| life history studies of heterophyid trematodes in the neotropical region: ascocotyle (leighia) hadra sp. n. | the life cycle of ascocotyle (leighia) hadra n. sp. was experimentally reproduced, starting from cercariae from naturally infected littoridina parchappei, collected from los ranchos stream, near mercedes city, buenos aires province, argentina. metacercariae were found encysted in the liver and mesentery of experimentally and naturally infected fishes cnesterodon decemmaculatus and jenynsia lineata. adults were obtained experimentally in chicks and mice. the natural host is unknown. the new speci ... | 1992 | 1343669 |
| an ultrastructural and cytochemical study of metacercarial cyst development in ascocotyle pachycystis schroeder and leigh, 1965. | | 1971 | 4333533 |
| life history of ascocotyle mcintoshi price, 1936 (trematoda: heterophyidae). | | 1974 | 4430943 |
| [research on the behavior and the fate of the metacercaria of ascocotyle branchialis j. timon-david 1961 (trematoda, digenea, heterophyidae) during metamorphosis of the host (rana esculenta l.)]. | | 1966 | 4956427 |
| [ascocotyle coleostoma colic distomiasis. the 1st world case or the follow-up of a tropical pathology congress in egypt]. | | 1983 | 6226985 |
| morphological and physiological consequences of parasites encysted in the bulbus arteriosus of an estuarine fish, the sheepshead minnow, cyprinodon variegatus. | the contribution of parasites to host population regulation is undefinable without knowledge of parasite effects on individual host performance and survival. effects are best determined by examining performance of differentially parasitized hosts under the varying environmental conditions that characterize the host's habitat. the sheepshead minnow, cyprinodon variegatus, an estuarine fish, is heavily parasitized in the bulbus arteriosus by the heterophyid trematode ascocotyle pachycystis in semi ... | 1993 | 8459336 |
| ascocotyle (a.) nunezae n. sp. (digenea: heterophyidae) from yucatan, mexico. | a new heterophyid species, ascocotyle (ascocotyle) nunezae n. sp., is described from adults found in the intestine of naturally infected heron, casmerodius albus (type host), from the coastal lagoon of celestún. yucatan, mexico, and a domestic chick (gallus gallus), experimentally infected with metacercariae from cichlasoma octofasciatum. the new species is characterized mainly by the number (32-37) and arrangement of circumoral spines, which form i complete row of 25-27 circumoral spines and 6- ... | 1997 | 9057711 |
| taxonomic study of ascocotyle (phagicola) longa ransom, 1920 (digenea: heterophyidae) and related taxa. | species of ascocotyle looss, 1899 (subgenus phagicola faust, 1920) (digenea: heterophyidae) related to a. (p.) longa ransom, 1920, i.e. those with a bipartite gonotyl and a single crown of 16 circumoral spines, were revised on the basis of examination of type and voucher specimens. the species a. (p.) arnaldoi travassos, 1929, a. (p.) byrdi (robinson, 1956) and a. (p.) longicollis (kuntz & chandler, 1956), all possessing 16 circumoral spines, are synonymised with a. (p.) longa. a. (p.) ascolonga ... | 1999 | 10619064 |
| digeneans and cestodes parasitic in the white-faced ibis plegadis chihi (aves: threskiornithidae) from argentina. | some digeneans and cestodes parasitic in a population of the white-faced ibis plegadis chihi (vieillot) from buenos aires province, argentina, are presented. the digeneans dietziella egregia (dietz, 1909), patagifer bilobus (rudolphi, 1819), ascocotyle (leighia) hadra ostrowski de nuñez, 1992 and posthodiplostomum nanum dubois, 1937 from the intestine; prosthogonimus ovatus (rudolphi, 1803) from the cloaca; athesmia heterolecithodes (braun, 1899) from the bile ducts and the cestode hymenolepis m ... | 2000 | 11104147 |
| ultrastructure of metacercarial cysts of six heterophyid trematodes from fish. | the ultrastructure of metacercarial cysts of ascocotyle sexidigita. a. (phagicola) diminuta, and pygidiopsoides spindalis (herein described for the first time) collected from natural hosts in california was compared with that of cysts from a. tenuicollis (also described for the first time), a. pachycystis, and a. leighi collected from natural fish hosts in mississippi. the results show that none of the cysts studied approximated the thick cyst produced by a. pachycystis, but all cysts comprised ... | 2000 | 11133102 |
