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The potential of Chrysoperla rufilabris and Doru taeniatum as agents for dispersal of Spodoptera frugiperda nucleopolyhedrovirus in maize

The potential of Chrysoperla rufilabris and Doru taeniatum as agents for dispersal of Spodoptera frugiperda nucleopolyhedrovirus in maize
The potential of Chrysoperla rufilabris and Doru taeniatum as agents for dispersal of Spodoptera frugiperda nucleopolyhedrovirus in maize
The behaviour of two abundant predators in Mesoamerican maize crops, Chrysoperla rufilabris larvae and Doru taeniatum adults, towards healthy and nucleopolyhedrovirus-infected Spodoptera frugiperda larvae was compared. C. rufilabris did not discriminate between healthy and virus-infected prey, although the mean search time was approximately two times longer towards virus-infected larvae. In contrast, D. taeniatum directed a greater proportion of their attacks towards virus-infected prey but there was no significant difference in the search time. Prey consumption time did not differ significantly for each type of prey by either predator, although prey consumption was much faster in D. taeniatum. Viable virus was detected in D. taeniatum faeces up to 3 d after feeding on infected S. frugiperda larvae, whereas virus was inactivated in the gut of C. rufilabris. Both predators were shown to have acidic guts. A field experiment demonstrated that D. taeniatum that had fed on infected prey could contaminate foliage resulting in the transmission of the disease at a low prevalence (4.7%) to S. frugiperda larvae in a field maize crop.
search time, prey consumption, neuroptera, dermaptera, lepidoptera, baculovirus, virus dispersal
0013-8703
353-359
Castillejos, Vasty.
7cc1a785-6716-42df-8a53-6ced41e05582
Garcia, Luis.
dc6c312f-eafd-4ea2-a908-9d0ecb274636
Cisneros, Juan
2fe338a3-8226-43c2-8771-307a93782972
Goulson, Dave
50da43d9-00ee-46c3-8107-fa8c67f7f4b5
Cave, Ronald
2c967d54-edc3-446d-8b45-c3fc86a9b025
Caballero, Primitivo
5ba90514-a6d2-4297-b494-29b678ccfe35
Williams, Trevor
6d85fc68-c1db-45fc-9bd9-0293d2c90a23
Castillejos, Vasty.
7cc1a785-6716-42df-8a53-6ced41e05582
Garcia, Luis.
dc6c312f-eafd-4ea2-a908-9d0ecb274636
Cisneros, Juan
2fe338a3-8226-43c2-8771-307a93782972
Goulson, Dave
50da43d9-00ee-46c3-8107-fa8c67f7f4b5
Cave, Ronald
2c967d54-edc3-446d-8b45-c3fc86a9b025
Caballero, Primitivo
5ba90514-a6d2-4297-b494-29b678ccfe35
Williams, Trevor
6d85fc68-c1db-45fc-9bd9-0293d2c90a23

Castillejos, Vasty., Garcia, Luis., Cisneros, Juan, Goulson, Dave, Cave, Ronald, Caballero, Primitivo and Williams, Trevor (2001) The potential of Chrysoperla rufilabris and Doru taeniatum as agents for dispersal of Spodoptera frugiperda nucleopolyhedrovirus in maize. Entomologia Experimentalis et Applicata, 98 (3), 353-359. (doi:10.1023/A:1018997428809).

Record type: Article

Abstract

The behaviour of two abundant predators in Mesoamerican maize crops, Chrysoperla rufilabris larvae and Doru taeniatum adults, towards healthy and nucleopolyhedrovirus-infected Spodoptera frugiperda larvae was compared. C. rufilabris did not discriminate between healthy and virus-infected prey, although the mean search time was approximately two times longer towards virus-infected larvae. In contrast, D. taeniatum directed a greater proportion of their attacks towards virus-infected prey but there was no significant difference in the search time. Prey consumption time did not differ significantly for each type of prey by either predator, although prey consumption was much faster in D. taeniatum. Viable virus was detected in D. taeniatum faeces up to 3 d after feeding on infected S. frugiperda larvae, whereas virus was inactivated in the gut of C. rufilabris. Both predators were shown to have acidic guts. A field experiment demonstrated that D. taeniatum that had fed on infected prey could contaminate foliage resulting in the transmission of the disease at a low prevalence (4.7%) to S. frugiperda larvae in a field maize crop.

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More information

Published date: March 2001
Keywords: search time, prey consumption, neuroptera, dermaptera, lepidoptera, baculovirus, virus dispersal

Identifiers

Local EPrints ID: 57702
URI: https://eprints.soton.ac.uk/id/eprint/57702
ISSN: 0013-8703
PURE UUID: 2103374f-25fe-4a0d-aae5-e40d25df7639

Catalogue record

Date deposited: 08 Aug 2008
Last modified: 13 Mar 2019 20:33

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