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Life tables of Habrobracon hebetor (Hymenoptera: Braconidae) parasitizing Anagasta kuehniella and Plodia interpunctella (Lepidoptera: Pyralidae): effect of host density.
J Econ Entomol. 2008 Jun; 101(3):982-8.JE

Abstract

The reproductive performance of the parasitoid Habrobracon hebetor (Say) (Hymenoptera: Braconidae) against the moths Anagasta kuehniella Zeller and Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) was studied in the laboratory. The analysis was based on the comparison of parasitoid's life table parameters related to those of its hosts at various conditions of host density (daily supply of 1, 5, 15, and 30 full-grown host larvae). The estimated parameters were the intrinsic rate of natural increase (rm), the net reproductive rate (R0), the mean generation time (G), the finite capacity of increase (lambda), the gross reproductive rate (GRR), the doubling time (DT), the reproductive value (Vx), and the life expectancy (ex). The rm of H. hebetor proved to be significantly higher than those of its hosts at all host densities. When only one host per day was supplied, the wasp had the lowest reproductive potential, whereas it was maximized when 15 hosts per day were exposed. Maximum values of R0 and GRR were obtained at densities > or =15 host larvae per day. Any increase in host supply above this threshold did not cause significant changes in life table parameters. Variation of rm as a function of host density can be described by the linear regression. Sex ratio of wasp progeny (females/total) ranged from 0.36 to 0.42, irrespective of host density or species. Newly emerged adults recorded maximum ex and Vx. The results of this study can be used to improve mass rearing programs and inoculative release applications of H. hebetor against moth pests of stored products.

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Authors+Show Affiliations

Eliopoulos PA
Department of Plant Production, Technological Educational Institute of Larissa, 41 110 Larissa, Greece. p_eliopoulos@hotmail.com
Stathas GJ
No affiliation info available

MeSH

AnimalsClutch SizeFemaleFertilityFlourGreeceHost-Parasite InteractionsHymenopteraLarvaLife ExpectancyLife TablesOvipositionPest Control, BiologicalPesticidesPupa

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18613603

Citation

Eliopoulos, P A., and G J. Stathas. "Life Tables of Habrobracon Hebetor (Hymenoptera: Braconidae) Parasitizing Anagasta Kuehniella and Plodia Interpunctella (Lepidoptera: Pyralidae): Effect of Host Density." Journal of Economic Entomology, vol. 101, no. 3, 2008, pp. 982-8.
Eliopoulos PA, Stathas GJ. Life tables of Habrobracon hebetor (Hymenoptera: Braconidae) parasitizing Anagasta kuehniella and Plodia interpunctella (Lepidoptera: Pyralidae): effect of host density. J Econ Entomol. 2008;101(3):982-8.
Eliopoulos, P. A., & Stathas, G. J. (2008). Life tables of Habrobracon hebetor (Hymenoptera: Braconidae) parasitizing Anagasta kuehniella and Plodia interpunctella (Lepidoptera: Pyralidae): effect of host density. Journal of Economic Entomology, 101(3), 982-8.
Eliopoulos PA, Stathas GJ. Life Tables of Habrobracon Hebetor (Hymenoptera: Braconidae) Parasitizing Anagasta Kuehniella and Plodia Interpunctella (Lepidoptera: Pyralidae): Effect of Host Density. J Econ Entomol. 2008;101(3):982-8. PubMed PMID: 18613603.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Life tables of Habrobracon hebetor (Hymenoptera: Braconidae) parasitizing Anagasta kuehniella and Plodia interpunctella (Lepidoptera: Pyralidae): effect of host density. AU - Eliopoulos,P A, AU - Stathas,G J, PY - 2008/7/11/pubmed PY - 2008/8/8/medline PY - 2008/7/11/entrez SP - 982 EP - 8 JF - Journal of economic entomology JO - J Econ Entomol VL - 101 IS - 3 N2 - The reproductive performance of the parasitoid Habrobracon hebetor (Say) (Hymenoptera: Braconidae) against the moths Anagasta kuehniella Zeller and Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae) was studied in the laboratory. The analysis was based on the comparison of parasitoid's life table parameters related to those of its hosts at various conditions of host density (daily supply of 1, 5, 15, and 30 full-grown host larvae). The estimated parameters were the intrinsic rate of natural increase (rm), the net reproductive rate (R0), the mean generation time (G), the finite capacity of increase (lambda), the gross reproductive rate (GRR), the doubling time (DT), the reproductive value (Vx), and the life expectancy (ex). The rm of H. hebetor proved to be significantly higher than those of its hosts at all host densities. When only one host per day was supplied, the wasp had the lowest reproductive potential, whereas it was maximized when 15 hosts per day were exposed. Maximum values of R0 and GRR were obtained at densities > or =15 host larvae per day. Any increase in host supply above this threshold did not cause significant changes in life table parameters. Variation of rm as a function of host density can be described by the linear regression. Sex ratio of wasp progeny (females/total) ranged from 0.36 to 0.42, irrespective of host density or species. Newly emerged adults recorded maximum ex and Vx. The results of this study can be used to improve mass rearing programs and inoculative release applications of H. hebetor against moth pests of stored products. SN - 0022-0493 UR - https://www.unboundmedicine.com/medline/citation/18613603/Life_tables_of_Habrobracon_hebetor__Hymenoptera:_Braconidae__parasitizing_Anagasta_kuehniella_and_Plodia_interpunctella__Lepidoptera:_Pyralidae_:_effect_of_host_density_ L2 - https://academic.oup.com/jee/article-lookup/doi/10.1603/0022-0493(2008)101[982:LTOHHH]2.0.CO;2 DB - PRIME DP - Unbound Medicine ER -
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