scholarly journals Aerial Dispersal Behavior of Two Orb Weaving Spiders

1977 ◽  
Vol 84 (1) ◽  
pp. 13-27 ◽  
Author(s):  
Wayne W. Tolbert
Keyword(s):  
Aerial Dispersal ◽  
Dispersal Behavior

AERIAL DISPERSAL BEHAVIOR OF LARVAL BAGWORMS, THYRIDOPTERYX EPHEMERAEFORMIS (LEPIDOPTERA: PSYCHIDAE)

1986 ◽  
Vol 118 (6) ◽  
pp. 525-536 ◽  
Author(s):  
David L. Cox ◽  
Daniel A. Potter
Keyword(s):  
Abiotic Factors ◽  
Dispersal Distance ◽  
Juniperus Virginiana ◽  
Diel Periodicity ◽  
Host Condition ◽  
Aerial Dispersal ◽  
Dispersal Behavior ◽  
Subsequent Behavior ◽  
Neonate Larvae ◽  
Dispersal Period

AbstractSeasonal and daily patterns of ballooning, and behavioral processes involved in aerial dispersal of the bagworm, Thyridopteryx ephemeraeformis (Haworth), were studied on Juniperus virginiana L. in Kentucky. The aerial dispersal period began in mid-May 1983 and lasted ca. 1 month. About 75% of dispersing larvae ballooned after making a bag. Settling velocities were determined for larvae with and without bags and trailing varying lengths of silk; a model was then developed that predicts dispersal distance for a particular wind speed and departure height. Most aerial dispersal is probably short-range. The bag reduced potential dispersal distance, but larvae with bags survived ca. 2 days longer than those without bags when exposed to abiotic factors off of a host. Larvae without bags ballooned mostly in morning, whereas 80% of the larvae dispersing with a bag ballooned in the afternoon. These patterns may be related to the diel periodicity of emergence of neonate larvae from old female bags, and the subsequent behavior of 1st instars prior to dispersal. A large proportion of each cohort emigrates regardless of host condition.

Aerial Dispersal of Red Pine Scale, Matsucoccus resinosae (Homoptera: Margarodidae) 1

1978 ◽  
Vol 7 (4) ◽  
pp. 556-563 ◽  
Author(s):  
George R. Stephens ◽  
Donald E. Aylor
Keyword(s):  
Red Pine ◽  
Aerial Dispersal ◽  
Matsucoccus Resinosae

scholarly journals LygusFlight and Dispersal Behavior

1973 ◽  
Vol 2 (3) ◽  
pp. 361-364 ◽  
Author(s):  
A. J. Mueller ◽  
V. M. Stern
Keyword(s):  
Dispersal Behavior

Initial dispersal behavior and survival of non-native juvenile Burmese pythons (Python bivittatus) in South Florida

BMC Zoology ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Shannon E. Pittman ◽  
Ian A. Bartoszek
Keyword(s):  
Invasive Species ◽  
Management Practices ◽  
South Florida ◽  
Movement Behavior ◽  
Forested Wetland ◽  
Common Source ◽  
Vital Rates ◽  
Natural Habitats ◽  
Dispersal Behavior ◽  
Python Bivittatus

Abstract Background Dispersal behavior is a critical component of invasive species dynamics, impacting both spatial spread and population density. In South Florida, Burmese pythons (Python bivittatus) are an invasive species that disrupt ecosystems and have the potential to expand their range northward. Control of python populations is limited by a lack of information on movement behavior and vital rates, especially within the younger age classes. We radio-tracked 28 Burmese pythons from hatching until natural mortality for approximately 3 years. Pythons were chosen from 4 clutches deposited by adult females in 4 different habitats: forested wetland, urban interface, upland pine, and agricultural interface. Results Known-fate survival estimate was 35.7% (95% CI = 18% - 53%) in the first 6 months, and only 2 snakes survived 3 years post hatching. Snakes moving through ‘natural’ habitats had higher survival than snakes dispersing through ‘modified’ habitats in the first 6- months post-hatching. Predation was the most common source of mortality. Snakes from the agricultural interface utilized canals and displayed the largest net movements. Conclusions Our results suggest that pythons may have lower survival if clutches are deposited in or near urbanized areas. Alternatively, juvenile pythons could quickly disperse to new locations by utilizing canals that facilitate linear movement. This study provides critical information about behavioral and life history characteristics of juvenile Burmese pythons that will inform management practices.

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