| morbidity and mortality of great blue herons in indiana caused by eustrongylides ignotus. | | 1977 | 907587 |
| 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 ... | 1993 | 8487373 |
| pathogenesis of eustrongylides ignotus (nematoda: dioctophymatoidea) in ciconiiformes. | natural (n = 157) and experimental (n = 5) infections with the nematode eustrongylides ignotus are described for ciconiforms collected in florida (usa). larvae perforated the ventriculus in 3 to 5 hr and caused hemorrhage and bacterial peritonitis that sometimes progressed to a fibrous peritonitis with extensive adhesions. severity of the disease was related inversely to the age of the bird and directly to the number of parasites involved. some infections in adult birds were resolved. as a conse ... | 1993 | 8487374 |
| eustrongylidiasis--a parasitic infection acquired by eating live minnows. | the objective of this study was to heighten physician awareness of eustrongylidiasis by investigating the epidemiology of this parasitic infection. the nematode eustrongylides ignotus was recovered surgically from our patient, in whom eustrongylidiasis simulated acute appendicitis. the patient had consumed two live minnows obtained from big timber creek of belmawr, nj. the authors determined the e ignotus infestation rate of free-living minnows at this creek. with this data, they approximate the ... | 1996 | 8758872 |
| 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 ... | 1996 | 8827688 |
| eustrongylidiasis in eastern great blue herons (ardea herodias). | the nematode eustrongylides ignotus was found in peritoneal lesions of several great blue herons (ardea herodias) submitted for necropsy from a wildlife rehabilitation center in northern delaware. prior to death, signs of disease included ataxia, emaciation, weakness, and anemia. blood collection was not uniformly performed, but in cases where it was performed, affected birds demonstrated abnormal clinical hematology. postmortem findings included numerous lesions associated with verminous perito ... | 2000 | 10879926 |
| altered predation susceptibility of mosquitofish infected with eustrongylides ignotus. | eustrongylides ignotus is a parasitic nematode whose definitive hosts are often piscivorous wading birds (ciconiiformes). several species of small fishes are intermediate hosts, while larger predatory fish may be paratenic (transport) hosts. we examined predation susceptibility of infected mosquitofish (gambusia holbrooki) to three species of predatory fishes, including juvenile largemouth bass (micropterus salminoides), warmouth (lepomis gulosus), and bluegill (lepomis macrochirus). a 250 l aqu ... | 2001 | 11504229 |
| 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 ... | 2002 | 12238365 |
| 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 ... | 2003 | 12760643 |
| endoparasite infracommunities of hemisorubim platyrhynchos (valenciennes, 1840) (pisces: pimelodidae) of the baía river, upper parana river floodplain, brazil: specific composition and ecological aspects. | parasites of 136 specimens of hemisorubim platyrhynchos, popularly called jurupoca, were analyzed. fourteen parasite species were recorded: four digeneans (crocodilicola pseudostoma, one gorgoderidae species, sanguinicola platyrhynchi, and sphincterodiplostomum sp.); three cestodes (goezeella paranaensis, spatulifer maringaensis, and mariauxiella piscatorum); five nematodes (contracaecum type 1 larvae of moravec, kohn, & fernandes, 1993; contracaecum type 2 larvae of moravec, kohn, & fernandes, ... | 2003 | 14509848 |
| prevalence and pathology of helminths of ciconiiform birds from the brazilian swamplands. | the prevalence of helminths recovered from 108 birds representing eight species of ciconiiformes from the brazilian west-central region are presented. the digeneans ascocotyle (phagicola) longa, clinostomum marginatum, cotylotretus grandis, ithyoclinostomum dimorphum, the nematodes contracaecum multipapillatum, desmidocercella ardeae, eustrongylides ignotus, and the cestode valipora mutabilis were identified. contracaecum multipapillatum was the most prevalent species and e. ignotus the most pat ... | 2004 | 15469630 |
| effects of a parasitic nematode on male mate choice in a livebearing fish with a coercive mating system (western mosquitofish, gambusia affinis). | i examined the effects of the parasitic larval nematode, eustrongylides ignotus, on male mate choice in the western mosquitofish, gambusia affinis. i hypothesized that parasite presence influences male mate choice either directly (via reduction in male mating behavior due to presence of parasite in females) or indirectly (via reduction in male mating behavior due to reduced condition of infected females). specifically, i tested the predictions that (1) males would mate preferentially with uninfe ... | 2009 | 18765273 |
| development of eustrongylides ignotus (nematoda: dioctophmida) in domestic ducks (anas platyrhynchos domestica (l.)). | investigating the development of eustrongylides ignotus in its definitive host would enable us to trace the complete life cycle of this nematode. fourth-stage larvae isolated from naturally infected swamp eels (monopterus albus) were used to infect domestic ducks (anas platyrhynchos domestica [l.]). we observed that male and female worms exhibited different developmental patterns in host ducks. in males, the fourth molt occurred at day 1-2 post-infection (pi), after which they attained maturity ... | 2009 | 19463029 |
| eustrongylides ignotus infecting commercial bass, morone chrysops female x morone saxatilis male, and other fish in the southeastern usa. | | 2009 | 19490394 |
| large scale mortality of nestling ardeids caused by nematode infection. | during the summer of 1976, an epornitic of verminous peritonitis caused by eustrongylides ignotus resulted in large scale mortality of young herons and egrets on pea patch island, delaware. mortality was highest (84%) in snowy egret nestlings ( egretta thula ) and less severe in great egrets ( casmerodius albus ), louisiana herons ( hydranassa tricolor ), little blue herons ( florida caerulea ), and black crowned night herons ( nycticorax nycticorax ). most deaths occured within the first 4 week ... | 1977 | 24228957 |