| neotropical monogenoidea. 53. gyrodactylus corydori sp. n. and redescription of gyrodactylus anisopharynx (gyrodactylidea: gyrodactylidae), parasites of corydoras spp. (siluriformes: callichthyidae) from southern brazil. | morphometric analyses are used to evaluate the taxonomic status of two sympatric variants of gyrodactylus anisopharynx popazoglo et boeger, 2000 (forma "large-pharynx" and forma "small-pharynx"). the parasites were collected from the piraquara river and the miringuava river, state of paraná, brazil, between february 2005 and may 2006. a total of 132 parasites were measured from two hosts, corydoras ehrhardti steindachner and corydoras paleatus (jenyns). eleven morphological features of the hapto ... | 2009 | 19402241 |
| choice matters: incipient speciation in gyrodactylus corydori (monogenoidea: gyrodactylidae). | we investigated how gyrodactylus corydoribueno-silva and boeger, 2009 exploits two sympatric host species, corydoras paleatus (jenyns, 1842) and corydoras ehrhardti steindachner, 1910. specimens of g. corydori were collected from the piraquara and miringuava rivers, state of paraná, brazil, between 2005 and 2006. a total of 167 parasites was measured from both host species. nine morphometric features of the haptoral sclerites were measured and analyzed by discriminant analysis, cluster analysis ... | 2011 | 21310159 |