Potential of the oothecal parasitoid Aprostocetus hagenowii (Hymenoptera: Eulophidae) as a biological control agent for the Turkestan cockroach (Blattodea: Blattidae)

Author:

Smith Chelsea M1ORCID,Chicas-Mosier Ana M2ORCID,Fadamiro Henry Y3,Appel Arthur G1ORCID

Affiliation:

1. Department of Entomology and Plant Pathology, Auburn University , 301 Funchess Hall, Auburn, AL 36849-5413 , USA

2. Center for Environmentally Beneficial Catalysis, University of Kansas , 1501 Wakarusa Drive, Building A, Lawrence, KS 66047 , USA

3. Department of Entomology, Texas A&M University , 404 Heep Ste 2475, College Station, TX 77843-2475 , USA

Abstract

Abstract The Turkestan cockroach, Blatta lateralis (Walker), is a peridomestic pest of growing concern in the US Southwest. The parasitoid Aprostocetus hagenowii (Ratzburg) is used in IPM programs targeting other blattid cockroach species and may aid in B. lateralis suppression. Information about the ability of A. hagenowii to parasitize B. lateralis is lacking. A no-choice host-switching experiment was used to test A. hagenowii acceptance of B. lateralis oothecae, and a multigenerational no-choice experiment was used to determine the suitability of B. lateralis as a host for A. hagenowii over several months of rearing. Periplaneta americana (L.) (Blattodea: Blattidae), the preferred host of A. hagenowii, and Blatta orientalis L., a known host and relative of B. lateralis, were used for comparison. Development time was similar among hosts and generations (P > 0.05). Parasitism success and proportion of female progeny declined significantly with subsequent generations on both Blatta spp. (parasitism success: χ2 = 14.916; df = 2; P = 0.001; proportion female: H = 6.364; df = 2; P = 0.041). These results suggest that A. hagenowii may initially aid in suppression of B. lateralis, but an overall decline in fitness will require repeated releases or provisioning of P. americana oothecae. Development of a strain more suitable for B. lateralis control may be possible via selection from laboratory strains or through use of wild A. hagenowii from areas where B. lateralis is present.

Funder

National Institute of Food and Agriculture

Publisher

Oxford University Press (OUP)

Subject

Insect Science,Ecology,General Medicine

Reference47 articles.

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