Buscar en Google Scholar
Título: Reproductive biology in Gomphichis valida Rchb. f. (Orchidaceae: Orchidoideae, Cranichidinae): Generalist pollination in a high-Andean terrestrial orchid with long-lived flowers
Palabras clave: bumblebeeshummingbirdsPeru
Campo OCDE: https://purl.org/pe-repo/ocde/ford#1.06.16
Fecha de publicación: 2024
Institución: Universidad Nacional de San Agustín de Arequipa
Resumen: Floral features, the pollination process, the breeding system, and fruiting successare documented in the Andean terrestrial orchid Gomphichis valida. Studies were performed at the Department of Ancash, Peru, at ca. 4250 m a.s.l., from June to November 2022. The breeding system was studied through controlled pollinations in plants excluded from pollinators (bagged). Natural pollination was studied in the field and through photos and videos. The flowers are nectariferous and non-protandrous and present the longest lifespan reported so far for a neotropical terrestrial orchid (53–80 days). This species is pollinator dependent (unable to set fruit and seed without the agency of pollinators) and self-compatible. The observed pollinators belong to three functional groups that appeared successively (in order of appearance): hummingbirds (Chalcostigma stanleyi), bumblebees (Bombus coccineus and Bombus rubicundus), and solitary Halictidae bees (Augochlorella sp.). All recorded pollinators probe the flowers for nectar. The pollinaria adhere to the bee mouthparts and onto the lateral side of the hummingbird Bill. Bumblebees were the most frequent and efficient functional group (up to 62.07% of the observed pollination events), followed by Halictidae (31.03%) and hummingbirds (6.90%). Natural fruiting success is high (66.66%–94.49%). Such high natural fruiting success is unexpected at high altitudes, but it is likely explained by a combination of factors, including the long floral lifespan, néctar secretion, and self-compatibility. This is the first report of hummingbirds as pollinators of Cranichidinae orchids, and G. valida is, to the best of our knowledge, a neotropical orchidoid orchid with the most generalist pollination biology recorded so far.
Disciplina académico-profesional: Biología
Institución que otorga el grado o título: Universidad Nacional de San Agustín de Arequipa.Facultad de Ciencias Biológicas
Grado o título: Biólogo
Jurado: Quipuscoa Silvestre, Victor; Mariño Herrera, Leoncio Claudio; Bustos Singer, Rodrigo
Fecha de registro: 22-oct-2024



IMPORTANTE
La información contenida en este registro es de entera responsabilidad de la universidad, institución o escuela de educación superior que administra el repositorio académico digital donde se encuentra el trabajo de investigación y/o proyecto, los cuales son conducentes a optar títulos profesionales y grados académicos. SUNEDU no se hace responsable por los contenidos accesibles a través del Registro Nacional de Trabajos de Investigación – RENATI.