biologia do triatoma vitticeps (stal, 1859) em condições de laboratório (hemiptera: reduviidae: triatominae): ii. resistência ao jejum biology of triatoma vitticeps (stal, 1859) under laboratory conditions (hemiptera: reduviidae: triatominae): ii. resistance to starvation
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ID: 233162
1989
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Abstract
Em prosseguimento ao estudo da biologia do Triatoma vitticeps (Gonçalves et al., 1988), foram feitas observações sobre a sua resistência ao jejum. Dos 286 ovos obtidos, apenas 201 eclodiram e atingiram o estádio pretendido para as observações. Os demais não eclodiram, não completaram a muda ou morreram sem motivo aparente. As ninfas foram acondicionadas, individualmente em frascos de Borrel, devidamente registrados. Para a alimentação foram utilizados camundongos e a medida que as ninfas atingiam o estágio pretendido a alimentação era suspensa até ocorrer a morte. A avaliação da resistência ao jejum foi feita da seguinte forma: o intervalo de dias entre o último repasto e a morte e entre a muda e a morte. Verificou-se que a resistência está diretamente relacionada com a fase de desenvolvimento. Para os parâmetros último repasto/morte e muda/morte, ambos os sexos foram menos resistentes do que as ninfas de 3º e 2º estádios, respectivamente. O experimento teve duração de 15 meses e neste período as temperaturas máxima e mínima e a umidade relativa do ar variaram em média de 25 ± 2ºC e 81 ± 3% UR, respectivamente. O material foi proveniente da criação de triatomíneos mantida no Departamento de Entomologia do Instituto Oswaldo Cruz.
Following the study on the biology of Triatoma vitticeps (Gonçalves et al. 1988) observations have been made on its resistance to starvation. Of the 286 eggs obtained only 201 hatched and reached the intended stage for observation. The others did not eclode, neither reached the ecdisis nor died, without explanation. The nymphs were kept, separately, in Borrel flasks and properly listed. The blood-meal was performed in mice, although the insects were kept without feeding as soon as moulted. The starvation was evaluated in two ways: the time-lapse in days between the last meal/death and between mult/death. The starvation was directly related with the developmental stage. In relation to the parameters las meal/death and moult/death, both sexes were less resistant than 3rd and 2nd stage, respectively. The experiment have been carried out for 15 months and by this time the average minimum and maximum temperatures and the humidity were 25 ± 2ºC and 81 ± 3% UR, respectively. The material spent belongs to the triatomine colony of the Oswaldo Cruz Institut Department of Entomology.
Following the study on the biology of Triatoma vitticeps (Gonçalves et al. 1988) observations have been made on its resistance to starvation. Of the 286 eggs obtained only 201 hatched and reached the intended stage for observation. The others did not eclode, neither reached the ecdisis nor died, without explanation. The nymphs were kept, separately, in Borrel flasks and properly listed. The blood-meal was performed in mice, although the insects were kept without feeding as soon as moulted. The starvation was evaluated in two ways: the time-lapse in days between the last meal/death and between mult/death. The starvation was directly related with the developmental stage. In relation to the parameters las meal/death and moult/death, both sexes were less resistant than 3rd and 2nd stage, respectively. The experiment have been carried out for 15 months and by this time the average minimum and maximum temperatures and the humidity were 25 ± 2ºC and 81 ± 3% UR, respectively. The material spent belongs to the triatomine colony of the Oswaldo Cruz Institut Department of Entomology.
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| Authors | ;Teresa Cristina M. Gonçalves;Vânia Maria N. Victório;José Jurberg;Vanda Cunha |
| Journal | kurdistan journal of applied research |
| Year | 1989 |
| DOI |
10.1590/S0074-02761989000100023
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