Fernando Nicolalde-Morejón

Fernando Nicolalde-Morejón
Universidad Veracruzana | UV · Instituto de Investigaciones Biológicas

PhD

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49
Publications
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Introduction
Skills and Expertise

Publications

Publications (49)
Chapter
Los patrones actuales de distribución geográfica y evolución de la flora en México se deben a diversos factores estrechamente relacionados con la ecología de las especies. La biogeografía es una disciplina integral que con la ecología y la sistemática permiten comprender el origen, evolución y diversidad de las especies. Además, provee información...
Article
The reproductive phenology in plants consists of successive life cycle phases leading to reproductive success. In seed plants, cycads and other dioecious groups have complex reproductive systems, where individuals require synchronizations among two sexes and populations of the same species. Here we analyzed phenology between populations of three ge...
Article
Ceratozamia is a neotropical genus in the Cycadales that is particularly diverse in Mexico. In this genus, most species are endemic to Mexico and most of these species have a restricted distribution pattern. We propose and describe a new species from western Oaxaca State, Mexico, which was previously subsumed under the concept of C. robusta. The ci...
Article
Ceratozamia, a genus of Zamiaceae, is one of the most species rich genera of gymnosperms in Mexico with a high level of species endemism. Over the last two decades, their known diversity has increased considerably because of extensive field work. Recently, 16 new species were described as a result of revision of species complexes and new exploratio...
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As an evolutionary lineage cycads are rare, and the extinction risk is high for many species. The genus Ceratozamia , one of the most diverse in Mexico, is experiencing drastic reductions of its habitat. Ceratozamia is widely distributed along the Sierra Madre Oriental, a complex mountain range, in a region characterized by high ecological and cult...
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Ceratozamia is a genus of cycads occurring in eastern Mexico and Central America. In this study, we describe a new species from the Pacific region of Mexico in Guerrero state. This locality represents the most northwestern Mexico distribution for the genus. We focus the comparison of this species with the most geographically proximate and phenotypi...
Article
Research on urban systems has documented the contributions of cities as sites where insect pollinators undergo their life cycles, contributing to the reproduction of many groups of plants. However, reports of plants whose reproduction is assisted by specialist pollinators under conditions prevalent in cities are scarce. Cycads and insect pollinator...
Article
Here we present a circumscription with qualitative and quantitative morphological comparison including all populations of Zamia along the coastal plain of Pacific Mexico. We recognize four species in this area: Z. paucijuga, Z. herrerae, Z. spartea and the new species, Z. stenophyllidia is described as new cycad species from Michoacán, Mexico. This...
Article
RESUMEN. Dos nuevas especies de Pharaxonotha Reitter, 1875 son descritas desde México. Ilustraciones y una clave para identificar las especies conocidas de Pharaxonotha del Nuevo Mundo son dadas. El género Ceratozamia Brongn (Zamiaceae) se registra como hospedero de Pharaxonotha mexicana sp. nov. y P. tenuis sp. nov. por primera vez. Los especímene...
Article
Two new species of Pharaxonotha Reitter, 1875 are described from Mexico. Illustrations are provided, as a key to identify Pharaxonotha known from the New World. The genus Ceratozamia Brongn (Zamiaceae) is recorded as a host to Pharaxonotha mexicana sp. nov. y P. tenuis sp. nov. for the rst time. Specimens were collected directly in the cones of mal...
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The genus Ceratozamia is revised for the Sierra Madre Oriental in Mexico. This region is one of the biogeographic areas with the greatest diversity of species in this genus. These species are highly variable morphologically and this variability has led to a complex taxonomic history with many synonyms, particularly with reference to C.mexicana . We...
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This study addresses the taxonomic identity of Ceratozamia tenuis (Dyer) D. W. Stev. & Vovides, 2016, a binomial that has been related historically with the taxonomic concept of C. mexicana Brongn., 1846. We describe the phenological stages of the C. tenuis, the reproductive period, and the degree of synchrony between males and females in natural h...
Article
According to the integrative taxonomy (IT) framework, delimitation of taxonomic specimens into bona fide species requires the incorporation of multiple sources of biological evidence that jointly perform a role as systematic criteria. Here, we collected a combination of geographic, morphological (qualitative and quantitative), and molecular data se...
Article
Several Ceratozamia populations from the “Carso Huasteco” region in Mexico have a controversial circumscription and have been historically identified as Ceratozamia fuscoviridis. In this paper, we present a review of the taxonomic history of this species and provide taxa circumscriptions based on analyses of herbarium specimens from this region and...
Article
Recent collections of Ceratozamia from the Sierra Norte of Puebla, Mexico, point to a new undescribed species, which was previously subsumed under the concept of C. mexicana. Identification of this new species resulted from a review of three associated species: C. mexicana, C. tenuis, and C. delucana. Here we describe Ceratozamia totonacorum and pr...
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The study of morphological variation in heterogeneous environments provides evidence for understanding processes that determine the differences between species and interspecific adaptive strategies. In 14 populations of two closely related cycads from the genus Zamia (Zamia loddigesii and Z. prasina), the phenotypic variation was analyzed based on...
Article
