scholarly journals Age- and Density-Dependent Prophylaxis in the Migratory, Cannibalistic Mormon Cricket Anabrus simplex (Orthoptera: Tettigoniidae)

2012 ◽  
Vol 41 (1) ◽  
pp. 166-171 ◽  
Author(s):  
Robert B. Srygley
Keyword(s):  
Density Dependent ◽  
Mormon Cricket ◽  
Anabrus Simplex

Estimation of the composition of the cuticular wax of the Mormon cricket, Anabrus simplex Hald.

1960 ◽  
Vol 5 (1) ◽  
pp. 47-60 ◽  
Author(s):  
G. Baker ◽  
J.H. Pepperz ◽  
L.H. Johnson ◽  
E. Hastings
Keyword(s):  
Cuticular Wax ◽  
Mormon Cricket ◽  
Anabrus Simplex

Virulence of the insect-pathogenic fungi Metarhizium spp. to Mormon crickets, Anabrus simplex (Orthoptera: Tettigoniidae)

2021 ◽  
pp. 1-8
Author(s):  
Drauzio E. N. Rangel ◽  
Helen G. Bignayan ◽  
Hernani G. Golez ◽  
Chad A. Keyser ◽  
Edward W. Evans ◽  
...  
Keyword(s):  
Pathogenic Fungi ◽  
Field Application ◽  
Control Measures ◽  
Metarhizium Robertsii ◽  
Metarhizium Acridum ◽  
Threatened And Endangered Species ◽  
Insect Pathogenic Fungi ◽  
The Usa ◽  
Mormon Cricket ◽  
Anabrus Simplex

Abstract The Mormon cricket (MC), Anabrus simplex Haldeman, 1852 (Orthoptera: Tettigoniidae), has a long and negative history with agriculture in Utah and other western states of the USA. Most A. simplex populations migrate in large groups, and their feeding can cause significant damage to forage plants and cultivated crops. Chemical pesticides are often applied, but some settings (e.g. habitats of threatened and endangered species) call for non-chemical control measures. Studies in Africa, South America, and Australia have assessed certain isolates of Metarhizium acridum as very promising pathogens for Orthoptera: Acrididae (locust) biocontrol. In the current study, two isolates of Metarhizium robertsii, one isolate of Metarhizium brunneum, one isolate of Metarhizium guizhouense, and three isolates of M. acridum were tested for infectivity to MC nymphs and adults of either sex. Based on the speed of mortality, M. robertsii (ARSEF 23 and ARSEF 2575) and M. brunneum (ARSEF 7711) were the most virulent to instars 2 to 5 MC nymphs. M. guizhouense (ARSEF 7847) from Arizona was intermediate and the M. acridum isolates (ARSEF 324, 3341, and 3609) were the slowest killers. ARSEF 2575 was also the most virulent to instar 6 and 7 nymphs and adults of MC. All of the isolates at the conidial concentration of 1 × 107 conidia ml−1 induced approximately 100% mortality by 6 days post application of fungal conidia. In conclusion, isolates ARSEF 23, ARSEF 2575, and ARSEF 7711 acted most rapidly to kill MC under laboratory conditions. The M. acridum isolates, however, have much higher tolerance to heat and UV-B radiation, which may be critical to their successful use in field application.

scholarly journals Immune Response of Mormon Crickets That Survived Infection byBeauveria bassiana

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Robert B. Srygley ◽  
Stefan T. Jaronski
Keyword(s):  
Biological Control ◽  
Immune Response ◽  
Beauveria Bassiana ◽  
Sunflower Oil ◽  
Entomopathogenic Fungus ◽  
Biological Control Agent ◽  
Control Agent ◽  
Mormon Cricket ◽  
Anabrus Simplex ◽  
Dose Dependent

Beauveria bassiana(Fungi: Ascomycota) is an entomopathogenic fungus that serves as a biological control agent of Mormon cricketsAnabrus simplexHaldeman (Orthoptera: Tettigoniidae) and other grasshopper pests. To measure the dose-dependent response of Mormon crickets to fungal attack, we appliedB. bassianastrain GHA topically to adults using doses of 5.13 ×  to 1.75 ×  conidia in sunflower oil, with oil only as a control. After three weeks, we assessed the survivors' hemolymph for fungal cells, active phenoloxidase (PO), and lysozyme. Mortality increased and body mass of survivors decreased with conidial dose. survivors' PO activity was elevated to the same level independent of dose. Those with fungal cells visible in their hemolymph did not differ in PO activity from those with clear hemolymph. We conclude that circulating PO may be an important enzymatic defense againstBeauveriainfection and that it is associated with attempted clearing ofBeauveriablastospores and hyphae from Mormon cricket hemolymph.

Mormon Cricket, Anabrus simplex Haldeman (Orthoptera: Tettigoniidae)

2008 ◽  
pp. 2463-2466
Author(s):  
George Hangay ◽  
Susan V. Gruner ◽  
F. W. Howard ◽  
John L. Capinera ◽  
Eugene J. Gerberg ◽  
...  
Keyword(s):  
Mormon Cricket ◽  
Anabrus Simplex

THE DISTRIBUTION OF THE MORMON CRICKET, ANABRUS SIMPLEX HALDEMAN, IN SASKATCHEWAN

1939 ◽  
Vol 71 (9) ◽  
pp. 202-204
Author(s):  
L. C. Paul ◽  
W. B. Fox
Keyword(s):  
The Past ◽  
Mormon Cricket ◽  
Anabrus Simplex ◽  
Abundance And Distribution

Within the past few years an increase both in abundance and distribution of the Mormon cricket has occurred in Saskatchewan. This was especially conspicuous in 1938.

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