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Predicted taxonomic patterns in pheromone production by longhorned beetles
Ann M Ray1, Emerson S Lacey, Lawrence M Hanks
1Department of Entomology, University of Illinois at Urbana-Champaign, 320 Morrill Hall, 505 South Goodwin Ave., Urbana, IL 61801, USA. annray@life.uiuc.edu
Die Naturwissenschaften
|August 16, 2006
Summary
Male longhorned beetles (Cerambycinae) possess specific gland pores linked to volatile pheromone production. This study found these pores in most examined species, indicating a widespread reproductive strategy in this beetle subfamily.
Area of Science:
- Entomology
- Chemical Ecology
- Evolutionary Biology
Background:
- Males of some Cerambycinae beetles produce volatile pheromones with a specific structural motif.
- Male-specific prothoracic gland pores are hypothesized to indicate pheromone production.
Purpose of the Study:
- To investigate the taxonomic distribution of male-specific pheromone gland pores in the Cerambycinae subfamily.
- To assess the correlation between gland pores and volatile pheromone production.
Main Methods:
- Scanning electron microscopy was used to examine 65 species across 24 tribes of Cerambycinae.
- Males and females of each species were analyzed for the presence of prothoracic gland pores.
Main Results:
- Male-specific gland pores were identified in 49 out of 65 species examined.
- Pores were absent in females and in 16 species across both sexes.
- The presence of pores in four known pheromone-producing species supports their association with volatile compound synthesis.
Conclusions:
- Male-specific pheromone gland pores are common in Cerambycinae, suggesting widespread use of volatile pheromones in reproduction.
- The evolutionary lability of this trait indicates its adaptive significance.
- Gland pores serve as a reliable morphological indicator for pheromone production in male Cerambycinae.
