Individual-based model of yellow perch and walleye populations in Oneida...

Ecological Monographs;  May 1, 1999 ;     700+ words ......responses of predators and the effects of alternative prey. Most of the models used to determine...different functional response curves and alternative prey could stabilize prey dynamics in two...performed to examine the effects of alternative prey for walleye on prey and predator ...

Predation on artificial nests in relation to the numbers of small mammals...

Folia Zoologica;  January 1, 2004 ;     700+ words ...Abstract. The alternative prey hypothesis suggests that generalist...area. The results support the alternative prey hypothesis and suggest that...dominant predators. Key words: alternative prey hypothesis, fragmented landscape...

Patterns of predation on noncyclic lemmings.

Ecological Monographs;  February 1, 1997 ;     700+ words ......specialist predators, which have few or no alternative prey when rodents become scarce (Andersson...specialists. Generalist predators and their alternative prey also decline, probably because the alternative prey only partially compensate for declining...

The quality of aphids as food for generalist predators: implications for...

European Journal of Entomology;  January 1, 2005 ;     700+ words ......aphidiphages, true generalist predators, alternative prey, Araneae, Opiliones, Coleoptera, Hymenoptera...aphids are low-quality food compared to alternative prey types (in most studies fruit flies...that predator populations rely on alternative prey (e.g. Collembola and Diptera) ...

Effects of larval diet on female reproductive output of the European...

European Journal of Entomology;  July 1, 2008 ;     700+ words ......development and adult reproduction, whereas alternative prey merely maintains survival until essential...diet containing both essential and alternative prey (Evans et al., 1999; Soares et al...time (Dixon, 2000). The acceptance of alternative prey by aphidophagous coccinellids ...

Introducing barley as aphid reservoir in sweet-pepper greenhouses: Effects...

European Journal of Entomology;  July 1, 2008 ;     700+ words ......control, that includes strategies such as the provision of alternative prey for natural enemies. One example is the "banker plants...optimal performance (Landis et al., 2000). Provision of alternative prey is one form of habitat management. The use of "open-rearing...

The effects of six species of aphids on some life history parameters of...

European Journal of Entomology;  January 1, 2005 ;     700+ words ...Key words. Coccinellidae, essential prey, alternative prey, larval development, larval mortality, fecundity...food. Certain species of aphids serve only as an alternative prey that do not enable development, and some may even...

Managing tropical rice pests through conservation of generalists natural...

Ecology;  October 1, 1996 ;     700+ words ...INTRODUCTION Most biological control programs focus on promoting one or two premier natural enemies as agents for the suppression of particular pests. In contrast, we argue that consistently high levels of natural biological control may often result from a complex set of community-level

Effects of basal resources, predation, and alternative prey in microcosm...

Ecology;  June 1, 1995 ;     700+ words ...INTRODUCTION Ecologists have debated whether the abundance of organisms within a particular trophic level is more likely to be controlled by predation or by the availability of resources (reviews: Hunter and Price 1992, Menge 1992, Power 1992, Strong 1992, Hairston and Hairston 1993). Although

Multitrophic interactions among plants, aphids, alternate prey and shared...

European Journal of Entomology;  July 1, 2008 ;     700+ words ...Key words. Alternative prey, apparent competition, food webs, functional response, indirect interactions, mutualism, numerical response, parasitism, predation...

Seasonal differences in predator-prey behavior in experimental streams

The American Midland Naturalist;  October 1, 2003 ;     700+ words ......interaction occurs potentially mediates prey responses to predators. Here, I determined whether season, predator presence or alternative prey availability affected prey patch use when faced with a sit-and-wait predator from streams in southern Maine. In addition...

Shell strength of mud snails (Ilyanassa obsoleta) may deter foraging by...

The American Midland Naturalist;  July 1, 1997 ;     700+ words ......to crushing) may deter predation by terrapins despite the low search costs and equivalent energetic returns relative to alternative prey items. INTRODUCTION Diamondback terrapins (Malaclemys terrapin) consume a variety of small shellfish, crustaceans and fish...

Weasel population response, home range and predation on rodents in a...

Ecology;  January 1, 1995 ;     700+ words ......the crash. This hypothesis assumes that small mustelids, as rodent specialists, can only make a small dietary shift to alternative prey, and the changes in their density lag behind those in voles. Korpimaki et al. (1991) tested this hypothesis by studying...

Proximate causes of cannibalistic polyphenism in larval tiger salamanders.

Ecology;  April 1, 1999 ;     700+ words ......are generally clear (Crump 1992). In particular, cannibalistic polyphenisms are thought to evolve in response to limited alternative prey availability and to situations where rapid development and large size induced by cannibalism are advantageous (Crump 1992...

Diet and insectivory in the "araneophagic" spider, mimetus notius...

The American Midland Naturalist;  October 1, 2001 ;     700+ words ......depends not only on the parameters associated with the current prey item, but also on the parameters associated with the alternative prey available. The optimal prey set is thus a function of all of the available prey, rather than any one prey type. Similarly...