Study of dispersion and migration of lepodoptera, by using double light traps
1993
Herczig, B. | Meszaros, Z.
The dispersion and behavioural patterns of migrating Lepidoptera have been studied on 24 nights, by using portable, double light traps placed to different heights. The number of collected specimens was nearly one and a half time higher in the higher placed light traps as compared to the lower ones; the opposite was true for nights with strong winds. The individual number of migratory species was even higher, three times more in the higher traps than in the lower ones. It was established that the activity of non-migrating species depended more on the weather as their number in the light traps had shown much greater fluctuations. Finally, a "subjective" remark: as shown in Figs 1 and 2 the number of specimens collected in Hungary was lower by an order of magnitude as compared to similar collections in Asia, as an indirect proof of the exasperating alterations in our environment
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