Neotropical Entomology (2021) 50, 453-461

Ana Paula de Queiroz, Adeney de Freitas Bueno, Antônio Ricardo Panizzi and Bruna Magda Favetti (2021)
Intrinsic interspecific competition between Telenomus podisi and Trissolcus teretis (Hymenoptera: Scelionidae)
Neotropical Entomology 50 (3), 453-461
Abstract: The competition between Telenomus podisi Ashmead and Trissolcus teretis (Johnson) parasitizing eggs of Diceraeus melacanthus (Dallas) and Euschistus heros (Fabricius) was studied in three different laboratory bioassays to gather knowledge in order to improve stink bug management and to strengthen the preservation of naturally occurring parasitoid species. The impact of parasitoid sequence and time intervals (4 to 192 h) between parasitoid species was evaluated. Competition of Te. podisi and Tr. teretis for the same host favored the parasitoid encountering the egg host first, as it usually outcompetes the second parasitoid. We conclude that it is unwarranted in a short-term goal to release both species together in augmentative biological control programs since the repeated release of Te. podisi led to higher parasitism than any other studied variation of parasitoid sequence. However, simultaneous release of multiple species could be important to help the preservation of the diversity of scelionids in the agroecosystem, a hypothesis that needs to be further investigated in future research.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Antônio R. Panizzi, Bruna M. Favetti

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Euschistus heros		Brazil (south)
Telenomus podisi (parasitoid)	Euschistus heros		Brazil (south)
Trissolcus teretis (parasitoid)	Euschistus heros		Brazil (south)