Life cycle and predation of Sycanus dichotomus (Hemiptera: Reduviidae) on Spodoptera frugiperda larvae

Asiri Singhamuni; AZIDAH ABDUL AZIZ; NURUL ASHIKIN ABDULLAH

doi:10.56093/ijas.v95i11.155179

Authors

Asiri Singhamuni Institute of Biological Science, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
Dr. Azidah Abdul Aziz Institute of Biological Sciences, Faculty of Science, University Malaya, 50603 Kuala Lumpur, Malaysia
Dr. Nurul Ashikin Abdullah

https://doi.org/10.56093/ijas.v95i11.155179

Keywords:

Life cycle, Maize,Predation, Spodoptera frugiperda, Sycanus dichotomus

Abstract

A laboratory experiment was carried out during 2023 and 2024 at the Department of Agriculture Laboratory, Sungai Burung, Tanjung Karang, Selangor, Malaysia. This study investigates the life cycle and predation ability of S. dichotomus on S. frugiperda larvae. Results revealed that S. dichotomus laid eggs in a cluster of 34-116 eggs, and the mean egg incubation period was 18.50+_0.27 days with a 12-25 day range. The nymph passed through five instars, and the respective mean nymphal durations of females and males were 107.16+_ 0.94 days and 106.13 +_ 1.07 days. Adult female longevity was 55.18+_0.41 days and adult male longevity was 55.12+_0.51 days. The effect of the development stages of S. dichotomus on predation ability was significantly different (F=258.84; df =6,399; p<0.001). In addition, the predation ability of S.dichotomus was also significantly different (F= 540.14; df =2,399;p<0.001) among the three larval categories of S. frugiperda. The data on the predation potentiality of S. dichotomus revealed that the adult females and males showed significantly higher (p<0.05) performances than their nymphal stages. This implies that adult S. dichotomus has the capacity and probability of becoming an efficient bio-control agent against the newly invaded invasive S. frugiperda in Malaysia's maize ecosystem.

Keywords: Life cycle, Maize, Predation, Spodoptera frugiperda, Sycanus dichotomus

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Author Biographies

Asiri Singhamuni, Institute of Biological Science, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia

Ph.D student

Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia

ORCID iD

0009-0005-1886-1460
Dr. Azidah Abdul Aziz, Institute of Biological Sciences, Faculty of Science, University Malaya, 50603 Kuala Lumpur, Malaysia

Dr. Azidah Abdul Aziz

Associate Researcher, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.

ORCID iD

0000-0003-3143- 199X
Dr. Nurul Ashikin Abdullah

Dr. Nurul Ashikin Abdullah

Senior Lecturer, Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.

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