Temperature-dependent growth rates for the cassava mealybug, Phenacoccus herreni, and two of its encyrtid parasitoids, Epidinocarsis diversicornis and Acerophagus coccois in Colombia

By:

HERRERA, C.J

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Material type: Article

ArticleLanguage: English Description: 50:21-27Subject(s): LOC classification:

35874

In: Entomología Experimentalis et Applicata (Netherlands)Summary: Se determinaron las tasas de desarrollo de Phenacoccus herreni a 18, 20, 22, 25, 30 y 35 grados centigrados para los estadios de huevo, macho joven y hembra joven. La longevidad se determino en hembras y machos adultos. Se determinaron las tasas de desarrollo del parasitoide de P. herreni, Epidinocarsis diversicornis, a 18, 20, 25 y 30 grados centigrados para los periodos comprendidos entre la oviposicion y la formacion de momias y entre la formacion de momias y la emergencia de adultos. Se determinaron las tasas de desarrollo del parasitoide de P. herreni, Acerophagus coccois, para los mismos estadios de vida a 20, 25 y 30 grados centigrados. Se ajustaron las ecuaciones de polinomios derivados del cuadrado min. o las ecuaciones logisticas a cada conjunto de datos (excepto para A. coccois) de manera que las tasas se pudieron interpolar para las temp. entre los puntos observados, para uso en un analisis del impacto de estos parasitoides en la dinamica de poblacion de P. herreni. Los resultados de este analisis se presentan por separado. (RA-CIAT)Summary: Developmental rates for Phenacoccus herreni were determined at 18, 20, 22, 25, 30, and 35 degrees Celsius for the egg, all juvenile male, and all juvenile female stadia. Longevity was determined in adult females and males. Developmental rates of the P. herreni parasitoid Epidinocarsis diversicornis were determined at 18, 20, 25, and 30 degrees Celsius for the oviposition-to-mummy formation period and for the mummy formation-to-adult emergence period. Developmental rates of the P. herreni parasitoid Acerophagus coccois were determined for the same 2 life stages at 20, 25, and 30 degrees Celsius. Least-squares-derived polynomial equations or logistic equations were fitted to each data set (except for A. coccois) so that rates could be interpolated for temp. between observed points, for use in an analysis of the impact of these parasitoids on the population dynamics of P. herreni. Results of this analysis are presented separately. (AS)

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Item type	Current library	Collection	Call number	Copy number	Status	Date due	Barcode	Item holds
Journal Article	CIAT Library Document collection CINFOS	Document Collection CINFOS	35874 (Browse shelf(Opens below))	c.1	Short Loan		100100440

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Se determinaron las tasas de desarrollo de Phenacoccus herreni a 18, 20, 22, 25, 30 y 35 grados centigrados para los estadios de huevo, macho joven y hembra joven. La longevidad se determino en hembras y machos adultos. Se determinaron las tasas de desarrollo del parasitoide de P. herreni, Epidinocarsis diversicornis, a 18, 20, 25 y 30 grados centigrados para los periodos comprendidos entre la oviposicion y la formacion de momias y entre la formacion de momias y la emergencia de adultos. Se determinaron las tasas de desarrollo del parasitoide de P. herreni, Acerophagus coccois, para los mismos estadios de vida a 20, 25 y 30 grados centigrados. Se ajustaron las ecuaciones de polinomios derivados del cuadrado min. o las ecuaciones logisticas a cada conjunto de datos (excepto para A. coccois) de manera que las tasas se pudieron interpolar para las temp. entre los puntos observados, para uso en un analisis del impacto de estos parasitoides en la dinamica de poblacion de P. herreni. Los resultados de este analisis se presentan por separado. (RA-CIAT)

Developmental rates for Phenacoccus herreni were determined at 18, 20, 22, 25, 30, and 35 degrees Celsius for the egg, all juvenile male, and all juvenile female stadia. Longevity was determined in adult females and males. Developmental rates of the P. herreni parasitoid Epidinocarsis diversicornis were determined at 18, 20, 25, and 30 degrees Celsius for the oviposition-to-mummy formation period and for the mummy formation-to-adult emergence period. Developmental rates of the P. herreni parasitoid Acerophagus coccois were determined for the same 2 life stages at 20, 25, and 30 degrees Celsius. Least-squares-derived polynomial equations or logistic equations were fitted to each data set (except for A. coccois) so that rates could be interpolated for temp. between observed points, for use in an analysis of the impact of these parasitoids on the population dynamics of P. herreni. Results of this analysis are presented separately. (AS)