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Mating success depends on rearing substrate in cactophilic Drosophila
journal contribution
posted on 2012-05-01, 00:00 authored by J Hurtado, E M Soto, Liliana OrellanaLiliana Orellana, E HassonDrosophila buzzatii and D. koepferae coexist in the arid lands of southern South America and exploit different types of cactus as breeding hosts. The former prefers to lay eggs on the rotting pads of prickly pears (genus Opuntia) whereas D. koepferae exhibits greater acceptance for columnar cacti (e. g., Echinopsis terschekii). Here, we demonstrate that the rearing cacti affect male mating success, flies reared in each species' preferred host exhibited enhanced mating success than those raised in secondary hosts. Opuntia sulphurea medium endows D. buzzatii males with greater mating ability while D. koepferae males perform better when flies develop in Echinopsis terschekii. These effects are not mediated through body size, even in D. buzzatii whose body size happens to be affected by the rearing cacti. This scenario, which is consistent with the evolution of host specialization and speciation through sensory drive, emphasizes the importance of habitat isolation in the coexistence of these cactophilic Drosophila. © 2011 Springer Science+Business Media B.V.
History
Journal
Evolutionary EcologyVolume
26Issue
3Pagination
733 - 743Publisher
Springer NetherlandsLocation
Dordrecht , NetherlandsPublisher DOI
ISSN
0269-7653Language
engPublication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
2012, Springer NetherlandsUsage metrics
Keywords
Cactus hostsHabitat isolationHost specializationMating successSensory driveSexual selectionScience & TechnologyLife Sciences & BiomedicineEcologyEvolutionary BiologyGenetics & HeredityEnvironmental Sciences & EcologyLIFE-HISTORY TRAITSPHYTOPHAGOUS INSECTSPREMATING ISOLATIONNATURAL HOSTSBUZZATIIPERFORMANCEMOJAVENSISPREFERENCEKOEPFERAEFLIESEvolutionary BiologyEcology
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