Present address: Australian National Insect Collection, CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, ACT 2601, Australia.
Using meteorological and lunar information to explain catch variability of Orthoptera and Lepidoptera from 250 W Farrow light traps
Article first published online: 19 SEP 2011
© 2011 The Authors. Insect Conservation and Diversity © 2011 The Royal Entomological Society
Insect Conservation and Diversity
Volume 5, Issue 5, pages 367–380, September 2012
How to Cite
STEINBAUER, M. J., HASLEM, A. and EDWARDS, E. D. (2012), Using meteorological and lunar information to explain catch variability of Orthoptera and Lepidoptera from 250 W Farrow light traps. Insect Conservation and Diversity, 5: 367–380. doi: 10.1111/j.1752-4598.2011.00170.x
- Issue published online: 14 SEP 2012
- Article first published online: 19 SEP 2011
- Accepted 21 July 2011 Editor/associate editor: Calvin Dytham
- flight activity;
- insect monitoring;
- mallee eucalypt habitat;
- moon phase;
- population dynamics;
- River redgum riparian habitat;
- wind speed and direction
Abstract. 1. Farrow light traps have been used in Australia since the 1970s to monitor locusts only, but catch variability has not been explained. Four light traps were operated at North Bourke, northern New South Wales, to study catch variability.
2. Habitat did not influence catch composition (non-metric multidimensional scaling/analyses of similarity) or similarity. Assemblages of Orthoptera differed only modestly between December and March, whereas assemblages of macrolepidoptera differed strongly between December, March and April.
3. Twenty-two species of Orthoptera were caught and seven analysed. Kruskal–Wallis ranking tests showed that the largest catches of a species of cricket were obtained when the dominant wind direction was from the SE, whereas the largest catches of three acridid species were obtained when the wind was from the NW. Catch variability of two acridids could be explained by temperature (Generalised linear models); the smallest acridid by wind speed and of the cricket and two acridids by moon surface illumination (K).
4. Eighty-two species of macrolepidoptera were identified and 17 analysed. The largest catches of a noctuid were obtained when the wind was from the SW; an oenosandrid was only caught when the wind was from the SE or NE. Catch variability of two noctuids, an arctiid and an oenosandrid could be explained by temperature; three noctuids, an arctiid, a cossid and a psychid by relative humidity; a noctuid by wind speed; and two noctuids and two oenosandrids by K.
5. To facilitate comparisons of catches and interpret long-term population trends, catch variability should be standardised for meteorological/lunar conditions.