Movement and feeding ecology of recently emerged steelhead in Lake Ontario tributaries
Journal of Applied Ichthyology
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Abstract
Steelhead (Oncorhynchus mykiss) ascend several Lake Ontario tributaries to spawn and juveniles are often the most abundant salmonid where spawning is successful. Movement and diet of recently emerged subyearling steelhead were examined in three New York tributaries of Lake Ontario. Downstream movement occurred mainly at night and consisted of significantly smaller fry that were feeding at lower levels than resident fry. Fry fed at the highest rate during the day and chironomids and baetids were the main components of their diet. The diet composition of steelhead fry was closely associated with the composition of the benthos in Trout Brook but more similar to the composition of the drift in the other streams. Daily ration was similar among streams, ranging from 10.2 to 14.3%. These findings are consistent with previous findings on the ecology of steelhead fry, as well as fry of other salmonid species
Suggested Citation
Johnson, J.H., McKenna, J., and Douglass, K.A., 2012, Movement and feeding ecology of recently emerged steelhead in Lake Ontario tributaries: Journal of Applied Ichthyology, v. 29, no. 1, p. 221-225, https://doi.org/10.1111/jai.12032.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Movement and feeding ecology of recently emerged steelhead in Lake Ontario tributaries |
| Series title | Journal of Applied Ichthyology |
| DOI | 10.1111/jai.12032 |
| Volume | 29 |
| Issue | 1 |
| Publication Date | September 18, 2012 |
| Year Published | 2012 |
| Language | English |
| Publisher | Wiley |
| Publisher location | Hoboken, NJ |
| Contributing office(s) | Great Lakes Science Center |
| Description | 5 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Applied Ichthyology |
| First page | 221 |
| Last page | 225 |
| Additional Online Files (Y/N) | N |