Mosquitoes are vectors of many human diseases. The vectorial capacity of mosquitoes is directly a consequence of olfactory driven, host seeking behaviors. Olfaction in mosquitoes is mediated by several gene families which encode the olfactory receptors present in the major chemosensory appendages (antenna and maxillary palp) of the adult mosquito. Here, we employ RNA-seq to elucidate the transcriptional profile of these appendages in the major Afrotropical vector mosquito Anopheles gambiae. By then integrating odorant receptor functional information with the quantitative transcriptional data, we construct a synthetic model of the chemoreceptive capacity of the entire mosquito antennae. This model is then assessed against known mosquito behaviors to add a phenotypic dimension to the models. In all we conclude that olfactory receptors in the peripheral olfactory system are subtly dynamic based upon the physiological state of the mosquito. Moreover, these subtle differences are also manifest when compared to a closely related sibling species, and the resulting model is in agreement with known phenotypic differences between the species. In all we have added further evidence to the generalizable notion that peripheral odor coding at the level of olfactory receptors is sufficient to explain many observable differences in olfactory-driven behaviors.
| Identifer | oai:union.ndltd.org:VANDERBILT/oai:VANDERBILTETD:etd-11212015-163755 |
| Date | 27 November 2015 |
| Creators | Rinker, David C |
| Contributors | Doug Mortlock |
| Publisher | VANDERBILT |
| Source Sets | Vanderbilt University Theses |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.library.vanderbilt.edu/available/etd-11212015-163755/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Vanderbilt University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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