ABSTRACT:In parrots (Psi�aciformes), seven nematode species of genus Ascaridia have been found so far, both in wild birds and in birds in captivity. Five species are specific for parrots: Ascaridia hermaphrodita, A. sergiomeirai, A. ornata, A. nicobarensis and A. platyceri. Two species: A. galli and A. columbae, that infect gallinaceous and columbiform birds, respectively, were found also in parrots. On the basis of data from the literature and our own observations the taxonomy, synonyms and list of definite hosts of these nematode species were reviewed. The morphometrical features of nematode species were compiled and a determination key was added.
Kajerová V., V. Baru‰: Psittacine birds (Aves: Psittaciformes) as new hosts of Baruscapillaria obsignata (Nematoda: Capillariidae). Acta Vet. Brno 2005, 74: 571-574.The first record of Baruscapillaria obsignata (Capillariidae) in small intestine of three psittacine birds (Barnardius zonarius, Agapornis roseicollis and Melopsittacus undulatus) kept in captivity in the Czech Republic is described. Morphometry of nematode species parasitizing psittacine birds was found to be identical with that of the parasites from typical hosts, domestic and free-living columbiform birds. Epizootiological aspects of interchange of this nematode species, and others (ascariids, capillariids, oxyurids) among domestic birds (Galliformes, Columbiformes), free-living birds (Passeriformes) and psittacine birds (Psittaciformes) kept in captivity are discussed.
ABSTRACT:The aim of the study was to determine the range of species of ascarids in parrots in the Czech Republic. Ascarids were found during post-mortem parasitological examination of 38 psi�aciform birds belonging to 15 different species. All ascarids found were determined as Ascaridia platyceri. Nine bird species were determined as new hosts of this parasite. A. platyceri is a typical ascarid for parrots of Australian origin. The fact that this parasite was found in bird species of African origin demonstrated a possibility of spread of A. platyceri to hosts of different zoogeographical origin. A. platyceri was described in detail from the host Melopsi�acus undulatus and differentiated from other ascarids on the basis of morphological and quantitative traits. The most important differentiating traits included the presence of interlabia in both sexes. In males, the traits important for species identification included the number and location of caudal papillae (a total of 9 to 10 pairs), relatively short spicula and absence of cuticular alae on the spicula, while females featured a conical shape of the tail.
A new species, Pterothominx (Pterothominx) moraveci n. sp. (Trichinelloidea: Capillariidae) is described from an Australian parrot, Barnardius zonarius Shaw (Psittacidae: Psittaciformes), imported from Germany and kept in captivity in the Czech Republic. Males of the new taxon differ from all other species of the subgenus Pterothominx Freitas, 1959, which mainly parasitise galliform birds, in having a shorter spicule (0.925-1.338; mean 1.050 mm), a shorter body length and a different form of armed spicular sheath and bursa. Females differ in having the smallest eggs (40-50 x 20-25; mean 48 x 23 microm) and in other morphometrical characters. From the species P. (P.) totani (Linstow, 1875), which parasitises charadriiform birds, the new species differs in its smaller number of stichocytes (females 42-46, mean 44; versus 50-54), different form of the bursa and praebursal alae, and other characters. This is the only species of Pterothominx that parasitises psittacine birds.
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