| evolutionary avenues for, and constraints on, the transmission of frog lung flukes (haematoloechus spp.) in dragonfly second intermediate hosts. | metacercariae survival patterns and their distribution in second intermediate odonate hosts were examined for 4 species of frog lung flukes. surveys of aquatic larvae and recently emerged teneral dragonflies and damselflies indicated that prevalence and mean abundance of haematoloechus spp. metacercariae were significantly lower in teneral dragonflies than larval dragonflies, while there was no significant difference in prevalence or mean abundance of haematoloechus spp. metacercariae among larv ... | 2007 | 17626352 |
| co-occurrence of haematoloechus complexus and rhabdias joaquinensis in the plains leopard frog from nebraska. | species of haematoloechus and rhabdias both are ubiquitous lung parasites of frogs, yet surprisingly little research has been conducted on the interactions between these worms. in a small nebraska stream, 256 rhabdias joaquinensis and 225 haematoloechus complexus were found in the lungs of lithobates (=rana) blairi. thirty-six of the 44 (82%) frogs were co-infected with h. complexus and r. joaquinensis whereas 5 (11%) frogs were infected with only 1 species and 3 (7%) frogs were uninfected. test ... | 2013 | 23116463 |
| small frogs get their worms first: the role of nonodonate arthropods in the recruitment of haematoloechus coloradensis and haematoloechus complexus in newly metamorphosed northern leopard frogs, rana pipiens, and woodhouse's toads, bufo woodhousii. | studies on the life cycles and epizootiology of north american frog lung flukes indicate that most species utilize odonates as second intermediate hosts; adult frogs become infected by ingesting odonate intermediate hosts. newly metamorphosed frogs are rarely infected with these parasites, predominantly because they are gape-limited predators that cannot feed on large intermediate hosts such as dragonflies. we examined the role of the frog diet and potential intermediate hosts in the recruitment ... | 2007 | 17539412 |
| differentiation of mexican species of haematoloechus looss, 1899 (digenea: plagiorchiformes): molecular and morphological evidence. | molecular evidence is interpreted in the light of morphology to examine the validity of several species of haematoloechus described as mexican endemics. internal transcribed spacers 1 and 2 and 28s ribosomal genes were sequenced for 11 isolates. phylogenetic analysis of separate partitions and combined databases was conducted. results were analyzed, in the light of morphological evidence. haematoloechus macrorchis is proposed as a junior synonym of haematoloechus longiplexus. haematoloechus pulc ... | 1999 | 10577731 |
| helminths of two native frog species (rana chiricahuensis, rana yavapaiensis) and one introduced frog species (rana catesbeiana) (ranidae) from arizona. | the gastrointestinal tracts, lungs, urinary bladders, and body cavities of rana catesbeiana (n = 25), rana chiricahuensis (n = 25), and rana yavapaiensis (n = 37) from arizona were examined for helminths. helminths representing 9 species of trematodes: cephalogonimus brevicirrus, glypthelmins quieta, gorgoderina attenuata, haematoloechus complexus, haematoloechus langiplexus, megalodiscus temperatus, alaria sp., clinostomum sp., and an unidentified strigeid; and 4 species of nematodes: falcaustr ... | 1998 | 9488361 |
| behavioral basis of second intermediate host specificity among four species of haematoloechus (digenea: haematoloechidae). | cercarial behavior patterns were examined in 4 species of frog lung flukes (haematoloechus spp.). cercariae of haematoloechus complexus, haematoloechus medioplexus, haematoloechus longiplexus, and haematoloechus varioplexus were exposed to 3 species of experimental arthropods and an inanimate control. the number of cercariae attached to an experimental host at 5 min postexposure was recorded. haematoloechus longiplexus and h. complexus cercariae attached to experimental hosts at higher rates tha ... | 1996 | 8627509 |
| trematode community structure in the pulmonate snail physa gyrina. | trematode community structure was examined in the pulmonate snail physa gyrina over a 12-mo period. a total of 1,181 snails was collected from charlie's pond, north carolina, and was found to be parasitized by 6 trematode species. infracommunities were relatively species rich when compared to previous studies, with 18.4% of infected snails having multi-species infections. halipegus eccentricus was found in 88.4% of multiple infections, usually with 1 of 2 other autogenic, egg-transmitted species ... | 1993 | 8459331 |
| second intermediate host-specificity of haematoloechus complexus and haematoloechus medioplexus (digenea: haematoloechidae). | second intermediate host-specificity was examined for 2 species of the frog lung fluke genus haematolechus. nine species of freshwater arthropods were exposed to cercariae of h. complexus and h. medioplexus. metacercariae of h. complexus developed in all arthropod species used. metacercariae of h. medioplexus developed only in anisopteran odonate naiads. this difference in host utilization may have epizootiological implications. the potential development of h. complexus in a greater number of ar ... | 1994 | 7799152 |