First report of Colletotrichum fioriniae infections in brown marmorated stink bugs, Halyomorpha halys

Jennifer B González; Chloe A Lambert; Alexandra M Foley; Ann E Hajek

doi:10.1016/j.jip.2023.107939

First report of Colletotrichum fioriniae infections in brown marmorated stink bugs, Halyomorpha halys

J Invertebr Pathol. 2023 Jul:199:107939. doi: 10.1016/j.jip.2023.107939. Epub 2023 May 25.

Authors

Jennifer B González¹, Chloe A Lambert², Alexandra M Foley², Ann E Hajek³

Affiliations

¹ Biology Department, Nazareth College, Rochester, NY 14618, USA; Department of Environmental Studies, Dartmouth College, Hanover, NH 03755, USA.
² Biology Department, Nazareth College, Rochester, NY 14618, USA.
³ Department of Entomology, Cornell University, Ithaca, NY 14853-2601, USA. Electronic address: aeh4@cornell.edu.

PMID: 37236421
DOI: 10.1016/j.jip.2023.107939

Abstract

An epizootic caused by fungal pathogens occurred among Halyomorpha halys, brown marmorated stink bugs, while they were overwintering, with infections also occurring after overwintering. We report that one of the two pathogens responsible was Colletotrichum fioriniae (Marcelino & Gouli) Pennycook; a species well known as a plant pathogen and endophyte and which has only previously been reported naturally infecting elongate hemlock scales, Fiorinia externa. To prove pathogenicity, H. halys adults challenged with conidia died from infections and the fungus subsequently produced conidia externally on cadavers.

Keywords: Biological control; Disease ecology; Emergent pathogen; Entomopathogenic fungus; Pentatomidae.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't

MeSH terms

Animals
Cadaver
Colletotrichum*
Heteroptera*
Plants

Supplementary concepts

Colletotrichum fioriniae