| Abstract: | Daily consumption was estimated from the stomach contents of walleyes Sander vitreus collected weekly from Oneida Lake, New York, during June-October 1975, 1992, 1993, and 1994 for one to four age-groups per year. Field rations were highly variable between weeks, and trends in ration size varied both seasonally and annually. The coefficient of variation for weekly field rations within years and ages ranged from 45% to 97%. Field estimates were compared with simulated consumption from a bioenergetics model. The simulation averages of daily ration deviated from those of the field estimates by -20.1% to +70.3%, with a mean across all simulations of +14.3%. The deviations for each time step were much greater than those for the simulation averages, ranging from -92.8% to +363.6%. A systematic trend in the deviations was observed, the model producing overpredictions at rations less than 3.7% of body weight. Analysis of variance indicated that the deviations were affected by sample year and week but not age. Multiple linear regression using backwards selection procedures and Akaike‘s information criterion indicated that walleye weight, walleye growth, lake temperature, prey energy density, and the proportion of gizzard shad Dorosoma cepedianum in the diet significantly affected the deviations between simulated and field rations and explained 32% of the variance. ?? Copyright by the American Fisheries Society 2008. |
| Genre: | Article |
| ProdID: | 70033286 |
| Citation Author: | Lantry, B. F.; Rudstam, L. G.; Forney, J. L.; VanDeValk, A. J.; Mills, E. L.; Stewart, D. J.; Adams, J. V. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 1421 |
| Citation Issue: | 5 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Transactions of the American Fisheries Society |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 16 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Comparisons between consumption estimates from bioenergetics simulations and field measurements for walleyes from Oneida Lake, New York; 2008; Article; Journal; Transactions of the American Fisheries Society; Lantry, B. F.; Rudstam, L. G.; Forney, J. L.; VanDeValk, A. J.; Mills, E. L.; Stewart, D. J.; Adams, J. V. |
| Citation Start Page: | 1406 |
| Citation Volume: | 137 |
| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Comparisons between consumption estimates from bioenergetics simulations and field measurements for walleyes from Oneida Lake, New York; 2008; Article; Journal; Transactions of the American Fisheries Society; Lantry, B. F.; Rudstam, L. G.; Forney, J. L.; VanDeValk, A. J.; Mills, E. L.; Stewart, D. J.; Adams, J. V. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1577/T07-051.1 |
| Date Other: | Tue, 1 Jan 2008 00:00 -0600 |
| Publisher: | |
