Investigation of systemic isosporosis outbreaks in an aviary of greenfinch (Carduelis chloris) and goldfinch (Carduelis carduelis) and a possible link with local wild sparrows (Passer domesticus)

Investigation of systemic isosporosis outbreaks in an aviary of greenfinch (Carduelis chloris) and goldfinch (Carduelis carduelis) and a possible link with local wild sparrows (Passer domesticus)

Case Report An outbreak of systemic isosporosis caused mortalities in greenfinches (Carduelis chloris) and goldfinches (Carduelis carduelis) kept in an aviary in the western suburbs of Melbourne. The following year, a further outbreak in the same aviary occurred in a different flock of goldfinches....

Full description

Saved in:
Bibliographic Details
Published in:Australian veterinary journal Vol. 98; no. 7; pp. 338 - 344
Main Authors: Gosbell, MC, Olaogun, OM, Luk, KHY, Noormohammadi, AH
Format: Journal Article
Language:English
Published: Melbourne Wiley Publishing Asia Pty Ltd 01-07-2020
Wiley Subscription Services, Inc
Subjects:
atoxoplasmosis
Carduelis carduelis
Carduelis chloris
coccidiosis
Duodenum
Electron microscopy
finches
Isospora
Lamina propria
Lymphocytes
Microscopy
Outbreaks
Passer domesticus
Sequence analysis
systemic coccidiosis
systemic isosporosis
Isospora
systemic coccidiosis
atoxoplasmosis
coccidiosis
finches
systemic isosporosis
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Case Report An outbreak of systemic isosporosis caused mortalities in greenfinches (Carduelis chloris) and goldfinches (Carduelis carduelis) kept in an aviary in the western suburbs of Melbourne. The following year, a further outbreak in the same aviary occurred in a different flock of goldfinches. At the time of the second outbreak, dead and sick common sparrows (Passer domesticus) discovered near the aviary were also found to have systemic isosporosis. Method The systemic isosporosis was investigated and described using histopathology, electron microscopy and sequence analysis of the 18s gene. Results Isospora spp. infecting the greenfinch and the goldfinch caused significant thickening of the duodenal lamina propria. Measurements in the goldfinches showed an inverse correlation coefficient between the thickening of the duodenum and the weightof the birds. Electron microscopy confirmed the presence of Isospora spp. within lymphocytes migrating into the lamina propria of the duodenum. Analysis of the 18s sequence discovered two different gene sequences across the three species of birds that didn't completely match any sequences previously deposited in GenBank. Conclusion Although the sparrows were found to have died from causes other than systemic Isospora, molecular studies of samples from their liver revealed the presence of an Isospora with 18s gene sequence identical to that found in the captive greenfinches.
Bibliography:ObjectType-Case Study-2
SourceType-Scholarly Journals-1
ObjectType-Feature-4
content type line 23
ObjectType-Report-1
ObjectType-Article-3
ISSN:0005-0423
1751-0813
DOI:10.1111/avj.12947