Geographic variation in sexual attraction of Spodoptera frugiperda corn- and rice-strain males to pheromone lures.
The corn- and rice-strains of Spodoptera frugiperda exhibit several genetic and behavioral differences and appear to be undergoing ecological speciation in sympatry. Previous studies reported conflicting results when investigating male attraction to pheromone lures in different regions, but this cou...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2014-01-01
|
| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0089255&type=printable |
| _version_ | 1826588525074579456 |
|---|---|
| author | Melanie Unbehend Sabine Hänniger Gissella M Vásquez María Laura Juárez Dominic Reisig Jeremy N McNeil Robert L Meagher David A Jenkins David G Heckel Astrid T Groot |
| author_facet | Melanie Unbehend Sabine Hänniger Gissella M Vásquez María Laura Juárez Dominic Reisig Jeremy N McNeil Robert L Meagher David A Jenkins David G Heckel Astrid T Groot |
| author_sort | Melanie Unbehend |
| collection | DOAJ |
| description | The corn- and rice-strains of Spodoptera frugiperda exhibit several genetic and behavioral differences and appear to be undergoing ecological speciation in sympatry. Previous studies reported conflicting results when investigating male attraction to pheromone lures in different regions, but this could have been due to inter-strain and/or geographic differences. Therefore, we investigated whether corn- and rice-strain males differed in their response to different synthetic pheromone blends in different regions in North America, the Caribbean and South America. All trapped males were strain-typed by two strain-specific mitochondrial DNA markers. In the first experiment, we found a nearly similar response of corn- and rice-strain males to two different 4-component blends, resembling the corn- and rice-strain female blend we previously described from females in Florida. This response showed some geographic variation in fields in Canada, North Carolina, Florida, Puerto Rico, and South America (Peru, Argentina). In dose-response experiments with the critical secondary sex pheromone component (Z)-7-dodecenyl acetate (Z7-12:OAc), we found some strain-specific differences in male attraction. While the response to Z7-12:OAc varied geographically in the corn-strain, rice-strain males showed almost no variation. We also found that the minor compound (Z)-11-hexadecenyl acetate (Z11-16:OAc) did not increase attraction of both strains in Florida and of corn-strain males in Peru. In a fourth experiment, where we added the stereo-isomer of the critical sex pheromone component, (E)-7-dodecenyl acetate, to the major pheromone component (Z)-9-tetradecenyl acetate (Z9-14:OAc), we found that this compound was attractive to males in North Carolina, but not to males in Peru. Overall, our results suggest that both strains show rather geographic than strain-specific differences in their response to pheromone lures, and that regional sexual communication differences might cause geographic differentiation between populations. |
| first_indexed | 2024-12-13T14:57:01Z |
| format | Article |
| id | doaj.art-10c7fc6d8da145d29f8ce015cd53ea3a |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2025-03-14T16:42:42Z |
| publishDate | 2014-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-10c7fc6d8da145d29f8ce015cd53ea3a2025-02-21T05:38:50ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-0192e8925510.1371/journal.pone.0089255Geographic variation in sexual attraction of Spodoptera frugiperda corn- and rice-strain males to pheromone lures.Melanie UnbehendSabine HännigerGissella M VásquezMaría Laura JuárezDominic ReisigJeremy N McNeilRobert L MeagherDavid A JenkinsDavid G HeckelAstrid T GrootThe corn- and rice-strains of Spodoptera frugiperda exhibit several genetic and behavioral differences and appear to be undergoing ecological speciation in sympatry. Previous studies reported conflicting results when investigating male attraction to pheromone lures in different regions, but this could have been due to inter-strain and/or geographic differences. Therefore, we investigated whether corn- and rice-strain males differed in their response to different synthetic pheromone blends in different regions in North America, the Caribbean and South America. All trapped males were strain-typed by two strain-specific mitochondrial DNA markers. In the first experiment, we found a nearly similar response of corn- and rice-strain males to two different 4-component blends, resembling the corn- and rice-strain female blend we previously described from females in Florida. This response showed some geographic variation in fields in Canada, North Carolina, Florida, Puerto Rico, and South America (Peru, Argentina). In dose-response experiments with the critical secondary sex pheromone component (Z)-7-dodecenyl acetate (Z7-12:OAc), we found some strain-specific differences in male attraction. While the response to Z7-12:OAc varied geographically in the corn-strain, rice-strain males showed almost no variation. We also found that the minor compound (Z)-11-hexadecenyl acetate (Z11-16:OAc) did not increase attraction of both strains in Florida and of corn-strain males in Peru. In a fourth experiment, where we added the stereo-isomer of the critical sex pheromone component, (E)-7-dodecenyl acetate, to the major pheromone component (Z)-9-tetradecenyl acetate (Z9-14:OAc), we found that this compound was attractive to males in North Carolina, but not to males in Peru. Overall, our results suggest that both strains show rather geographic than strain-specific differences in their response to pheromone lures, and that regional sexual communication differences might cause geographic differentiation between populations.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0089255&type=printable |
| spellingShingle | Melanie Unbehend Sabine Hänniger Gissella M Vásquez María Laura Juárez Dominic Reisig Jeremy N McNeil Robert L Meagher David A Jenkins David G Heckel Astrid T Groot Geographic variation in sexual attraction of Spodoptera frugiperda corn- and rice-strain males to pheromone lures. PLoS ONE |
| title | Geographic variation in sexual attraction of Spodoptera frugiperda corn- and rice-strain males to pheromone lures. |
| title_full | Geographic variation in sexual attraction of Spodoptera frugiperda corn- and rice-strain males to pheromone lures. |
| title_fullStr | Geographic variation in sexual attraction of Spodoptera frugiperda corn- and rice-strain males to pheromone lures. |
| title_full_unstemmed | Geographic variation in sexual attraction of Spodoptera frugiperda corn- and rice-strain males to pheromone lures. |
| title_short | Geographic variation in sexual attraction of Spodoptera frugiperda corn- and rice-strain males to pheromone lures. |
| title_sort | geographic variation in sexual attraction of spodoptera frugiperda corn and rice strain males to pheromone lures |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0089255&type=printable |
| work_keys_str_mv | AT melanieunbehend geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT sabinehanniger geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT gissellamvasquez geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT marialaurajuarez geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT dominicreisig geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT jeremynmcneil geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT robertlmeagher geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT davidajenkins geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT davidgheckel geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures AT astridtgroot geographicvariationinsexualattractionofspodopterafrugiperdacornandricestrainmalestopheromonelures |