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Looking on Indigo Flycatcher (Eumyas indigo) Hunting Behaviour: Time, Ecology, and Habitat Preference Kurnianto, Agung Sih; Sugiharto, Arief; Kurniawan, Nia
Journal of Tropical Life Science Vol 10, No 1 (2020)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.10.01.07

Abstract

Hunting is the main support of life for the insectivores bird of the world. Through an understanding of Indigo Flycatcher behavior character, we compiled new information for the daily behavior of Indigo Flycatcher and Muscicapidae family in general. The study was conducted at 3 periods to interpret the effect of different seasons conditions: the first period (rainy season, 1 – 30 January 2015), the second period (dry season, 1-30 June 2015), the third period (transition season, 1 – 30 November 2015). The research station covers 3 research points (A=edge of the forest, b = garbage dump, c = dense forest. A canonical correspondence (CCA) was used to understand the significance of the interaction between the abiotic factors and season. Based on the observations, the transition of the season became the most preferred moment for Indigo Flycatcher. Indigo flycatcher hunts in a group, both singular and mixed. Point B is the most common location of Indigo Flycatcher hunting activity.
ASSESSMENT OF RIPARIAN VEGETATION PATTERN ALONG ALISTA HILLY RIVER BASIN Parmawati, Rita; Rokani, Lutvita Erya; Yakub, Arham; Riarmanto, Arief Kurnia; Pertiwi, Maya; Hidayat, Herman; Kurnianto, Agung Sih
Journal of Tropical Life Science Vol 8, No 3 (2018)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.08.03.05

Abstract

Riparians are undergoing extensive reductions and changes in their natural composition into agricultural and urban area. The relationship between the vegetation distribution pattern and the riparian topography factor has been assumed to typically represent a biome-specific or vegetation-specific constant. This study aim is to analyze the vegetation distribution pattern with topography along Alista river in Dau District, Malang. We surveyed 3 stations that represent a zone of edge gradient between the river and the mainland: levee, mid-flood, and slough. We used the wetland classification (Obligate - OBL; Facultative Wetland-FACW; Facultative Upland (FACU); and Upland (UPL) for each species found from various sources. we observed that facultative upland plants have a broad dominance. Mid-floodplain and slough dominated by typical upland species. Although Levee widely consisted of by upland plants, this area has one distinctive obligate species: Equisetum. The presence of OBL species in the levee and mid-floodplain indicate the area is receiving more frequent floods than other areas.
Microhabitat Assessment of Mangrove Pit Viper Cryptelytrops purpureomaculatus in Restricted Mangrove Area, Dumai, Riau Province, Sumatera Kurniawan, Nia; Priambodo, Bagus; Nugraha, Fitra Arya Dwi; Maulidi, Andri; Kurnianto, Agung Sih
Journal of Tropical Life Science Vol 7, No 2 (2017)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.07.02.01

Abstract

Bandar Bakau is a mangrove conservation area with approximately 20 ha that preserves many kinds of fauna, including Mangrove Pit Viper Cryptelytrops purpureomaculatus. However, this species and its habitat are still poorly studied in Indonesia, particularly Sumatera island, despite it has a wide distribution in Southeast Asian countries. The main purpose of this study is to evaluate the microhabitat of Mangrove Pit Viper C. purpureomaculatus that found at a restricted mangrove area in Dumai, Riau Province. Visual Encounter Survey (VES) and deep interview methods were used in this study. The survey found six individuals of C. purpureomaculatus that mostly basking on the Avicennia marina and artificial building. Although Bandar Bakau is a tourism object, but no snakebite cases were found.
The Ecological Character of Water-Bioindicator Macroinvertebrates on Various Agricultural Management: Ecology of Water-Bioindicators in Agriculture kurnianto, Agung sih; Septiadi, Luhur; Hamidah, Wanda; Magvira, Nur Laila; Sholikah, Ummi
Journal of Tropical Life Science Vol. 14 No. 3 (2024): In Press
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.14.03.12

