TY - JOUR
T1 - Biology of three species of North American Triatominae (Hemiptera: Reduviidae: Triatominae) fed on rabbits
AU - Martínez-Ibarra, José Alejandro
AU - Alejandre-Aguilar, Ricardo
AU - Paredes-González, Edgar
AU - Martínez-Silva, Miguel Alejandro
AU - Solorio-Cibrián, Miriam
AU - Nogueda-Torres, Benjamín
AU - Trujillo-Contreras, Francisco
AU - Novelo-López, Mónica
PY - 2007/12
Y1 - 2007/12
N2 - Aspects related to hatching, lifetime, number of blood meals for molting, mortality, feeding time, and postfeeding defecation delay were evaluated and compared in each instar of three North American Triatominae: Triatoma gerstaeckeri, Triatoma lecticularia and Triatoma protracta, all of them fed on rabbits. No significant differences (p > 0.05) were found among the three species regarding mean hatching rate, which was close to 20 days. Egg-to-adult development times were significantly shorter (p < 0.05) for T. lecticularia. Number of blood meals for molting to next instar ranged from one to five for T. protracta, and from one to six for T. gerstaeckeri and T. lecticularia. Mortality rates were higher in younger nymphs of T. lecticularia and T. protracta, while rates in T. gerstaeckeri were higher in fifth-instar nymphs. Mean feeding time was longest in T. gerstaeckeri, followed by T. lecticularia. More than twice the number of T. gerstaeckeri nymphs completed the development process, if compared to the nymphs from the other two species. Defecation delay was less than 10 min for T. lecticularia, T. protracta and the youngest nymphs of T. gerstaeckeri. Results point out that these three species may be important potential vectors of Trypanosoma cruzi for human populations, in areas of Mexico where these species are currently present.
AB - Aspects related to hatching, lifetime, number of blood meals for molting, mortality, feeding time, and postfeeding defecation delay were evaluated and compared in each instar of three North American Triatominae: Triatoma gerstaeckeri, Triatoma lecticularia and Triatoma protracta, all of them fed on rabbits. No significant differences (p > 0.05) were found among the three species regarding mean hatching rate, which was close to 20 days. Egg-to-adult development times were significantly shorter (p < 0.05) for T. lecticularia. Number of blood meals for molting to next instar ranged from one to five for T. protracta, and from one to six for T. gerstaeckeri and T. lecticularia. Mortality rates were higher in younger nymphs of T. lecticularia and T. protracta, while rates in T. gerstaeckeri were higher in fifth-instar nymphs. Mean feeding time was longest in T. gerstaeckeri, followed by T. lecticularia. More than twice the number of T. gerstaeckeri nymphs completed the development process, if compared to the nymphs from the other two species. Defecation delay was less than 10 min for T. lecticularia, T. protracta and the youngest nymphs of T. gerstaeckeri. Results point out that these three species may be important potential vectors of Trypanosoma cruzi for human populations, in areas of Mexico where these species are currently present.
KW - Biology
KW - Laboratory conditions
KW - North America
KW - Triatominae
UR - http://www.scopus.com/inward/record.url?scp=38149081984&partnerID=8YFLogxK
U2 - 10.1590/S0074-02762007000800006
DO - 10.1590/S0074-02762007000800006
M3 - Artículo
C2 - 18209930
AN - SCOPUS:38149081984
SN - 0074-0276
VL - 102
SP - 925
EP - 930
JO - Memorias do Instituto Oswaldo Cruz
JF - Memorias do Instituto Oswaldo Cruz
IS - 8
ER -