Helminths of the paradise shelduck Tadorna Variegata (Gmelin) in the high country of Canterbury

dc.contributor.authorBisset, Stewart A.en
dc.date.accessioned2012-04-30T00:49:30Z
dc.date.available2012-04-30T00:49:30Z
dc.date.issued1974en
dc.description.abstractThe helminth parasites of the gastro-intestinal tract of the Paradise Shelduck Tadorna variegata (Gmelin) are surveyed together with aspects of the shelduck's ecology (particularly food and feeding habits). Twenty-two species of helminth parasite (19 from the gastro-intestinal tract), including one new species of notocotylid, are recorded from 281 shelducks examined. Their normal locations are noted. The new species is described and an account of its life history is given. The life history of a second notocotylid species, Uniserialis gippyensis, is described for the first time and the New Zealand intermediate host of a cosmopolitan cestode, Cloacotaenia megalops, is identified. Present knowledge of the life histories of all other helminth species found in the Paradise Shelduck is reviewed, and probable New Zealand intermediate hosts are suggested. Quantitative aspects of the helminth infections are examined, and comparisons made between burdens of adult and juvenile hosts, and males and females. Seasonal fluctuations in levels of infection are discussed. For comparison with the shelducks, helminth fauna and food of "dabbling ducks" and geese from the study area are investigated. The host-parasite-environmental interrelationships are discussed in an attempt to explain the composition and dynamics of the shelduck's helminth fauna. A brief discussion of pathology is included.en
dc.identifier.urihttp://hdl.handle.net/10092/6566
dc.identifier.urihttp://dx.doi.org/10.26021/6146
dc.language.isoen
dc.publisherUniversity of Canterbury. Zoologyen
dc.relation.isreferencedbyNZCUen
dc.rightsCopyright Stewart A. Bisseten
dc.rights.urihttps://canterbury.libguides.com/rights/thesesen
dc.titleHelminths of the paradise shelduck Tadorna Variegata (Gmelin) in the high country of Canterburyen
dc.typeTheses / Dissertations
thesis.degree.grantorUniversity of Canterburyen
thesis.degree.levelMastersen
thesis.degree.nameMaster of Scienceen
uc.bibnumber382045en
uc.collegeFaculty of Scienceen
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