Royal Society Aldabra Research Station, Aldabra Atoll, Indian Ocean.
A preliminary study of insect abundance on West Island, Aldabra Atoll, Indian Ocean
Article first published online: 24 APR 2009
1975 The Royal Entomological Society
Transactions of the Royal Entomological Society of London
Volume 127, Issue 3, pages 209–225, December 1975
How to Cite
FRITH, D. W. (1975), A preliminary study of insect abundance on West Island, Aldabra Atoll, Indian Ocean. Transactions of the Royal Entomological Society of London, 127: 209–225. doi: 10.1111/j.1365-2311.1975.tb00571.x
- Issue published online: 24 APR 2009
- Article first published online: 24 APR 2009
- 5th May, 1975
- 1Heath and Rothamsted light traps and a Johnson-Taylor suction trap were used to sample flying insects on Aldabra Atoll.
- 2The present study extended over two wet seasons. The pattern of relative monthly insect activity resembled the rainfall pattern. Catches were greatest during the months when there was a sudden marked increase in precipitation.
- 3Lepidoptera dominated light trap catches and Diptera suction trap catches, the total monthly insect numbers therefore reflecting the abundance of these two orders. Hemiptera, Coleoptera and Hymenoptera were also common.
- 4Predominant families were represented by only a few or even only one dominant species. These species were present throughout the study period although their monthly totals varied considerably, different species dominating the catches during different months.
- 5The composition and size of catches in the three light traps was affected by the type of light source and surrounding vegetation.
- 6A comprehensive list of families and selected common species is given with their relative monthly abundance in the light traps.
- 7Suction trap catches were segregated on an hourly basis to give a broad indication of insect flight periodicity.