EurekaMag.com logo
+ Site Statistics
References:
53,214,146
Abstracts:
29,074,682
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Experimental studies on acarine predator-prey interactions: the effects of predator density on prey consumption, predator searching efficiency, and the functional response to prey density



Experimental studies on acarine predator-prey interactions: the effects of predator density on prey consumption, predator searching efficiency, and the functional response to prey density



Canadian Journal of Zoology, 604: 611-629



Experiments on the responses of 2 spp. of predacious phytoseiid mites, Phytoseiulus persimilis and Ambylseius degenerans, to their own density revealed that, with the exception of adult female P. persimilis, the individual predation rates of all instars of both species increased as predator and prey densities were increased within certain fixed predator to prey ratios. Interference between adult female P. persimilis was suggested as a possible reason for this result, and this was confirmed by the application of Hassell and Varley's model to data from an experiment where predator density was increased within various prey densities. Interference did not influence the predation rates for other instars of either species and other factors are considered to account for the results obtained. Increasing predator density caused the functional response of all instars of both species to increase over an increasingly wider range of prey densities. Due to interference between adult female P. persimilis the functional response curves increased curvilinearly and reached plateaus at progressively lower levels of prey killed per predator as predator density increased. With the other instars of both species the responses became less curvilinear with increasing predator density, and trends in the data suggested that plateaus would be reached at similar levels of prey killed for different predator densities provided sufficient prey are present.

(PDF 0-2 workdays service: $29.90)

Accession: 021011119

Download citation: RISBibTeXText



Related references

Experimental studies on acarine predator prey interactions the effects of predator density on immature survival adult fecundity and emigration rates and the numerical response to prey density acarina phytoseiidae. Canadian Journal of Zoology 60(4): 630-638, 1982

Experimental studies on acarine predator-prey interactions: effects of predator age and feeding history on prey consumption and the functional response (Acarina: Phytoseiidae). Canadian Journal of Zoology, 597: 1387-1406, 1981

Experimental studies on acarine predator-prey interactions interference and searching efficiency (Acarina: Phytoseiidae). Acta Ecologica Sinica, 111: 60-65, 1991

Experimental studies on acarine predator-prey interactions: the response of predators to prey distribution in an homogeneous area (Acarina: Phytoseiidae). Canadian Journal of Zoology 60(4): 639-647, 1982

Experimental studies on acarine predator prey interactions the response of predators to prey distribution in a homogeneous area acarina phytoseiidae. Canadian Journal of Zoology 60(4): 639-647, 1982

Predator behaviour and prey density: Evaluating density-dependent intraspecific interactions on predator functional responses. Journal of Animal Ecology 70(1): 14-19, 2001

The effects of predator functional response and prey productivity on predator prey stability a graphical approach. Ecology (Washington D C) 57(3): 609-612, 1976

Predator prey interactions Predator choice for prey group size and composition in Crenicichla alta, a natural predator of the Trinidadian guppy, Poecilia reticulata. Journal of Fish Biology 63(Supplement A): 247, December, 2003

Behavioral Hypervolumes of Predator Groups and Predator-Predator Interactions Shape Prey Survival Rates and Selection on Prey Behavior. American Naturalist 189(3): 254-266, 2017

Experimental studies on acarine predator prey interactions distribution of search effort and predation rates of a predator population in a patchy environment acarina phytoseiidae. Canadian Journal of Zoology 60(12): 3001-3009, 1982

Consumption rates in predator populations Interactions between predator and prey aggregation patterns and type of density-dependent consumption function. Bulletin of the Ecological Society of America 78(4 SUPPL ): 67, 1997

A model of predator-prey interaction in case of predator inactivity eg encystement under a critical level of prey density. Bollettino di Zoologia 45.2: 220-221, 1978

Experimental studies on acarine predator-prey interactions: effects of temporal changes in the environment on searching behaviour, predation rates, and fecundity (Acarina: Phytoseiidae). Canadian Journal of Zoology, 6012: 2992-3000, 1982

Experimental studies on acarine predator prey interactions effects of temporal changes in the environment on searching behavior predation rates and fecundity acarina phytoseiidae. Canadian Journal of Zoology 60(12): 2992-3000, 1982

Effect of predator density dependent dispersal of prey on stability of a predator-prey system. Mathematical Biosciences 206(2): 343-356, 2006