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ALARM PHEROMONES AND THE INFLUENCE OF PUPAL ODOR ON THE AGGRESSIVENESS OF Polybia paulista (IHERING) (HYMENOPTERA: VESPIDAE)
Provedor de dados: 79
Autores: MANZOLI-PALMA,M.F.; GOBBI,N.; PALMA,M.S.
Field bioassays were used to demonstrate that aggressive behavior of Polybia paulista (Ihering) workers is elicited by alarm pheromones present in the venom reservoirs of nest defenders and that the brood care pheromone (pupal odor) produced by the young inside the nest also plays an important defensive role. Pupal odor was extracted from the surface of pupa bodies with methanol. When bioassayed alone, the pupal odor elicited only attractiveness of workers towards the odor source, but no stinging attacks were observed. However, in the presence of alarm pheromones, the brood care pheromone potentiated the effect caused by the pupal odors, increasing the number of stinging attacks during an action of colony defense. Thus, the presence of pupae within the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Wasps; Brood; Defense behavior; Venom reservoirs.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301998000100006

BIOINSECTICIDE ACTION OF THE VENOM OF AFRICANIZED BEES Apis mellifera LINNAEUS 1758 (HYMENOPTERA: APIDAE): I -THE MOST SUSCEPTIBLE AGE OF Diatraea saccharalis FABRICIUS 1794 (LEPELETIER: PYRALIDAE) EGGS TO THE VENOM ACTION
Provedor de dados: 79
Autores: BONFANTI-ALMEIDA,J.C.; GOBBI,N.; PALMA,M.S.
The present paper aimed at testing the action of non-lyophilized venom of Africanized bees Apis mellifera through topical applications on Diatraea saccharalis egg masses. The CL50, DL50 and the most susceptible age of eggs to the venom topic application were also determined. Three-day-old eggs were the most susceptible to the venom action with CL50 equal to 8.6 mg/ml and DL50 equal to 0.173 mg/mass. The venom loses its action after being stored for 15 days.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Venom; Africanized bee; Apis mellifera; Eggs; Sugar-cane borer; Diatraea saccharalis.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100006

THE EFFECT OF A POLYDNAVIRUS OF APANTELES GALLERIAE  ON THE HEMOLYMPH PROTEINS OF HOST GALLERIA MELLONELA
Provedor de dados: 79
Autores: BROCHETTO-BRAGA,M.R.; PALMA,M.S.; RIBEIRO,J.C.; GOBBI,N.
The presence of a polydnavirus in the ovary of the microhymenoptera Apanteles galleriae was detected. This wasp parasites the larvae of the wax moth Galleria mellonella. To study the possible viral effects on the total protein of G.mellonella, hemolymph extracts of the ovary calyxes of parasitized A. galleriae were injected into 6th and 7th instar cells of G.mellonella larvae. Protein profiles on polyacrilamide gel electrophoresis containing sodium dodecyl sulfate (SDS-PAGE) of host cell extracts showed a suppression of several protein bands when infection occurred in the 6th instar. However, in the 7th instar, parasitism caused an amplification in the synthesis of most proteins with some changes in the electrophoretic profile.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microhymenoptera; Wax moth; Parasitism; Polydnavirus; SDS-PAGE; Apanteles galleriae; Galleria mellonela.
Ano: 1995
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301995000200005

HIGH-PERFORMANCE GEL FILTRATION PATTERNS OF VENOMS  FROM THREE SPECIES OF WASPS OF THE GENUS Polybia  (HYMENOPTERA, VESPIDAE)
Provedor de dados: 79
Autores: PALMA,M. S.; MANZOLI-PALMA,M. F.; GOBBI,N.
The profiles of high-performance gel filtration of venoms from Polybia paulista, Polybia ignobilis and Polybia occidentalis occidentalis showed 13 peaks distributed among the three species. These profiles presented similarities that permitted the chromatographic characterization of the genus Polybia and differences that permitted the identification of each species studied. Thus, the comparative analysis of chromatographic profiles of high-performance gel filtration of venoms may be used as an auxiliary tool in taxonomic studies of Polybia wasps.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vespidae; Chromatographic; Sac of venom; Polybia.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000200007