Academic Journals Database
Disseminating quality controlled scientific knowledge

SPATIAL DISTRIBUTION PATTERN OF THE FRUIT FLY, Bactrocera dorsalis COMPLEX (DIPTERA: TEPHRITIDAE) IN MANGO ORCHARD

ADD TO MY LIST
 
Author(s): A. Soemargono | Muryati | Ahsol Hasyim | Mizu Istianto

Journal: Agrivita : Journal of Agricultural Science
ISSN 0126-0537

Volume: 33;
Issue: 3;
Start page: 207;
Date: 2011;
Original page

Keywords: Bactrocera dorsalis complex | spatial | distribution | trapping | mango

ABSTRACT
The spatial distribution of Bactrocera dorsalis complex in the mango orchard that was analyzed using various mathematical indices dispersion and regression models showed an aggregated distribution. Taylor’s power law and Iwao’s regression model fitted well to all data sets. However, Iwao’s regression model fitted the data better, yielding higher values of R2 than Taylor’s power law. As the regression of the reciprocal of k of negative binomial (1/k) on [k = ( 2 – s2/n) / (s2 – )] was not significant, the calculation of a common k was justified to be 1.30. This implies that the grade of aggregation of the fruit flies population was relatively constant throughout the time despite the variation in sample means. Since the clump size (λ) value was more than 2, the aggregated distribution might be due to the behavior and environmental factors working together.

Tango Jona
Tangokurs Rapperswil-Jona

    
RPA Switzerland

Robotic Process Automation Switzerland