Infrared spectral sensitivity of Melanophila acuminata.
The spectral sensitivity of the pit organ of the beetle Melanophila acuminata (Coleoptera:Buprestidae) was measured using an ultrafast tunable infrared laser source and standard electrophysiological techniques. The pit organ may be classified as a broadband detector as the beetles responded to all infrared excitation wavelengths from 2 to 6&mgr;m. There was a decrease in response threshold and latency and an increase in the magnitude of the response in the region from 2.8 to 3.5&mgr;m, which corresponded to a region of decreased transmittance (increased absorbance) as measured by Fourier transform infrared spectroscopy. The implications of the correlation between spectral response and optical properties are discussed.
Hammer
D X.
DX
Department of Electrical Engineering, University of Texas, 78712, Austin, TX, USA
Seigert
J
J
Stone
M O.
MO
Rylander
H G.
HG
Welch
A J.
AJ