A new species, from the montane region of Los Tuxtlas (state of Veracruz, Mexico), Ceratozamia subroseophylla, is proposed in accordance with the integrative taxonomy framework and through application of the taxonomic circle rationale. Our identification of this new species is the result of a thorough re-evaluation of four formerly described Cerato...
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Full-text available
We have investigated the phylogeographic structure and demographic history of Zamia paucijuga, based on 120 ITS2 and 117 psbK/I sequences from 13 populations distributed along the entire distribution range of the species. We have detected 15 ITS2 and four psbK/I haplotypes, for a total of 19. The genetic diversity estimated for psbK/I was relativel...
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Dentro de los grupos actuales de espermatofitas, plantas con semilla, las cícadas cuentan con el registro fósil más antiguo. A pesar de ello, su estatus como “fósiles vivientes” ha sido puesto en entredicho recientemente con base en resultados de estudios filogenéticos moleculares. El grupo presenta apomorfías morfológicas vegetativas y posiblement...
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With the recent proposal of matK and rbcL as core plant DNA barcoding regions by the Consortium for the Barcoding of Life Plant Working Group, the construction of reference libraries in the botanical DNA barcoding initiative has entered a new phase. However, in a recent DNA barcoding study in the three Mexican genera of the gymnosperm order Cycadal...
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Ceratozamia mixeorum was described in 1997 from the Sierra Mixe in the state of Oaxaca, a region from which this species is endemic. However, certain errors made at the time of holotype and isotypes designation were detected. On this basis, in accordance with the International Code of Botanical Nomenclature, the lectotypification of the species is...
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The genus Zamia in Megamexico includes 22 described species and one entity in the species dubium category (Z. verschaffeltii). During the last 2 decades, the genus Zamia has received attention in regional floristic treatments and, outstandingly, in a specialized monograph. Besides, some species in the genus have been the focus of several recent cyt...
Article
Full-text available
The genus Zamia in Megamexico includes 22 described species and one entity in the species dubium category (Z. verschaffeltii). During the last 2 decades, the genus Zamia has received attention in regional floristic treatments and, outstandingly, in a specialized monograph. Besides, some species in the genus have been the focus of several recent cyt...
Article
Full-text available
Allozyme diversity and population genetic structure studies were conducted in populations of two Mexican cycad species occurring in adjacent and closely related biogeographic regions. We evaluated if rarity traits in Dioon caputoi, a micro-endemic species, and Dioon merolae, a regional endemic with a wider distribution, influence levels of genetic...
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A DNA barcoding study was conducted to determine the optimal combination of loci needed for successful species-level molecular identification in three extant cycad genera—Ceratozamia, Dioon, and Zamia—that occur in Mexico. Based on conclusions of a previous multigene study in representative species of all genera in the Cycadales, we tested the DNA...
Article
Full-text available
The genus Zamia is revised for Mega-Mexico, with 22 species recognized and described. The study presents a taxonomic clarification for the genus in Mesoamerica, a contribution that provides the foundation for a future monograph for Zamia in the Neotropics. The largest proportion of species richness and endemism for the genus is concentrated in sout...
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The new species Dioon stevensonii, from the Rio Balsas basin spanning the states of Michoacan and Guerrero, Mexico, is described and illustrated. The description of this species implies a recircumscription of the populations of Dioon that constitute the previously characterised D. tomasellii, which also includes populations located in Durango, Naya...
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The diversity and genetic structure of the cycad Dioon sonorense (De Luca, Sabato & Vázq. Torres) Chemnick, T.J. Greg. & S. Salas-Mor. were evaluated from the four known populations in tropical dry forests of Sonora, Mexico. The estimates of genetic diversity in the 19 loci analysed were: mean number of alleles per locus (A = 2.0), percentage of po...
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We have estimated levels of genetic diversity and partitioning in the Mexican endemic cycad species Dioon sonorense, Dioon tomasellii, and Dioon holmgrenii, whose populations are exclusively distributed along the Pacific seaboard. For the three species, the patterns of variation at 19 allozyme loci in a total of 11 populations were evaluated. The a...
Article
The morphological variation of recently described species (also the older taxa) of Zamia distributed within southeastern Mexico that have wide, coriaceous leaflets is analyzed. The complex is designated as the Z. katzeriana species complex in reference to an historic collection of this name, which is also the earliest named species in the complex....
Article
Full-text available
The genetic diversity and structure of four populations of the cycad Zamia loddigesii were studied throughout its range in Mexico. Allozyme electrophoresis of 15 loci was conducted. The mean number of alleles per locus was 1.80 ± 0.09, the percentage of polymorphic loci was 66.6 ± 5.4, and the expected heterozygosity was 0.266 ± 0.02. The results i...

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Projects

Projects (3)
Project
Application of the 'integrative taxonomy' conceptual framework (sensu Robert DeSalle and collaborators; American Museum of Natural History, New York, USA) to empirical data sets obtained from selected taxonomic groups of seed plants with high levels of diversity in Mexico.
Project
Evaluate the effect of disturbing on genetic and estructure of mexican cycad populations.