We have conducted a behavioral study of YOY largemouth bass from
northern and southern systems and found that northern fish are
considerably more active and consume more (when fed ad lib) than
southern counterparts.  We are planning to put this into the context
of mortality- growth rate trade-offs by developing a predation index
across latitudes.  To do this we need estimates of absolute biomass
of potential predators in northern and southern systems.  A
literature review indicates that there is some data from cove
rotenone studies especially in southern systems, but we have found
precious little on absolute biomass estimates of predators in
northern systems (preferably from northern US and Canada - the limit
of LMB distribution).  We will like to take these data, couple it
with temperature data, size frequency distributions of these
predators, size of YOY LMB, and percentage of fish in predator diets
to get a first cut at risk across latitudes.

If you are aware of grey literature (reports, state documents) or
older refereed literature containing these data (especially absolute
biomass of predators), I would appreciate hearing from you.

Thanks.

Jeff Miner

--
Jeffrey G. Miner, Ph.D.
Associate Professor
Aquatic Ecology and Fisheries Laboratory
Coordinator, Ecology-Ethology Research Station
Graduate Program in Ecology, Evolution, and Conservation Biology
Department of Biological Sciences
Bowling Green State University
Bowling Green, OH 43403
USA
(419) 372-8330   Fax: (419) 372-2024
[log in to unmask]
http://www.bgsu.edu/departments/biology/

"First they ignore you. Then they laugh at you.
Then they fight you. Then you win."

         Gandhi

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