Diel feeding periodicity of Ephemera simulans nymphs in summer and winter
Journal of Freshwater Ecology
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Abstract
We examined diel feeding periodicity of Ephemera simulans nymphs during summer and winter in a third-order stream in central New York. A total of 245 nymphs were collected at 4-h intervals over two 24 h periods and were immediately preserved in 80% ethanol. In the laboratory, we weighed each nymph and its digestive tract. The ratio of wet weight of the digestive tract to the total body weight at each 4-h interval was used to determine feeding periodicity. Diel feeding periodicity followed a similar pattern in summer and winter and was significantly higher at 08:00 hours. Feeding periodicity of E. simulans in Labrador Creek is asynchronous with the two most abundant fish species in the stream and may reflect predator avoidance behavior that has been shown for other mayfly species.
Suggested Citation
Johnson, J.H., Ruggirello, J.E., Nack, C.C., 2012, Diel feeding periodicity of Ephemera simulans nymphs in summer and winter: Journal of Freshwater Ecology, v. 27, no. 2, p. 305-308, https://doi.org/10.1080/02705060.2012.659221.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Diel feeding periodicity of Ephemera simulans nymphs in summer and winter |
| Series title | Journal of Freshwater Ecology |
| DOI | 10.1080/02705060.2012.659221 |
| Volume | 27 |
| Issue | 2 |
| Year Published | 2012 |
| Language | English |
| Publisher | Taylor & Francis Group |
| Publisher location | London, UK |
| Contributing office(s) | Great Lakes Science Center |
| Description | 4 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Freshwater Ecology |
| First page | 305 |
| Last page | 308 |
| Country | United States |
| State | New York |
| Other Geospatial | Labrador Creek |