RESUMEN
Based on the examination of specimens of Apoloparaksis crassirostris deposited in the Museum of Zoology in Copenhagen and the Museum of Natural History in Geneva and cestode material from other collections, we have carried out the revision of this species, designated the lectotype and paralectotypes, made its redescriptions, enumerated synonyms, showed the only host of this species in the snipe Gallinago gallinago, and more precisely mapped the distribution range of the parasite. The investigation of the type series of A. sinensis, the parasite of the woodcock Scolopax rusticola, deposited in the Museum of Natural History in Geneva, confirmed the validity of this species, earlier considered as synonym of A. crassirostris. The lectotype and paralectotypes of A. sinensis were designated. Some data on its life cycle have been obtained. It was also found by the experimental invasion that five species of oligochaetes of the family Lumbricidae are intermediate hosts. The metacestodes of this species belongs to the tailed diplocyst modification and posesses a characteristic feature, the bifurcation of tail.
Asunto(s)
Cestodos/clasificación , Hymenolepis/clasificación , Animales , Enfermedades de las Aves/parasitología , Aves , Cestodos/fisiología , Interacciones Huésped-Parásitos , Hymenolepis/fisiología , Estadios del Ciclo de Vida , Museos , Especificidad de la Especie , Cola (estructura animal)/anatomía & histología , Terminología como AsuntoRESUMEN
Dichoanotaenia multifilamenta sp. n. (Cestoda: Dilepididae) from the Black Turnstone, Arenaria melanocephala (Vigors), in Alaska is described. This cestode is distinguished from other species of the genus Dichoanotaenia López-Neyra 1944 mainly by the structure of the cirrus and of the egg.
Asunto(s)
Aves/parasitología , Cestodos/clasificación , Alaska , Animales , Cestodos/anatomía & histología , Cestodos/aislamiento & purificación , Femenino , Óvulo/citologíaRESUMEN
Post-embryonic development of the cestode Wardium calumnacantha (Schmidt, 1963) comb. n., a parasite of common snipe, was studied by experimental infection of the oligochaetes Neoscolex roseus Morev and Rhyacodrilus coccineus (Vejdovský) carried out in Chukotka. The larvae of W. calumnacantha were ovoid and belonged to the morphological modification of cysticercoid-diplocyst. Two invaginations were observed during the larvogenesis. The first one occurred at the stage of scolexogenesis, when the body of larva was plunged into the external cyst formed by the walls of the primary cavity. Second invagination of the formed scolex and neck into the internal cyst was the final stage of cysticercoid formation.
Asunto(s)
Enfermedades de las Aves/parasitología , Cestodos/fisiología , Hymenolepis/fisiología , Animales , Aves , SiberiaRESUMEN
A description and differential diagnosis of Wardium chaunense sp. n. from the common snipe, Gallinago gallinago (L). from Chaun lowland (North-West Chukotka) are presented. This cestode differs from other related species of this genus in the form of rostellar hooks and form and armament of cirrus.
Asunto(s)
Cestodos/anatomía & histología , Animales , Cestodos/clasificación , Siberia , Especificidad de la EspecieAsunto(s)
Anélidos/parasitología , Aves/parasitología , Cestodos , Oligoquetos/parasitología , Polimorfismo Genético , Animales , Ecología , SiberiaRESUMEN
Larvae of A. birulai from Lumbriculus variegatus and A. brachyphallos from Stylodrilus sp. from the Chauna lowland (Chukotka) are described. The species belonging of the larvae was proved experimentally. It was shown that Cysticercus sp. Hrabe, 1958 is a larvacyst of A. birulai. For larvacysts of A. birulai type the name of "floricerk" was suggested and for those of A. brachyphallos type--the name "tailed diplocyst". It is noted that A. uelcal Spassky et Jurpalova, 1968 is a synonym of A. brachyphallos (Krabbe, 1869) nec A. brachyphallos sensu Davies, 1938.
Asunto(s)
Cestodos/crecimiento & desarrollo , Hymenolepis/crecimiento & desarrollo , Hymenolepis/anatomía & histología , Hymenolepis/clasificación , Larva , Terminología como AsuntoRESUMEN
The larvae of 12 cestode species of the genus Aploparaksis have been studied. In order to confirm the determination, the definitive hosts, birds, were experimentally infected with 5 species and the intermediate hosts, oligochaetes, with 6 species of cestodes. A great variability was observed in the morphology of tail appendix of cysticercoids belonging to five types of larvae. It is assumed that the polymorphism of larvae of the genus Aploparaksis results from the morphological adaptation to the development under arctic conditions.