The fraction between 950 and 4000Da of the venom of Apis mellifera has been analyzed with MALDI-TOF mass spectrometry and statistical facilities of the ClinProTools software. Consistent differences in the composition of this venom fraction were observed between queens and workers while younger and older workers (nurses and guards as well as foragers) differ for the relative percentages of two well known cytolytic peptides, namely Melittin and Apamin. Total in situ body methanol extracts and methanol micro-extractions on the cuticle of various parts of the body of drones and females confirmed that venom peptides are smeared on the body surface of females in a not yet clarified way. The observation that venom peptides have been found also on comb wax rises the hypothesis that the use of venom as antimicrobial agent makes part of the social immunity system of A. mellifera.

Differences in venom and cuticular peptides in individuals of Apis mellifera (Hymenoptera: Apidae) determined by MALDI-TOF MS / Baracchi, David*; Turillazzi, Stefano. - In: JOURNAL OF INSECT PHYSIOLOGY. - ISSN 0022-1910. - ELETTRONICO. - 56:(2010), pp. 366-375. [10.1016/j.jinsphys.2009.11.013]

Differences in venom and cuticular peptides in individuals of Apis mellifera (Hymenoptera: Apidae) determined by MALDI-TOF MS

Baracchi, David
;
Turillazzi, Stefano
Supervision
2010

Abstract

The fraction between 950 and 4000Da of the venom of Apis mellifera has been analyzed with MALDI-TOF mass spectrometry and statistical facilities of the ClinProTools software. Consistent differences in the composition of this venom fraction were observed between queens and workers while younger and older workers (nurses and guards as well as foragers) differ for the relative percentages of two well known cytolytic peptides, namely Melittin and Apamin. Total in situ body methanol extracts and methanol micro-extractions on the cuticle of various parts of the body of drones and females confirmed that venom peptides are smeared on the body surface of females in a not yet clarified way. The observation that venom peptides have been found also on comb wax rises the hypothesis that the use of venom as antimicrobial agent makes part of the social immunity system of A. mellifera.
2010
56
366
375
Baracchi, David*; Turillazzi, Stefano
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1148054
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