The role of natural enemies in controllingIcerya purchasi in South Australia

Autor:	Yugal K. Prasad
Rok vydání:	1989
Předmět:	biology Ecology Homoptera Plant Science biology.organism_classification Population density Margarodidae Predation Icerya Animal ecology Insect Science PEST analysis General Agricultural and Biological Sciences Agronomy and Crop Science Ecology Evolution Behavior and Systematics Icerya purchasi
Zdroj:	Entomophaga. 34:391-395
ISSN:	1573-8248 0013-8959
Popis:	The obscure occurrence of the cottony-cushion scaleIcerya purchasi Maskell in its native country Australia is generally attributed to its natural enemies. Twelve natural-enemy-exclusion experiments were conducted at monthly intervals to confirm the role of natural enemies. Each experiment had uncaged, open-caged, and caged treatments. The natural enemies were active throughout the year. The percentage of scales surviving to adults in the cages was significantly higher than in the open-caged treatments, except the April (first) cohort. In both open-caged and uncaged treatments, the percentage of scales surviving to adults was similar and matched the changes in the numbers of natural enemies, thus confirming their importance in controllingI. purchasi in South Australia.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::731ceeae82d30e09a5fbe641029738f5 https://doi.org/10.1007/bf02372478 Zobrazit plný text záznamu Full text from SpringerLink