Journal
JOURNAL OF ECONOMIC ENTOMOLOGY
Volume 110, Issue 3, Pages 1284-1290Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/jee/tox095
Keywords
RNAi; necrophoric behavior; fatty acid; social insect
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Funding
- Natural Sciences Foundation of China [31601693]
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Necrophoric behavior is essential to colony health in social insects. Little is known about the genes that are responsible for necrophoric behavior. Here, we show that a chemosensory protein gene Si-CSP1 was expressed significantly higher in the antennae than in other tissues such as the legs and heads of Solenopsis invicta Buren workers. Furthermore, Si-CSP1-silenced workers moved significantly fewer corpses of their nestmates than normal workers. Finally, Si-CSP1-silenced workers exhibited weaker antennal responses to oleic acid and linoleic acid than controls. These results suggest that Si-CSP1 functions by sensing oleic acid and linoleic acid associated with dead colony members and regulating the necrophoric behavior of workers in S. invicta
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