A5019660658- Species Distribution and Climate Change
- Amphibian and Reptile Biology
- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
- Primate Behavior and Ecology
- Bat Biology and Ecology Studies
- Parasite Biology and Host Interactions
- Animal and Plant Science Education
- Dermatological diseases and infestations
- Vector-borne infectious diseases
- Fish biology, ecology, and behavior
McGill University
2017-2023
Universidad Tecnológica Indoamérica
2022-2023
Centro Jambatu de Investigación y Conservación de Anfibios
2012-2021
Ecological Society of America
2020
John Wiley & Sons (United States)
2020
Pontificia Universidad Católica del Ecuador
2011
We review the systematics of species Gastrotheca (Anura: Hemiphractidae) in highlands southern Ecuadorian Andes. analyzed phylogenetic, morphological, ecological, and acoustic data from populations region. provide an updated phylogenetic hypothesis inferred a database that contains 42 Gastrotheca, sequences mitochondrial (12S, 16S, ND1) nuclear (POMC RAG-1) genes. describe four new endemic biphasic for Ecuador (Gastrotheca cuencana, G. elicioi, turnerorum, yacuri). In addition, we redefine...
Abstract Remote locations, such as oceanic islands, typically harbour relatively few species, some of which go on to generate endemic radiations. Species colonising these locations tend be a non‐random subset from source communities, is thought reflect dispersal limitation. However, colonisation could also result habitat filtering, whereby only continental species can become established. We evaluate the imprints processes Galápagos flora by analysing comprehensive regional phylogeny for ~ 39...
Ecuador is one of the most biodiverse countries in world, but faces severe pressures and threats to its natural ecosystems. Numerous species have declined require be objectively evaluated quantified, as a step towards development conservation strategies. Herein, we present an updated National Red List Assessment for amphibian Ecuador, with detailed complete coverages any Ecuadorian taxonomic group date. Based on standardized methodologies that integrate work, spatial analyses, ecological...
We review the systematics of frogs Hyloscirtus larinopygion group. A new phylogenetic tree inferred frommitochondrial DNA (partial sequences 12S rRNA, valine-tRNA, and 16S rRNA genes; ~2.3 kb) eleven species ofthe H. group is provided, based on maximum parsimony, likelihood, Bayesian analyses. Ourphylogeny confirms close relationship members with Andean relatives H.armatus group, which also occurs in Andes. tapichalaca placed as sister to rest H.larinopygion two clades (A+B) are evident....
Abstract Predator–prey interactions play a key role in the evolution of species traits through antagonistic coevolutionary arms races. The beak morphology Darwin's finches response to competition for seed resources is classic example by natural selection. seeds Tribulus cistoides are an important food source largest ground finch ( Geospiza fortis , G. magnirostris and conirostris ) dry months, hard spiny fruits potent agent selection that drives contemporary evolutionary change morphology....
Abstract Island systems have long served as a model for evolutionary processes due to their unique species interactions. Many studies of the evolution interactions on islands focused endemic taxa. Fewer how antagonistic and mutualistic shape phenotypic divergence widespread nonendemic living islands. We used plant Tribulus cistoides (Zygophyllaceae) study in traits that mediate with vertebrate granivores (birds) pollinators, including this is explained by bioclimatic variables. both...
Approximately 400 specimens of a previously undescribed species Pseudosonsinotrema sp. (Digenea: Pleurogenidae) were collected from Paramo marsupial frog, Gastrotheca pseustes (Anura: Hemiphractidae), the Museo de Zoología Pontificia Universidad Católica del Ecuador, Quito, Ecuador. The new digenean species, megalorchis n. sp., can be distinguished others in genus primarily by its large testes. Flukes attached to mucosa host's intestine cause ulcerative enteritis and become embedded...