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Reproductive Biology and Flower Visitors of Two Rare Species of sclerocactus (Cactaceae) in the Southwestern United States
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Reproductive Biology and Flower Visitors of Two Rare Species of sclerocactus (Cactaceae) in the Southwestern United States
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Journal Article
Reproductive Biology and Flower Visitors of Two Rare Species of sclerocactus (Cactaceae) in the Southwestern United States
2023
Overview
We used several pollination treatments and irregular collections of flower visitors to determine the breeding systems and likely pollinators of 2 rare species of Sclerocactus of the Colorado Plateau listed under the U.S. Endangered Species Act. We found one species, S. wrightiae, to be self-incompatible, and the other, S. mesae-verdae, to be partially self-compatible in the populations studied. Neither species was capable of setting fruits without the services of pollinators. The flower visitors and most likely pollinators of both species were various species of ground-nesting sweat bees (Halictidae). Management plans to conserve rare plant species must include support for studies to determine the nesting habitat and flight ranges of their pollinators so that their populations may also be protected. Utilizamos varios tratamientos de polinización y recolectas irregulares de visitantes florales para determinar los sistemas de reproducción y los posibles polinizadores de dos especies raras de Sclerocactus de la Meseta de Colorado incluidas en la Ley de Especies en Peligro de Extinción de los EE. UU. En las poblaciones estudiadas, encontramos una especie auto-incompatible (S. wrightiae), y otra parcialmente auto-compatible (S. mesae-verdae). Ninguna de las especies fue capaz de producir frutos sin los servicios de los polinizadores. Los visitantes florales y los polinizadores potenciales de ambas especies fueron varias especies de abejas sudoríparas que anidan en el suelo (Halictidae). Los planes de gestión para conservar especies de plantas raras deben incluir estudios para determinar el hábitat de anidación y rangos de vuelo de sus polinizadores para que estas poblaciones también puedan ser protegidas.
Publisher
Brigham Young University,Western North American Naturalist
Subject
