The role of parasitism in the population dynamics of the bark beetlePhloeotribus scarabaeoides(Col., Scolytidae) on European olives (Olea europaea)

Autor:	N. A. C. Kidd, C. Lozano, M. Campos, M.A. Jervis
Rok vydání:	1996
Předmět:	education.field_of_study Bark beetle biology Ecology media_common.quotation_subject Population Parasitism biology.organism_classification Competition (biology) Intraspecific competition Parasitoid Spatial heterogeneity Population model Insect Science education Agronomy and Crop Science media_common
Zdroj:	Journal of Applied Entomology. 120:347-351
ISSN:	1439-0418 0931-2048
Popis:	Mortality from parasitism and intraspecific larval competition was measured on a spatial scale for the olive bark beetle, Phloeotribus scarabaeoides, in cut logs within a Spanish olive orchard. Mortality due to parasitism was inversely density-dependent, whilst that due to competition was directly density-dependent. The consequences of these mortality effects of parasitoid and host population dynamics were investigated using a simple population model. In the absence of parasitism, the beetle population stabilized at around three reproducing females per 10 cm2 of olive log surface. Using Roger's random parasite equation to model the parasitoid-host interaction, the effects of parasitism were to destabilize an otherwise stable interaction. The limitations of the model in its current from are discussed in detail. Suggestions are also made for future improvements to the model including the incorporation of spatial heterogeneity in parasitism.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::90217588e5f588cd5d68d1c08bb9decc https://doi.org/10.1111/j.1439-0418.1996.tb01617.x Zobrazit plný text záznamu Plný text