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All Journal Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Pembelajaran dan Biologi Nukleus Indonesian Journal of Applied Environmental Studies
Arum Setiawan
Sriwijaya University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Physics

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Range extension of the endemic Sumatran admiral Vanessa samani (Hagen, 1895) (Lepidoptera: Nymphalidae) in Sumatra, Indonesia Muhammad Iqbal; Pavel Kirillov; Pormansyah Pormansyah; Doni Setiawan; Guntur Pragustiandi; Arum Setiawan; Indra Yustian
Indonesian Journal of Applied Environmental Studies Vol 3, No 1 (2022): Volume 3 Number 1 April 2022
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3768.357 KB) | DOI: 10.33751/injast.v3i1.4602

Abstract

Sumatran Admiral Vanessa samani (Hagen, 1895) (Lepidoptera: Nymphalidae) is a butterfly endemic to Sumatra, and can only be found in the Karo Highlands (North Sumatra) and Kerinci Mountain (southwestern Sumatra). In this paper, we report two additional records of V. samani from the Aceh Province in northern Sumatra, and the Jambul Highlands of South Sumatra. These records significantly extend the range of distribution of this rare Sumatran highland species. We also report three plants presumed to be the host plants of V. samani in Sumatra: Boehmeria sp., Smilax sp. (Smilax leucophylla) and Anaphalis sp. (Anaphalis longifolia).
Sumatran Pale Hedge Blue Udara dilecta neodilecta (Corbet, 1937) (Lepidoptera: Lycaenidae) in Kerinci Highlands, a southernmost record Muhammad Iqbal; Arum Setiawan; Indra Yustian
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 17 No. 2 (2020): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v17i2.4725

Abstract

Two tiny individuals of Sumatra Pale Hedge Blue Udara dilecta neodilecta (Fruhstorfer, 1910) were observed and documented on 18 August 2014 in Lake Kaco of Kerinci Highlands, Jambi Province. This butterfly was determined using appropriate guides. Finding of Udara d. neodilecta represent a southernmost record  (020S) for this Sumatran endemic subspecies in its range.
Range extension of the endemic Sumatran admiral Vanessa samani (Hagen, 1895) (Lepidoptera: Nymphalidae) in Sumatra, Indonesia Muhammad Iqbal; Pavel Kirillov; Pormansyah Pormansyah; Doni Setiawan; Guntur Pragustiandi; Arum Setiawan; Indra Yustian
Indonesian Journal of Applied Environmental Studies Vol 3, No 1 (2022): Volume 3 Number 1 April 2022
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v3i1.4602

Abstract

Sumatran Admiral Vanessa samani (Hagen, 1895) (Lepidoptera: Nymphalidae) is a butterfly endemic to Sumatra, and can only be found in the Karo Highlands (North Sumatra) and Kerinci Mountain (southwestern Sumatra). In this paper, we report two additional records of V. samani from the Aceh Province in northern Sumatra, and the Jambul Highlands of South Sumatra. These records significantly extend the range of distribution of this rare Sumatran highland species. We also report three plants presumed to be the host plants of V. samani in Sumatra: Boehmeria sp., Smilax sp. (Smilax leucophylla) and Anaphalis sp. (Anaphalis longifolia).
Acute–Chronic Response Continuum Indicates Physiological Trajectories in Daphnia Under Salinity Stress Yadi Oktariansyah; Arum Setiawan; Sri Maulina; Ferta Liza Putri; M. Wahyu Sobirin
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 12, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2026
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v12i3.9048

Abstract

Background: Freshwater salinization is an emerging global stressor that disrupts osmotic regulation and energy balance in aquatic invertebrates. Although acute and chronic toxicity are traditionally evaluated separately, their biological relationship remains insufficiently integrated. This study aimed to determine whether salinity exposure in a laboratory-maintained population of Daphnia sp. is expressed as an acute–chronic response continuum, with physiological trajectories emerging across survival and reproductive endpoints. Methodology: Acute toxicity was assessed through a 24-hour sodium chloride exposure (0.00–3.80 g/L) to determine the LC50, followed by a 10-day chronic experiment using fractions of the LC50 (0–20%). Survival probability and reproductive onset were analyzed using Kaplan–Meier estimation and Cox proportional hazards models, while offspring production was evaluated using non-parametric tests. Findings: The 24-hour LC50 was estimated at 1.87 g/L. Chronic exposure significantly altered survival dynamics (χ² = 11.7, p = 0.02) and reproductive onset (χ² = 10.3, p = 0.04). Reproductive success declined from 100% in controls to 20–40% in exposed groups, while total offspring production differed significantly among treatments according to the Kruskal–Wallis test (χ² = 9.74, p = 0.045) and the Jonckheere–Terpstra test indicated a significant decreasing trend across the salinity gradient (JT = 79.5, p = 0.0148). Sublethal reproductive impairment occurred at concentrations far below the acute lethal threshold. Contributions: Salinity stress in Daphnia sp. operates along a continuous and time-dependent physiological trajectory, where reproductive disruption precedes mortality. Integrating acute lethality with chronic survival and reproductive responses provides a more ecologically relevant framework for freshwater salinity risk assessment
Co-Authors Doni Setiawan Ferta Liza Putri Indra Yustian M. Wahyu Sobirin Muhammad Iqbal Muhammad Iqbal Pavel Kirillov Pormansyah Pormansyah Pragustiandi, Guntur Sri Maulina Yadi Oktariansyah