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dc.contributor.authorColosimo, Giuliano
dc.contributor.authorDi Marco, Gabriele
dc.contributor.authorD’Agostino, Alessia
dc.contributor.authorGismondi, Angelo
dc.contributor.authorVera, Carlos A.
dc.contributor.authorGerber, Glenn P.
dc.contributor.authorScardi, Michele
dc.contributor.authorCanini, Antonella
dc.contributor.authorGentile, Gabriele
dc.date.accessioned2020-09-21T21:49:34Z
dc.date.available2020-09-21T21:49:34Z
dc.date.issued2020
dc.identifier.eissn2045-2322
dc.identifier.doi10.1038/s41598-020-71176-7
dc.identifier.pii71176
dc.identifier.urihttp://hdl.handle.net/20.500.12634/709
dc.description.abstractThe only known population of Conolophus marthae (Reptilia, Iguanidae) and a population of C. subcristatus are syntopic on Wolf Volcano (Isabela Island, Galápagos). No gene flow occurs suggesting that effective reproductive isolating mechanisms exist between these two species. Chemical signature of femoral pore secretions is important for intra- and inter-specific chemical communication in squamates. As a first step towards testing the hypothesis that chemical signals could mediate reproductive isolation between C. marthae and C. subcristatus, we compared the chemical profiles of femoral gland exudate from adults caught on Wolf Volcano. We compared data from three different years and focused on two years in particular when femoral gland exudate was collected from adults during the reproductive season. Samples were processed using Gas Chromatography coupled with Mass Spectrometry (GC–MS). We identified over 100 different chemical compounds. Non-Metric Multidimensional Scaling (nMDS) was used to graphically represent the similarity among individuals based on their chemical profiles. Results from non-parametric statistical tests indicate that the separation between the two species is significant, suggesting that the chemical profile signatures of the two species may help prevent hybridization between C. marthae and C. subcristatus. Further investigation is needed to better resolve environmental influence and temporal reproductive patterns in determining the variation of biochemical profiles in both species.
dc.description.sponsorshipPost-Doctoral Research Fellowship from the San Diego Zoo Institute for Conservation Research funded by the Kenneth and Anne Griffin Foundationen_US
dc.language.isoenen_US
dc.publisherSpringer Science and Business Media LLCen_US
dc.rights© The Author(s) 2020en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.subjectIGUANASen_US
dc.subjectGALAPAGOSen_US
dc.subjectCOMMUNICATIONen_US
dc.subjectPHEROMONESen_US
dc.subjectEXPERIMENTAL METHODSen_US
dc.subjectSEXUAL BEHAVIORen_US
dc.subjectHYBRIDIZATIONen_US
dc.titleChemical signatures of femoral pore secretions in two syntopic but reproductively isolated species of Galápagos land iguanas (Conolophus marthae and C. subcristatus)en_US
dc.typeArticleen_US
dc.source.journaltitleScientific Reportsen_US
dc.source.volume10en_US
dc.source.issue1en_US
dc.source.beginpage14314en_US
dcterms.dateAccepted2020
refterms.dateFOA2020-09-21T21:49:34Z
html.description.abstractThe only known population of Conolophus marthae (Reptilia, Iguanidae) and a population of C. subcristatus are syntopic on Wolf Volcano (Isabela Island, Galápagos). No gene flow occurs suggesting that effective reproductive isolating mechanisms exist between these two species. Chemical signature of femoral pore secretions is important for intra- and inter-specific chemical communication in squamates. As a first step towards testing the hypothesis that chemical signals could mediate reproductive isolation between C. marthae and C. subcristatus, we compared the chemical profiles of femoral gland exudate from adults caught on Wolf Volcano. We compared data from three different years and focused on two years in particular when femoral gland exudate was collected from adults during the reproductive season. Samples were processed using Gas Chromatography coupled with Mass Spectrometry (GC–MS). We identified over 100 different chemical compounds. Non-Metric Multidimensional Scaling (nMDS) was used to graphically represent the similarity among individuals based on their chemical profiles. Results from non-parametric statistical tests indicate that the separation between the two species is significant, suggesting that the chemical profile signatures of the two species may help prevent hybridization between C. marthae and C. subcristatus. Further investigation is needed to better resolve environmental influence and temporal reproductive patterns in determining the variation of biochemical profiles in both species.en_US


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© The Author(s) 2020
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