Effects of parasitoid and host age on the parasitism of Trichogramma pretiosum on eggs of Anticarsia gemmatalis
| Autor: | Cintia Oliveira Costa, A. P. Queiroz, Adeney de Freitas Bueno, G. V. Silva, Bruna Magda Favetti |
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| Přispěvatelé: | UNIVERSIDADE FEDERAL DO PARANÁ, DEPARTAMENTO DE ZOOLOGIA, CURITIBA, CENTRO UNIVERSITÁRIO FILADÉLFIA, LONDRINA, INSTITUTO AGRONÔMICO DO PARANÁ, LONDRINA, ADENEY DE FREITAS BUENO, CNPSO. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
biology
Host (biology) fungi Lepidoptera-pest General Engineering Biological pest control biological control Zoology Parasitism Controle Biológico biology.organism_classification Lepidóptero Parasitoid Lepidoptera Anticarsia gemmatalis QL1-991 embryonic development Biological control embryonic structures egg parasitoid Trichogramma pretiosum Parasitismo Embryonic structures Sex ratio |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA Revista Brasileira de Entomologia v.64 n.2 2020 Revista brasileira de entomologia Sociedade Brasileira De Entomologia (SBE) instacron:SBE Revista Brasileira de Entomologia, Vol 64, Iss 2 (2020) Revista Brasileira de Entomologia, Volume: 64, Issue: 2, Article number: e2019105, Published: 09 APR 2020 |
| Popis: | The ages of parasitoid females and their hosts can have substantial effects on parasitism and parasitoid efficacy. This relationship has been investigated over the last few decades and found to vary among species. To our knowledge, it was virtually unknown for Trichogramma pretiosum wasps that parasitize Anticarsia gemmatalis eggs. Therefore, the influence of parasitoid and host age on the parasitism of T. pretiosum on eggs of A. gemmatalis was here evaluated in three independent bioassays. Neither the number of parasitized eggs nor that of emerged parasitoids differed between T. pretiosum females of different age. The number of parasitoids per egg and the sex ratio were higher for 5-day-old females. Regarding host age, the number of parasitized eggs was highest for A. gemmatalis eggs aged 24 h (9.60), followed by eggs aged 48 h (1.00), while no parasitism was observed for eggs aged 72 h. The number of parasitoids per egg and sex ratio were not influenced by host age. Preference was significantly higher for host eggs aged 24 h (79.67%), followed by eggs aged 48 h (16.99%) and 72 h (3.33%). Accordingly to these results, the key challenge for a successful T. pretiosum release to control A. gemmatalis in the field is to synchronize the presence of up to 5-day-old adults with the most susceptible phase of the host eggs (1 day). |
| Databáze: | OpenAIRE |
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