Stingless bee antennae: A magnetic sensory organ?


By jpeza - Posted on 06 Octubre 2009

Fecha Publicación: 
1 Ene 2006
Nombre de Revista: 
Datos del paper
Autor Principal: 
M. J. Lucano
Volumen: 
19
Issue: 
3
Página Inicial: 
295
Página Final: 
300
Abstract: 

Magnetic material in the body parts of the stingless bee Schwarziana quadripunctata, heads, pairs of
antennae, thorax and abdomens, were investigated by SQUID magnetometry and Ferromagnetic Resonance
(FMR). The saturation, Js and remanent, Jr, magnetizations and coercive field Hc are determined
from the hysteresis curves. From Hc and Jr/Js the magnetic particle sizes are estimated. The Js and the FMR
spectral absorption areas yield 23±3%, 45±5%, 15±2% and 19±4% magnetic material contributions of
head, pair of antennae, thorax and abdomen, respectively, similar to those observed in the migratory ant
Pachycondyla marginata. This result is discussed in light of the hypothesis of antennae as a magnetosensor
structure.

Dirección del Autor: 

Centro Brasileiro de Pesquisas Fı´sicas, R Xavier Sigaud 150, Rio de Janeiro, RJ 22290-180, Brazil; *Author
for correspondence (E-mail: darci@cbpf.br

Keywords: 
stingless bee
pair of antennae
SQUID
FMR
Coautores: 

G. Cernicchiaro, E. Wajnberg & D. M. S. Esquivel

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