A5022654140- Amphibian and Reptile Biology
- Animal Behavior and Reproduction
- Avian ecology and behavior
- Bird parasitology and diseases
- Turtle Biology and Conservation
- Microplastics and Plastic Pollution
- Genetic diversity and population structure
- Species Distribution and Climate Change
- Mosquito-borne diseases and control
- Viral Infections and Vectors
- Marine animal studies overview
- Animal Ecology and Behavior Studies
- Plant and animal studies
- Marine and fisheries research
- Bat Biology and Ecology Studies
- Wildlife Ecology and Conservation
- Photovoltaic System Optimization Techniques
- Human-Animal Interaction Studies
- Climate variability and models
- Fish Ecology and Management Studies
- Vector-borne infectious diseases
- Identification and Quantification in Food
- Insect Utilization and Effects
- Rabies epidemiology and control
- Solar Thermal and Photovoltaic Systems
Universidad San Francisco de Quito
2016-2025
Charles Darwin Foundation
1987-2025
North Carolina State University
2020-2025
University of the Sunshine Coast
2020-2025
Galapagos (Belgium)
2021
Wildlife Conservation Society
2019
Baptist Hospital of Miami
2018
Baptist Health South Florida
2018
University of North Carolina at Chapel Hill
2018
Hospital Oncológico Docente "Conrado Benítez García"
1994
Recent adaptive radiations are models for investigating mechanisms contributing to the evolution of biodiversity. An unresolved question is relative importance new mutations, ancestral variants, and introgressive hybridization phenotypic speciation. Here, we address this issue using Darwin’s finches investigate genomic architecture underlying their diversity. Admixture mapping beak body size in small, medium, large ground revealed 28 loci showing strong genetic differentiation. These...
Plastic pollution (PP) is an ongoing, pervasive global problem that represents a risk to the Galápagos archipelago, despite it being one of world's most pristine and well-protected regions. By working closely with citizen scientists, we aimed quantify map magnitude biological effects PP. With macroplastic abundance ranging from 0.003 2.87 items/m 2 , our research indicates all five sampled bioregions are contaminated PP along their coastlines. The distribution this debris not uniform,...
To determine whether Telemedicine intervention can affect hospital mortality, length of stay, and direct costs for progressive care unit patients.Retrospective observational.Large healthcare system in Florida.Adult patients admitted to (PCU) as their primary admission between December 2011 August 2016 (n = 16,091).Progressive with telemedicine (telemedicine PCU [TPCU]; n 8091) without control (nontelemedicine [NTPCU]; 8000) were compared concurrently during study period.Primary outcome was...
Plastic pollution, and its associated impacts on marine fauna due to chemical contamination, is an area of growing global concern. We analyzed 145 preen gland oil samples from 32 seabird species belonging 8 families with different foraging habits life history strategies around the world for plastic additives legacy persistent organic pollutants. The included two brominated flame retardants (decabromodiphenyl ether, BDE209; decabromo diphenyl ethane, DBDPE) six benzotriazole UV stabilizers...
The Galápagos blue-footed booby (Sula nebouxii excisa) is a sulid species endemic to the archipelago. Here we present physical examination, breeding status, hematology, and blood chemistry results from 60 boobies that were captured by hand their nesting site on North Seymour Island in June 2017 July 2022. A portable analyzer (iSTAT) was used obtain values field for hematocrit, hemoglobin, sodium, potassium, chloride, ionized calcium, total CO2, glucose, urea nitrogen, creatinine, anion gap...
October 1982 through July 1983, the Galapagos Islands experienced strongest El Niño‐Southern Oscillation (ENSO) event yet recorded, with heavy rains and a warm, unproductive ocean. During this period most seabirds did not breed, many left archipelago altogether. Dark‐rumped petrels which breed during demonstrated low growth rate of chicks. Censuses observations substantial population decreases other ENSO. Magnificent frigate birds suffered decreased nesting success, while blue‐footed boobies...
The 1982-83 El Niño/Southern Oscillation was the most severe recorded in tropical Pacific Ocean. It a period of low ocean productivity. Many seabirds Galapagos Islands, including Penguin (Spheniscus mendiculus) and Flightless Cormorant (Nannopterum harrisi), did not breed. cormorant penguin populations were reduced by 49 77%, respectively. Greater Flamingo (Phoenicopterus ruber) population size remained unchanged. Between July 1983 September 1984, recovered whereas had recovered.
Introduction: Threats that affect the avian diversity on Galápagos Islands are increasing. We evaluated threats such as climate change and severe weather, human intrusions disturbance, biological resource use, invasive other problematic species, genes diseases, pollution, geological events loss of genetic in relation with species enlisted both international national (Ecuador) IUCN Red List, which can be used sentinel ecosystem. Here, status threatened for next ten years (present time up to...
