Publications

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ornithodoros (alectorobius) amblus (acarina: ixodoidea: argasidae): identity, marine bird and human hosts, virus infections, and distribution in peru.ornithodoros (alectorobius) amblus chamberlin 1920, adults previously were described inadequately. practically nothing was known regarding the identity, hosts, distribution, and biology of this species. we redescribe both sexes, describe the nymph and larva, and present criteria for differentiating these stages from those of other members of the o. (a.) capensis group in the western hemisphere. samples were collected from 13 localities on the pacific coast and on offshore islands of peru. hosts ...19807391872
permanent genetic resources added to molecular ecology resources database 1 october 2009-30 november 2009.this article documents the addition of 411 microsatellite marker loci and 15 pairs of single nucleotide polymorphism (snp) sequencing primers to the molecular ecology resources database. loci were developed for the following species: acanthopagrus schlegeli, anopheles lesteri, aspergillus clavatus, aspergillus flavus, aspergillus fumigatus, aspergillus oryzae, aspergillus terreus, branchiostoma japonicum, branchiostoma belcheri, colias behrii, coryphopterus personatus, cynogolssus semilaevis, cy ...201021565039
response of colonial peruvian guano birds to flying uavs: effects and feasibility for implementing new population monitoring methods.drones are reliable tools for estimating colonial seabird numbers. although most research has focused on methods of improving the accuracy of bird counts, few studies have evaluated the impacts of these methods on bird behavior. in this study, we examined the effects of the dji phantom 3 drone approach (altitude, horizontal and vertical descent speeds) on changes in the intensity of behavioral response of guano birds: guanay cormorants (phalacrocorax bougainvilli), peruvian boobies (sula variega ...201931844569
predictive modelling of habitat selection by marine predators with respect to the abundance and depth distribution of pelagic prey.understanding the ecological processes that underpin species distribution patterns is a fundamental goal in spatial ecology. however, developing predictive models of habitat use is challenging for species that forage in marine environments, as both predators and prey are often highly mobile and difficult to monitor. consequently, few studies have developed resource selection functions for marine predators based directly on the abundance and distribution of their prey. we analysed contemporaneous ...201526061120
use of social information in seabirds: compass rafts indicate the heading of food patches.ward and zahavi suggested in 1973 that colonies could serve as information centres, through a transfer of information on the location of food resources between unrelated individuals (information centre hypothesis). using gps tracking and observations on group movements, we studied the search strategy and information transfer in two of the most colonial seabirds, guanay cormorants (phalacrocorax bougainvillii) and peruvian boobies (sula variegata). both species breed together and feed on the same ...201020360959
seasonality in marine ecosystems: peruvian seabirds, anchovy, and oceanographic conditions.in fluctuating environments, matching breeding timing to periods of high resource availability is crucial for the fitness of many vertebrate species, and may have major consequences on population health. yet, our understanding of the proximate environmental cues driving seasonal breeding is limited. this is particularly the case in marine ecosystems, where key environmental factors and prey abundance and availability are seldom quantified. the northern humboldt current system (nhcs) is a highly ...201628616892
seasonality in marine ecosystems: peruvian seabirds, anchovy, and oceanographic conditions.in fluctuating environments, matching breeding timing to periods of high resource availability is crucial for the fitness of many vertebrate species, and may have major consequences on population health. yet, our understanding of the proximate environmental cues driving seasonal breeding is limited. this is particularly the case in marine ecosystems, where key environmental factors and prey abundance and availability are seldom quantified. the northern humboldt current system (nhcs) is a highly ...201627008787
patterns of gps tracks suggest nocturnal foraging by incubating peruvian pelicans (pelecanus thagus).most seabirds are diurnal foragers, but some species may also feed at night. in peruvian pelicans (pelecanus thagus), the evidence for nocturnal foraging is sparse and anecdotal. we used gps-dataloggers on five incubating peruvian pelicans from isla lobos de tierra, perú, to examine their nocturnality, foraging movements and activities patterns at sea. all instrumented pelicans undertook nocturnal trips during a 5-7 day tracking period. eighty-seven percent of these trips (nā€Š=ā€Š13) were strictly ...201121647444
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