GRANT
NUMBER:
NA77FD0062
NMFS NUMBER:
96-SER-005
REPORT
TITLE: A Cooperative Interstate Study to
Evaluate Non-Reporting Rate of Recreational Anglers Who
Capture Tagged Red Drum
AUTHOR:
Smith, Theodore I. J., and Woodward, Arnold G.
PUBLISH
DATE: March 8, 1999
AVAILABLE
FROM: National Marine Fisheries Service,
Southeast Region, 9721 Executive Center Drive N., State/Federal
Liaison Office, St. Petersburg, FL 33702. TELEPHONE:
(727) 570-5324
ABSTRACT

Hatchery produced
red drum (Sciaenops ocellatus), from wild adults
were grown to legal size (>14" TL) and used to
evaluate angler non-reporting of tagged red drum in South
Carolina (SC) and Georgia (GA). A total of 1,800
fish were divided into 12 groups of 150 fish; each group
contained 75" Reward" tags and 75 "$100
Reward" tags. Fish were stocked at 3 sites
within each of 2 estuaries in each state (n=4estuaries,
12 stocking sites). Based on the assumption that the $100
tag reward level reflected a reporting level of 100%,
the tag return level for "Reward" tags was subtracted
from the theoretical 100% level to estimate the non-reporting
level for each site. Overall reporting level for
tagged fish (reward and $100 reward tags combined) in
SC was 22.7 + 6.4%, which was not significantly different
from that reported in GA 25.8 + 14.1%. When all
data were pooled by reward message, and no data adjustments
were made for potential biases, SC had a non-reporting
level of 22.1% and GA had a non-reporting level of 25.0%.
When the data were partitioned and adjusted for potential
biases using ancillary verbal survey information, 14.3
+ 5.2% of the reward tags were reported in SC as compared
to 25.5 + 5.6% for the $100 Reward tags yielding a non
reporting level of 41%. A similar pattern was also observed
in GA where significantly fewer Reward tags (19.1 + 10.6%)
were reported compared to $100 Reward tags (30.1 + 15.6%).
This resulted in a non-reporting level of 37% in GA.
Non-reporting levels between sites were highly variable
and ranged from 18-81% among all sites. Based on
the study data, the currently used non-reporting level
of 50% appears to be an over-estimation of the current
level of non-reporting. It is believed that non-reporting
levels of 41% in SC and 37% in GA more accurately reflect
present non-reporting levels.