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Saputro, Nurcahyo Widyo Daru
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Insect Species Composition in Local Durian Loji Plantation in Karawang, West Jawa Sabrina, Hanifa Khansa; Siriyah, Siti Latifatus; Saputro, Nurcahyo Widyo Daru
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9193

Abstract

Durian (Durio zibethinus) belong to a popular fruits in Southeast Asia and is widely distributed across various regions, particularly in Indonesia. Karawang regency, as one of the part of west java province, is one of the producers of local durian, known as durian loji. Successful durian cultivation is influenced by various biotic factors, among which insect biodiversity plays a critical role in pollination, pest control, and nutrient cycling. However, comprehensive studies on insect diversity in durian agroecosystems, particularly in Karawang, remain scarce. This study aimed to explore the insect community structure within Loji durian plantations to provide baseline data on species composition and ecological roles. Field sampling was conducted using three methods: sweep nets for aerial insects, beating sheets for foliage-dwelling species, and pitfall traps for ground-active arthropods. A total of 29 insect morphospecies from 9 orders were identified, including Coleoptera, Hymenoptera, Diptera, Dermaptera, Orthoptera, Hemiptera, Odonata, Mantodea, and Lepidoptera. Our findings show that all morphospecies occupied various trophic levels, including herbivores, predators, and decomposers. These findings highlight the ecological significance of insects in maintaining durian plantation health and suggest the need for sustainable farming practices to conserve beneficial species while managing pests. Further research should investigate the seasonal variations and the impact of agricultural practices on insect community structure and diversity.
Insect Diversity and Pest Attack Intensity of Leaf Beetle (Epilachna sparsa) on Purple Eggplant (Solanum melongena L.) with the Application of Botanical Pesticides Sopandi, Deni; Siriyah, Siti Latifatus; Laksono, Rommy Andhika; Saputro, Nurcahyo Widyo Daru
Jurnal Biologi Tropis Vol. 25 No. 4 (2025): Oktober-Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i4.10179

Abstract

The extensive use of synthetic pesticides has been shown to adversely affect ecosystems, including the diversity of insect populations. As a result, there is an increasing demand for environmentally sustainable pest control methods, such as botanical pesticides. This study aims to evaluate the diversity of insect species as well as the attack intensity of the leaf beetle (Epilachna sparsa) on purple eggplant (Solanum melongena L.) through the application of botanical pesticides. The research used a single-factor Group Random Design (RAK) with five replicates and five treatment groups: control, papaya leaf, neem leaf, a combination of papaya and neem leaves, and synthetic pesticide. Insect sampling was conducted using types of trap: pitfall traps, yellow sticky traps, and sweep nets, while the collected data were analyzed using analysis of variance, followed by a Least Significant Difference (LSD) test at the 5% significance level. The findings revealed that botanical pesticides did not have a significantly different effect on insect diversity or pest attack intensity, with the Shannon-Wiener diversity index ranging from 2.08–2.29, indicating a moderate level of diversity (1 < H’ < 3). Notably, the treatment using papaya leaf extract resulted in the lowest damage intensity by leaf beetle (E. sparsa), ranging from 15.83% to 20.83%. These results suggest that botanical pesticides, particularly papaya leaf extract, can reduce pest damage while maintaining ecological balance, as reflected in the shifts in abundance of various insect orders and their population dynamics.
Co-Authors Laksono, Rommy Andhika Sabrina, Hanifa Khansa Siriyah, Siti Latifatus Sopandi, Deni