989-93, the population of nine species of wading birds numbered approximately 12,000 pairs, but has recently declined to about 7,000 pairs. because delaware bay is a major shipping channel and receives anthropogenic releases of toxic substances from agricultural, industrial, and municipal point and nonpoint sources, contaminant exposure and effects to the heronry have been an ongoing concern. in 1997, pip ... | 2000 | 10790500 |
| viremia in young herons and ibis infected with venezuelan encephalitis virus. | fifty-seven of 61 nestling, 8- to 30-day-old herons of three species (black-crowned night heron, great egret, and snowy egret), developed viremia lasting one to three days following subcutaneous inoculation with small doses of endemic or epidemic strains of venezuelan encephalitis virus from mexico, guatemala or venezuela. two epidemic strains from guatemala or venezuela stimulated levels of viremia similar to those following infection with enzootic strains. great egrets, striated and boat-bille ... | 1976 | 998614 |
| wild waterfowl as potential vectors of vibrio cholerae and aeromonas species. | to study the hypothesis that migratory waterfowl are possible disseminators of vibrio cholerae and aeromonas. | 2018 | 29733476 |
| organophosphate flame retardants in heron eggs from upper yangtze river basin, southwest china. | the egg samples of four heron species, including black-crowned night heron (nycticorax nycticorax), little egret (egretta garzetta), chinese pond heron (ardeola bacchus) and cattle egret (bubulcus ibis), were collected from the upper yangtze river (changjiang) basin, southwest china in early summer of 2017. nine out of ten target organophosphate flame retardants (pfrs) were detected in these heron egg samples. the sum of concentrations of the pfrs quantified (∑pfrs) ranged from 63 to 590 pmol g- ... | 2019 | 31319314 |