Fenología, sincronía floral y éxito reproductivo de Neolloydia conoidea (Cactaceae)

Keywords: Flowering pattern, fruit set, kernels’ density estimators, seed set

Abstract

Background: Studies on flowering patterns, floral synchrony and reproductive success in cacti are incipient. Reproductive biology of most cacti species is unknown, such as the case of the globose cactus Neolloydia conoidea.

Questions: How is the pattern of flowering at the population level? How is the floral synchrony? Is there a relationship between floral synchrony and reproductive success?

Species: Neolloydia conoidea (DC.) Britton & Rose (Cactaceae).

Study site and dates: Municipality of Tolimán, Querétaro, México. Two years of observations (N = 146 individuals in 2015, 142 in 2016) in a population of Neolloydia conoidea.

Methods: Census of flowers in anthesis and analysis of flowering phenology through Kernel Density Estimators (KDE) and Gaussian components. Determination of floral synchrony through Augspurger (SA) and Marquis (SM) indexes and comparison of reproductive success (fruit set and seed set) per year and per pulse.

Results: Neolloydia conoidea presents a flowering of pulsed pattern with low synchrony levels. This is the first record of this strategy for a globose cactus, although a similar pattern has already been reported for a columnar cactus. We suggest that this could represent a reproductive strategy of "bet hedging" on study site.

Conclusions: Neolloydia conoidea presents a pattern of flowering in pulses with low levels of synchrony. This is the first record of such a strategy for a globose cactus, although a similar pattern has already been reported for a columnar cactus. We suggest that this could represent a “bet hedging” strategy at the study site.

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Author Biographies

Erika Arroyo-Pérez, UNIVERSIDAD AUTÓNOMA METROPOLITANA

Departamento de Biologia

Estudiante del Doctorado en Ciencias Biologicas y de la Salud

Cecilia Leonor Jiménez-Sierra, UNIVERSIDAD AUTÓNOMA METROPOLITANA

Departamento de Biologia 

Profesor titular "c"

José Alejandro Zavala-Hurtado, UNIVERSIDAD AUTÓNOMA METROPOLITANA

Departamento de Biologia 

Profesor titular "c"

Joel David Flores-Rivas, Instituto Potosino de Investigación Científica y Tecnológica

División de Ciencias Ambientales

Coordinador Académico de CIIDZA

Fenología, sincronía floral y éxito reproductivo de <em>Neolloydia conoidea</em> (Cactaceae)

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Published
2019-12-19
How to Cite
Arroyo-Pérez, E., Jiménez-Sierra, C. L., Zavala-Hurtado, J. A., Flores-Rivas, J. D., & Salgado-Ugarte, I. H. (2019). Fenología, sincronía floral y éxito reproductivo de <em>Neolloydia conoidea</em&gt; (Cactaceae). Botanical Sciences, 97(4), 579-587. https://doi.org/10.17129/botsci.2184