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Identification of Blood Meals from Potential Arbovirus Mosquito Vectors in the Peruvian Amazon Basin

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  • 1 Department of Biological Sciences, Border Biomedical Research Center, University of Texas at El Paso, El Paso, Texas.
  • | 2 Institute for Human Infections and Immunity, Galveston, Texas.
  • | 3 Department of Pathology, University of Texas Medical Branch, Galveston, Texas.
  • | 4 Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.
  • | 5 U.S. Naval Medical Research Unit No. 6, Lima, Peru.
  • | 6 Universidad Peruana Cayetano Heredia, Lima, Peru.
  • | 7 Centers for Disease Control and Prevention, Atlanta, Georgia.
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The transmission dynamics of many arboviruses in the Amazon Basin region have not been fully elucidated, including the vectors and natural reservoir hosts. Identification of blood meal sources in field-caught mosquitoes could yield information for identifying potential arbovirus vertebrate hosts. We identified blood meal sources in 131 mosquitoes collected from areas endemic for arboviruses in the Peruvian Department of Loreto by sequencing polymerase chain reaction amplicons of the cytochrome b gene. Psorophora (Janthinosoma) albigenu, Psorophora (Grabhamia) cingulata, Mansonia humeralis, Anopheles oswaldoi s.l., and Anopheles benarrochi s.l. had mainly anthropophilic feeding preferences; Aedes (Ochlerotatus) serratus, and Aedes (Ochlerotatus) fulvus had feeding preferences for peridomestic animals; and Culex (Melanoconion) spp. fed on a variety of vertebrates, mainly rodents (spiny rats), birds, and amphibians. On the basis of these feeding preferences, many mosquitoes could be considered as potential enzootic and bridge arbovirus vectors in the Amazon Basin of Peru.

Author Notes

* Address correspondence to Pedro M. Palermo, Department of Biological Science and Border Biomedical Research Center, University of Texas at El Paso, 500 West University Avenue, El Paso, TX 79968. E-mail: ppalermo@utep.edu

Financial support: This work was funded by the U.S. Southern Command (SOUTHCOM) and Armed Forces Health Surveillance Center–Global Emerging Infections Surveillance (GEIS) protocol NMRCD.2009.0002, Work Unit 847705 82000 25GB B0016. Andrés G. Lescano is sponsored by the training grant 2D43 TW007393 awarded by the Fogarty International Center of the U.S. National Institutes of Health.

Authors' addresses: Pedro M. Palermo, Department of Biological Sciences, Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX, E-mail: ppalermo@utep.edu. Patricia V. Aguilar, Department of Pathology, University of Texas Medical Branch, Galveston, TX, E-mail: pvaguila@utmb.edu. Juan F. Sanchez, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, E-mail: juan.f.sanchez@jhu.edu. Víctor Zorrilla, Carmen Flores-Mendoza, Anibal Huayanay, and Carolina Guevara, U.S. Naval Medical Research Unit No. 6, Washington, DC, E-mails: victor.zorrilla@med.navy.mil, carmen.flores@med.navy.mil, anibalhuayanay@gmail.com, and carolina.guevara.fn@mail.mil. Andrés G. Lescano, Universidad Peruana Cayetano Heredia, Lima, Peru, E-mail: andres.lescano.g@upch.pe. Eric S. Halsey, Centers for Disease Control and Prevention, Atlanta, GA, E-mail: ycw8@cdc.gov.

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