Utilización de Ryania speciosa var chocoensis (Triana y Planch) para el control de Toxoptera citricidus (Kirkaldy, 1907) (Hemiptera: Aphididae) en condiciones de laboratorio
Article Sidebar
Main Article Content
Abstract
The biocide ability from stems and leaves extracts of Ryanae speciosa var. Chocoensis (Triana y Planch) for controlling Toxoptera citricidus Kirkaldy was evaluated in laboratory conditions. LC50 was determined by exposing individuals to concentrations of 0.20, 0.70, 1.20; 1.70 and 2.00 g/100 mL of stems extracts with 70% ethanol, and 0.50, 1.20, 1.80, 2.40 and 2.95 g/100 mL of leaves extracts with 75% ethanol for 36 hours, using in both bioassays properly coded petri dishes with 30 aphids each. Lethal effectiveness was measured by the absence of mobility response to the abdomen stimulation punctures carried out twice for 15 seconds consecutively. Control treatment was 1% ethanol. There was no sex discrimination. The determination of the LC50 of 236 and 68 mg/L for extracts obtained from stems and leaves, respectively, showed the greatest degree of toxicity at 36 hrs. Leaves extract showed a highest speed of action. Symptoms on aphids was the lack of movements coordination within two hrs of exposure to the extracts, reduction of their movements within 12 hrs, abortion of nymphs at 18 hrs and total absence of movement between 24 and 36 hrs.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Those authors who have publications with this journal accept the following terms of the License Attribution-NonCommercial 4.0 International (CC BY-NC 4.0):
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
The journal is not responsible for the opinions and concepts expressed in the works, they are the sole responsibility of the authors. The Editor, with the assistance of the Editorial Committee, reserves the right to suggest or request advisable or necessary modifications. They are accepted to publish original scientific papers, research results of interest that have not been published or sent to another journal for the same purpose.
The mention of trademarks of equipment, instruments or specific materials is for identification purposes, and there is no promotional commitment in relation to them, neither by the authors nor by the publisher.
How to Cite
References
Alonso, O.: «Los insecticidas botánicos: una opción ecológica para el control de plagas», Pastos y Forrajes 22 (1): 3-13, Matanzas, Cuba, 1999.
Anaya, A. L.; G. F. J. Espinosa; O. R. Cruz: Relaciones químicas entre organismos: Aspectos básicos y perspectivas de su aplicación, Instituto de Ecología, UNAM, Edit. Plaza y Janés, México, 2001.
Anónimo: «La cadena de cítricos en Colombia: Una mirada global de su estructura y dinámica 1991-2005», Ministerio de Agricultura y Desarrollo Rural, www.agrocadenas.gov.co/citricos/documentos/caracterizacion_citricos.pdf (consultado en noviembre de 2007).
Anónimo: «Descubrimiento de un nuevo mecanismo de acción insecticida: Un capítulo aparte», s/a. www.research.bayer.es/edicion-19/19_Fitosanidad.pdfx (consultado en septiembre de 2008).
Azcon-Bieto, J.; M. Talón: Fundamentos de Fisiología Vegetal, Mc Graw Hill, España, 2000, pp. 133-263.
Bobadilla, M.; Fátima Zabala; M. Sisnegas; Gina Zabaleta; J. Mostacero; L. Taramona: «Evaluación larvicida de las suspensiones acuosas de guanábana Annona muricata Linnaeus sobre Aedes aegypti Linnaeus (Diptera: Culicidae)», Revista Peruana de Biología 12 (1): 145-152, 2005, http://www.scielo.org.pe/pdf/rpb/v12n1/v12n1a14.pdf (consultado en septiembre de 2008).
Díaz, M.; G. Bulus; Y. Pica: «Métodos estadísticos para el análisis de resultados de toxicidad», Ensayos toxicológicos y métodos de evaluación de calidad de aguas. Estandarización, intercalibración, resultados y aplicaciones, México, IMTA, 2004. http://web.idrc.ca/es/ev-84468-201-1-DO_TOPIC.html (consultado en septiembre de 2008).
Mejia, M.; M. Rodríguez; J. Güemez: «Determinación de la concentración letal media (CL50) y efecto histopatoló gico del permanganato de potasio, en renacuajos de rana toro Rana catesbeiana (Anura: Ranidae)», Universidad y Ciencia 17 (34): 65-72. 2001, http://redalyc.uaemex.mx/pdf/154/15403402.pdf (consultado en septiembre de 2008).
Trochez, A.: «Reconocimiento de áfidos asociados a los cítricos e incidencia del virus de la tristeza de los cítricos en algunas regiones de Colombia», Revista Regional Novedades Técnicas no. 2, Colombia, 2002.