Projects completed by 2010 and later

Nocturnal birds in the second growth: Mônica Sberze sampled owls, potoos and nightjars in a set of 54 continuous forest and second growth sites. With her data, she tested expectations about which species occur most frequently in the secondary forest - a type of landscape cover that is growing and often neglected in ecological studies of tropical rainforest. As in the commonness/rarity study, we used detection-non-detection data to estimate occupancy while taking detection failures into account. This study relied completely on the detection of vocalizations, motivating work on autonomous recording. A final report can be found in Mônica’s M.A. thesis and in Animal Conservation 13 (1): 3-11. Support: IEB-Beca, FAPEAM, STRI.

Kissing-bugs on palm trees: The control of chagas-disease carrying triatomine bugs (aka kissing bugs) is a serious health concern in Latin America. This study applied a site-occupancy approach to model infestation of palm trees by triatomine bugs over three spatial scales and arrived at the conclusion that cleaning palm trees near homes makes a very substantial difference in infestation. The work was based on a data set collected by F. Abad-Franch, from Brazil’s Fiocruz, and colleagues. It was published in2010 in the journal PLoS Neglected Tropical Diseases 4 (3): e620. Support: Fiocruz, STRI.

Commonness and rarity of birds in the continuous forest: Encouraged by the results from old mist-net records and recognizing the potential for improved sampling design, we set out to address simple questions that could be easily treated with point count data. This particular project tests currently held notions of rarity and commonness in a set oftwenty continuous species. Do these notions reflect differences in occupancy or are they mostly a result of differences in detectability? This work resulted from Marconi Cerqueira’s MSc project and was published in 2013 as Cerqueira et al. Diversity and Distributions 19: 710-721. Support: FAPEAM, STRI.

Sex-biased incidence of Cutaneous Leishmaniasis in two human populations of the central Amazon basin: Epidemiological records show that more men than women contract Cutaneous Leishmaniasis, a difference usually attributed to higher male exposure to disease vectors. In this study, we compared Leishmaniasis incidence in a rural population where men spend relatively more time in the woods and in a population of field researchers where men and women are equally exposed to vectors. The sex-bias persists among researchers suggesting there is more than just exposure at stake. Study led by Letícia Soares, collaboration with F. Abad-Franch.   Support: CAPES, Fiocruz, FAPEAM, STRI.