Determination of the efficacy of some entomopathogenic nematodes against Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) under laboratory conditions

Galip KAŞKAVALCI; Sevgi TÜRKÖZ

doi:https://doi.org/10.16970/ted.92606

Article Details

Determination of the efficacy of some entomopathogenic nematodes against Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) under laboratory conditions

Authors:

Galip KAŞKAVALCI | Sevgi TÜRKÖZ

Publisher:

Türkiye Entomoloji Derneği

Journal:

Turkish Journal of Entomology 2016 Vol.40 Issue 2, pp.0-0

Document Type:

Article

Publication Date:

6/2016

Document Language:

Turkish

Document ID (Org No.):

2000801360

Frequency:

Quarterly

eISSN:

2536-491X

pISSN:

1010-6960

DOI:

https://doi.org/10.16970/ted.92606

Abstract:

 

The tomato leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) which was first detected in Izmir Province, Turkey in 2009 has spread quickly and has become the major pest in tomato producing areas. The efficacy of three different entomopathogenic nematode (EPN) species isolates (from e-nema® GmbH Schwentinental, Germany), Heterorhabditis bacteriophora (Poinar), Steinernema carpocapsae (Weiser) and Steinernema feltiae (Filipjev) was investigated against T. absoluta during 2013-2014 under laboratory conditions. The EPNs were applied with different inoculation rates (1, 2, 5, 10, 15, 20, 25 and 40 infective juveniles per larva) for each species to the third instar larvae of T. absoluta outside the leaves. The mortality rates for H. bacteriophora, S. carpocapsae and S. feltiae were found between 21.2 - 74.2%, 28.8 - 99.4% and 17.5 - 95.2%, respectively. According to the results, S. carpocapsae and S. feltiae caused similar mortalities at the given inoculation rates while H. bacteriophora had lower efficacy compared to those two species. The values of LD50 for H. bacteriophora, S. carpocapsae and S. feltiae were 21.67, 7.13 and 6.25 infective juveniles per larva, respectively. Based on these data, S. feltiae was the most efficient nematode species, and was then applied against the larva of T. absoluta inside the mines and pupae. However, S. feltiae only caused low mortality of larvae both inside mines (19%) and the pupae (7%). These results revealed that EPN have good potential for the control of T. absoluta larvae outside the leaves and should be studied further.

Article Details

Determination of the efficacy of some entomopathogenic nematodes against Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) under laboratory conditions

Authors: Galip KAŞKAVALCI | Sevgi TÜRKÖZ

Publisher: Türkiye Entomoloji Derneği

Journal: Turkish Journal of Entomology 2016 Vol.40 Issue 2, pp.0-0

Document Type: Article

Publication Date: 6/2016

Document Language: Turkish

Document ID (Org No.): 2000801360

Frequency: Quarterly

eISSN: 2536-491X

pISSN: 1010-6960

DOI: https://doi.org/10.16970/ted.92606

Issues

Authors:

Galip KAŞKAVALCI | Sevgi TÜRKÖZ

Publisher:

Türkiye Entomoloji Derneği

Journal:

Turkish Journal of Entomology 2016 Vol.40 Issue 2, pp.0-0

Document Type:

Article

Publication Date:

6/2016

Document Language:

Turkish

Document ID (Org No.):

2000801360

Frequency:

Quarterly

eISSN:

2536-491X

pISSN:

1010-6960

DOI:

https://doi.org/10.16970/ted.92606