Antennal malformations in light ocelli drones of Apis mellifera (Hymenoptera, Apidae)
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Data
2000-02-01
Autores
CHAUD-NETTO, J. [UNESP]
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Editor
Instituto Internacional de Ecologia
Resumo
Antenas com malformações diversas, extraídas de zangões de Apis mellifera de ocelos claros, foram desenhadas e dissecadas para a contagem de discos olfativos dos segmentos morfologicamente alterados, em comparação com as antenas normais de seus irmãos. Alguns zangões apresentaram anormalidades morfológicas em um dos segmentos da antena direita ou esquerda, mas outros possuíam dois ou mais segmentos alterados na mesma antena. Zangões com malformações em ambas as antenas também foram observados. Os segmentos 4 e 5 do flagelo foram os mais freqüentemente afetados. em um menor número de casos, a freqüência de discos olfativos nos segmentos malformados não diferiu significativamente em relação à observada nos segmentos normais. Contudo, na maioria dos casos estudados, as malformações antenais ocasionaram uma significativa redução no número de discos olfativos dos segmentos malformados.
Malformed antennae of Apis mellifera light ocelli drones were drawn, dissected and mounted permanently on slides containing Canada balsam, in order to count the olfactory discs present in each segment, in comparison with the number of those structures in normal antennae of their brothers. Some drones presented morphological abnormalities in a single segment of the right or left antenna, but others had two or more malformed segments in a same antenna. Drones with malformations in both antennae were also observed. The 4th and 5th flagellum segments were the most frequently affected. In a low number of cases the frequency of olfactory discs in malformed segments did not differ from that one recorded for normal segments. However, in most cases studied, the antennal malformations brought about a significant reduction in the number of olfactory discs from malformed segments.
Malformed antennae of Apis mellifera light ocelli drones were drawn, dissected and mounted permanently on slides containing Canada balsam, in order to count the olfactory discs present in each segment, in comparison with the number of those structures in normal antennae of their brothers. Some drones presented morphological abnormalities in a single segment of the right or left antenna, but others had two or more malformed segments in a same antenna. Drones with malformations in both antennae were also observed. The 4th and 5th flagellum segments were the most frequently affected. In a low number of cases the frequency of olfactory discs in malformed segments did not differ from that one recorded for normal segments. However, in most cases studied, the antennal malformations brought about a significant reduction in the number of olfactory discs from malformed segments.
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Palavras-chave
Apidae, Apis mellifera, zangões, malformações antenais, discos olfativos, Apidae, Apis mellifera, drones, antennal malformations, olfactory discs
Como citar
Revista Brasileira de Biologia. Instituto Internacional de Ecologia, v. 60, n. 1, p. 123-127, 2000.