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Fransina Latumahina
Fakutas Pertanian Jurusan Kehutanan, Universitas Pattimura Ambon
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High Biodiversity and Low Dominance in Insect Species on Marsegu Island: A Case Study Berlindus Savdurin; Fransina Latumahina; Cornelia Wattimena
Academia Open Vol 8 No 2 (2023): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.6625

Abstract

This study aimed to assess the diversity and abundance of insect species in the coastal forest of Marsegu Island in the Western Seram Regency. The data was collected using an exploratory method, which involved direct observation and sampling in the field between October 2020 and the completion of the study. A total of 321 individuals representing 20 species from six orders (Orthoptera, Hemiptera, Lepidoptera, Coleoptera, Diptera, Aranae) were identified, distributed across 20 families. The Diptera family Muscidae was most commonly found. The insect diversity index (H') was 4.371, indicating high species diversity within the region. The evenness index (E) was 0.931, suggesting that no single family dominated the population due to a balanced ecosystem. The dominance index was 0.155, implying low dominance and equitable abundance among species. The findings emphasize the importance of Marsegu Island's ecological balance, which may be threatened by chemical interventions. It is crucial to conserve these diverse and abundant insect communities, which play a significant role in maintaining ecosystem health and complexity. Highlights: The study revealed a high diversity of insect species (H' index = 4.371) on Marsegu Island, highlighting its rich ecological complexity. The even distribution of insect species (E index = 0.931) underlines the balanced ecosystem, free from chemical interventions. Despite the high diversity, no species dominates the ecosystem, as reflected by a low dominance index (0.155), emphasizing the importance of species equality in maintaining ecosystem health. Keywords: Insect Diversity, Marsegu Island, Ecosystem Balance, Species Abundance, Dominance Index.
Efficacy of Annona muricata (Soursop) Leaf Extracts on Locust Mortality: An Environmentally Friendly Approach to Pest Control in Pterocarpus indicus Cultivation Rindiyani Bazargan; Fransina Latumahina; Cornelia Wattimena
Academia Open Vol 8 No 2 (2023): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.6626

Abstract

This research aimed to examine the effectiveness of different concentrations of soursop (Annona muricata) leaf extracts on locust mortality in Pterocarpus indicus plants. A completely randomized design was used involving various concentrations of soursop leaf extracts (0, 250g, 500g, 750g, 1000g per liter of water), each tested in triplicate. Each experiment included 20 locusts, with a total of 300 locusts required for all tests. The soursop leaf extract was prepared by blending fresh leaves with water and filtering, then applied using a sprayer at six-hour intervals. Data analysis was performed using the analysis of variance (ANOVA) method. The results demonstrated that soursop leaf extract significantly affected locust mortality across all concentrations, with even the lowest concentration (250g/L) proving effective. These findings suggest that soursop leaf extract represents a potent, natural biopesticide for locust control, underlining its importance for farmers and offering a sustainable and environmentally friendly solution to pest management in Pterocarpus indicus cultivation. Highlights: Soursop (Annona muricata) leaf extract demonstrates significant effectiveness as a biopesticide against locusts in Pterocarpus indicus plants. Even the lowest concentration (250g/L) of soursop leaf extract can effectively control locust populations, indicating a high potency. The use of soursop leaf extract as a biopesticide offers a sustainable, environmentally friendly approach to pest management in agricultural settings. Keywords: Annona muricata, Soursop Leaf Extract, Biopesticide, Locust Mortality, Pterocarpus indicus Cultivation.
Co-Authors Berlindus Savdurin Cornelia Wattimena Rindiyani Bazargan