Choosing Species to Enhance Native Plant Abundance Following Biological Control of Leafy Spurge (Euphorbia esula)

2016 ◽  
Vol 34 (1) ◽  
pp. 3-6 ◽  
Author(s):  
P. Lesica ◽  
D. Hanna ◽  
N. Birkeland
Keyword(s):  
Biological Control ◽  
Leafy Spurge ◽  
Euphorbia Esula ◽  
Native Plant ◽  
Plant Abundance

scholarly journals Feeding Impacts of a Leafy Spurge (Euphorbia esula) Biological Control Agent on a Native Plant, Euphorbia robusta

2008 ◽  
Vol 1 (1) ◽  
pp. 26-30 ◽  
Author(s):  
John L. Baker ◽  
Nancy A. P. Webber
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Canopy Cover ◽  
Ground Cover ◽  
Leafy Spurge ◽  
Control Agent ◽  
Euphorbia Esula ◽  
Native Plant ◽  
Feeding Damage ◽  
Aphthona Nigriscutis

AbstractThe biological control agent Aphthona nigriscutis Foudras (Chrysomelidae) established in Fremont County, WY since 1992 on leafy spurge was released into a mixed stand a native plant Euphorbia robusta Engelm. During host range testing, E. robusta was a likely host for A. nigriscutis under laboratory conditions. In 1999, A. nigriscutis was observed feeding on both E. esula and 31 of 36 E. robusta plants present on about 2 ha (5 ac) where the visually estimated E. esula canopy cover was 50%. By August 2001, E. esula cover had declined to less than 5% and E. robusta plants had increased to 450 plants with 26 (5.8%) showing feeding damage. In 2006 Euphorbia esula ground cover was 2% and of 598 E. robusta plants originally marked, 391 could be located and four of these had damage consistent with A. nigriscutis feeding. For the 8-yr period, E. esula ground cover was inversely correlated to E. robusta density and positively correlated to A. nigriscutis feeding damage on E. robusta. This study shows that while also acceptable to A. nigriscutis in the field, feeding on E. robusta declined with declining densities of the target weed while E. robusta population densities increased. It seems that some risk in this regard is acceptable in light of the damage from the target weed and the generally high level of selectivity provided by biological control agents.

Phenology of first and peak emergence of Aphthona lacertosa and A. nigriscutis: Two flea beetles introduced for biological control of leafy spurge, Euphorbia esula L.

2006 ◽  
Vol 37 (3) ◽  
pp. 382-391 ◽  
Author(s):  
Luke C. Skinner ◽  
David W. Ragsdale ◽  
Richard W. Hansen ◽  
Monika A. Chandler ◽  
Greg Spoden
Keyword(s):  
Biological Control ◽  
Leafy Spurge ◽  
Euphorbia Esula ◽  
Flea Beetles ◽  
Aphthona Lacertosa

Description of EuropeanChamaespheciaspp. (Lepidoptera: Sesiidae) feeding onEuphorbia(Euphorbiaceae), and their potential for biological control of leafy spurge (Euphorbia esula) in North America

1996 ◽  
Vol 86 (6) ◽  
pp. 703-714 ◽  
Author(s):  
I. Tosevski ◽  
André Gassmann ◽  
D. Schroeder
Keyword(s):  
Biological Control ◽  
Host Plant ◽  
Habitat Type ◽  
Leafy Spurge ◽  
Euphorbia Esula ◽  
Main Root ◽  
Male And Female ◽  
South Eastern Europe ◽  
Similar Survival

AbstractThe description of the tenChamaespheciaspecies associated withEuphorbiain eastern and south-eastern Europe is based on external adult morphology, male and female genitalia, and the structure of the egg chorion. These species can be divided into two groups according to the shape of the setae of the dorso-basal part of the valvae in the male genitalia. MostChamaespheciaspecies are associated with one species of host-plant and all are closely tied to one habitat type. The host-plant and the structure of the egg chorion are fundamental characteristics for the determination of a few species, and very helpful for the others. All species bore into the main root of their host-plant and overwinter as larvae. With the exception of two species which have an annual or biennial life cycle, all species are univoltine. The larvae of three of the eightChamaespheciaspp. investigated feed and develop in the roots of North American leafy spurge,Euphorbia esulasensu lato. Of these, the best candidate for the biological control of leafy spurge isC. crassicornis, because the larvae have a similar survival rate on the target weed and the European host-plant,E. virgata.

THE BIOLOGY OF CANADIAN WEEDS. 39 Euphorbia esula L.

1980 ◽  
Vol 60 (2) ◽  
pp. 651-663 ◽  
Author(s):  
K.F. BEST ◽  
G.G. BOWES ◽  
A.G. THOMAS ◽  
M.G. MAW
Keyword(s):  
Introduced Species ◽  
Leafy Spurge ◽  
Biological Data ◽  
Euphorbia Esula ◽  
Native Plant ◽  
Ecological Amplitude ◽  
Plant Associations ◽  
Prairie Provinces

Biological data are summarized for Euphorbia esula L. (leafy spurge). The introduced species from Europe is found throughout Canada and is particularly prevalent in cultivated fields and rangelands of the Prairie Provinces. It has a broad ecological amplitude and is found growing in different native plant associations. Several herbicides are available for the control of E. esula.

AnAlternariasp. on Leafy Spurge (Euphorbia esula)

Weed Science ◽  
1983 ◽  
Vol 31 (1) ◽  
pp. 86-88 ◽  
Author(s):  
Joseph M. Krupinsky ◽  
Russell J. Lorenz
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Field Studies ◽  
Leafy Spurge ◽  
Control Agent ◽  
Euphorbia Esula ◽  
Cultural Characteristics ◽  
Representative Strain

In 1979 and 1980, isolates ofAlternariawere obtained from diseased leafy spurge (Euphorbia esulaL.) plants. The pathogenicity of anAlternariasp. towards leafy spurge was demonstrated in glasshouse and limited field studies, and theAlternariais considered to be a potential biological - control agent for leafy spurge. The pathogenicity and cultural characteristics of the fungus suggest its classification asA. tenuissimaf. sp.euphorbiae,with isolate Krupinsky 80-3547ss4 (= E. G. Simmons 35-079) as a representative strain.

Sign in / Sign up

Export Citation Format

Share Document