Beetle pollination and floral thermogenicity in Magnolia tamaulipana (Magnoliaceae)

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:00Z
Fecha de publicación1999-01-01
ResumenThe pollination biology involving floral thermogenicity of Magnolia tamaulipana was conducted at the El Cielo Reserve in Tamaulipas, Mexico, during May 1996. Our results indicate that M. tamaulipana possesses a highly specialized beetle pollination system involving Cyclocephala (Scarabaeidae: Dynastinae) and members of the Staphylinidae, Of the 366 insects visiting 213 flowers of M. tamaulipana, 364 were beetles. Cyclocephala caelestis accounted for 52\% and Myrmecocephalus sp. for 46\% of the visits. Breeding system experiments indicated that the flowers were self-compatible but only 44\% of the open-pollinated stigmas were pollinated, Cyclocephala caelestis was frequently observed to feed on petals but never sepals. As a reward, flowers offered petals high in carbohydrate and low in fiber to Cyclocephala. The protogynous flowers of M, tamaulipana opened at night, were viable for a maximum of 24 h, and were thermogenic. Flowers were hottest when they first opened and female. Floral temperatures gradually declined with time and hence sexual phase and, 24 h after anthesis, were not different from ambient. Excess floral temperatures ranged from 1.0 degrees to 9.3 degrees C for female-phase flowers and from 0.2 degrees to 5.0 degrees C for male-phase flowers. The two species of beetles showed differential visitation to trees associated with floral thermogenicity. Our data indicate that large-flowered trees dissipate more heat and, therefore, more floral odor from their petals than small-flowered trees, thereby attracting a greater number of Cyclocephala.es_ES
Doihttps://doi.org/10.1086/314099es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4824
Idiomaenes_ES
EditorialUNIV CHICAGO PRESSes_ES
RelaciónInternational Journal of Plant Scienceses_ES
URL relacionadohttps://doi.org/10.1086/314099es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteInternational Journal of Plant Sciences
Palabra claveMagnoliaes_ES
Palabra claveCyclocephalaes_ES
Palabra clavefloral thermogenicityes_ES
Palabra claveMexicoes_ES
Palabra clavecloud forestes_ES
Palabra clavepollinationes_ES
Palabra clavereproductive biologyes_ES
TítuloBeetle pollination and floral thermogenicity in Magnolia tamaulipana (Magnoliaceae)es_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorDieringer, G
AutorCabrera, L
AutorLara, M
AutorLoya, L
AutorReyes-Castillo, P
AutorDieringer, Ges_ES
AutorCabrera, Les_ES
AutorLara, Mes_ES
AutorLoya, Les_ES
AutorReyes-Castillo, Pes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número1es_ES
Rango de páginas64-71es_ES
URL relacionadahttps://doi.org/10.1086/314099
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen160es_ES

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