NDLI: Optimising coloured pan traps to survey flower visiting insects

Content Provider	Springer Nature Link
Author	Vrdoljak, Sven M. Samways, Michael J.
Copyright Year	2011
Abstract	Colour is an important attractant for many flower-visiting insects (anthophiles). Consequently, coloured pan trapping is an efficient technique that can be easily and cost-effectively used to quantitatively sample assemblages of anthophiles. However, colour preferences of anthophiles is an important source of bias that needs to be considered in pan trap surveys. By drawing sub samples comprised of different colour combinations from a database of pan trap surveys in the lowlands of the Cape Floristic Region, we examine the effects of colour on pan trap catches and determine which combinations of colours might provide better estimates of diversity when sampling with multi-colour sets of pan traps. Pan trap catches included the major groups of anthophiles in the region (Coleoptera, Diptera and Hymenoptera), but butterflies (Lepidoptera) were strongly under-represented. Colour played an important role in determining the species richness and composition of pan trap catches, with colour sets that included high reflectance yellow and white generally having catches with the highest species richness. While all colour combinations provided reasonable estimates of proportional species richness, proportional abundance of taxa varied among different colour sets, and did not accurately reflect actual proportions of different taxa in the entire dataset. For comparative biodiversity surveys and assessments we recommend the use of high reflectance colours such as white and yellow traps, while for full inventory surveys, it may be necessary to include other colours to catch rarer species that are excluded by the high reflectance colours alone.
Starting Page	345
Ending Page	354
Page Count	10
File Format	PDF
ISSN	1366638X
Journal	Journal of Insect Conservation
Volume Number	16
Issue Number	3
e-ISSN	15729753
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-07-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Insect pollinators Colour preference Invertebrate surveys Trap bias Insect diversity Biodiversity Entomology Conservation Biology/Ecology Life Sciences Animal Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Animal Science and Zoology Nature and Landscape Conservation Insect Science

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