Abstract

In Indonesia, horticulture is a crucial part of agriculture, heavily reliant on agrochemicals. This study in East Java's Jember and Bondowoso regencies compared conventional and organic farming methods, focusing on their effects on aquatic macroinvertebrates as bioindicators. Research included sites practicing conventional horticulture (cabbage, chili) and organic rice farming. Measurements of water current, pH, conductivity, dissolved oxygen, and temperature were taken, along with macroinvertebrate sampling. Significant differences were found in pH, conductivity, and water current, but not in dissolved oxygen and temperature. Organic farming showed higher macroinvertebrate diversity and lower dominance, especially the Baetidae family. While BMWP-ASPT and EPT scores were similar across methods, organic farming rated unpolluted in biotilik scores. Hierarchical cluster analysis, PCA, and CCA revealed factors influencing the ecological impacts of farming practices. The study underscores how different agricultural methods affect macroinvertebrate diversity, highlighting their role as environmental indicators. This reflects the diverse ecological impacts of agricultural management practices.
The Ecological Character of Water-Bioindicator Macroinvertebrates on Various Agricultural Management: Ecology of Water-Bioindicators in Agriculture kurnianto, Agung sih; Septiadi, Luhur; Hamidah, Wanda; Magvira, Nur Laila; Sholikah, Ummi
Journal of Tropical Life Science Vol. 14 No. 3 (2024)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.14.03.12

Abstract

In Indonesia, horticulture is a crucial part of agriculture, heavily reliant on agrochemicals. This study in East Java's Jember and Bondowoso regencies compared conventional and organic farming methods, focusing on their effects on aquatic macroinvertebrates as bioindicators. Research included sites practicing conventional horticulture (cabbage, chili) and organic rice farming. Measurements of water current, pH, conductivity, dissolved oxygen, and temperature were taken, along with macroinvertebrate sampling. Significant differences were found in pH, conductivity, and water current, but not in dissolved oxygen and temperature. Organic farming showed higher macroinvertebrate diversity and lower dominance, especially the Baetidae family. While BMWP-ASPT and EPT scores were similar across methods, organic farming rated unpolluted in biotilik scores. Hierarchical cluster analysis, PCA, and CCA revealed factors influencing the ecological impacts of farming practices. The study underscores how different agricultural methods affect macroinvertebrate diversity, highlighting their role as environmental indicators. This reflects the diverse ecological impacts of agricultural management practices.
Exploring Sustainable Approaches: Efficacy of Plant-Based Oils and Beauveria bassiana Fungal Spores in Managing Silverleaf Whitefly (Bemisia tabaci) Infestations: Managing Silverleaf Whitefly (Bemisia tabaci) Infestations kurnianto, agung sih; Purnomo, Hari; Sucipto , Irwanto; Muhlison , Wildan; Dewi, Nilasari; Kamalin, Indah M.; Khoiruttamam, Muhammad Zulfa; Aini, Wilda Qurrotul; Magvira , Nur Laila; Handoko, Rose Novita Sari
Journal of Tropical Life Science Vol. 15 No. 1 (2025)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/

Abstract

The Silverleaf whitefly, Bemisia tabaci (Hemiptera: Aleyrodidae), is a destructive insect pest of important greenhouse and field crops. Several studies have shown the effectiveness of Beauveria bassiana in controlling Silverleaf whitefly.. However, a major challenge lies in the rapid evaporation of water in greenhouse crop models. Therefore, this study aimed to evaluate the effectiveness of B. bassiana against the whitefly and test its compatibility with various vegetable oils as carrier media. This research at the Agrotechnology Laboratory, Faculty of Agriculture, University of Jember, used pure isolates of B. bassiana for mass production until conidia reached 2.5 x 107 per gram. We employed a Completely Randomized Design (CRD) with factors of vegetable oil (Corn Oil, Vegetable Oil, Soybean Oil) and concentration (5%, 10%, 15%) using Ultra Low Volume (ULV) formulations. The results revealed that the addition of vegetable oils enhanced the effectiveness of B. bassiana in controlling Silverleaf whitefly, with corn oil having the most significant impact due to its high carbohydrate content that supported B. bassiana viability. Additionally, the concentration of B. bassiana formulation also influenced the rate of whitefly mortality (mycocity), with a 15% concentration yielding the best results. Whitefly nymphs infected with B. bassiana exhibited slowed activity and reduced appetite. Adding vegetable oil facilitated the formation of a protective biofilm around conidia, shielding them from UV radiation, increasing conidia viability, and supporting field application. The infection process by B. bassiana required 6 days to achieve 100% mortality. This research suggests that B. bassiana can be an effective alternative for controlling Silverleaf whiteflies, especially when used with plant-based oils as a carrier medium. This approach may help reduce reliance on chemical pesticides and address issues related to Silverleaf whitefly resistance to insecticides.