Publications

comparative phylogeography of mesoamerican highland rodents: concerted versus independent response to past climatic fluctuations.	the phylogeography of sumichrast's harvest mouse (reithrodontomys sumichrasti) was examined through maximum-likelihood and parsimony analyses of 1,130 bp of mitochondrial cytochrome b sequence data from 43 individuals. the phylogeography of this middle american highland forest-dwelling species was compared to that previously published for the codistributed aztec deer mouse complex (peromyscus aztecus/peromyscus hylocetes complex) in order to test competing hypotheses of concerted versus independ ...	2000	10805642
lack of immunological responsiveness to photoperiod in a tropical rodent, peromyscus aztecus hylocetes.	non-tropical rodents undergo seasonal changes in immune function and disease. it has been hypothesized that seasonal fluctuations in immunity of non-tropical rodents are due to suppressed immune function during harsh winter conditions. a logical extension of this hypothesis is that seasonal changes in immunity should be reduced or absent in tropical rodents that do not experience marked seasonal fluctuations in environmental conditions; however this hypothesis remains to be tested. the present s ...	2003	12624655