Premium
Photovoltaic Effects in Hornets Are Correlated with the Time of Day ¶
Author(s) -
Sverdlov Anna,
Ishay Jacob S.
Publication year - 2004
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.2004.tb01268.x
Subject(s) - noon , morning , cuticle (hair) , zoology , time of day , range (aeronautics) , biology , botany , physics , atmospheric sciences , materials science , anatomy , composite material
This study deals with voltage values recorded off the cuticle of live specimens of the Oriental hornet Vespa orientalis (Hymenoptera, Vespidae). The relevant measurements were taken between the two tip of their bodies at various hours of the day and were made on a total of 90 worker hornets. Recorded voltage values varied within a range of 60‐180 mV, with the lower values measured during the morning hours and the afternoon and the highest values during the noon hours. Measurements were made by direct contact of the electrodes with the hornet cuticle and did not prove lethal to the measured specimens. An additional 60 live hornets were measured in the same fashion but in the dark. The values recorded in the dark varied between 40 and 70 mV and displayed considerable fluctuations but were not found to be dependent on the time of measurement. The distribution of the voltage values in hornets measured at various hours in the daytime closely resembled that of the global radiations (in W/m 2 ) on the same days the measurements were taken.