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Environmental factors influencing trematode prevalence in grey tree frog (Hyla versicolor) tadpoles in southern Ontario.
- Source :
-
The Journal of parasitology [J Parasitol] 2006 Oct; Vol. 92 (5), pp. 997-1001. - Publication Year :
- 2006
-
Abstract
- The emergence or increased prevalence of various parasites may be linked to alterations in host-parasite interactions caused by environmental changes. We investigated prevalence of trematode infections in grey tree frog (Hyla versicolor) tadpoles from ponds in nonagricultural settings versus ponds adjacent to cornfields in southern Ontario. We found that agricultural activity was a significant factor in determining the percentage of tadpoles infected by 1 or more trematodes from 1 or more species (combined trematode infection). However, we found no associations between combined trematode infection and forest cover; pond size; road density; and measures of water quality, such as nitrate level and the presence of the herbicide atrazine. Although combined trematode prevalence was associated only with agricultural activity, prevalence of Alaria species showed a positive association with forest cover. This latter result probably reflects the importance of habitat suitability for the canid definitive hosts of this trematode species.
- Subjects :
- Analysis of Variance
Animals
Atrazine analysis
Crops, Agricultural
Fresh Water
Herbicides analysis
Host-Parasite Interactions
Larva parasitology
Linear Models
Nitrates analysis
Ontario epidemiology
Prevalence
Trees
Trematode Infections epidemiology
Anura parasitology
Environment
Trematode Infections veterinary
Subjects
Details
- Language :
- English
- ISSN :
- 0022-3395
- Volume :
- 92
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- The Journal of parasitology
- Publication Type :
- Academic Journal
- Accession number :
- 17152940
- Full Text :
- https://doi.org/10.1645/GE-771R.1