Gastrointestinal helminth parasites of the threatened Australasian crested grebe (Podiceps cristatus australis, Gould 1844) in New Zealand, with descriptions of Baruscapillaria kamanae n. sp. (Nematoda: Trichuridae) and Cryptocotyle micromorpha n. sp. (Trematoda: Opisthorchiidae).
Syst Parasitol
; 99(2): 217-239, 2022 04.
Article
de En
| MEDLINE
| ID: mdl-35124752
ABSTRACT
The Australasian crested grebe Podiceps cristatus australis, Gould 1844 is restricted to Australia and New Zealand, where it is listed as Threatened and Nationally Vulnerable. For the first time in New Zealand, we report on the parasitic helminths infecting three individuals from Lake Wanaka, Otago, using morphological and molecular tools. Seven helminth species were found in the gastrointestinal tract 2 nematodes (Contracaecum ovale and Baruscapillaria kamanae n. sp.), 4 trematodes (Australapatemon minor, Cryptocotyle micromorpha n. sp., Tylodelphys darbyi and Neopetasiger neocomensis), and 1 cestode (Confluaria pseudofurcifera). Except for T. darbyi, all are new records for New Zealand. A change of orthography is proposed for Neopetasiger neocomensis and N. pseudoneocomensis. Cryptocotyle micromorpha n. sp. (Opisthorchiidae) is distinguished from similar species by its small size, wholly extracaecal vitellaria and anteriorly looped uterus. Baruscapillaria kamanae n. sp. (Trichuridae) is distinguished from other freshwater species by a combination of vulva and spicule morphology. The helminth parasites found here are mostly the same as those from the grebe in the northern hemisphere, indicating that they have been carried with the host species in its spread to Australasia. However, the parasite fauna may be depauperate due to a diminishing reservoir of intermediate hosts in that geographical migration.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Trematoda
/
Infections à trématodes
/
Maladies des oiseaux
/
Maladies gastro-intestinales
/
Nematoda
/
Nématodoses
Limites:
Animals
Pays/Région comme sujet:
Oceania
Langue:
En
Journal:
Syst Parasitol
Année:
2022
Type de document:
Article
Pays d'affiliation:
Nouvelle-Zélande