scholarly journals Effects of destruxin A on Rhipicephalus (Boophilus) microplus ticks (Acari: Ixodidae)

2011 ◽  
Vol 20 (4) ◽  
pp. 338-341 ◽  
Author(s):  
Patrícia Silva Gôlo ◽  
Isabele da Costa Angelo ◽  
Mariana Guedes Camargo ◽  
Wendell Marcelo de Souza Perinotto ◽  
Vânia Rita Elias Pinheiro Bittencourt

This study evaluated the effects of destruxin A on Rhipicephalus (Boophilus) microplus females, since this toxin is one of the likely causes of high mortality induced by the entomopathogenic fungus Metarhizium anisopliae in arthropods. Ticks were immersed or inoculated with different concentrations of destruxin A. Despite the doses applied, there were no deaths or significant alterations in oviposition between the groups treated with destruxin A and the control groups. No other external effect caused by destruxin, such as tetanic paralysis, was observed in these engorged female ticks after the treatment.

2005 ◽  
Vol 37 (3-4) ◽  
pp. 231-244 ◽  
Author(s):  
Walquíria Arruda ◽  
Irina Lübeck ◽  
Augusto Schrank ◽  
Marilene Henning Vainstein

1995 ◽  
Vol 52 (3) ◽  
pp. 548-554 ◽  
Author(s):  
V. Kava - Cordeiro ◽  
E.A. Luna - Alves - Lima ◽  
J.L. Azevedo

A wild strain of Metarhizium anisopliae, an entomopathogenic fungus, was submitted to three mutagenic agents: gamma radiation, ultraviolet light and nitrous acid. Survival curves were obtained and mutants were selected using different mutagenic doses which gave 1 to 5% survival. Morphological and auxotrophic mutants were isolated. Morphological mutants were grouped in a class with yellow conidia and other with pale vinaceous conidia as opposed to the green wild type conidia. Auxotrophic mutants had requirements for vitamin and aminoacid biosynthesis. More than 58% of the total auxotrophk mutants required proline/aipnine. Gamma radiation showed to be the most efficient mutagenic agent giving 0.2% of auxotrophk mutants followed by ultraviolet light (0.12%) and nitrous acid (0.06%).The conidial colour and auxotrophk mutants isolated until now from M. anisopliae were reviewed.


1980 ◽  
Vol 22 (2) ◽  
pp. 309-314 ◽  
Author(s):  
K. Al-Aidroos

In an attempt to demonstrate the existence of a parasexual cycle in the imperfect entomopathogenic fungus, Metarhizium anisopliae (Metschnikoff) Sorokin, doubly- and triply-marked strains were forced to form heterokaryons. All heterokaryons produced diploid spores, two of which yielded putative recombinants.


2011 ◽  
Vol 181 (2-4) ◽  
pp. 267-273 ◽  
Author(s):  
Marcos Valerio Garcia ◽  
Antonio Carlos Monteiro ◽  
Matias Pablo Juan Szabó ◽  
Dinalva Alves Mochi ◽  
Lucas Detogni Simi ◽  
...  

1985 ◽  
Vol 46 (1) ◽  
pp. 20-25 ◽  
Author(s):  
G. Riba ◽  
J.L. de Azevedo ◽  
C. Messias ◽  
W. Dias da Silveira ◽  
R. Tuveson

1999 ◽  
Vol 103 (8) ◽  
pp. 974-980 ◽  
Author(s):  
E.N. Inyang ◽  
T.M. Butt ◽  
K.J. Doughty ◽  
A.D. Todd ◽  
S. Archer

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