<p>La papa (<em>Solanum tuberosum</em> L.) es uno de los cultivos de mayor consumo humano a nivel mundial. El cultivo es amenazado desde sus inicios por distintos organismos; algunos de ellos ocasionan daños superficiales en los tubérculos, que reducen la calidad y apariencia lo que provoca el rechazo por el consumidor. De un total de 34 muestras de tubérculos de papa destinados para consumo humano, obtenidas mediante muestreo visual dirigido, en la Central de Abastos de Ecatepec, se identificaron a los microorganismos asociados a algún daño físico o alteración superficial; además, de manchas atípicas en la superficie de tubérculos. Del total de las muestras en el 50% se identificaron a las bacterias <em>Enterobacter aerogenes</em>, <em>Pseudomonas fluorescens</em> y <em>Streptomyces</em> sp. En el 41% se identificaron a hongos y protozoarios como <em>Fusarium oxysporum</em>, <em>F. solani</em>, <em>F. verticillioides</em>, <em>Rhizoctonia solani</em>, <em>Alternaria</em> sp., <em>Colletotrichum</em> sp., <em>Clonostachys</em> sp., <em>Geotrichum</em> sp., y <em>Spongospora subterranea</em> f. sp. <em>subterranea</em>. Del 9% de las muestras restantes no se identificó ningún organismo relacionado al daño.</p>
The Annonaceae fruits weevil (Optatus palmaris) causes high losses to the soursop production in Mexico. Damage occurs when larvae and adults feed on the fruits; however, there is limited research about control strategies against this pest. However, pheromones provide a high potential management scheme for this curculio. Thus, this research characterized the behavior and volatile production of O. palmaris in response to their feeding habits. Olfactometry assays established preference by weevils to volatiles produced by feeding males and soursop. The behavior observed suggests the presence of an aggregation pheromone and a kairomone. Subsequently, insect volatiles sampled by solid-phase microextraction and dynamic headspace detected a unique compound on feeding males increased especially when feeding. Feeding-starvation experiments showed an averaged fifteen-fold increase in the concentration of a monoterpenoid on males feeding on soursop, and a decrease of the release of this compound males stop feeding. GC-MS analysis of volatiles identified this compound as α-terpineol. Further olfactometry assays using α-terpineol and soursop, demonstrated that this combination is double attractive to Annonaceae weevils than only soursop volatiles. The results showed a complementation effect between α-terpineol and soursop volatiles. Thus, α-terpineol is the aggregation pheromone of O. palmaris, and its concentration is enhanced by host-plant volatiles.
El manzano es uno de los principales frutales de importancia económica para México. Se ve afectado por diferentes plagas, una de ellas el caracol común de jardín (Helix aspersa), que se alimenta de hojas y fruta en desarrollo en la localidad de Mesa Miñaca, Guerrero, Chihuahua, desde 2013. A la fecha se desconocen las causas que han favorecido la presencia y dispersión de la plaga en esa localidad.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.