| ultrastructural evidence for the presence of bacteria, viral-like particles, and mycoplasma-like organisms associated with giardia spp. | giardia trophozoites and cysts, isolated from mammalian and avian hosts, were examined by transmission electron microscopy (tem), scanning electron microscopy (sem), and by fluorescent light microscopy for the presence of microbial symbionts. mycoplasma-like organisms were observed on the surfaces of trophozoites isolated from the prairie vole, laboratory rat, and beaver. intracellular bacteria were observed by tem in the trophozoites and cysts of g. microti and by fluorescence microscopy in tro ... | 1988 | 3284999 |
| [life cycle of clinostomum golvani n. sp. (trematoda : clinostomidae) a larval parasite of biomphalaria glabrata, the snail vector of schistosoma mansoni in guadeloupe (author's transl)]. | the life cycle of a new species of clinostomidae, clinostomum golvani, described in guadeloupe (french west indies). the first intermediate host is the snail vector of schistosoma mansoni in this island, biomphalaria glabrata, which can be sterilized by this parasite. poecilia reticulata (guppy) serves as the second intermediate host. adult worms were obtained under experimental conditions from butorides virescens (the definitive host in nature), nycticorax nycticorax and ardea purpurea. the adu ... | 1980 | 7224533 |
| chlorinated hydrocarbons and biomarkers of exposure in wading birds and fish of the lower rio grande valley, texas. | during 1997 we evaluated reproductive success in colonial water birds nesting in the lower rio grande valley (lrgv), texas, and correlated success with concentrations of contaminants in eggs. we also measured steroid hormones and gonadosomatic index (gsi) as biomarkers of endocrine effects in common carp (cyprinus carpio). nest and fledging success of green herons (butorides virescens) and great egrets (ardea alba) were similar to those found in other parts of north america; however, nesting suc ... | 2001 | 11116345 |
| vectest as diagnostic and surveillance tool for west nile virus in dead birds. | the vectest antigen-capture assay for west nile virus was performed on oral and tissue swabs from dead birds in new york state from april 2003 through july 2004. results were compared with those from real-time reverse transcriptase-polymerase chain reaction of kidney or brain. oral vectest sensitivity is adequate for surveillance in american crows (corvus brachyrhynchos) (87%), blue jays (cyanocitta cristata) (80%), and house sparrows (passer domesticus) (76%). oral vectest performed well for sm ... | 2004 | 15663856 |
| waterbirds (other than laridae) nesting in the middle section of laguna cuyutlán, colima, méxico. | laguna de cuyutlán, in the state of colima, mexico, is the only large coastal wetland in a span of roughly 1150 km. despite this, the study of its birds has been largely neglected. between 2003 and 2006 we assessed the waterbirds nesting in the middle portion of laguna cuyutlán, a large tropical coastal lagoon, through field visits. we documented the nesting of 15 species of non-laridae waterbirds: neotropic cormorant (phalacrocorax brasilianus), tricolored egret (egretta tricolor), snowy egret ... | 2008 | 18624252 |
| [postnatal growth patterns in eight species of herons and egrets (ciconiiformes: ardeidae)]. | avian postnatal growth has received considerable attention and its ecological implications have been deeply analyzed. in this current paper, i describe the patterns of culmen and tarsus growth, as well as of weight gain patterns in eight species of herons and egrets (aves: ardeidae) found in the birama swamp in eastern cuba. between 1998 and 2006,714 nestlings of the following species were measured every two days: butorides virescens, bubulcus ibis, egretta thula, e. tricolor, e. caerulea, e. ru ... | 2011 | 21721238 |
| insights into the recent emergence and expansion of eastern equine encephalitis virus in a new focus in the northern new england usa. | eastern equine encephalomyelitis virus (eeev) causes a highly pathogenic zoonosis that circulates in an enzootic cycle involving the ornithophagic mosquito, culiseta melanura, and wild passerine birds in freshwater hardwood swamps in the northeastern u.s. epidemic/epizootic transmission to humans/equines typically occurs towards the end of the transmission season and is generally assumed to be mediated by locally abundant and contiguous mammalophagic "bridge vector" mosquitoes. | 2015 | 26453283 |
