I would like to introduce myself my name is Jeff Judd and I am a second
year doctoral student in the lab of Dr. Deborah Penry at U. C. Berkeley. My
work focuses on the digestive physiology of deposit feeders. Our lab
approaches questions from a physiological ecology view point, examining the
interactions between an organisms physiology and its environment. The two
general questions I am asking are:
(1) How do variations in food supply (amount) and composition (type) affect
digestive performance and rate of gain in deposit feeding organisms.
(2) What portion of the patterns seen in digestive processes are a result
of phylogenetic history.
The animal model I am using is Arenicola brasiliensis . My work can be
divided into 4 general areas,
(1) A seasonal field survey of enzymes and potential food resources
(2) The digestive physiology of Arenicola in controlled laboratory experiments
(3) The phylogeny of the arenicolidae
(4) Generalization of the results to other feeding guilds of benthic organisms
* deposit feeding worms vs deposit feeding clams
* deposit feeding clams vs suspension feeding clams
Jeffrey R. Judd
3060 Valley Life Sciences
University of California Berkeley
Berkeley, CA 94720
(510) 642-8690
http://violet.berkeley.edu/~jrjudd
