Effects of Host Plant Patch Size on Herbivore Density: Patterns

Ecology ◽  
1988 ◽  
Vol 69 (4) ◽  
pp. 1090-1102 ◽  
Author(s):  
Catherine E. Bach
Keyword(s):  
Host Plant ◽  
Patch Size ◽  
Herbivore Density

scholarly journals Impact of Host Plant Connectivity, Crop Border and Patch Size on Adult Colorado Potato Beetle Retention

PLoS ONE ◽  
2014 ◽  
Vol 9 (5) ◽  
pp. e95717 ◽  
Author(s):  
Gilles Boiteau ◽  
Charles Vincent ◽  
Tracy C. Leskey ◽  
Bruce G. Colpitts ◽  
Pamela MacKinley ◽  
...  
Keyword(s):  
Host Plant ◽  
Colorado Potato Beetle ◽  
Patch Size ◽  
Potato Beetle

scholarly journals Effect of patch size of the exotic host plant Calotropis procera (Apocynaceae) on herbivory

2020 ◽  
Vol 64 (3) ◽  
Author(s):  
Geraldo Wilson Fernandes ◽  
Maria Fernanda Vicente Rodrigues-Menelau ◽  
Jarcilene Silva de Almeida ◽  
Samuel Novais
Keyword(s):  
Host Plant ◽  
Patch Size ◽  
Calotropis Procera ◽  
Exotic Host

scholarly journals The tritrophic system hyptis suaveolens (Lamiaceae) - agromyzid leafminers (Diptera: Agromyzidae) - parasitoids (Hymenoptera): effects of herbivore density, host plant patch size, and habitat complexity on parasitism rate

2009 ◽  
Vol 52 (3) ◽  
pp. 573-580 ◽  
Author(s):  
Jarbas Marcal de Queiroz ◽  
Maria Alice Garcia
Keyword(s):  
Host Plant ◽  
Habitat Complexity ◽  
Patch Size ◽  
Host Density ◽  
Habitat Diversity ◽  
Parasitism Rate ◽  
Tritrophic System ◽  
Hyptis Suaveolens ◽  
Plant Densities ◽  
Managed Ecosystems

In this study a tritrophic system was evaluated to measure the contributions of the insect host density and its host plant concentration in simple and diversified habitat on the rate of parasitism. The system was composed of the plant Hyptis suaveolens, two species of agromyzid leafminers, and three morphospecies of parasitoids. The parasitism rate, patch size, and habitat complexity were found to be interdependent. If only the habitat complexity or patch size was take into account the differences in parasitism rate are not significant, although habitat diversity seemed to contribute more than the host plant concentration to increase the parasitism rate. The leaves or plants with different number of mines were equally attacked by the parasitoids. The results were representative of what happened to the leafminers at different host plant densities under the homogeneous and heterogeneous habitat condition. This work could help to reinforce the idea of the importance of the plant diversity for enhancing the biological control of the pests by the parasitoids in the managed ecosystems.

Interpatch dispersal of the cabbage butterfly

1987 ◽  
Vol 65 (3) ◽  
pp. 616-622 ◽  
Author(s):  
L. Fahrig ◽  
J. E. Paloheimo
Keyword(s):  
Host Plant ◽  
Patch Size ◽  
Pieris Rapae ◽  
Field Studies ◽  
Population Abundance ◽  
Dispersal Rate ◽  
Dispersal Behaviour ◽  
Cabbage Butterfly ◽  
Host Detection ◽  
Egg Abundance

The purpose of this project was to study the dispersal behaviour of female Pieris rapae (cabbage butterfly), with the goal of understanding the relationships between population abundance and dispersal mechanisms. Field studies indicated that (i) female flight orientation is not affected by the presence of a host plant patch, (ii) the number of eggs laid by a female on a patch is independent of patch size, at least within the range 18 to 18 000 plants, and (iii) dispersal rate of adult females from host plant patches is high. A model of egg abundance based on these assumptions was found to explain 85.4% of the variation in log egg abundance data taken from the literature. We suggest that, even though females disperse at high rates and are unable to orient towards host patches, populations maintain generally high abundances because host patches are common and widely distributed, and female flight paths are long. Both of these are expected to increase the probability of host detection.

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