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Now showing items 11-20 of 137
Net-plankton diatoms of Puerto Rican water reservoirs as potential bioindicators of trophic status
(2014)
Diatoms are a group of unicellular algae enclosed in a siliceous exoskeleton called the frustule. This ornamented structure allows for taxonomic identification. Diatoms are frequently used as indicators to monitor the ...
Consequences of invasive grass removal on above and below ground ecosystem dynamics within abandoned agricultural land in the Laguna Cartagena National Wildlife Refuge, Puerto Rico
(2014)
In the tropics, abandoned pasturelands often remain in an arrested state of succession due to non-native grass invasions. Initial restoration approaches often focus on the direct removal of these species. To test if invasive ...
Comparative genomics of indels in primate lineages and the possible effect of the MET promoter indel on gene expression
(2016)
Approximately six million years ago, the human and chimpanzee lineages diverged from a common ancestor resulting in two distinct species with a great number of different morphological, behavioral, cognitive and other ...
Plant diversity and vegetation structure as factors correlated with parasitoid wasp (Hymenoptera: Braconidae and Ichneumonidae) diversity in a degraded dry forest ecosystem in Puerto Rico
(2013)
Tropical dry forests worldwide have a long history of human use, invasion by non-native species
and degradation. In Puerto Rico, while overall forest cover has increased due to socioeconomic
and land use changes over the ...
Parasitic eggs in ancient coprolites from archeological sites in Puerto Rico
(2012)
Parasites have accompanied the human species since its origin and through their migrations around the world. Evidence of ancient parasitic diseases has been recovered from ancient human remains since 1910. The present work ...
Characterization of protein expression profile during development of the Puerto Rican monarch butterfly Danaus plexippus megalippe f. portoricensis A. Clark, 1941 (Lepidoptera: Danainae)
(2015)
Danaus plexippus megalippe, a non-migratory sub-species of the monarch butterfly, is a resident species in Puerto Rico. Molecular studies in monarch butterflies are fairly scarce and a protein profile has never been ...
Diversity of Actinobacteria associated with common ant species in the Guánica Tropical Dry Forest, Puerto Rico
(2012)
The diversity of Actinobacteria associated with ants that do not grow fungi was determined in the Guánica subtropical dry forest. Actinobacteria produces secondary metabolites used as antibiotics antifungals and antivirals. ...
Chromosomal rearrangements of Psittacidae evolution: zoo-fish in Amazona vittata and in silico analysis of chromosomal rearrangements validated by de novo PCR
(2014)
The Puerto Rican parrot (Amazona vittata, AVI) is a critically endangered species and the only native parrot species remaining on all U.S. territories. After its genome was sequenced through a community-funded project, we ...
The effects of the nanotopography of titanium surfaces on osteoblast adhesion and differentiation
(2013)
The principal problem in current orthopedic implants is their loosening due to poor osseointegration. Many efforts have been made to modify the surface composition and topography of titanium alloy implants to attain improved ...
Detection of integron-encoded integrases in environments with moderate anthropogenic impact from Puerto Rico
(2012)
Integrons are genetic elements with a site-specific recombination system which includes an integrase (IntI) capable of capturing and expressing promoterless, circular DNA molecules known as gene cassettes. Although integrons ...