The Use of Ultrasonic Telemetry and Simulation Modeling to Determining Blue
Crab Population Dynamics in a Georgia Salt Marsh Estuary
Amanda Wrona and the late Richard Wiegert (Dept of Marine Sciences, Univ of
Sea Grant College Program (R/FS-7-PD)
Previous and current efforts to manage the
blue crab populations in Georgia are based on historical information and limited
biological research. This research has focused mostly on describing and quantifying
the blue crab substock, which includes collecting data on distribution, seasonal
abundance and size composition.
There are many examples of traditional fisheries
models that have been proven to be insufficient tools for predicting blue crab
population dynamics all along the Atlantic and Gulf coast of North America. Future
management models must include the expansion of the knowledge base about the
species by the inclusion of biological as well as population data. Currently,
scientists are far from developing an ecological model of blue crabs because
a comprehensive understanding of blue crab biology in Georgia does not exist.
Life history characteristics are poorly documented or in some cases not known.
of this project are to:
habitat of blue crabs, Callinectes sapids, with the use of ultrasonic
1) Eleven crabs were fitted with the molting transmitters, 8 of which were
successfully tracked to their molting habitat during July and August, 2002.
2) GIS is currently being used to analyze the data and provide visual displays
of the data.
A. B. Wrona, 2004. Understanding population dynamics of the blue crab, Callinectes
sapidus, in a Georgia estuary. Ph.D. dissertation, University of Georgia.
The use of ultrasonic
telemetry and a GIS to determine essential habitat of Blue crabs, Callinectes
sapidus in a Georgia salt marsh estuary. Wrona, A.B., R.G. Wiegert, J. Godwin,
and K. Payne. In Preparation.