Preference, population development, and molecular characteristics of Spodoptera exigua (Lepidoptera: Noctuidae) on shallot cultivars: A field trial scale
##plugins.themes.bootstrap3.article.main##
Abstract
Abstract. Supartha IW, Susila IW, Sumiartha IK, Rauf A, Cruz LBDC, Yudha IKW, Utama IWEK, Wiradana PA. 2021. Preference, population development, and molecular characteristics of Spodoptera exigua (Lepidoptera: Noctuidae) on shallot cultivars: A field trial scale. Biodiversitas 23: 783-792. The beet armyworm, Spodoptera exigua Hubner (Lepidoptera: Noctuidae), is a polyphagous insect that is the main pest and is responsible for the decline in shallot production in Indonesia. This study aims to (i) analyze preferences; (ii) colonization time; (iii) population development; (iv) attack of armyworms according to plant phenology in the shallot cultivars; and (v) identification species of armyworms. The research was conducted in Bangli Village, Tabanan Regency, Bali Province, Indonesia. The research design used was a randomized block design with the treatment of five shallot cultivars and five replications. Molecular analysis of armyworm larvae was carried out using the Polymerase Chain Reaction (PCR) method using forward Lep_F1 and reverse Lep_R1 primers at the Cytochrome Oxidase Subunit I (COI) gene. Our results indicate that the period of adult pest infestation has been seen since the emergence of plants, namely 7 days after planting (dap). The colonization period begins at 21 (dap), when plants and larvae begin to grow. The development of the egg and larva population was seen when the plants totaled 21 (dap) (for eggs) and 28 dap (for larvae). The most preferred shallot cultivars are "Bali Karet" and "Bima Brebes". Armyworm larvae, including S. exigua, were identified as related to the same group as isolate larvae from China, India, Pakistan, Thailand, and Japan. These findings indicated that S. exigua preferred the two cultivars of shallots in the fields and emerged at 21 dap. This shows that insect management activities must be carried out systematically both when the shallots plants are young, pre- and post-harvest. Control with natural enemies can also be done for further research.
##plugins.themes.bootstrap3.article.details##
Most read articles by the same author(s)
- I WAYAN SUPARTHA, I KADEK WISMA YUDHA, PUTU ANGGA WIRADANA, I WAYAN SUSILA, Response of parasitoids to invasive pest Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on cassava crop in Bali, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 21 No. 10 (2020)
- ANAK AGUNG AYU PUTRI PERMATASARI, I WAYAN ROSIANA, PUTU ANGGA WIRADANA, MIA DWI LESTARI, NI KOMANG WIDIASTUTI, SETYO BUDI KURNIAWAN, I GEDE WIDHIANTARA, Extraction and characterization of sodium alginate from three brown algae collected from Sanur Coastal Waters, Bali as biopolymer agent , Biodiversitas Journal of Biological Diversity: Vol. 23 No. 3 (2022)
- SRI UTAMI, HERMANU TRIWIDODO, PUDJIANTO PUDJIANTO, AUNU RAUF, NOOR FARIKHAH HANEDA, Population dynamics of Arthroschista hilaralis pest and its parasitoid diversity in various jabon (Anthocephalus cadamba) cropping patterns in South Sumatra, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 19 No. 1 (2018)
- MAYANDA LIA, AUNU RAUF, DADAN HINDAYANA, Comparisons of the composition of spider assemblages in three vegetation habitats in Bogor, West Java, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 23 No. 1 (2022)
- GUSTI NGURAH SUTAPA, I WAYAN SUPARTHA, I NYOMAN WIJAYA, I KETUT PUJA, MUKH. SYAIFUDIN, The effectiveness of 60Co gamma-ray exposure to the reproductive systems of rat (Rattus argentiventer) as sterile male technique , Biodiversitas Journal of Biological Diversity: Vol. 21 No. 8 (2020)
- I WAYAN SUPARTHA, DWI WIDANINGSIH, I WAYAN SUSILA, I KADEK WISMA YUDHA, I WAYAN EKA KARYA UTAMA, PUTU ANGGA WIRADANA, Range of host plants, spatial distribution, and insect predator of Phenacoccus manihoti (Hemiptera: Pseudococcidae) as an emerging pest of cassava plants in Bali, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 23 No. 6 (2022)
- I GEDE WIDHIANTARA, I MADE WISNU ADHI PUTRA, NI KADEK DWIPAYANI LESTARI, PUTU ANGGA WIRADANA, ANAK AGUNG AYU PUTRI PERMATASARI, NI KADEK YUNITA SARI, NI PUTU LIDYA WINDARISTA, GLADYS ELIZABETH, TEGUH HARI SUCIPTO, Ethnopharmacological study of medicinal plants used on usadha rare remedies in Bali Province, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 25 No. 12 (2024)
- I WAYAN EKA KARYA UTAMA, I WAYAN SUPARTHA, KETUT AYU YULIADHI, I PUTU SUDIARTA, I KADEK WISMA YUDHA, SAHABUDDIN SALEH, SRI WAHYUNI, PUTU ANGGA WIRADANA, Genetic structure and current distribution of Liriomyza huidobrensis, L. sativae and L. trifolii (Diptera: Agromyzidae) on vegetable crops in Bali, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 25 No. 5 (2024)
- I NYOMAN GEDE USTRIYANA, I WAYAN SUPARTHA, I WAYAN SUSILA, KETUT AYU YULIADHI, I PUTU SUDIARTA, ANIS SYAHIRAH BINTI MOKHTAR, SYARI BIN JAMIAN, BINTAN MUTIAH, I WAYAN SANDIKA YASA, I WAYAN EKA KARYA UTAMA, I KADEK WISMA YUDHA, Mapping the potential of parasitoid species for biological control of Spodoptera frugiperda in Bali, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 25 No. 10 (2024)