6
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Distribución potencial y nicho fundamental de Moniliophthora spp en cacao de América y África Translated title: Potential distribution and fundamental niche of Moniliophthora spp in cocoa of America and Africa

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Resumen Introducción. Las especies de Moniliophthora spp. son endémicas de Sudamérica e infectan los cultivos de cacao de América. Objetivo. El objetivo del estudio fue analizar la distribución potencial y el nicho fundamental de Moniliophthora roreri (Mr) y M. perniciosa (Mp) en América y África. Materiales y métodos. Los registros de ocurrencia fueron obtenidos de una revisión bibliográfica. Se utilizaron variables bioclimáticas como predictores en el modelo de nicho de máxima entropía (MaxEnt) y para su visualización en Niche Analyst 3.0. Resultados. Las zonas donde se registró mayor probabilidad de ocurrencia de Mr fueron Esmeraldas y Los Ríos, Ecuador, zonas costeras de Costa Rica, Santander y Antioquia de Colombia, y para Mp los Estados de Bahía y Acré de Brasil. Las variables que más influyeron en la distribución de Mr están asociadas a las precipitaciones. Las condiciones relacionadas con la temperatura fueron más importantes en el modelo de Mp. Se identificó el riesgo de invasión de Mr en las regiones de Acré y Pará, Brasil. La transferencia de los modelos evidenció el potencial de invasión de Mr y Mp en los cultivos de cacao en África. El nicho fundamental de los patógenos y el cacao presentó valores de similitud medios, mientras que, el nicho de las especies de hongos mostró una baja similitud. La baja similitud de los nichos de los patógenos y las diferencias en las variables bioclimáticas que afectan su distribución se podrían relacionar a un proceso de partición del nicho. Conclusión. Se identificaron las regiones geográficas con una mayor distribución potencial de los patógenos y las características bioclimáticas que favorecerían su probabilidad de presencia en los cultivos de cacao de América. Es necesario regular el transporte de material vegetal y equipo contaminado entre regiones para evitar la introducción de los patógenos en cultivos de cacao sanos.

          Translated abstract

          Abstract Introduction. Moniliophthora spp. species are endemic from South America and infect America’s cocoa crops. Objetive. The objective of the study was to analyze the potential distribution and the fundamental niche of Moniliophthora roreri (Mr) and M. perniciosa (Mp) in America and Africa. Materials and methods. The occurrence records were obtained from a bibliographic review. Bioclimatic variables were used as predictors in the maximum entropy niche model (MaxEnt) and for its visualization in Niche Analyst 3.0. Results. The areas where Mr was most likely to occur were Esmeraldas and Los Ríos, Ecuador, coastal zones of Costa Rica, Santander and Antioquia of Colombia, and for Mp the States of Bahia and Acré of Brazil. The variables that most influenced the distribution of Mr are those associated with precipitation. Temperature-related conditions were more important in the Mp model. The risk of Mr invasion was identified in the Acre and Pará regions, Brazil. The transfer of the models evidenced the potential of Mr and Mp invasion in cocoa crops in Africa. The fundamental niche of pathogens and cocoa showed average similarity values, while the niche of fungal species showed a low similarity. Low pathogen niche similarity and differences in bioclimatic variables affecting pathogens distribution were related to a process of niche partitioning. Conclusion. Geographical regions with a greater potential distribution of pathogens and bioclimatic characteristics that would favor their probability of presence in America’s cocoa crops were identified. It is necessary to regulate the transport of contaminated plant material and equipment between regions to avoid the introduction of pathogens in healthy cocoa crops.

          Related collections

          Most cited references44

          • Record: found
          • Abstract: not found
          • Article: not found

          SDMtoolbox: a python-based GIS toolkit for landscape genetic, biogeographic and species distribution model analyses

            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Trait-based tests of coexistence mechanisms.

            Recent functional trait studies have shown that trait differences may favour certain species (environmental filtering) while simultaneously preventing competitive exclusion (niche partitioning). However, phenomenological trait-dispersion analyses do not identify the mechanisms that generate niche partitioning, preventing trait-based prediction of future changes in biodiversity. We argue that such predictions require linking functional traits with recognised coexistence mechanisms involving spatial or temporal environmental heterogeneity, resource partitioning and natural enemies. We first demonstrate the limitations of phenomenological approaches using simulations, and then (1) propose trait-based tests of coexistence, (2) generate hypotheses about which plant functional traits are likely to interact with particular mechanisms and (3) review the literature for evidence for these hypotheses. Theory and data suggest that all four classes of coexistence mechanisms could act on functional trait variation, but some mechanisms will be stronger and more widespread than others. The highest priority for future research is studies of interactions between environmental heterogeneity and trait variation that measure environmental variables at within-community scales and quantify species' responses to the environment in the absence of competition. Evidence that similar trait-based coexistence mechanisms operate in many ecosystems would simplify biodiversity forecasting and represent a rare victory for generality over contingency in community ecology. © 2013 John Wiley & Sons Ltd/CNRS.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Phylogenetic limiting similarity and competitive exclusion.

              One of the oldest ecological hypotheses, proposed by Darwin, suggests that the struggle for existence is stronger between more closely related species. Despite its long history, the validity of this phylogenetic limiting similarity hypothesis has rarely been examined. Here we provided a formal experimental test of the hypothesis using pairs of bacterivorous protist species in a multigenerational experiment. Consistent with the hypothesis, both the frequency and tempo of competitive exclusion, and the reduction in the abundance of inferior competitors, increased with increasing phylogenetic relatedness of the competing species. These results were linked to protist mouth size, a trait potentially related to resource use, exhibiting a significant phylogenetic signal. The likelihood of coexistence, however, was better predicted by phylogenetic relatedness than trait similarity of the competing species. Our results support phylogenetic relatedness as a useful predictor of the outcomes of competitive interactions in ecological communities. © 2011 Blackwell Publishing Ltd/CNRS.
                Bookmark

                Author and article information

                Journal
                am
                Agronomía Mesoamericana
                Agron. Mesoam
                Universidad de Costa Rica. Programa Cooperativo Centroamericano para el Mejoramiento Cultivos y Animales (San Pedro, San José, Costa Rica )
                1659-1321
                2215-3608
                December 2019
                : 30
                : 3
                : 659-679
                Affiliations
                [1] orgnameUniversidad de Antioquia (UdeA) Colombia julian.masmela@ 123456udea.edu.co
                Article
                S1659-13212019000300659 S1659-1321(19)03000300659
                10.15517/am.v30i3.35038
                4dd55be2-8b32-4514-ba4a-01f72caf0f75

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 International License.

                History
                : 31 October 2018
                : 21 March 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 65, Pages: 21
                Product

                SciELO Costa Rica

                Categories
                Artículo

                microbial ecology,pathogenic fungi,host pathogen relations,biogeografía,Theobroma cacao,ecología microbiana,hongos patógenos,biogeography,interacción huésped patógeno

                Comments

                Comment on this article