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Life History Traits and Demographic Parameters of Triatoma infestans (Hemiptera: Reduviidae) Fed on Human Blood.
Medone, Paula; Balsalobre, Agustin; Rabinovich, Jorge E; Marti, Gerardo A; Menu, Frédéric.
Afiliação
  • Medone P; Centro de Parasitológicos y de Vectores (CEPAVE-CCT-La Plata-CONICET-UNLP), Boulevard 120 S/N e/61 y 62 (B1902CHX), La Plata, Argentina. paulamedone@gmail.com.
  • Balsalobre A; Centro de Parasitológicos y de Vectores (CEPAVE-CCT-La Plata-CONICET-UNLP), Boulevard 120 S/N e/61 y 62 (B1902CHX), La Plata, Argentina.
  • Rabinovich JE; Centro de Parasitológicos y de Vectores (CEPAVE-CCT-La Plata-CONICET-UNLP), Boulevard 120 S/N e/61 y 62 (B1902CHX), La Plata, Argentina.
  • Marti GA; Centro de Parasitológicos y de Vectores (CEPAVE-CCT-La Plata-CONICET-UNLP), Boulevard 120 S/N e/61 y 62 (B1902CHX), La Plata, Argentina.
  • Menu F; Laboratory of Biometry and Evolutionary Biology, CNRS, UMR 5558, Lyon University, F-69000 Lyon, France. Claude Bernard University, Lyon 1 F-69622, Villeurbanne, France.
J Med Entomol ; 52(6): 1282-90, 2015 Nov.
Article em En | MEDLINE | ID: mdl-26373893
Triatoma infestans (Klug, 1834) (Hemiptera: Reduviidae), the main vector of Chagas disease in South America, feeds primarily on humans, but ethical reasons preclude carrying out demographical studies using people. Thus, most laboratory studies of T. infestans are conducted using bird or mammal live hosts that may result in different demographic parameters from those obtained on human blood. Therefore, it is of interest to determine whether the use of an artificial feeder with human blood would be operational to rear triatomines and estimate population growth rates. We estimated life history traits and demographic parameters using an artificial feeder with human blood and compared them with those obtained on live hens. Both groups of T. infestans were kept under constant conditions [28 ± 1°C, 40 ± 5% relative humidity, a photoperiod of 12:12 (L:D) h] and fed weekly. On the basis of age-specific survival and age-specific fecundity, we calculated the intrinsic rate of natural increase (r), the finite rate of population growth (λ), the net reproductive rate (Ro), and the mean generation time (Tg). Our results show differences in life history traits between blood sources, resulting in smaller population growth rates on human blood than on live hens. Although demographic growth rate was smaller on human blood than on hens, it still remains positive, so the benefit/cost ratio of this feeding method seems relatively attractive. We discuss possibility of using the artificial feeder with human blood for both ecological and behavioral studies.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Triatoma Aspecto: Ethics Limite: Animals / Female / Humans / Male Idioma: En Revista: J Med Entomol Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Triatoma Aspecto: Ethics Limite: Animals / Female / Humans / Male Idioma: En Revista: J Med Entomol Ano de publicação: 2015 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido