Occurrence of Glugea pimephales in planktonic larvae of fathead minnow in Algonquin Park, Ontario.
J Aquat Anim Health
; 21(3): 164-6, 2009 Sep.
Article
in En
| MEDLINE
| ID: mdl-20043401
ABSTRACT
The microsporidian Glugea pimephales was found parasitizing larval fathead minnow Pimephales promelas in Scott Lake, Algonquin Park, Ontario. These fish were estimated to be 2-3 weeks posthatch and, given the development time of the parasite, must have acquired infection soon after commencement of exogenous feeding. Histological sections revealed that the parasite typically developed in loose connective tissue between the peritoneum and the dermis of the abdominal cavity, with protruding xenomas of up to 2.6 mm in diameter forming near the vent. Prevalence was estimated at 1% by divers performing snorkel surveys along the lake shoreline. Divers following schools of fathead minnow consistently reported that larvae with the obvious cysts wobbled during swimming and that infected fish were typically located at the back of the dispersing school. This case history joins a growing list of studies suggesting that fish can become infected with parasites soon after hatch, the potential importance of which has not been critically studied.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Cyprinidae
/
Microsporidiosis
/
Glugea
/
Fish Diseases
Type of study:
Risk_factors_studies
Limits:
Animals
Country/Region as subject:
America do norte
Language:
En
Journal:
J Aquat Anim Health
Journal subject:
MEDICINA VETERINARIA
Year:
2009
Document type:
Article
Affiliation country:
Canada