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- W2598990061 abstract "The neotropical parasitoid Conura annulifera (Walker) (Hymenoptera: Chalcididae) is known to parasitize bird-parasitic flies in the genus Philornis (Diptera: Muscidae) including P. downsi (Dodge and Aitken), a species that has invaded the Galápagos islands and is negatively impacting populations of Darwin’s finches. We report here some aspects of the life history, field ecology, and host specificity of C. annulifera. We collected puparia of four Philornis species in 13 bird nests during 2015 and 2016 in western mainland Ecuador and found that C. annulifera and three other parasitoid species emerged from those puparia. This is the first record of C. annulifera in Ecuador. Rearing records and dissections of parasitized puparia revealed that C. annulifera is a solitary pupal ectoparasitoid, placing its eggs in the gap between host pupa and puparium. Laboratory studies of host specificity involving P. downsi and pupae from five other dipteran, three lepidopteran, and one hymenopteran species found that C. annulifera only produced progeny when presented with P. downsi pupae. Pupae of P. downsi that had been exposed to C. annulifera also failed to emerge more often than expected by chance compared with no-parasitoid controls, suggesting that the parasitoids can cause developmental mortality through means other than successful parasitism. These studies constitute the first steps in evaluating C. annulifera as a potential biological control agent of P. downsi in the Galápagos Islands. El parasitoide neotropical Conura annulifera (Walker) (Hymenoptera: Chalcididae) parasita moscas parásitas de aves en el género Philornis (Diptera: Muscidae), incluyendo a la especie P. downsi (Dodge y Aitken) que ha invadido las Islas Galápagos y está afectando negativamente las poblaciones de pinzones de Darwin. Aquí describimos algunos aspectos de la historia de vida, ecología de campo y especificidad de huéspedes de C. annulifera. Se colectaron pupas de cuatro especies de Philornis en 13 nidos de aves durante 2015 y 2016 en el oeste de Ecuador continental. Conura annulifera y otras tres especies de parasitoides emergieron de estos puparios. Este constituye el primer registro de C. annulifera en Ecuador. Registros de crianza y disecciones de puparios parasitados mostraron que C. annulifera es un ectoparasitoide solitario de pupas, que coloca su huevo/s en el espacio que existe entre la pupa del huésped y el pupario. Estudios de especificidad de huéspedes realizados en laboratorio con pupas de P. downsi y de otras cinco especies de dípteros, tres especies de lepidópteros y una especie de himenóptero demostraron que C. annulifera solo produjo descendencia cuando se le ofrecieron pupas de P. downsi. Asimismo, las pupas de P. downsi expuestas a C. annulifera emergieron en menor proporción que lo esperado al azar con respecto a controles no expuestos a parasitoides, lo que sugiere que los parasitoides pueden causar mortalidad durante el desarrollo a través de otras formas que el parasitismo exitoso. Estos estudios constituyen los primeros pasos en la evaluación de C. annulifera como un agente de control biológico potencial de P. downsi en las Islas Galápagos." @default.
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- W2598990061 date "2017-02-17" @default.
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- W2598990061 title "Life Cycle and Host Specificity of the Parasitoid Conura annulifera (Hymenoptera: Chalcididae), a Potential Biological Control Agent of Philornis downsi (Diptera: Muscidae) in the Galápagos Islands" @default.
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- W2598990061 doi "https://doi.org/10.1093/aesa/saw102" @default.
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