| seasonal dynamics of the helminths of bluegill (lepomis macrochirus) in a subtropical region. | seasonal prevalence and abundance of the helminths of bluegill sunfish in a louisiana oligohaline bayou were measured by a survey and a field "live-box" experiment. the survey took place from the spring of 1997 to the summer of 1998 and examined fish that were <7 cm. three trematode species, phagicola nana (heterophyidae), ascocotyle tenuicollis (heterophyidae), and posthodiplostomum minimum (diplostomatidae), and 2 nematode species, camallanus oxycephalus (camallanidae) and spinitectus carolini ... | 2003 | 12760648 |
| morphology of ascocotyle leighi, n. sp. (heterophyidae), an avian trematode with metacercaria restricted to the conus arteriosus of the fish, mollienesia latipinna le sueur. | | 1956 | 13367969 |
| [research on the morphology, experimental development and classification of a metacercaria of the genus ascocotyle looss 1899 (trematoda, digenea, heterophyidae), parasite of the gills in tadpoles of rana esculenta l]. | | 1961 | 13921309 |
| the heterophyid trematode ascocotyle (a.) leighi burton, 1956, from the hearts of certain poeciliid and cyprinodont fishes. | | 1964 | 14174783 |
| the life history of ascocotyle pachycystis sp. n., a trematode (digenea: heterophyidae) from the raccoon in south florida. | | 1965 | 14339373 |
| studies on helminths of north carolina vertebrates. ii. ascocotyle ampullacea sp. n. (trematoda: heterophyidae) from raccoon. | | 1962 | 14474002 |
| 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 |
| taxonomic status, redescription, and surface ultrastructure of ascocotyle (phagicola) pindoramensis n. comb. (digenea: heterophyidae). | pygidiopsis pindoramensis travassos, 1928, is redescribed from the holotype and specimens obtained from experimental infections of hamsters with metacercariae of the naturally infected poeciliids poecilia vivipara and phalloptychus januarius from rio de janeiro, brazil. ascocotyle (phagicola) pindoramensis (travassos, 1928) n. comb. is proposed, based on the presence of a solid, tapering muscular posterior prolongation of the oral sucker and ascocotyle (phagicola) mollienisicola (sogandares-bern ... | 2006 | 16883992 |
| taxonomic status of ascocotyle (phagicola) rara arruda, muniz-pereira et pinto, 2002 (digenea: heterophyidae). | holotype and paratype of ascocotyle (phagicola) rara arruda, muniz-pereira et pinto, 2002, a heterophyid trematode recently described on the basis of two worms collected by lauro travassos in 1921 in the intestine of ixobrychus exilis (gmelin) from brazil, were studied. the morphology of the worms revealed their conspecificity with ascocotyle (phagicola) angeloi travassos, 1928 found in the same host. both the taxa have a similar length (between 600 and 900 microm) and shape of the body (long py ... | 2006 | 17252924 |
| redescription of ascocotyle (ascocotyle) felippei travassos, 1928 (digenea: heterophiydae) with new synonymies. | the heterophyid trematode ascocotyle (ascocotyle) felippei travassos, 1928, is redescribed and new data on its life cycle are provided, based on types and metacercariae found in the heart bulb and gills of naturally infected guppies, poecilia vivipara (new fish intermediate host), from a coastal lagoon in rio de janeiro, brazil. examination of the type and all voucher specimens of a. (a.) felippei collected by travassos in the type host and locality in brazil has shown that they possess only 32 ... | 2007 | 18314695 |
| temporal variation in the helminth parasite communities of the pacific fat sleeper, dormitator latifrons, from tres palos lagoon, guerrero, mexico. | temporal variation in the helminth parasite communities of the pacific fat sleeper, dormitator latifrons, from tres palos lagoon, guerrero, mexico, was studied at the component community and infracommunity levels. in total, 185 host specimens were collected between april 2000 and march 2001. eight parasite species were identified: clinostomum complanatum, echinochasmus leopoldinae, ascocotyle (phagicola) longa, pseudoacanthostomum panamense, saccocoelioides sp., parvitaenia cochlearii, neoechino ... | 2008 | 18564733 |
| helminth communities of the autochthonous mustelids mustela lutreola and m. putorius and the introduced mustela vison in south-western france. | this study presents the first comprehensive helminthological data on three sympatric riparian mustelids (the european mink mustela lutreola, the polecat m. putorius and the american mink m. vison) in south-western france. one hundred and twenty-four specimens (45 m. lutreola, 37 m. putorius and 42 m. vison) from eight french departments were analysed. globally, 15 helminth species were detected: troglotrema acutum, pseudamphistomum truncatum, euryhelmis squamula, euparyphium melis and ascocotyle ... | 2008 | 18752724 |
