he recent widespread adoption of drones for studying marine animals provides opportunities for deriving biological information from aerial imagery. The large scale of imagery data acquired from drones is well suited for ...

Introduction: Costa Rica has been recognized worldwide for its high biodiversity and the conservation actions it has implemented. One of the most iconic ecosystems are coral reefs, which have experienced strong anthropo- genic ...

The barnacle Chelonibia testudinaria is arguably the most common and conspicuous epibiont on sea turtles. As evidence suggests that C. testudinaria settles on turtles in coastal areas, this barnacle could serve as an ...

Biological and environmental conditions are drivers of fish habitat use, making it essential to understand how fish move and use specific areas to inform effective fisheries manage- ment and conservation. This study ...

Differential resource use of sympatric species that co-exist is poorly known. Considering sympatric procyonid species inhabiting the dry forest of northwest Costa Rica (Santa Rosa National Park) we hypothesized northern ...

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Biologists have long been interested in the causes, costs, and benefits of group living. Within species, group sizes vary and affect the behavior of group members. Yet, few studies have investigated how behavioral ...

Several specialised insects can manipulate normal plant development to induce a highly organised structure known as a gall, which represents one of the most complex interactions between insects and plants. Thus far, the ...

A key component of amphibian antipredator strategies is the chemical defenses that make them toxic and/or distasteful, like the cardiotoxic bufadienolides synthesized by the true toads and stored in granular skin glands. ...

Introduction: The bull shark, Carcharhinus leucas, is particularly vulnerable to anthropogenic actions because of its permanence in coastal ecosystems; populations depletion is registered in different places around the ...