the epizootiology of eustrongylidosis in wading birds (ciconiiformes) in florida.a total of 2,167 individuals representing 15 species of wading birds was examined for infection with the nematode eustrongylides ignotus in florida (usa). ten of the species were infected with the greatest prevalences occurring in great blue herons (ardea herodius) (33%), great egrets (casmerodius albus) (22%), and snowy egrets (egretta thula) (19%). among nestlings, prevalences increased with age. this parasite was estimated to cause at least 80% mortality among nestling ciconiiforms at one col ...19938487373
prevalence of eustrongylides ignotus in mosquitofish (gambusia holbrooki) in florida: historical and regional comparisons.we examined mosquitofish (gambusia holbrooki) caught between january 1990 and december 1991 from 24 sites in northern florida (usa), and preserved specimens collected from 32 sites throughout florida between 1930 and 1978, for presence of the larval nematode eustrongylides ignotus. we found 10 (42%) of the 24 recently-sampled sites in northern and central florida had at least one larval nematode present in the fish; combining these data with results of previous work, 11 (15%) of 75 recently samp ...19968827688
epizootiology of eustrongylides ignotus in florida: distribution, density, and natural infections in intermediate hosts.a total of 63,451 fish, representing 39 species, was collected from 176 foraging sites used by ciconiiform wading birds in peninsular florida (usa) and examined for larvae of eustrongylides ignotus. infected fish were identified from 30 (17%) of the sites, all of which had been altered by human disturbance such as removal of sediment to construct ditches and dikes, improve water flow, or increase storage capacity and had a history of receiving anthropogenic nutrients such as sewage effluent, urb ...200212238365
epizootiology of eustrongylides ignotus in florida: transmission and development of larvae in intermediate hosts.under laboratory conditions, 2 modes of transmission of eustrongylides ignotus (nematoda: dioctophymatoidea) to fish were identified. eastern mosquitofish (gambusia holbrooki) became infected after ingestion of either eggs of e. ignotus containing first-stage larvae or aquatic oligochaetes (limnodrilus hoffmeisteri) containing third-stage larvae of e. ignotus. after removal from the uterus of gravid e. ignotus females and incubation for 17-28 days, depending on temperature, it was found that par ...200312760643
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