| seasonal patterns in metazoan parasite community of the "fat sleeper" dormitator latifrons (pisces: eleotridae) from tres palos lagoon, guerrero, mexico. | dormitator is among the most important fish genera in the mexican pacific coastal lagoon systems. in tres palos lagoon, the fat sleeper dormitator latifrons is one of the most significant species based on catch volume, although it is only consumed locally. very little information exists on this species' parasitofauna. composition and temporal variation in the metazoan parasite community structure of dormitator latifrons from tres palos lagoon (99 degrees 47' w, 16 degrees 48' n), guerrero, mexic ... | 2008 | 19419054 |
| the life cycle of ascocotyle (phagicola) longa (digenea: heterophyidae), a causative agent of fish-borne trematodosis. | the complete life cycle of the trematode ascocotyle (phagicola) longa (digenea: heterophyidae) is elucidated by natural observation validated by experimental infections. the natural first intermediate host of a. (p.) longa, an agent of human heterophyiasis in brazil, is the cochliopid snail heleobia australis (new first intermediate host). metacercariae were found encysted in the body musculature, heart, stomach, liver, kidney, spleen, gonads and mesentery of mullets mugil liza. hamsters mesocri ... | 2010 | 19896920 |
| occurrence of ascocotyle (phagicola) longa ransom, 1920 (digenea: heterophyidae) in mugil incilis from cartagena bay, colombia. | fishborne metacercariae have not been reported in colombia. during an 8-month period, 250 mullet/lisa (mugil incilis) were examined for trematode metacercariae in the liver. average prevalence and intensity were 93.4+/-2.5% and 8476+/-1238 cysts per gram of liver, respectively. monthly prevalence of the trematode, identified as ascocotyle (phagicola) longa ransom (1920), was always high (>79%) and there was no difference between sampling periods (p>0.05). trematode intensity in lisa had a signif ... | 2010 | 19939571 |
| prevalence of heterophyiosis in tilapia fish and humans in northern egypt. | a total of 100 tilapia fish samples were collected from brackish water (n = 50) and fresh water (n = 50) resources, northern egypt, and examined for heterophyid encysted metacercariae (emc) during the period from august 2007 to july 2008. the overall prevalence of infection was 32%; 22% for brackish water fish and 42% for fresh water fish. significant differences in parasite occurrence among body regions were found, with muscles of the tail and caudal third being highly affected (93.4%) followed ... | 2010 | 20644958 |
| gill ectoparasite assemblages of two non-native cichla populations (perciformes, cichlidae) in brazilian reservoirs. | the gills of 41 cichla piquiti and 39 c. kelberi from itaipu and lajes reservoirs, respectively, brazil, were examined to describe the ectoparasite assemblages of these two non-native peacock-bass populations. all ectoparasite species of the two studied hosts (c. piquiti and c. kelberi) were dominant, but ascocotyle sp. (metacercariae) was the prevalent (58.53%) and most abundant helminth species in c. piquiti hosts, while sciadicleithrum ergensi was the dominant species in c. kelberi hosts. gil ... | 2010 | 20716395 |
| conspicuous behaviour of fundulus heteroclitus associated with high digenean metacercariae gill abundances. | fundulus heteroclitus from six sites throughout the hackensack meadowlands district in northern nj, u.s.a., were examined. differences in behaviour (surfacing, conspicuousness and activity) were compared to gill infection intensity. fish from populations infected with >1500 digenean metacercariae of ascocotyle phagicola diminuta and echinochasmus schwartzi, spent significantly more time at the water surface and exhibited significantly more conspicuous behaviour (e.g. jerking) than fish from less ... | 2009 | 20735598 |
| natural and anthropogenic factors shape metazoan parasite community structure in mummichog (fundulus heteroclitus) from two estuaries in new brunswick, canada. | previously published multidisciplinary studies in the miramichi and bouctouche rivers (new brunswick, canada) noted significant changes in fish health parameters, including elevated tissue levels of organic contaminants and a wide range of physiological disturbances, in mummichog fundulus heteroclitus (l.) from a site on the miramichi river that received bleached kraft pulpmill and municipal effluent. the present study reports differences in the abundance of individual parasite species, as well ... | 2011 | 22053620 |