| host use and seasonality of culex (melanoconion) iolambdis (diptera: culicidae) from eastern florida, usa. | culex (melanoconion) iolambdis (dyar, 1918) is a mosquito (diptera: culicidae) species found throughout much of tropical america, including southern florida. relatively few reports are available regarding the ecology of cx. iolambdis, despite its widespread distribution and putative involvement in transmission of venezuelan equine encephalitis virus. to quantify habitat and host utilization, adults of cx. iolambdis were sampled from resting shelters at a field site in vero beach, florida, over a ... | 2016 | 27712940 |
| [egg size variation in egrets and herons (aves: ardeidae) nesting in birama's swamp, cuba]. | intraclutch egg size variation in birds depends on many ecological factors and on the evolutive history of each species. in wading birds, a trend to smaller eggs with laying order has been described, but comparative reports are scarce. in this study, egg size variation patterns were described for nine egrets and heron species nesting in birama' swamp, cuba. the patterns were described using external dimensions of 3142 eggs from 1875 nests of butorides virescens, bubulcus ibis, ardea alba, nyctic ... | 2015 | 26299128 |
| residues of organochlorine insecticides, polychlorinated biphenyls, and heavy metals in biota from apalachicola river, florida, 1978. | seventy-seven composite samples composed of largemouth bass ( micropterus salmoides ), channel catfish ( ictaluras punctatus), threadfin shad ( dorosoma petenense ), asiatic clam (corbicula fluminea ), burrowing mayfly ( hexagenia sp.), water snake ( natrix spp.), and little green heron ( butorides virescens ) were collected from upper and lower reaches of the apalachicola river, florida, in 1978 for residue analysis of organochlorine insecticides, pcbs (polychlorinated biphenyls), and metals. c ... | 2013 | 6427177 |
| the genus ophiovalipora hsü, 1935 (cestoda: dilepididae) with the description of ophiovalipora minuta sp. nov. from the green heron (butorides virescens l.). | | 1950 | 15402957 |
| using bloodmeal analysis to assess disease risk to wildlife at the new northern limit of a mosquito species. | the historically southeastern mosquito species culex erraticus has over the last 30 years undergone a marked expansion north. we evaluated this species' potential to participate in local disease cycles in the northeastern usa by identifying the vertebrate sources of blood in cx. erraticus specimens from new jersey. we found that the majority of bloodmeals (92.6%) were derived from birds, followed by 6.8% from mammals (of which half were human), and a single amphibian bloodmeal from a spring peep ... | 2018 | 30242538 |
| diversity and prevalence of hemoparasites of wading birds in southern florida, usa. | relatively few studies on hemoparasites have been conducted on wading birds in the families ardeidae and threskiornithidae (order pelecaniformes), especially in the united states. in this study, we obtained baseline data on the prevalence and genetic diversity of haemosporidian parasites in wading birds opportunistically sampled from southern florida, usa. we detected blood parasites in white ibis (eudocimus albus), glossy ibis (plegadis falcinellus), green heron (butorides virescens), and rosea ... | 2017 | 29379711 |
| spatial patterns of mercury contamination and associated risk to piscivorous wading birds of the south central united states. | piscivorous birds are top predators in aquatic ecosystems and are vulnerable to mercury (hg) exposure and associated adverse health effects. in some areas of north america, the health risk posed to piscivorous birds by hg contamination has not been characterized because concentrations of hg in bird tissues have not been extensively monitored. when data on hg in tissues of piscivorous birds are not available, the concentration of hg in the blood of piscivorous birds can be estimated from the conc ... | 2019 | 30367697 |
| unique preening behavior may use light and heat to facilitate ectoparasite removal in green herons (butorides virescens). | | 2018 | 29207215 |