PREFERENCE-PERFORMANCE RELATIONSHIPS AND EFFECTS OF HOST PLANT CHOICE IN...

Ecological Monographs;  November 1, 1999 ;   Poore, Alistair G. B. Steinberg, Peter D.;   787 words ......factors other than those intrinsic to the host plant are important in determining host range...factors such as predation, in determining host plant choice in insects has been the subject...specialized than insects to particular host plant taxa (Hay and Steinberg 1992), many species...

Non-host volatiles do not affect host acceptance by alate virginoparae of...

European Journal of Entomology;  January 1, 2005 ;   Olivares-Donoso, Ruby; Niemeyer, Hermann M;   787 words ......it was shown that volatiles of a non-host plant (alfalfa, Medicago sativa L.) did not...Rhopalosiphum padi L., once it was settled on a host plant (wheat, Triticum aestivum L.). INTRODUCTION Host plant selection by aphids consists of a sequence...

Spatial variation in abundance created by stochastic temporal variation.

Ecology;  September 1, 1997 ;   Ives, Anthony R. Klopfer, Eric D.;   787 words ...INTRODUCTION Spatial variation in the abundance of a species is often attributed to spatial variation in the environmental factors that...et al. 1994, Molofsky 1994). Thus, spatial variation in the abundance of species can be...

Diversity of Parasitic Cuscuta and their Host Plant Species in a...

Bulletin (Southern California Academy of Sciences);  April 1, 2001 ;   Lei, Simon A.;   787 words ......dodder (Cuscuta spp.) on a variety of host plant species was quantitatively investigated...their parasitic nature on a variety of host plant species, different Cuscuta species demonstrate...dumosa) (Beauchamp 1986). Two common host plant species of Cuscuta denticulata are creosote...

Tachinid parasitoids affect host plant choice by caterpillars to increase...

Ecology;  March 1, 1997 ;   Karban, Richard English-Loeb, Gregory;   787 words ......ask whether caterpillars alter their host plant choice after they have been parasitized...spring and summer. METHODS Parasitism and host plant choice Since caterpillar survival depended on host plant used (English-Loeb et al. 1993), we conducted...

Oviposition site choice in Harris' checkerspot, Charidryas harrisii...

Northeastern Naturalist;  January 1, 2001 ;   Robakiewicz, Phil; Robbins, Justin E;   787 words ......determine which characteristics of its host plant, flat-topped white aster (Aster umbellatus...suggests management possibilities for the host plant population of this butterfly species...groups until they have defoliated their host plant, at which time they move on to a nearby...

Spatial variation in abundance.

Ecology;  October 1, 1995 ;   Brown, James H. Mehlman, David W. Stevens, George C.;   787 words ......distribution; niche; population dynamics; spatial variation. Editor's Note Does the spatial distribution...to the patterns and processes of spatial variation in abundance within a species. Ecologists...magnitude and pattern of intraspecific spatial variation in local population ...

Modeling spatial variation in leukemia survival data.

Journal of the American Statistical Association;  December 1, 2002 ;   Henderson, Robin Shimakura, Silvia Gorst, David;   787 words ......discuss the detection and modeling of spatial variation in disease incidence, for which there...goal is to model possible residual spatial variation in survival after accounting for...standard survival analysis ignoring any spatial variation across the region. Data consist of...

How quality of host plant affects a predator-prey interaction in...

Ecology;  June 1, 1995 ;   Walde, Sandra J.;   787 words ......other predators, other prey, and the host plant have been considered part of a non-interactive...Letourneau 1988). The potential impact of the host plant on predator-prey interactions has also...general way in which the quality of the host plant may determine the effectiveness of ...

Predicting spatial patterns of house prices using LPR [local percentile...

Real Estate Economics;  December 22, 2002 ;   Clapp, John M. Kim, Hyon-Jung Gelfand, Alan E.;   787 words ......hedonic price equations to deal with spatial variation in house prices. Spatial patterns...deal with all of these sources of spatial variation. We propose to accommodate these...sufficient flexibility to find substantial spatial variation in house values. The parameters of...

Identifying spatial variation patterns in multivariate manufacturing...

Technometrics;  August 1, 2003 ;   Apley, Daniel W. Lee, Ho Young;   787 words ......variation source causes a distinct spatial variation pattern in the measurement data...separation can be used to identify spatial variation patterns in manufacturing data. We...variation source may result in a distinct spatial variation pattern across any or all of the...

Transcriptional responses in the hemiparasitic plant Triphysaria...

Plant Physiology;  September 1, 2001 ;   Matvienko, Marta; Torres, Manuel J; Yoder, John I;   787 words ......Hemiparasitic Plant Triphysaria versicolor to Host Plant Signals1[w] Parasitic plants in the Scrophulariaceae use chemicals released by host plant roots to signal developmental processes...roots through which the parasite robs host plant resources (Riopel and Timko, 1995). ...

Host-plant specialisation and habitat restriction in an endangered insect,...

European Journal of Entomology;  January 1, 2004 ;   Martin, Lynn A; Pullin, Andrew S;   787 words ......2004) showed that the specialisation in host plant use and restriction in habitat use of...specialisation. The success of an insect on its host-plant within a particular habitat depends on...will act simultaneously to influence host plant choice. Martin & Pullin (2004) have...

Influence of host plant on susceptibility of the aphid Acyrthosiphon pisum...

European Journal of Entomology;  January 1, 2007 ;   Tkaczuk, Cezary; Shah, Paresh A; Clark, Suzanne J; Pell, Judith K;   787 words ......Acyrthosiphon pisum, Pandora neoaphidis, host plant, tritrophic interactions, natural enemies...aphid, Acyrthosiphon pisum, on different host plant species. Dose-response bioassays were...physiological stress related to a change in host plant. INTRODUCTION Studies of tritrophic ...

An investigation of spatial variation in soil erosion, soil properties,...

Journal of Soil and Water Conservation;  January 1, 2002 ;   Quine, T.A. Zhang, Y.;   787 words ......the existence and the importance of spatial variation in soil properties and crop production...sought to overcome the former through spatial variation in the latter. This approach assumes...terrain attributes in the prediction of spatial variation in the properties of surface soil...