New Zealand Journal of Marine and Freshwater Research abstracts

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Short communication
Presence and distribution of Giardia cysts in New Zealand waters

TMJ. BROWN*
JOANNA CHASTE
PHILIP J.KELLY
ROBERT VAN DUTVENBODEN

Massey University/New Zealand Health Department Giardia Unit Department of Microbiology and Genetics School of Biological Sciences, Massey University Private Bag, Palmerston North, New Zealand

JEFFREY AINGE NEVILLE JONES

Resource Use and Recreation Division
Department of Conservation
P. O. Box 10-420, Wellington, New Zealand

NATALIE K. WALKER
DESMOND G. TILL

Public Health Laboratory New Zealand Communicable Disease Centre P. O. Box 50-348, Porinia, New Zealand

HELEN SILLARS FIONA LEMMON

Microbiology Laboratory
Wellington Regional Council
P. O. Box 11-646, Wellington, New Zealand

Abstract Giardia intestinalis cyst monitoring programmes from New Zealand waters were carried out between 30 March 1990 and 1 August 1991. Giardia cysts were found in 135 of 412 samples (33%). The corresponding cyst concentrations ranged from 0.0 to 45.06 cysts per 100 1. Cyst recovery efficiency using seeded samples ranged from 26 to 75% using a membrane-filtration/immuno-fluorescence assay procedure. Test sensitivities ranged from < 0.02 to < 5.0 cysts per 100 1. No definite distribution pattern resulted.

Keywords Distributiom; Giardia;New Zealand waters distribution; Giardia; New Zealand * to whom correspondence should be addressed M91072 Received 8 October 1991; accepted 10 April 1992

New Zealand Journal of Marine and Freshwater Research, 1992, Vol. 26: The Royal Society of New Zealand 1992
Received 8 October 1991; accepted 10 April 1992

PDF file of entire paper: medium quality (255K); (scanned from paper original: notes about this process)

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