Fluctuacion y distribucion de las poblaciones de Oligota minuta Cam. (Coleoptera: Staphilinidae) predator de Mononychellus tanajoa Bondar (Acarina: Tetranychidae)

By:

GUERRERO, J.M

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Material type: Text

TextLanguage: Spanish Publication details: Palmira, Valle del Cauca, CO Centro Internacional de Agricultura Tropical (CIAT) 1979Description: 9 pSubject(s): LOC classification:

15758

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Summary: Oligota minuta se ha observado como el predator de mayor dominancia de Mononychellus tanajoa, consumiendo sus huevos y estados activos. En el Centro Internacional de Agricultura Tropical, Palmira, Colombia, se efectuaron conteos de las poblaciones de adultos de Oligota 4 veces/dia (6 am, 9 am, 1 pm y 4 pm) en la var. de yuca M Col 113 para estudiar la distribucion de este insecto en la planta y la fluctuacion de sus poblaciones durante el dia. Las poblaciones de Oligota no variaron significativamente durante el dia, con rangos en las diferentes horas muestreadas de 10.7-11.3 adultos/48 hojas. Entre las primeras 14 hojas de arriba hacia abajo de la planta que fueron muestreadas, las mayores poblaciones se encontraron entre la quinta y octava hojas, con rangos de 16-20 adultos/48 hojas. En la variedad M Col 22 las poblaciones de Oligota se observaron durante todos los 7 meses de muestreo y sus mayores densidades coincidieron con las epocas de mayor abundancia de Mononychellus. (RA-CIAT)Summary: Oligota minuta is one of the major dominant predators of Mononychellus tanajoa, consuming eggs and movil stages of the mite. At the Centro Internacional de Agricultura Tropical, Palmira, Colombia, Oligota adult populations on cassava var. M Col 113 were counted 4 times/day (6 am, 9 am, 1 pm, and 4 pm) to study the distribution of this insect on the plant and the population fluctuation during the day. Oligota populations did not differ significantly during the day, ranging from 10.7-11.3 adults/48 leaves for the different hours sampled. Among the 1st 14 leaves starting at the top of the plant that were sampled the highest Oligota populations were found between the 8th leaf with a range of 16-20 adults/48 leaves. In var. M Col 22 Oligota populations were observed during all 7 mo. of the sampling and its highest densities coincided with the time of highest no. of Mononychellus. (AS)

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Holdings
Item type	Current library	Collection	Call number	Status	Date due	Barcode	Item holds
Online Document	CIAT Library Web	Electronic Document	15758 (Browse shelf(Opens below))	Not For Loan (Restricted Access)
Books	CIAT Library CIAT Publications	CIAT Publications	15758 (Browse shelf(Opens below))	Available

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Oligota minuta se ha observado como el predator de mayor dominancia de Mononychellus tanajoa, consumiendo sus huevos y estados activos. En el Centro Internacional de Agricultura Tropical, Palmira, Colombia, se efectuaron conteos de las poblaciones de adultos de Oligota 4 veces/dia (6 am, 9 am, 1 pm y 4 pm) en la var. de yuca M Col 113 para estudiar la distribucion de este insecto en la planta y la fluctuacion de sus poblaciones durante el dia. Las poblaciones de Oligota no variaron significativamente durante el dia, con rangos en las diferentes horas muestreadas de 10.7-11.3 adultos/48 hojas. Entre las primeras 14 hojas de arriba hacia abajo de la planta que fueron muestreadas, las mayores poblaciones se encontraron entre la quinta y octava hojas, con rangos de 16-20 adultos/48 hojas. En la variedad M Col 22 las poblaciones de Oligota se observaron durante todos los 7 meses de muestreo y sus mayores densidades coincidieron con las epocas de mayor abundancia de Mononychellus. (RA-CIAT)

Oligota minuta is one of the major dominant predators of Mononychellus tanajoa, consuming eggs and movil stages of the mite. At the Centro Internacional de Agricultura Tropical, Palmira, Colombia, Oligota adult populations on cassava var. M Col 113 were counted 4 times/day (6 am, 9 am, 1 pm, and 4 pm) to study the distribution of this insect on the plant and the population fluctuation during the day. Oligota populations did not differ significantly during the day, ranging from 10.7-11.3 adults/48 leaves for the different hours sampled. Among the 1st 14 leaves starting at the top of the plant that were sampled the highest Oligota populations were found between the 8th leaf with a range of 16-20 adults/48 leaves. In var. M Col 22 Oligota populations were observed during all 7 mo. of the sampling and its highest densities coincided with the time of highest no. of Mononychellus. (AS)