The Jambato Harlequin toad (
The great frigatebird, Fregata minor, is a widely distributed seabird native to the Galápagos archipelago. Haematology and blood chemistry parameters have been published for this species but not from San Cristóbal North Seymour frigatebird breeding colonies. Analyses were run on samples drawn 25 frigatebirds captured by hand at their nests Punta Pitt Island 30 birds Island, Islands. A portable analyser (iSTAT) was used obtain near immediate field results pH, pO2, pCO2, TCO2, HCO3- ,...
The San Cristóbal lava lizard, Microlophus bivittatus, is one of nine species lizards endemic to the Galápagos Islands Ecuador. No information presently exists about baseline health parameters for any these species. We analysed blood samples drawn from 47 (25 males and 22 females) captured at two locations on Island. A portable analyser (iSTAT) was used obtain near-immediate field results total CO2, lactate, sodium, potassium, ionized calcium, glucose haemoglobin. Standard laboratory...
Toxoplasma gondii is a zoonotic intracellular parasite of particular concern in the conservation wildlife due to its ability infect all homeotherms and potentially cause acute fatal disease naive species. In Galapagos (Ecuador), an archipelago composed more than hundred islets islands, presence T . can be attributed human-introduced domestic cats, but little known about transmission populations. We compared prevalence antibodies against sympatric wild bird species that differ diet contact...
The red-footed booby ( Sula sula) is a widely distributed sulid native to the Galápagos archipelago. Hematology and blood chemistry parameters have been published for this species, but not from San Cristóbal rookery. Analyses were run on samples drawn 31 manually restrained boobies that captured by hand their nests at Punta Pitt Island. A portable analyzer (iSTAT) was used obtain near immediate field results pH, partial pressure of oxygen, carbon dioxide, bicarbonate, hematocrit, hemoglobin,...
The population structure and effective size of the Galapagos Cormorant (Compsohalieus [Nannopterum] harrisi), a rare seabird endemic to Galapogos Islands, Ecuador, were investigated using standard demographic techniques data collected over nine years (1970‐1973, 1977, 1978, 1989‐1992). study was located around Punta Espinosa, Fernandina Island, where cormorants bred at seven traditional places scattered along 9 km bare rocky coastline. This population, averaging 96 ± 13 adults (mean 1 SD)...
The Galápagos shearwater, Puffinus subalaris, is a seabird endemic to the archipelago. Hematology, blood chemistry, and general health parameters have not been published for this species. Analyses were run on samples drawn from 20 clinically healthy shearwaters captured by hand at their nests Islote Pitt San Cristóbal Island in July 2016. A portable analyzer (iSTAT) was used obtain near immediate field results pH, pO2, pCO2, TCO2, HCO3-, hematocrit, hemoglobin, sodium, potassium, chloride,...
We examined how dietary factors recorded by C and N influence Hg uptake in 347 individuals of yellowfin tuna (Thunnus albacares), an important subsistence resource from the Galápagos Marine Reserve (Ecuador) Ecuadorian mainland coast 2015-2016. found no differences total (THg) measured red muscle between two regions seasonal differences, likely due to age fish slow elimination rates Hg. Our THg concentrations are comparable those other studies Pacific (0.20-9.60 mg/kg wet wt), but a subset...
Yellowfin tuna, Thunnus albacares , is an important global fishery and of particular importance in the Eastern Pacific Ocean (EPO). According to 2019 Inter-American Tropical Tuna Commission (IATTC) assessment, yellowfin tuna within EPO a single stock, being managed as one stock. However, previous studies indicate site fidelity, or limited home ranges, which suggests potential for multiple stocks EPO, was supported by population genetic study using microsatellites. If numerous are present,...
Discriminating between conspecific and heterospecific communication signals has important implications for evolution. The benefits of such discriminations are clear sympatric congeners, but if display recognition (CDR) a cost, it should be relaxed in species that have evolved isolation. Of the nine lava lizard (Microlophus spp.) endemic to Galápagos Islands, all thought allopatry none overlap geographic distribution. Although prior research failed reveal CDR male M. grayii on Floreana...
Females of some lizard species exhibit conspicuous coloration during the breeding cycle (“nuptial coloration”) that elicits male courtship. We conducted two field experiments with San Cristóbal Lava Lizards (Microlophus bivittatus) in Galápagos Islands to determine how presence and extent nuptial on robots affected responses adult males females. Robots programmed perform conspecific bobbing displays had a morphological appearance mimicked (1) female without (non-red control stimulus); (2)...