Life cycle of Triatoma ryckmani (Hemiptera: Reduviidae) in the laboratory, feeding patterns in nature and experimental infection with Trypanosoma cruzi
Mem. Inst. Oswaldo Cruz
;
105(1): 99-102, Feb. 2010. tab
Artigo
em Inglês
| LILACS
| ID: lil-539302
ABSTRACT
A cohort initiated with 121 eggs, yielding 105 first instar nymphs (eclosion rate 86.78 percent), allowed us to observe the entire life cycle of Triatoma ryckmani under laboratory conditions (24ºC and 62 percent relative humidity), by feeding them on anesthetized hamsters. It was possible to obtain 62 adults and the cycle from egg to adult took a mean of 359.69 days with a range of 176-529 days (mortality rate of nymphs 40.95 percent). Mean life span of adults was of 81 days for females and 148 days for males. The developmental periods of 4th and 5th nymphs were longer than those of the other instars. This suggests that young siblings have a better chance of taking a hemolymph meal from older ones, in order to survive during fasting periods during prolonged absences of vertebrate hosts from natural ecotopes. The stomach contents of 37 insects showed blood from rodents (15 cases), lizards (7 cases), birds (6 cases) and insect hemolymph (7 cases). Out of 10 insects fed by xenodiagnosis on a Trypanosoma cruzi infected mouse, all but one became infected with the parasite.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Triatoma
/
Trypanosoma cruzi
/
Comportamento Alimentar
/
Estágios do Ciclo de Vida
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
Idioma:
Inglês
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
Medicina Tropical
/
Parasitologia
Ano de publicação:
2010
Tipo de documento:
Artigo
País de afiliação:
Brasil
/
Costa Rica
/
Guatemala
Instituição/País de afiliação:
Instituto Oswaldo Cruz-Fiocruz/BR
/
Universidad Nacional/CR
/
Universidad de San Carlos de Guatemala/GT
Similares
MEDLINE
...
LILACS
LIS