Home About Browse Search
Svenska


Pheromone-based mating and aggregation in the Sorghum chafer, Pachnoda interrupta

Bengtsson, Jonas M. and Prabhakar Chinta, Satya and Wolde-Hawariat, Yitbarek and Negash, Merid and Seyoum, Emiru and Hansson, Bill S. and Schlyter, Fredrik and Schulz, Stefan and Hillbur, Ylva (2010). Pheromone-based mating and aggregation in the Sorghum chafer, Pachnoda interrupta. Journal of chemical ecology. 36:7, 768-777
[Journal article]

[img]
Preview
PDF
444kB

Official URL: http://dx.doi.org/10.1007/s10886-010-9814-2

Abstract

Adults of the sorghum chafer, Pachnoda interrupta Olivier (Coleoptera: Scarabaeidae: Cetoniinae), form aggregations during the mating period in July, but also in October. The beetles aggregate on food sources, e.g., Acacia spp. trees or sorghum with ripe seeds, to feed and mate. During the mating season, field trapping experiments with live beetles as bait demonstrated attraction of males to unmated females, but not to mated females or males, indicating the presence of a female-emitted sex pheromone. Unmated females combined with banana (food source) attracted significantly more males and females than did unmated females alone. Other combinations of beetles with banana were not more attractive than banana alone. Thus, aggregation behavior appears to be guided by a combination of pheromone and host volatiles. Females and males were extracted with hexane during the mating period, and the extracts were compared by using GC-MS. In a field trapping experiment, 19 compounds found only in females were tested, both singly and in a mixture. Traps baited with one of the female-associated compounds, phenylacetaldehyde, caught significantly more beetles than any other treatment. However, the sex ratio of beetles caught in these traps did not differ from that of control traps and it is possible that other components may be involved in the sex pheromone signal. Furthermore, traps baited with a mixture of all 19 compounds attracted significantly fewer beetles than did phenylacetaldehyde alone.

Authors/Creators:Bengtsson, Jonas M. and Prabhakar Chinta, Satya and Wolde-Hawariat, Yitbarek and Negash, Merid and Seyoum, Emiru and Hansson, Bill S. and Schlyter, Fredrik and Schulz, Stefan and Hillbur, Ylva
Title:Pheromone-based mating and aggregation in the Sorghum chafer, Pachnoda interrupta
Series/Journal:Journal of chemical ecology (0098-0331)
Year of publishing :July 2010
Volume:36
Number:7
Page range:768-777
Publisher:Springer Netherlands
ISSN:0098-0331
Language:English
Publication Type:Journal article
Refereed:Yes
Full Text Status:Public
Subjects:Obsolete subject words > NATURAL SCIENCES > Chemistry > Biochemistry
Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Plant and forest protection
Keywords:aggregation pheromone, Coleoptera , field trapping , Gas chromatography-Mass spectrometry (GC-MS) , olfaction , Pachnoda interrupta , Phenylacetaldehyde , Scarabaeidae , semiochemicals , sex pheromone , Sorghum , Sorghum bicolor
URN:NBN:urn:nbn:se:slu:epsilon-4-284
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-4-284
ID Code:4876
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: Jonas Bengtsson
Deposited On:07 Jul 2010 00:00
Metadata Last Modified:02 Dec 2014 10:34

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits