Functional and Numerical Responses of Cheilomenes lunata (Fabricius) (Coleoptera: Coccinellidae) Feeding on the Cowpea Aphid, Aphis craccivora Koch (Homoptera: Aphididae)

Autor:	A. E. Akingbohungbe, T. I. Ofuya
Rok vydání:	1988
Předmět:	Aphid biology Homoptera Cheilomenes lunata Aphididae biology.organism_classification Fecundity Predation Toxicology Agronomy Insect Science Coccinellidae Aphis craccivora Ecology Evolution Behavior and Systematics
Zdroj:	International Journal of Tropical Insect Science. 9:543-546
ISSN:	1742-7592 1742-7584
DOI:	10.1017/s1742758400011127
Popis:	The density responsiveness of larvae and adults of Cheilomenes lunata (Fabricius) preying on Aphis craccivora Koch was investigated under laboratory conditions where temperature and relative humidity were uncontrolled and fluctuated between 24-30°C and 43-90% respectively. The feeding rates of C. lunata were positively correlated with the population density of prey. The number of prey consumed daily by each predator stage tested, increased more steeply at lower, than at higher prey densities, exhibiting thus the Type II functional response. Fecundity of C. lunata females also increased to a plateau with increasing prey density.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee6d511e29af263a0de8a23e542e2cf9 https://doi.org/10.1017/s1742758400011127 Zobrazit plný text záznamu Full text from SpringerLink