ISSN:
1570-7458
Keywords:
Coccinellids
;
Hyperaspis notata
;
life table statistics
;
insect development
;
intrinsic rates of increase
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The coccinellid Hyperaspis notata Mulsant was introduced into Africa for the biological control of the cassava mealybug, Phenacoccus manihoti Matile-Ferrero. Two cohorts of strains, one originating from Southern Brazil and Paraguay feeding on P. manihoti, and one from Colombia feeding on Phenacoccus herreni Cox & Williams were studied at different temperatures between 15 and 34 °C and age-specific life tables were constructed. Although in the areas of origin the climatical conditions and the food sources are different, the survivorship and developmental times at the same temperature differed little among the two strains, the Colombian strain being slightly more tolerant to high temperatures. Jacknife estimates of the intrinsic rates of increase (rm) peaked very close to 30 °C for the two strains.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1003026314120
