7 research outputs found
Effect of Aquathol K Treatments on Activity Patterns of Largemouth Bass in Two Coves of Lake Seminole, Georgia
Thirty largemouth bass (
Micropterus salmoide
s Lacepde)
were implanted with radio tags in late October 2003 in two
coves of Lake Seminole, Georgia, and tracked over a 24-hour
period about every 10 days to determine their response to
herbicide application. After five weeks of tracking, hydrilla
(
Hydrilla verticillata
Royle) in each cove was treated in early
December 2003 with dipotassium salt of endothall (Aquathol
K; 7-oxabicyclo [2.2.1] heptane-2,3-dicarboxylic acid) at a
rate of 3.5 ppm. Largemouth bass were tracked during application
and tracking continued for three months post treatment
to assess effects of herbicide treatment on activity
patterns. The treatment in Desser Cove successfully reduced
hydrilla in approximately half the cove. However, the treatment
in Peacock Lake completely eliminated all submersed
aquatic vegetation (SAV) by April 2004. Movement and activity
centers remained similar between treatment periods in
Desser Cove, but increased after treatment in Peacock Lake.
Depth occupied by telemetered fish decreased after
Aquathol K treatment in both coves. In general, behavior of
largemouth bass did not change appreciably during treatment,
and only minor changes were observed in the posttreatment
period in Peacock Lake, where all SAV was eliminated.
Fish showed little attraction to or movement away
from treatment areas, and fish migration from either cove
was nil after treatment. Application of Aquathol K and subsequent
reduction of SAV had little effect on largemouth bass
behavior or movement. (PDF has 8 pages.
Population Characteristics of Largemouth Bass Associated with Changes in Abundance of Submersed Aquatic Vegetation in Lake Seminole, Georgia
Population characteristics of largemouth bass (
Micropterus
salmoides
L.) including growth, body condition (relative
weight), survival, and egg production were examined in relation
to abundance of submersed aquatic vegetation (SAV)
coverage (primarily hydrilla [
Hydrilla verticillata
L.f. Royle])
in three embayments of Lake Seminole, GA, and compared
to a previous study conducted in 1998. (PDF has 8 pages.
Changes in Behavior, Movement, and Home Ranges of Largemouth Bass Following Large-scale Hydrilla Removal in Lake Seminole, Georgia
About 1,200 ha of hydrilla (
Hydrilla verticillata
L.f. Royle)
was eliminated in the Spring Creek embayment of Lake Seminole,
Georgia, using a drip-delivery application of fluridone
(1- methyl-3-phenyl-5-[3-(trifluoromethl) phenyl]-4(1H)-pyridinone)
in 2000 and 2001.
Two groups of 15 and 20 largemouth
bass (Micropterus salmoides Lacepede) were implanted
with 400-day radio tags in February 2000 and 2001 to determine
changes in movement and behavior before and after
hydrilla reduction.(PDF contains 8 pages.