Asian Long-horned Beetle dispersal potential estimated in computer-linked flight mills

2017 ◽  
Vol 142 (1-2) ◽  
pp. 282-286 ◽  
Author(s):  
M. Javal ◽  
G. Roux ◽  
A. Roques ◽  
D. Sauvard
Keyword(s):  
Dispersal Potential ◽  
Flight Mills ◽  
Horned Beetle

Inbreeding vs outbreeding depression in a marine species with low dispersal potential

2021 ◽  
Vol 42 (1) ◽  
Author(s):  
Camila Montecinos ◽  
Carolina Álvarez ◽  
Rodrigo Riera ◽  
Antonio Brante
Keyword(s):  
Marine Species ◽  
Outbreeding Depression ◽  
Dispersal Potential

scholarly journals Seed dispersal potential of Asian elephants

2016 ◽  
Vol 77 ◽  
pp. 144-151 ◽  
Author(s):  
Franziska K. Harich ◽  
Anna C. Treydte ◽  
Joseph O. Ogutu ◽  
John E. Roberts ◽  
Chution Savini ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Asian Elephants ◽  
Dispersal Potential

Global biogeography of marine dispersal potential

2020 ◽  
Vol 4 (9) ◽  
pp. 1196-1203 ◽  
Author(s):  
Mariana Álvarez-Noriega ◽  
Scott C. Burgess ◽  
James E. Byers ◽  
James M. Pringle ◽  
John P. Wares ◽  
...  
Keyword(s):  
Marine Dispersal ◽  
Dispersal Potential

PREDATION BY CALOSOMA SYCOPHANTA L. (COLEOPTERA: CARABIDAE): EVIDENCE FOR A LARGE IMPACT ON GYPSY MOTH, LYMANTRIA DISPAR L. (LEPIDOPTERA: LYMANTRIIDAE), PUPAE

1985 ◽  
Vol 117 (9) ◽  
pp. 1117-1126 ◽  
Author(s):  
Ronald M. Weseloh
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Ground Level ◽  
Mortality Factor ◽  
Substantial Impact ◽  
Entire Study ◽  
Dispersal Potential ◽  
Capture Recapture ◽  
The Impact ◽  
Entire Study Area

AbstractThe impact of predation by Calosoma sycophanta L. on an increasing prey population was assessed by recapturing marked adult beetles, periodically observing tagged gypsy moth pupae, and examining gypsy moth pupal remains in different microhabitats. Adult beetles dispersed in random directions but many tended to remain near the trap at which they were originally caught, suggesting a low dispersal potential. About 75% of the adult beetles present in the plot on one day were still present the next day. Capture–recapture estimates suggested that there were at most about 250 male beetles and half as many females/ha in the plot. Calosoma larvae destroyed 70% of tagged gypsy moth pupae under burlap bands on tree trunks near ground level, which was much more than any other mortality factor. Although this percentage was the same when mortality was assessed by looking at pupal remains within 5 m of the ground on tree trunks, pupae higher in trees and on leaves were not attacked as frequently. On average, about 40% of the pupae present in the entire study area were destroyed by Calosoma larvae. Each female beetle in the site would have had to produce about 30 progeny to have this effect. These data suggest that a relatively low number of adult beetles can have a substantial impact on gypsy moth populations.

scholarly journals Genetic diversity and dispersal potential of the stonefly Dinocras cephalotes in a central European low mountain range

2014 ◽  
Vol 33 (1) ◽  
pp. 181-192 ◽  
Author(s):  
Vasco Elbrecht ◽  
Christian K. Feld ◽  
Maria Gies ◽  
Daniel Hering ◽  
Martin Sondermann ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mountain Range ◽  
Central European ◽  
Dispersal Potential ◽  
Low Mountain Range

scholarly journals Evidence for a pervasive ‘idling-mode’ activity template in flying and pedestrian insects

2015 ◽  
Vol 2 (5) ◽  
pp. 150085 ◽  
Author(s):  
Andrew M. Reynolds ◽  
Hayley B. C. Jones ◽  
Jane K. Hill ◽  
Aislinn J. Pearson ◽  
Kenneth Wilson ◽  
...  
Keyword(s):  
Activity Patterns ◽  
Movement Ecology ◽  
Movement Patterns ◽  
Environmental Cues ◽  
Natural Environments ◽  
Scale Invariant ◽  
Scale Free ◽  
Flight Mills ◽  
Innate Behaviour ◽  
Multiple Species

Understanding the complex movement patterns of animals in natural environments is a key objective of ‘movement ecology’. Complexity results from behavioural responses to external stimuli but can also arise spontaneously in their absence. Drawing on theoretical arguments about decision-making circuitry, we predict that the spontaneous patterns will be scale-free and universal, being independent of taxon and mode of locomotion. To test this hypothesis, we examined the activity patterns of the European honeybee, and multiple species of noctuid moth, tethered to flight mills and exposed to minimal external cues. We also reanalysed pre-existing data for Drosophila flies walking in featureless environments. Across these species, we found evidence of common scale-invariant properties in their movement patterns; pause and movement durations were typically power law distributed over a range of scales and characterized by exponents close to 3/2. Our analyses are suggestive of the presence of a pervasive scale-invariant template for locomotion which, when acted on by environmental cues, produces the movements with characteristic scales observed in nature. Our results indicate that scale-finite complexity as embodied, for instance, in correlated random walk models, may be the result of environmental cues overriding innate behaviour, and that scale-free movements may be intrinsic and not limited to ‘blind’ foragers as previously thought.

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