info:eu-repo/semantics/article
Natural occurrence in Argentina of a new fungal pathogen of cockroaches, Metarhizium argentinense sp. nov.
Fecha
2019-05Registro en:
Gutierrez, Alejandra Concepción; Leclerque, Andreas; Manfrino, Romina Guadalupe; Luz, Christian; Ferrari, Walter Antonio Oscar; et al.; Natural occurrence in Argentina of a new fungal pathogen of cockroaches, Metarhizium argentinense sp. nov.; Elsevier Science; Fungal Biology; 123; 5; 5-2019; 364-372
1878-6146
CONICET Digital
CONICET
Autor
Gutierrez, Alejandra Concepción
Leclerque, Andreas
Manfrino, Romina Guadalupe
Luz, Christian
Ferrari, Walter Antonio Oscar
Barneche, Jorge Adrian
Garcia, Juan Jose
Lopez Lastra, Claudia Cristina
Resumen
The aim of this study was to search for entomopathogenic fungi that infect wild cockroaches in forest ecosystems in two protected natural areas of Argentina. Two isolates of Metarhizium argentinenseBlaberidae: Epilamprinae) through the use of morphological characteristics and molecular phylogenetic analyses. This novel species was found in Argentina and is a member of the Metarhizium flavoviride species complex. Phylogenetic analyses, based on sequence similarity analysis using internal transcribed spacer (ITS) and a set of four protein-coding marker sequences (EF1A, RPB1, RPB2 and BTUB), supported the status of this fungus as a new species. In addition, we tested the biological activity of the new species through assays against Blattella germanica nymphs and found that the two evaluated isolates were pathogenic. However, isolate CEP424 was more virulent and caused a confirmed mortality of 76 % with a median lethal time of 7.2 d. This study reports the southernmost worldwide location of a Metarhizium species that infects cockroaches and will help expand the knowledge of the biodiversity of pathogenic fungi of Argentine cockroaches.