EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Parasitism and superparasitism of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on Sitotroga cerealella (Oliver) (Lepidoptera: Gelechiidae) eggs



Parasitism and superparasitism of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on Sitotroga cerealella (Oliver) (Lepidoptera: Gelechiidae) eggs



Neotropical Entomology 38(2): 237-242



The parasitoid Trichogramma has been used worldwide as biological control agent due to its wide geographic distribution, high specialization and efficacy against many lepidopteran pests. Biological and behavioral traits of Trichogramma pretiosum Riley parasitizing Sitotroga cerealella (Oliver) eggs were studied aiming to a better understanding of the results from parasitism and superparasitism. The variables investigated were: host acceptance and contact time by T. pretiosum on parasitized host, percentage of parasitoid emergence, number of deformed individuals produced, egg-adult period, sex ratio, offspring female body size and longevity, and number of S. cerealella eggs parasitized/female. Parasitism rejection was observed on parasitized host eggs after 24, 72 and 120 h of parasitism. The rejection was higher for eggs parasitized after 72 h and 120 h of parasitism as compared to the eggs after 24 h of parasitism. T. pretiosum contact time on eggs after 24 h of parasitism was greater than on 72 and 120 h. The offspring produced from hosts from which a single parasitoid emerged were larger, exhibited no deformities and greater capacity of parasitism, different from those produced from eggs where two parasitoids emerged. Offspring longevity, however, was similar for females emerged from hosts from which one or two adults emerged. In conclusion, T. pretiosum was able to recognize previously parasitized eggs and the superparasitism reduced the parasitoid.reproductive success.

(PDF emailed within 1 workday: $29.90)

Accession: 037452684

Download citation: RISBibTeXText

PMID: 19488513



Related references

Quality assessment of Trichogramma pretiosum Hymenoptera Trichogrammatidae in eggs of Sitotroga cerealella Lepidoptera Gelechiidae Avaliacao da qualidade de Trichogramma pretiosum Hymenoptera Trichogrammatidae em ovos de Sitotroga cerealella Lepidoptera Gelechiidae. Acta Scientiarum Agronomy. July-Dec; 252: 485-489, 2003

Fertility life table of Trichogramma pretiosum and Trichogramma acacioi (Hymenoptera: Trichogrammatidae) on Sitotroga cerealella (Lepidoptera: Gelechiidae) eggs at different constant temperatures. Annals of the Entomological Society of America 97(4): 729-731, 2004

Functional response of Trichogramma pretiosum Riley Hymenoptera Trichogrammatidae to Tuta absoluta Meyrick Lepidoptera Gelechiidae eggs effect of host age Resposta funcional de Trichogramma pretiosum Riley Hymenoptera Trichogrammatidae parasitando ovos de Tuta absoluta Meyrick Lepidoptera Gelechiidae efeito da idade do hospedeiro. Anais da Sociedade Entomologica do Brasil. Marco; 291: 85-93, 2000

Avaliacao da qualidade de Trichogramma pretiosum (Hymenoptera: Trichogrammatidae) em ovos de Sitotroga cerealella (Lepidoptera: Gelechiidae). Acta Scientiarum Agronomy 25(2): 485-489, 2003

Parasitism capacity of Trichogramma pretiosum Riley (Hymenoptera : Trichogrammatidae) reared under different temperatures on Bonagota salubricola (Meyrick) (Lepidoptera : Tortricidae) eggs FT Capacidade de Parasitismo de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) em Ovos de Bonagota salubricola (Meyrick) (Lepidoptera: Tortricidae) sob Diferentes Temperaturas. 2007

Methods of the long-term storage and utilization of eggs of Sitotroga cerealella (Oliver) for production of Trichogramma pretiosum Riley. Colloques de l' INRA (43): 373-377, 1988

Biology of Trichogramma pretiosum Riley in eggs of Sitotroga cerealella Olivier Biologia de Trichogramma pretiosum Riley em ovos de Sitotroga cerealella Olivier. Pesquisa Agropecuaria Brasileira. Agosto; 358: 1669-1674, 2000

Biology and parasitism of Trichogramma atopovirilia Oatman Platner and Trichogramma pretiosum Riley Hymenoptera, Trichogrammatidae on eggs of Spodoptera frugiperda JE Smith Lepidoptera, Noctuidae Biologia e parasitismo de Trichogramma atopovirilia Oatman Platner e Trichogramma pretiosum Riley Hymenoptera, Trichogrammatidae em ovos de Spodoptera frugiperda JE Smith Lepidoptera, Noctuidae. Revista Brasileira de Entomologia. Marco; 481: 119-126, 2004

Progeny production by Trichogramma minutum (Hymenoptera: Trichogrammatidae) utilizing eggs of Choristoneura fumiferana (Lepidoptera: Tortricidae) and Sitotroga cerealella (Lepidoptera: Gelechiidae). Canadian Entomologist, 11510: 1245-1252, 1983

Biology and parasitism of Trichogramma atopovirilia Oatman & Platner and Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) on eggs of Spodoptera frugiperda (J.E. Smith) (Lepidoptera, Noctuidae). Revista Brasileira de Entomologia 48(1): 119-126, 2004

The potential of Trichogramma pretiosum Riley Hymenoptera Trichogrammatidae as a biological control agent of lepidopterans of stored products Potencial de Trichogramma pretiosum Riley Hymenoptera Trichogrammatidae como agente de controle biologico de tracas Lepidoptera de produtos armazenados. Revista Brasileira de Armazenamento, 291: 62-68, 2004

Functional response of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) to Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) eggs: effect of host age. Anais da Sociedade Entomologica do Brasil 29(1): 85-93, 2000

Parasitization performance of Trichogramma spp. (Hym., Trichogrammatidae) reared on eggs of Sitotroga cerealella Oliver (Lep., Gelechiidae), stored at freezing and subfreezing conditions. Journal of Applied Entomology. September; 1226: 311-314, 1998

Parasitism capacity of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) reared under different temperatures on Bonagota salubricola (Meyrick) (Lepidoptera: Tortricidae) eggs. Neotropical Entomology 36(6): 926-931, 2008

Parasitism capacity of Trichogramma pretiosum Riley Hymenoptera Trichogrammatidae reared under different temperatures on Bonagota salubricola Meyrick Lepidoptera Tortricidae eggs. Neotropical Entomology 36.6 (November-December): 926-931, 2007