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Damascena AP, de Carvalho VR, Ribeiro MF, Horta AB, Monteiro de Castro e Castro B, Zanuncio AJV, Wilcken CF, Zanuncio JC, Wilcken SRS. Steinernema diaprepesi (Rhabditida: Steinernematidae) parasitizing Gonipterus platensis (Coleoptera: Curculionidae). ROYAL SOCIETY OPEN SCIENCE 2020; 7:200282. [PMID: 32968508 PMCID: PMC7481718 DOI: 10.1098/rsos.200282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/22/2020] [Indexed: 06/02/2023]
Abstract
Entomopathogenic nematodes (EPNs) can control pests due to mutualistic association with bacteria that reproduce and kill the host from septicemia, making the environment favourable for nematode development and reproduction. The objective of this study was to identify an EPN isolate collected in eucalyptus cultivation and to determine its pathogenicity with regard to Gonipterus platensis Marelli (Coleoptera: Curculionidae). Four steel-mesh traps with two seventh-instar Galleria mellonella larvae were buried 5 cm deep in the soil in a commercial Eucalyptus plantation. After 7 days, the traps were packed in plastic bags and transported to laboratory to isolate the EPNs using White traps. The obtained nematodes were multiplied in G. mellonella larvae and identified by sequencing their D2/D3 expansion of the 28S rDNA region by polymerase chain reaction (PCR) and specific primers for ITS regions. Steinernema diaprepesi was identified and inoculated into G. platensis pupae at doses of 500, 1000 and 5000 infective juveniles (IJs) to determine its pathogenicity to this pest. At 8 days after inoculation, the mortality rate of the G. platensis pupae was 80% with the lowest concentration and 100% with the others. The emergence of nematodes and the rapid degradation of G. platensis pupae were observed in those inoculated with IJs. The pathogenicity to the G. platensis pupae indicates potential for using this nematode in the integrated management of this insect.
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Affiliation(s)
- Alixelhe Pacheco Damascena
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas, Departamento de Proteção Vegetal, Departamento de Proteção Vegetal, 18610-034, Botucatu, São Paulo, Brazil
| | - Vanessa Rafaela de Carvalho
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas, Departamento de Proteção Vegetal, Departamento de Proteção Vegetal, 18610-034, Botucatu, São Paulo, Brazil
| | - Murilo Fonseca Ribeiro
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas, Departamento de Proteção Vegetal, Departamento de Proteção Vegetal, 18610-034, Botucatu, São Paulo, Brazil
| | - André Ballerini Horta
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas, Departamento de Proteção Vegetal, Departamento de Proteção Vegetal, 18610-034, Botucatu, São Paulo, Brazil
| | | | | | - Carlos Frederico Wilcken
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas, Departamento de Proteção Vegetal, Departamento de Proteção Vegetal, 18610-034, Botucatu, São Paulo, Brazil
| | - José Cola Zanuncio
- Departamento de Entomologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900Brazil
| | - Silvia Renata Siciliano Wilcken
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agronômicas, Departamento de Proteção Vegetal, Departamento de Proteção Vegetal, 18610-034, Botucatu, São Paulo, Brazil
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Microbial Control of Invasive Forest Pests with Entomopathogenic Fungi: A Review of the Current Situation. INSECTS 2019; 10:insects10100341. [PMID: 31614772 PMCID: PMC6835771 DOI: 10.3390/insects10100341] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/08/2019] [Accepted: 10/10/2019] [Indexed: 11/19/2022]
Abstract
The health of the forestlands of the world is impacted by a number of insect pests and some of them cause significant damage with serious economic and environmental implications. Whether it is damage of the North American cypress aphid in South America and Africa, or the destruction of maple trees in North America by the Asian long horned beetle, invasive forest pests are a major problem in many parts of the world. Several studies explored microbial control opportunities of invasive forest pests with entomopathogenic bacteria, fungi, and viruses, and some are successfully utilized as a part of integrated forest pest management programs around the world. This manuscript discusses some invasive pests and the status of their microbial control around the world with entomopathogenic fungi.
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