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Welcome to the technical sessions schedule for the 2015 SEAFWA Annual Meeting.

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Tuesday, November 3 • 4:40pm - 5:00pm
Contribution, Size and Diet of Stocked Largemouth Bass in Three Aquatic Vegetation Types in Toledo Bend Reservoir

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Daniel E. Ashe, M. Todd Driscoll, J. Warren Schlechte -Texas Parks and Wildlife Department

Texas Parks and Wildlife Department stocks Toledo Bend Reservoir annually with juvenile Florida Largemouth Bass (Micropterus salmoides floridanus). Studies suggest that Largemouth Bass stockings often result in variable and low contributions to cohort abundance. We explored effects of aquatic vegetation on stocking success by stocking juvenile Florida Largemouth Bass marked with a pelvic fin clip in three species of aquatic vegetation (hydrilla Hydrilla verticillata, coontail Ceratophyllum demersum, and Eurasian watermilfoil Myriophyllum spicatum) in Toledo Bend Reservoir. Stocking sites received 10,000 fingerlings (mean TL=35 mm) and consisted of 2 km of contiguous habitat. Study sites were stocked in May-June 2010 (n=6) and May-June 2013 (n=5) and sampled with boom mounted electrofishing 3-weeks post-stocking. Contribution of stocked fish was estimated. Diet and size of the stocked fish were compared to that of naturally produced fish. Contribution of stocked fish ranged from 0-10% across all sites (mean=3.2%) and no significant differences were detected among the three aquatic vegetation types. We detected no significant differences between total length or diet of stocked and naturally produced fish among the different vegetation types. Our agency protocol for stocking Florida Largemouth Bass is to stock fingerlings into the best littoral habitat without specifying vegetation type. Our results support the continuation of this protocol as there were no differences in contribution, total length, or diet of stocked fish by vegetation type. Results of this study relative to contribution of stocking efforts were similar to previous studies.

Tuesday November 3, 2015 4:40pm - 5:00pm EST
Victoria

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