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EFFECT OF MULTIPLE IMMERSIONS ON EGGS AND DEVELOPMENT OF IMMATURE FORMS OF HAEMAGOGUS JANTHINOMYS FROM SOUTH-EASTERN BRAZIL (DIPTERA: CULICIDAE)
Imersão
Desenvolvimento
Haemagogus janthinomys
Secas
Febre Amarela
Sudeste do Brasil
Author
Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Rio de Janeiro, RJ. Brasil.
Universidade Federal de Santa Catarina. Departamento de Microbiologia e Parasitologia . Florianópolis, SC, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Rio de Janeiro, RJ. Brasil.
Universidade Federal de Santa Catarina. Departamento de Microbiologia e Parasitologia . Florianópolis, SC, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Entomologia. Rio de Janeiro, RJ. Brasil.
Abstract
The effect of multiple immersions on Haemagogus janthinomys Dyar, 1921 eggs and
the development of its immature forms were studied. Eggs of Hg. janthinomys from Linhares (state
of Espírito Santo) were submitted to multiple immersions, counting the number of hatched eggs and
observing the periods for development until adult. The egg-hatching proportion attained 42-88%
(mean=68.2%), after 16 immersions, in three trials. After 8-9 immersions, the effect of additional
immersions was negligible. The periods for development of immature forms were 3.67±0.89,
1.2±0.66, 1.12±0.63, 4.86±1.77, 2.25±0.67 and 12.40±0.82 days, respectively for 1st-4th instar larvae,
pupae and the total. The postponement of the egg-hatching can be important for the production
of mosquitoes, from one egg batch, during several months. The total period of larval development is
very similar to previous indirect field calculations in the Brazilian state of Para and to mosquitoes
from Panama studied in the laboratory.
Keywords in Portuguese
DiapausaImersão
Desenvolvimento
Haemagogus janthinomys
Secas
Febre Amarela
Sudeste do Brasil
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