scholarly journals Predator-mediated, non-equilibrium coexistence of tree-hole mosquitoes in southeastern North America

Oecologia ◽  
1983 ◽  
Vol 57 (1-2) ◽  
pp. 239-256 ◽  
Author(s):  
William E. Bradshaw ◽  
Christina M. Holzapfel
Keyword(s):  
North America ◽  
Equilibrium Coexistence ◽  
Tree Hole ◽  
Non Equilibrium

scholarly journals Trap Comparison for Surveillance of the Western Tree Hole Mosquito, Aedes sierrensis (Diptera: Culicidae)

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Luis Fernando Chaves ◽  
Nadja Reissen ◽  
Gregory S White ◽  
Scott Gordon ◽  
Ary Faraji
Keyword(s):  
North America ◽  
Dirofilaria Immitis ◽  
Lower Cost ◽  
Salt Lake ◽  
Salt Lake City ◽  
Etiologic Agent ◽  
Tree Hole ◽  
Lake City ◽  
Carbon Dioxide Co2 ◽  
Aedes Sierrensis

Abstract The western tree hole mosquito, Aedes sierrensis (Ludlow), is a common nuisance mosquito and vector of Dirofilaria immitis (Leidy), the etiologic agent of dog heartworm, in western North America. Here, we compare weekly mosquito collections made with Mosquito Magnet (MM) traps, Biogents Sentinel (BGS) traps, and Biogents Bowl (BGS Bowl) traps set in Salt Lake City, UT, from the start of June to mid-August 2017. We found the number of mosquitoes decreased with rainfall and temperature independently of trap type. The highest number of mosquitoes were caught by BGS traps baited with carbon dioxide (CO2) and BG lure, which collected 62% (n = 422) of all mosquitoes, followed by the MM at 31% (n = 213), and both the BGS and BG Bowl with BG lure had 3.5% (n = 24) each. Aedes sierrensis females were caught weekly at similar densities (mean ± SD) in BGS with CO2 and lure (1.17 ± 2.93) and the MM (1.17 ± 2.66) traps during the study period. Given that BGS with CO2 and lure traps have several operational advantages over MM traps, including a quicker setup, smaller size, and lower cost, we consider BGS with CO2 and lure traps as the best suited surveillance tool to detect and remove Ae. sierrensis in the western United States and similar settings throughout North America.

Pupal Taxonomy of the Tree-Hole Culicoides (Diptera: Ceratopogonidae) in Eastern North America

1992 ◽  
Vol 85 (2) ◽  
pp. 111-120 ◽  
Author(s):  
Courtney Lamberson ◽  
Carol D. Pappas ◽  
Larry G. Pappas
Keyword(s):  
North America ◽  
Eastern North America ◽  
Tree Hole

Ecology of the Tree Hole Breeding Mosquitoes of Nearctic North America

1946 ◽  
Vol 16 (1) ◽  
pp. 31-47 ◽  
Author(s):  
Dale W. Jenkins ◽  
Stanley J. Carpenter
Keyword(s):  
North America ◽  
Tree Hole

Application of analytical electron microscopy to studies of equilibrium and non-equilibrium segregation in materials

1992 ◽  
Vol 50 (2) ◽  
pp. 1214-1215
Author(s):  
Edward A Kenik
Keyword(s):  
Electron Microscopy ◽  
Analytical Electron Microscopy ◽  
Extended Defects ◽  
Probe Diameter ◽  
Specimen Holder ◽  
Analytical Electron ◽  
Scanning Transmission ◽  
Solute Atoms ◽  
Equilibrium Segregation ◽  
Non Equilibrium

Segregation of solute atoms to grain boundaries, dislocations, and other extended defects can occur under thermal equilibrium or non-equilibrium conditions, such as quenching, irradiation, or precipitation. Generally, equilibrium segregation is narrow (near monolayer coverage at planar defects), whereas non-equilibrium segregation exhibits profiles of larger spatial extent, associated with diffusion of point defects or solute atoms. Analytical electron microscopy provides tools both to measure the segregation and to characterize the defect at which the segregation occurs. This is especially true of instruments that can achieve fine (<2 nm width), high current probes and as such, provide high spatial resolution analysis and characterization capability. Analysis was performed in a Philips EM400T/FEG operated in the scanning transmission mode with a probe diameter of <2 nm (FWTM). The instrument is equipped with EDAX 9100/70 energy dispersive X-ray spectrometry (EDXS) and Gatan 666 parallel detection electron energy loss spectrometry (PEELS) systems. A double-tilt, liquid-nitrogen-cooled specimen holder was employed for microanalysis in order to minimize contamination under the focussed spot.

Sign in / Sign up

Export Citation Format

Share Document