It looks like these future-proofed roaches are not only climate change-immune but also becoming tougher to kill, specifically the German cockroach also known as Blattella
germanica L., based on a study published in the Scientific Reports in June.
Researchers from Purdue University conducted three field studies in a span of six months 'to compare three insecticide resistance intervention strategies for [German] cockroaches (Blattella
germanica L.) and evaluated resistance evolution across multiple generations.'
The Identification of a Bacterial Strain BGI1 Isolated From the Intestinal Flora of Blattella
Germanica, and Its Anti-Entomopathogenic Fungi Activity.
Brief exposure of Blattella
germanica (Blattodea) to insecticides formulated in various microcapsule sizes and applied on porous and non-porous surfaces.
Fumigant toxicity of plant essential oils and selected monoterpenoid components against the adult German cockroach, Blattella
germanica (L.) (Dictyoptera: Blattellidae).
Generally, these are American cockroach (Periplaneta americana) and the German cockroach (Blattella
germanica) as reported by Gonzalez-Domenech et al., (2012).
Cho, "Implementation of computational methods to pattern recognition of movement behavior of Blattella
germanica (Blattaria: Blattellidae) treated with [Ca.sup.2+] signal inducing chemicals," Applied Entomology and Zoology, vol.
Ahn, "Fumigant activity of (E)-anethole identified in Illicium verum fruit against Blattella
germanica," Pest Management Science, vol.
Kim, "Repellent activity of citrus oils against the cockroaches Blattella
germanica, Periplaneta americana and P.
farina , Chenopodium album , animal hair, tree mix, grass mix, cereal mix, dandelion, giant ragweed, Humulus species, locust bean, Blattella
germanica , mugwort, pine, plantain, Cochliobolus lunatus , Candida albicans , Penicillium notatum , Alternaria tenuis , and Aspergillus fumigatus ) were also enrolled in the study.