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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2018
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44955366024 https://www.redalyc.org/journal/449/44955366024/ https://www.redalyc.org/journal/449/44955366024/html/ https://www.redalyc.org/journal/449/44955366024/44955366024.epub https://www.redalyc.org/journal/449/44955366024/movil |
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Table of Contents:
- Identification and evaluation of (3Z, 6Z, 8E)-dodeca-3, 6, 8-trien-1-ol as the trail following pheromone on Microcerotermes exiguous (Isoptera:Termitidae) Giuseppe Lubes Aivlé Cabrera Biología 6Z MS GC ol (3Z Trail-following pheromone is one of the most important semiochemical in termites. This pheromone is responsible for the recruitment of individuals from the colony to perform different tasks. The aim of this work was to isolate and identify the trail-following pheromone of Microcerotermes exiguus (Isoptera: Termitidae), a typical termite from the Neotropic, that is considered pest in some crops. Subterranean nest of M. exiguus were collected with a shovel in Caracas, Venezuela in 2010. Different chemical micro-reactions combined with chromatographic analysis of solvent extracts, as well as solid phase microextraction analyses (SPME) were applied to termite sternal glands; besides, some behavioral biossays were undertaken. A peak in the chromatograms from extracts (retention index: 1 483), presented a fragmentation pattern with m/z ions: 41; 55; 67; 79; 91; 105; 119; 135; 142; 180, this result alongside behavioral assays allowed us to conclude that (3Z,6Z,8E)-dodeca-3, 6, 8-trien-1-ol (DTOH) acts as the main component of the trail following pheromone. The estimated optimum concentration for termite recruitment and orientation was around 1 pg/cm, being statistically comparable to the value on trails marked with whole body extracts at concentration of 1 worker/cm. The period of time that this compound takes to recruit other colony members is 13.67 ± 5.76 s and lasts up to two hours. Both analytical and behavioral results provided better understanding on the chemical communication of M. exiguus. This information could be used for the future development of newer pest control methods. Rev. Biol. Trop. 66(1): 303-311. Epub 2018 March 01. 2018 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44955366024 https://www.redalyc.org/journal/449/44955366024/ https://www.redalyc.org/journal/449/44955366024/html/ https://www.redalyc.org/journal/449/44955366024/44955366024.epub https://www.redalyc.org/journal/449/44955366024/movil 10.15517/rbt.v66i1.27111 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.66