Search
Now showing items 31-40 of 263
The toxicity of liquid edger herbicide on the brine shrimp Artemia franciscana
(2008)
The effect of 0.0001 and 0.00001 mg/L concentrations of Liquid Edger (LE) herbicide was
evaluated on the parental generation, F1 and F2 of Artemia franciscana. The criteria evaluated
were parental life span, survival to ...
Phylogenetic and taxonomical characterization of microbial populations putatively capable of autotrophic ammonia oxidation from marine, saline and hypersaline environments at the Cabo Rojo Salterns, Puerto Rico
(2016)
Autotrophic ammonia oxidation has been studied over the years and several enzymes involved in this metabolism have been identified. This metabolism has been detected in several environments, but there are no reports of it ...
Fungal diversity present at a hypersaline environment in Cabo Rojo, Puerto Rico, determined by characterization of isolates and analysis of environmental rRNA genes clones libraries
(2006)
Solar salterns are a thalassohaline environment where sea water is evaporated to obtain salt for commercial purposes. The prokaryotic diversity on these places has been extensively studied world wide. However, there are ...
Microbial diversity of a fluidized-bed bioreactor treating diesel-contaminated groundwater (Vega Baja, Puerto Rico)
(2006)
Culture and culture-independent techniques were used to characterize the microbial
community structure within a fluidized bed reactor (FBR) used to remediate a dieselcontaminated
aquifer. Under normal operating conditions, ...
Fluorescence-based assessment of total protease activity/trypsin as a function of variable soybean content in fines fed to the gray tilapia (Oreochromis niloticus) and the red tilapia (Oreochromis hornorum)
(2007)
This study evaluated the effect of five diets, differing from one another based upon ratio of
raw soybean/processed soybean content, upon both biomass production and intestinal
protease activity in gray tilapia (Oreochromis ...
Assessing origin and genetic diversity through maternal lineages and "Gait Keeper" (DMRT3) frequency of Puerto Rican horses
(2016)
Since their domestication, horses demonstrated their usefulness for transportation, warfare, agriculture, sports and even companionship, earning a central role in human history. Over the centuries, horse breeds have 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. ...
Brioflora sobre taludes del transecto Mayagüez-Maricao (Puerto Rico)
(2003)
The bryoflora was determined on roadside banks along the transect Mayagüez-Maricao
that begins in the municipality of Mayagüez at an elevation of 15 m on highway 108 and
culminates in the municipality of Maricao on highway ...
Biotic and abiotic factors affecting calling activity at traditional breeding ponds of Puerto Rican crested toads (Bufo [Peltophryne] lemur) in Quebradillas, Puerto Rico
(2007)
The apparent decline in amphibian populations worldwide has driven the need to
establish more effective monitoring strategies. Puerto Rico has experienced the loss of three
species of amphibians, and a decline in six ...
Genetic diversity and differentiation of Cassava (Manihot esculenta Crantz) accessions in Puerto Rico
(2010)
Cassava is consumed daily by 600 million people living in the poorest places in Africa, Asia
and South America. Natural genetic variation that exists among different cultivars of cassava
has been studied in order to ...