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No. de sistema: 000059285

LDR _ _ 00000nab^^22^^^^^za^4500
008 _ _ 190812m20189999xx^^r^p^o^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
043 _ _ a| n-mx-cp
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245 0 0 a| Discrimination of odors associated with conspecific and heterospecific frass by sibling species Dendroctonus frontalis (Coleoptera: Curculionidae: Scolytinae) and Dendroctonus mesoamericanus (Coleoptera: Curculionidae: Scolytinae)
506 _ _ a| Disponible para usuarios de ECOSUR con su clave de acceso
520 1 _ a| In the Central American region, the aggressive, sibling bark beetles Dendroctonus frontalis Zimmermann (Coleoptera: Curculionidae: Scolytinae) and Dendroctonus mesoamericanus Armendáriz-Toledano & Sullivan (Coleoptera: Curculionidae: Scolytinae) commonly colonize pines concurrently, and in nature they avoid heterospecific pairing, although it can be produced in the lab. We performed walking arrestment bioassays in the lab to examine the capacity of both sexes of both species to discriminate odors from frass expelled from gallery entrances of either solitary females or conspecific pairs of either species. Males of both species strongly preferred odors of frass from solitary, conspecific females over those of heterospecific females or pairs of either species. Female D. frontalis did not discriminate among these frass categories, whereas female D. mesoamericanus preferred frass of conspecific females. In gas chromatography–electroantennographic detection and gas chromatography–mass spectrometry analyses, we determined that males of both species could sense a nearly identical spectrum of approximately 16 host- and beetle-produced compounds present in frass of females of one or both species. Only two of these compounds, endo-brevicomin and ipsdienol, which were present in frass of female D. mesoamericanus and pairs of either species but absent in frass of solitary D. frontalis females, qualitatively distinguished these categories. Several known attractants and synergists for either species declined in concentration postpairing. Our results complement earlier research and indicate how semiochemical composition and concentration in frass might mediate male discrimination of attack sites of conspecific, unpaired females. Furthermore, our data indicate that semiochemical responses for walking females differ from those of males and between species.
533 _ _ a| Reproducción electrónica en formato PDF
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Dendroctonus frontalis
650 _ 4 a| Dendroctonus mesoamericanus
650 _ 4 a| Escarabajos de la corteza
650 _ 4 a| Semioquímicos
650 _ 4 a| Feromonas sexuales de insectos
650 _ 4 a| Electroantenografía
650 _ 4 a| Olfatómetros
650 _ 4 a| Pinus oocarpa
650 _ 4 a| Ciencias agropecuarias y biotecnología
651 _ 4 a| Parque Nacional Lagunas de Montebello (Chiapas, México)
700 1 _ a| Niño Domínguez, Alicia
700 1 _ a| Sullivan, Brian T.
e| coaut.
n| 57195957216
700 1 _ a| López Urbina, José Higinio
e| coaut.
700 1 _ a| Macías Sámano, J. E.
c| Doctor
e| coaut.
773 0 _
t| Environmental Entomology
g| Vol. 47, no. 6 (December 2018), p. 1532-1540
x| 0046-225X
900 _ _ a| Solicítelo con su bibliotecario/a
902 _ _ a| BG / MM
904 _ _ a| Agosto 2019
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Servibosques
905 _ _ a| Biblioelectrónica
906 _ _ a| Producción Académica ECOSUR
LNG eng
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*Solicítelo con su bibliotecario/a
Discrimination of odors associated with conspecific and heterospecific frass by sibling species Dendroctonus frontalis (Coleoptera: Curculionidae: Scolytinae) and Dendroctonus mesoamericanus (Coleoptera: Curculionidae: Scolytinae)
Niño Domínguez, Alicia (autor)
Sullivan, Brian T. (autor)
López Urbina, José Higinio (autor)
Macías Sámano, J. E. (autor)
Nota: Disponible para usuarios de ECOSUR con su clave de acceso
Contenido en: Environmental Entomology. Vol. 47, no. 6 (December 2018), p. 1532-1540. ISSN: 0046-225X
No. de sistema: 59285
Tipo: Artículo
PDF


Inglés

"In the Central American region, the aggressive, sibling bark beetles Dendroctonus frontalis Zimmermann (Coleoptera: Curculionidae: Scolytinae) and Dendroctonus mesoamericanus Armendáriz-Toledano & Sullivan (Coleoptera: Curculionidae: Scolytinae) commonly colonize pines concurrently, and in nature they avoid heterospecific pairing, although it can be produced in the lab. We performed walking arrestment bioassays in the lab to examine the capacity of both sexes of both species to discriminate odors from frass expelled from gallery entrances of either solitary females or conspecific pairs of either species. Males of both species strongly preferred odors of frass from solitary, conspecific females over those of heterospecific females or pairs of either species. Female D. frontalis did not discriminate among these frass categories, whereas female D. mesoamericanus preferred frass of conspecific females. In gas chromatography–electroantennographic detection and gas chromatography–mass spectrometry analyses, we determined that males of both species could sense a nearly identical spectrum of approximately 16 host- and beetle-produced compounds present in frass of females of one or both species. Only two of these compounds, endo-brevicomin and ipsdienol, which were present in frass of female D. mesoamericanus and pairs of either species but absent in frass of solitary D. frontalis females, qualitatively distinguished these categories. Several known attractants and synergists for either species declined in concentration postpairing. Our results complement earlier research and indicate how semiochemical composition and concentration in frass might mediate male discrimination of attack sites of conspecific, unpaired females. Furthermore, our data indicate that semiochemical responses for walking females differ from those of males and between species."


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