Dear all,
I'm going to estimate the food selectivity of some fishes and I'd like
to adopt the food selectivity index of Berg (1979).
This index utilises the numerical abundance of food items, measured both
in the gut and in the habitat.
Nonetheless, a considerable percentage of food items is NOT countable
(e.g. detritus, plant material)...
My question is: would it be a feasible option to utilise a measure of
bulk of food items (e.g. volume) instead of amounts?
Is anyone aware of any other indexes of food selectivity that could be
adopted with non-countable items?
Any suggestion will be more than welcome!
All the best,
Gianluca
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Gianluca Polgar Ph.D.
Senior lecturer
Institute of Biological Sciences
Institute of Ocean and Earth Sciences
Faculty of Science, University of Malaya
50603 Kuala Lumpur, Malaysia
Tel.: 017-6223549
Fax (ISB): 03-79674178
e-mail: [email protected]
www.themudskipper.org
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