Antibacterial properties of tropical plants from Puerto Rico.

From document to monument: the School of Tropical Medicine of the University of Puerto Rico.

The Historical Antecedents of the UPR School of Tropical Medicine.

This article deals with the historical antecedents of the University of Puerto Rico (UPR) School of Tropical Medicine (STM) under the auspices of Columbia University. It presents a general view of the social, institutional and conceptual factors that were correlated with the establishment of the STM. The authors start by examining the historical continuities and discontinuities present during t...

Microbial infection affects egg viability and incubation behavior in a tropical passerine

Mark I. Cook, Steven R. Beissinger, Gary A. Toranzos, Roberto A. Rodriguez, and Wayne J. Arendt Ecosystem Sciences Division, Department of Environmental Science, Policy and Management, 151 Hilgard Hall 3110, University of California, Berkeley, CA 94720, USA, Department of Biology, Box 23360, University of Puerto Rico, San Juan, PR 00931, Puerto Rico, and International Institute of Tropical Fore...

Species Diversity of Puerto Rican Heterotermes (Dictyoptera: Rhinotermitidae) Revealed by Phylogenetic Analyses of Two Mitochondrial Genes

The goal of this study was to infer Heterotermes (Froggatt) (Dictyoptera: Rhinotermitidae) species diversity on the island of Puerto Rico from phylogenetic analyses of DNA sequence data from two mitochondrial genes, 16S rRNA and cytochrome oxidase II (COII). This termite genus is a structural pest known to be well adapted to arid environments in subtropical and tropical regions worldwide includ...

Estimating recharge thresholds in tropical karst island aquifers: Barbados, Puerto Rico and Guam

The hydrology and geochemistry of groundwater in tropical island aquifers, such as Barbados, Guam and Puerto Rico, are significantly influenced by tropical climatic conditions. Recharge to these aquifers is the product of regional and local climate patterns that control rainfall. Oxygen isotopes can be used to estimate the amount and timing of recharge on these islands because seasonal fluctuat...