Loader

Speakers - Josué Sant’Ana

Type of the Presentation:  Short lecture

 

TRAINING PARASITOIDS AS A STRATEGY TO ENHANCE BIOCONTROL

 

Josué Sant’Ana1*, Roberta Tognon2, Camila Vargas3, Luiza Redaelli4

 

1  UFRGS; josue.santana@ufrgs.br

2  UFRGS; roberta.tognon@ufrgs.br

3   UFRGS; teccamila@gmail.com

4   UFRGS; luredael@ufrgs.br

*  Correspondence: josue.santana@ufrgs.br

 

The chemical ecology of parasitoids focused on the use of behavioral chemical manipulation (training) as a strategy to increase parasitism in laboratory and/or field is a new and interesting research subject. Learning play a key role in parasitoid behavior and a considerable degree of brain plasticity, explained as the competence of one organism to change its physiology in response to environment conditions, manifested by an individual insect, may have a significant impact on evolutionary changes in host use. Adjusting their behavior to certain chemical compounds, would help parasitoids to take advantage for finding easier suitable hosts. Based on these evidences, our research group, from Ethology and Insect Chemical Ecology Laboratory (EICEL) at Federal University of Rio Grande do Sul, has dedicated efforts to understand the learning and memory abilities of some parasitoids, such as Telenomus podisus (Hymenoptera: Scelionidae), Trissolcus basalis (Hymenoptera: Scelionidae), Trichogramma pretiosum (Hymenoptera: Trichogrammatidae) and Diachasmimorpha longicaudata (Hymenoptera: Braconidae). The rational management of agricultural pests depends on an in-depth knowledge of the interactions between natural enemies, hosts/preys and plants. Therefore, understanding the parasitoids search strategies and factors that can change the choice process (such as learning) might be one of the keys to enhance biological control in a near future. This lecture intends to show recent results obtained by the EICEL research group, providing a debate on this topic.