Movement and Spatial Population Structure of a Prairie Planthopper

Cronin, James T.

doi:10.1890/0012-9658(2003)084[1179:maspso]2.0.co;2

Cited by 77 publications

(163 citation statements)

References 54 publications

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“…30). In the analysis, we could exclude other possible hypotheses explaining the variability in DAR slope (16,17,33), because these hypotheses either did not vary between groups or were included in the analysis. First, moth and butterfly species in the study are of similar size, have a similar life cycle, and are largely herbivorous.…”

Section: Discussionmentioning

confidence: 99%

“…Multiple hypotheses have been proposed to explain the interspecific variability in density along patch size gradients, such as variability in search mode, trophic specialization, or density dependence (10,(15)(16)(17). Irrespective of mechanism, the understanding of species responses to patch size is centered on the relative role of local and regional processes.…”

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confidence: 99%

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Habitat specialization, body size, and family identity explain lepidopteran density–area relationships in a cross-continental comparison

Hambäck

Summerville

Steffan‐Dewenter

et al. 2007

Proc. Natl. Acad. Sci. U.S.A.

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Habitat fragmentation may strongly affect species density, species interactions, and the rate of ecosystem processes. It is therefore important to understand the observed variability among species responses to fragmentation and the underlying mechanisms. In this study, we compare density-area relationships (DARs) for 344 lepidopteran species belonging to 22 families (butterflies and moths). This analysis suggested that the DAR slope is generally positive for moths and negative for butterflies. The differences are suggested to occur because moths are largely olfactory searchers, whereas most butterflies are visual searchers. The analysis also suggests that DARs vary as a function of habitat specialization and body size. In butterflies, generalist species had a more negative DAR slope than specialist species because of a lower patch size threshold. In moths, the differences in DARslope between forest and open habitat species were large for small species but absent for large species. This difference is argued to occur because the DAR slope in large species mainly reflects their search mode, which does not necessarily vary between moth groups, whereas the slope in small species reflects population growth rates.butterflies and moths ͉ habitat fragmentation ͉ Lepidoptera ͉ life history traits ͉ olfactory and visual information

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Habitat specialization, body size, and family identity explain lepidopteran density–area relationships in a cross-continental comparison

Hambäck

Summerville

Steffan‐Dewenter

et al. 2007

Proc. Natl. Acad. Sci. U.S.A.

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“…that the whole ecosystem may be wiped out, under suitably unfavorable conditions, (12), in contrast to what happens to the two separate models corresponding to each single patch, namely equilibria Z 0 and W 0 . Thus, surprisingly, the "refuge" could be an endangerment for the whole environment, threatening its long term sustainability.…”

Section: Results Interpretationsmentioning

confidence: 99%

“…A tool for the understanding of population dynamics in these circumstances is provided by the metapopulation theory, [46]. Local population dynamics and interpatch migrations are responsible for metapopulation dynamics, with the possible result that the population persists globally, although in some cases the local populations become extinct [12,17,20,46,49]. Gathering migrations data between patches is however problematic.…”

Section: Introductionmentioning

confidence: 99%

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Simple Metaecoepidemic Models

Venturino

2010

Bull Math Biol

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We consider a simple predator-prey system with two possible habitats and where an epidemic spreads by contact among the prey, but it cannot affect the predators. Only the prey population can freely move from one environment to another. Several models are studied, for different assumptions on the structure of the demographic interactions and on the predators' feeding. Some counterintuitive results are derived. The role the safety refuge may in some cases entail negative consequences for the whole ecosystem. Also, depending on the system formulation, coexistence of all the populations may not always be supported.

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Invasion in patchy landscapes is affected by dispersal mortality and mate‐finding failure

Walter

Firebaugh

Tobin

et al. 2016

Ecology

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Range expansions are a function of population growth and dispersal, and nascent populations often must overcome demographic Allee effects (positive density dependence at low population densities) driven by factors such as mate-finding failure. Given the importance of individual movement to mate finding, links between landscape structure and movement may be critical to range expansion; however, landscape effects on other factors including mortality may be equally or more important. In one of the most comprehensive investigations of the interactions of these processes to date, we combined field experiments, simulation modeling, and analysis of empirical spread patterns to investigate how landscape structure affected the spread of the gypsy moth in Virginia and West Virginia. In experiments designed to assess how landscape attributes affect mate finding, we found adult males resisted leaving forest patches and the probability of locating a pheromone source declined more rapidly over distance in non-forest matrix than in forest. We used these findings to develop individual-based simulation models of gypsy moth population dynamics and spread in complex patch-matrix landscapes. The models produced an Allee effect that strengthened with reductions in forested area, but owing more so to dispersal mortality than to effects on mate location. Predicted maximum rates of population spread grew with increases in forest area due to increasing success of long-distance transport events. Evaluations of empirical data showed relationships between spread rates and landscape structure largely consistent with model predictions. We conclude rates of spread were largely driven by long-distance dispersal events, the success of which was influenced primarily by dispersal mortality of larvae in unsuitable matrix, and that landscape effects on mate location played a secondary role. Though influences of landscape structure on mate location appear to be unimportant to the spread of the gypsy moth, we predict they would have stronger effects on more dispersive species.

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Movement and Spatial Population Structure of a Prairie Planthopper

Cited by 77 publications

References 54 publications

Habitat specialization, body size, and family identity explain lepidopteran density–area relationships in a cross-continental comparison

Habitat specialization, body size, and family identity explain lepidopteran density–area relationships in a cross-continental comparison

Simple Metaecoepidemic Models

Invasion in patchy landscapes is affected by dispersal mortality and mate‐finding failure

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