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INDONESIA
Jurnal Entomologi Indonesia
Published by Perhimpunan Entomologi Indonesia
ISSN : 18297722     EISSN : 20890257     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Jurnal Entomologi Indonesia (JEI) publishes original research papers and short communications that covers the basic and applied aspect of insects and mites or other arthropods in agriculture, forestry, human and animal health, and natural resources and environmental management. The journal is published by Perhimpunan Entomologi Indonesia (Entomological Society of Indonesia). JEI was first published at the beginning of 2004 with twice per year in frequency on March and September. Since 2015, Jurnal Entomologi Indonesia has been published three times per year on March, July, and November.
Arjuna Subject : -
Articles 422 Documents
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Dampak konsentrasi subletal dan frekuensi aplikasi insektisida fipronil terhadap dinamika populasi wereng batang cokelat (WBC) (Nilaparvata lugens Stal.) pada padi varietas ir64 dan ciherang: The effect of sublethal concentrations and application frequency of fipronil insecticide on the population of brown planthopper (Nilaparvata lugens Stal.) on rice varieties IR64 and Ciherang Awaluddin; Siti Anima Hisein, Waode; Nuriadi; Efendi, Siska; Dadang; Anwar, Ruly; Giyanto, Giyanto
Jurnal Entomologi Indonesia Vol 23 No 1 (2026)
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.1.39

Abstract

Fipronil merupakan insektisida yang banyak digunakan dalam pengendalian hama wereng batang cokelat (WBC) (Nilaparvata lugens Stal.) di Indonesia. Penggunaan fipronil di tingkat petani seringkali tidak sesuai anjuran sehingga menimbulkan kekhawatiran terjadinya resurjensi. Penelitian ini bertujuan untuk mengkaji pengaruh konsentrasi subletal dan frekuensi aplikasi insektisida fipronil terhadap peningkatan populasi WBC pada dua varietas padi, yaitu IR64 dan Ciherang. Sampel WBC yang digunakan berasal dari Kabupaten Karawang, Jawa Barat. Penelitian terdiri atas uji toksisitas untuk menentukan konsentrasi subletal fipronil, yaitu pada tingkat LC15, LC25, dan LC40, air sebagai kontrol. Masing-masing perlakuan diaplikasikan sebanyak 1, 2, dan 3 kali dengan selang waktu 5 hari antar aplikasi. Hasil penelitian menunjukkan bahwa paparan konsentrasi subletal (LC15, LC25, dan LC40) memicu fenomena hormoligosis yang ditandai dengan peningkatan signifikan pada persentase penetasan telur di semua tingkat konsentrasi dibandingkan dengan kontrol. Persentase penetasan telur tertinggi terdapat pada perlakuan LC15  dengan varietas Ciherang, yakni 82,55%. Meskipun peningkatan konsentrasi dan frekuensi aplikasi (1–3 kali) secara linear meningkatkan mortalitas nimfa hingga 94,44% pada perlakuan LC40, namun pada dosis rendah LC15, peningkatan frekuensi aplikasi justru menstimulasi lonjakan populasi nimfa F1. Populasi nimfa tertinggi terdapat pada varietas Ciherang dengan perlakuan LC15 dua kali aplikasi, yakni 1197,33 individu. Temuan ini mengonfirmasi bahwa aplikasi fipronil pada tingkat subletal, terutama pada varietas rentan, tidak hanya gagal mengendalikan WBC tetapi justru memicu resurjensi melalui peningkatan keberhasilan penetasan telur dan stimulasi reproduksi generasi berikutnya.
Morphometric variations of Apis dorsata Fabricius (Insecta: Hymnoptera: Apidae) from South Sumatra, Belitung, and West Kalimantan: Variasi morfometrik Apis dorsata Fabricius (Insecta: Hymnoptera: Apidae) dari Sumatera Selatan, Belitung, dan Kalimantan Barat Besse Fatimah; Raffiudin, Rika; Atmowidi, Tri; Savira, Aulia; Latif, Astuti; Priawandiputra, Windra
Jurnal Entomologi Indonesia Vol 23 No 1 (2026)
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.23.1.49

Abstract

Apis dorsata Fabricius is a giant forest honey bee with a wide distribution that includes Indonesia. South Sumatra, Belitung, and West Kalimantan exhibit distinct geographic and ecological characteristics that may influence the morphometric variations of this species. This study aimed to analyze the similarities and differences across various morphometric parameters of A. dorsata colonies from these three regions. A traditional morphometric approach was conducted to measure 23 morphometric parameters. A total of 120 individuals from 12 A. dorsata colonies originating from South Sumatra, Belitung, and West Kalimantan were examined. The results indicated that 12 of the 23 parameters (52.2%) differed significantly among populations. Populations from South Sumatra generally exhibited larger structural dimensions across several head, thorax, and wing parameters, whereas the Belitung populations demonstrated higher values for proboscis length and antennal socket distance. Multivariate analysis (NMDS and ANOSIM) revealed statistically significant, albeit weak, differentiation among the populations. Overall, these findings indicate the presence of localized morphometric variations across the islands, although the degree of morphological differentiation remains relatively low.

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