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Epigenetics and the Evolution of Darwin’s Finches
TLDR
The number, chromosomal locations, regional clustering, and lack of overlap of epimutations and genetic mutations suggest that epigenetic changes are distinct and that they correlate with the evolutionary history of Darwin’s finches. Expand
Host resistance and tolerance of parasitic gut worms depend on resource availability
TLDR
This study evaluated how low and high resource diets affect Cuban tree frog resistance and tolerance of a skin-penetrating, gut nematode Aplectana sp. Expand
The herbicide atrazine induces hyperactivity and compromises tadpole detection of predator chemical cues.
TLDR
The results are consistent with previous studies that have demonstrated that ecologically relevant concentrations of atrazine can induce hyperactivity and impair the olfactory abilities of other freshwater vertebrates and call for additional studies examining the role of chemical contaminants in disrupting chemical communication. Expand
Darwin’s finches combat introduced nest parasites with fumigated cotton
TLDR
It is shown that Darwin's finches can be encouraged to 'self-fumigate' nests with cotton fibers that have been treated with permethrin, and nests containing at least one gram of cotton were virtually parasite-free. Expand
Galápagos mockingbirds tolerate introduced parasites that affect Darwin's finches.
TLDR
The results of this study suggest that finches are negatively affected by P. downsi because they do not have such behavioral mechanisms for energy compensation, and mockingbirds are capable of compensation, making them tolerant hosts, and a possible indirect threat to Darwin's finches. Expand
Early-life disruption of amphibian microbiota decreases later-life resistance to parasites
TLDR
Manipulating the microbiota of tadpoles leads to increased susceptibility to parasitic infection in adult frogs, in the absence of substantial changes in the adults’ microbiota, which supports the idea that preventing early-life disruption of host-associated microbiota might confer protection against diseases later in life. Expand
Epigenetic variation between urban and rural populations of Darwin’s finches
TLDR
This study explored variation between populations of Darwin’s finches, which comprise one of the best-studied examples of adaptive radiation, and found dramatic epigenetic differences between the urban and rural populations of both species. Expand
Experimental demonstration of a parasite-induced immune response in wild birds: Darwin's finches and introduced nest flies
TLDR
The relationship between host immune response, parasite load, and host fitness using Darwin's finches and an invasive nest parasite is investigated and it is found that while the immune response of mothers appeared defensive, it did not rescue current reproductive fitness. Expand
Galápagos mockingbirds tolerate introduced parasites that affect Darwin's finches.
TLDR
The results of this study suggest that finches are negatively affected by P. downsi because they do not have such behavioral mechanisms for energy compensation, and mockingbirds are capable of compensation, making them tolerant hosts, and a possible indirect threat to Darwin's finches. Expand
Human activity can influence the gut microbiota of Darwin's finches in the Galapagos Islands
TLDR
The results show that the gut microbiota of Darwin's finches is affected differently across sites with varying human presence, and gut bacterial community structure differed across sites and host species. Expand
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