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ESTUDOS SOBRE A RESISTÊNCIA AO JEJUM E ASPECTOS NUTRICIONAIS DA CAVERNICOLA LENTI BARRETT & ARAIS,1985 (HEMIPTERA, REDUVIIDAE, TRIATOMINAE)
Resistência ao jejum
Aspectos nutricionais
Resistance to starvation
Different nutritional situations
Alternative title
Studies on the resistance to fasting and nutritional aspects of Cavernicola lenti Baeewtt & Arias, 1985 (Hemiptera, Reduviidae, Triatominae)Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Laboratório Nacional de Referência em Taxonomia de Triatomíneos. Rio de Janeiro, RJ, Brasil.
Abstract
In order to widen the present knowledge on the biology of this species, a study on the resistance to starvation was carried out among all nymphal stages and the adult stage (male and female). All evolutive stages were weighed on precision scale in three different nutritional situations: fed, non-fed and death registered after starvation. This procedure has allowed us to calculate the amount of blood taken in each stage and during the whole cycle, the average loss of weight during starvation and its relations with the initial weight. The insects were fed on mice and after eclosion or ecdisis they were isolated for observation of the starving period. Throuhout the whole experiment they were kept in a B. O. D./DOB incubator (28ºC and 90%R.U.). The resistance to starvation of the insects has grown from the first stage on (average of 15.5 days) to the fifth stage (average of 75.64 days); on the adult stage, the resistance period was equal to the third stage with an average of 41.76 for the males and 44.82 for the females. The amount of ingested blood was greater at the fifth stage worth 34.14 mg, corresponding to 2,04 times its initial weight. The average weight loss during the starvation was greater at the adult stage (23.95 mg), corresponding to 61.52% of the total weight.
Keywords in Portuguese
Cavernicola lenti Barrett & Arias, 1985Resistência ao jejum
Aspectos nutricionais
Keywords
Cavernicola lenti Barrett & Arias, 1985Resistance to starvation
Different nutritional situations
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