caa a22 4500 465762379 CHVBK 20180323111902.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF02350275 doi (NATIONALLICENCE)springer-10.1007/BF02350275 Digging activity by the oriental hornet ( Vespa orientalis [Elektronische Daten] ; Hymenoptera, Vespinae) is correlated with solar radiation [Jacob Ishay, Samuel Elly Lior] Observations were made on the activities of workers of the Oriental hornetVespa orientalis, during flight to and from the nest, on fully active days in months of maximal colony activities. Two types of flight out of the nest were recorded: flight for removal of dug-up soil and flight for foraging of buiding materials and food from the field. The flights of digger workers occur and peak around 1200, (with even slopes down to zero on both sides of the peak). The flight activity curve is gaussian and in accordance with the intensity of solar irradiation. Flight activities of foraging workers are limited in the morning hours but subsequently increase, the curve resembling that of the air temperature at 2m above the soil surface. The flight rhythm of digger hornets in the presence of 2 adjacent outles and the rhythm of activity of digger hornets of 2 abutting nests were also investigated. The results indicate a strong competition among the diggers for flight opportunity during periods of highest insolation intensity. Due to the correlation between the flight of digger hornets and the intensity of sun radiation, it is assumed that hornets do make use of solar energy for flight purposes. Japan Ethological Society, 1990 Ishay Jacob Department of Physiology and Pharmacology, Sackler School of Medicine Tel Aviv University, 69978, Ramat Aviv, ISRAEL aut Elly Lior Samuel Department of Physiology and Pharmacology, Sackler School of Medicine Tel Aviv University, 69978, Ramat Aviv, ISRAEL aut Journal of Ethology Springer-Verlag 8/2(1990-12-01), 61-68 0289-0771 8:2<61 1990 8 10164 https://doi.org/10.1007/BF02350275 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02350275 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ishay Jacob Department of Physiology and Pharmacology, Sackler School of Medicine Tel Aviv University, 69978, Ramat Aviv, ISRAEL aut NATIONALLICENCE 700 1- Elly Lior Samuel Department of Physiology and Pharmacology, Sackler School of Medicine Tel Aviv University, 69978, Ramat Aviv, ISRAEL aut NATIONALLICENCE 773 0- Journal of Ethology Springer-Verlag 8/2(1990-12-01), 61-68 0289-0771 8:2<61 1990 8 10164 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer