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Identifikasi Teripang Laut (Holothuroidea) dari Perairan Laut Pulau Kabaruan Berdasarkan Identifikasi Morfologi dan DNA Barcoding Rattu, Ferencia Esananda; Mege, Revolson; Manampiring, Nonny; Roring, Verawati Ida Yani; Gedoan, Sukmarayu; Mokosuli, Yermia
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.9649

Indonesia is known with its high biodiversity. One of them is sea cucumber. Various species of sea cucumbers are found in Indonesian sea in Talaud Regency at Kabaruan Island. Identification of sea cucumbers to reveal the biodiversity of sea cucumbers in Kabaruan Island, which is almost unknown. This research was to identify six samples of sea cucumber (Holothuroidea) in Kabaruan Island based on morphology and DNA barcoding using the COI gene. The differences between each species can be seen from the morphological characteristics, the length and width of sea cucumbers, papillae, pattern and color. The results showed that there were 4 species from 6 samples, which is Holothuria leucospilota, Holothuria whitmaei, Eleutherozoa sp., and Holothuria atra. That six samples with the code A1, A2, B1, C1, and C2 have a homology level of 99%-100% with the target nucleotide sequence from GenBank. Meanwhile, the sampleâ€™s code A3 has a homology level of 90% with the Eleutheroza sp. so there is a possibility that sample A3 is a new taxa that has the highest similarity to the Eleutheroza sp. From the six samples, it was found that samples A2 and B1 had the highest level of similarity which is 100%. Meanwhile, the samples with the lowest percentage values are samples A3 and B1 and samples A2 and A3, with a percentage value of 82.75%. There were 4 species from six samples found in Kabaruan Island. There is a possibility that Sample A3 is a new species that is similar to Eleutheroza sp.

Analysis of Dominant Number Values Weed Population in Paddy Rice Cultivation (Oryza sativa, L.) in Koya Village, Minahasa, North Sulawesi Kasim, Yuriko; Lihiang, Anatje; Gedoan, Sukmarayu; Tanor, Meity; Yalindua, Aser; Sumampouw, Herry
Indonesian Biodiversity Journal Vol. 5 No. 1 (2024): April 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i1.9076

Paddy rice is the main food crop in Indonesia because rice is the primary food source of the Indonesian people. However, it faces obstacles caused, among others, by the presence of nuisance plants, namely weeds, that can reduce the quantity and quality of harvest or production. This study examines the value of the dominant Number of weed populations in rice field cultivation. The research method used was weed observation with analysis of the chief number value, using the square of a sample plot measuring 50 cm x 50 cm, randomly placed on the experimental land. The dominant number value analysis was carried out four times at the beginning of the study as an initial vegetation analysis, 21 DAP observations, 45 DAP observations, and 60 DAP observations. The results showed that the weed species with the highest Dominant Number Value at initial words in paddy fields were Paspalum disticum, Fibristylis litoralis, Marsilea crenata, Cyperus iria, and Ludwigia octovalvis; weed species with the highest Dominant Number Value at 21 DAP observations were P. disticum, Echinochloa crusgalli, F. litoralis, M. crenata, and Leersia hexandra; The weed species with the highest Dominant Number Value at 45 DAP observations were P. disticum, F. litoralis, C. iria, E. crusgalli, and Leersia hexandra and the weed species with the highest Dominant Number Values at 60 DAP observations were E. crusgalli, P. disticum, F. litoralis, Scirpus juncoides, and S. juncoides

CHARACTERIZATION OF SAPROPHAGE INSECTS FORENSIC ENTOMOLOGY INDICATORS USING LOCAL PIGS Kandowangko, Sandy; Wurarah, Masje; Mokosuli, Yermia; Satiman, Utari; Gedoan, Sukmarayu
Indonesian Biodiversity Journal Vol. 5 No. 2 (2024): August 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i2.10755

Forensic entomology is the science of insects which is used to analyze cases related to forensics, namely death. This is based on the close relationship between humans and insects who live side by side. Insects can be a factor in determining the Postmortem Interval (PMI) so that it is useful in the forensic investigation process. Medicolegal insects are insects that are used as evidence in death cases. This research aims to obtain the diversity of insect species, the morphological characteristics of insects, the characteristics of insects in experimental pigs that died from hanging, poisoning and stabbing and based on the stage of decomposition. The results of this research examine temperature, soil pH, air humidity and the decomposition process of local pigs. The results of research on the decomposition stage in 3 deaths (hanging, stabbing, and poisoning) showed differences in the time of death, where the hanging carcass decomposed more quickly than the stabbed and poisoned carcass. In the decomposition stage, the first insect encountered is the order (Diptera) where these insects damage internal organs such as the brain and liver and also damage body cells. The temperature results of local pig carcasses placed outdoors ranged from 32.2-34.50C, while indoor carcass temperatures ranged from 26.77-33.43 0C. The degree of acidity (pH) of carcasses placed outdoors ranges from 5.13-8.53 while indoor carcasses ranges from 6.0-7.77. The environmental temperature of animal bodies placed outdoors ranges from 26.35-39,740C, while humidity ranges from 57.79-86.10%. The temperature of animal bodies in the room ranges from 27.54-31,520C, while humidity ranges from 71.50-85.37%.

ANTIOXIDANT ACTIVITY TEST AND ANALYSIS OF COMPOUNDS CONTAINED IN ANGELS’S TRUMPET FLOWER EXTRACT (Brugmansia suaveolens) Wuwungan, Axel; Manampiring, Nonny; Gedoan, Sukmarayu; Mokosuli, Yermia Semuel; Roring, Verawati Ida Yani
Indonesian Biodiversity Journal Vol. 6 No. 1 (2025): April 2025
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v6i1.12553

Indonesia is a highly biodiverse country, second only to Brazil. This gives Indonesia enormous potential in ethnopharmacology. Previous studies have shown that the leaves of the Brugmansia suaveolens plant, also known as Angel trumpet, have high antioxidant activity. The aim of this study is to test the antioxidant activity of B. suaveolens flowers and conduct quantitative screening to determine which compounds play the greatest role in their antioxidant activity. This research used the DPPH test and Gas Chromatography-Mass Spectrometry (GC-MS) screening. Ascorbic acid was used as the comparator in this study. Before the DPPH and GC-MS testing, the samples were extracted using the cold maceration technique with a 95% ethanol solvent. Then, the samples were concentrated using a rotary evaporator. The IC₅₀ value of the ethanol extract of B. suaveolens flowers is 196.16 µg/mL, while the IC₅₀ value of ascorbic acid, the comparator, is 3,814 µg/mL. This result shows that the ethanol extract of B. suaveolens flowers has moderate antioxidant activity. Screening bioactive compounds with GC-MS showed that Hexadecenoic acid and Octadecanoic acid play the biggest role in antioxidant activity. However, the compound with the highest content in the ethanol extract of B. suaveolens flowers is scopolamine.

Analysis of Dominant Number Values Weed Population in Paddy Rice Cultivation (Oryza sativa, L.) in Koya Village, Minahasa, North Sulawesi Kasim, Yuriko; Lihiang, Anatje; Gedoan, Sukmarayu; Tanor, Meity; Yalindua, Aser; Sumampouw, Herry
Indonesian Biodiversity Journal Vol. 5 No. 1 (2024): April 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i1.9076

Paddy rice is the main food crop in Indonesia because rice is the primary food source of the Indonesian people. However, it faces obstacles caused, among others, by the presence of nuisance plants, namely weeds, that can reduce the quantity and quality of harvest or production. This study examines the value of the dominant Number of weed populations in rice field cultivation. The research method used was weed observation with analysis of the chief number value, using the square of a sample plot measuring 50 cm x 50 cm, randomly placed on the experimental land. The dominant number value analysis was carried out four times at the beginning of the study as an initial vegetation analysis, 21 DAP observations, 45 DAP observations, and 60 DAP observations. The results showed that the weed species with the highest Dominant Number Value at initial words in paddy fields were Paspalum disticum, Fibristylis litoralis, Marsilea crenata, Cyperus iria, and Ludwigia octovalvis; weed species with the highest Dominant Number Value at 21 DAP observations were P. disticum, Echinochloa crusgalli, F. litoralis, M. crenata, and Leersia hexandra; The weed species with the highest Dominant Number Value at 45 DAP observations were P. disticum, F. litoralis, C. iria, E. crusgalli, and Leersia hexandra and the weed species with the highest Dominant Number Values at 60 DAP observations were E. crusgalli, P. disticum, F. litoralis, Scirpus juncoides, and S. juncoides

CHARACTERIZATION OF SAPROPHAGE INSECTS FORENSIC ENTOMOLOGY INDICATORS USING LOCAL PIGS Kandowangko, Sandy; Wurarah, Masje; Mokosuli, Yermia; Satiman, Utari; Gedoan, Sukmarayu
Indonesian Biodiversity Journal Vol. 5 No. 2 (2024): August 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i2.10755

Forensic entomology is the science of insects which is used to analyze cases related to forensics, namely death. This is based on the close relationship between humans and insects who live side by side. Insects can be a factor in determining the Postmortem Interval (PMI) so that it is useful in the forensic investigation process. Medicolegal insects are insects that are used as evidence in death cases. This research aims to obtain the diversity of insect species, the morphological characteristics of insects, the characteristics of insects in experimental pigs that died from hanging, poisoning and stabbing and based on the stage of decomposition. The results of this research examine temperature, soil pH, air humidity and the decomposition process of local pigs. The results of research on the decomposition stage in 3 deaths (hanging, stabbing, and poisoning) showed differences in the time of death, where the hanging carcass decomposed more quickly than the stabbed and poisoned carcass. In the decomposition stage, the first insect encountered is the order (Diptera) where these insects damage internal organs such as the brain and liver and also damage body cells. The temperature results of local pig carcasses placed outdoors ranged from 32.2-34.50C, while indoor carcass temperatures ranged from 26.77-33.43 0C. The degree of acidity (pH) of carcasses placed outdoors ranges from 5.13-8.53 while indoor carcasses ranges from 6.0-7.77. The environmental temperature of animal bodies placed outdoors ranges from 26.35-39,740C, while humidity ranges from 57.79-86.10%. The temperature of animal bodies in the room ranges from 27.54-31,520C, while humidity ranges from 71.50-85.37%.

The Use of Beauveria bassiana as Biological Control against the Pepper Aphid Insect Pest Myzus persicae Sulz Semuel Harpandi; Jantje Ngangi; Helen Joan Lawalata; Sukmarayu Pieter Gedoan; Utari Satiman; Yermia Semuel Mokosuli
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 1 (2025): February 2025: Pages 1-66
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i01.p02

This research is motivated by chilies, which are one of the plant products that become raw materials for daily needs and are therefore classified as a secondary food source. Insect pests are a factor affecting chilli productivity, use of fungi as biological controllers, to determine the use of the fungus Beauveria bassiana as a biological control against the insect pest of chilli aphids Myzus persicae Sulz, the research method used in this study is an experimental method using the complete randomized design (CRD) method with five treatments and three replications, where each plot has five samples, the treatment doses were Control, P1 (6 g/500 ml), P2 (7 g/500 ml), P3 (8 g/500 ml), P4 (9 g/500 ml) and Lethal Dose 50, the results of this study showed that the application of B. bassiana had a significant effect on the mortality of M. persicae Sulz with the mortality obtained was 0.75% of the total number of samples 120 outside the control treatment, so the higher the dose, the higher the mortality, the LD50 result was 6.025 g/ml, showing that the toxicity of B. bassiana falls into the category of mild toxins. Therefore, we can conclude that the fungus B. bassiana serves as an effective biological control agent against the insect pest M. persicae Sulz.

Analysis of Weed Diversity, Density and Dominance on Rice Plants in Minahasa, South Minahasa, North Minahasa, and Tomohon Regency Tirza Selfin Korneles; Orbanus Naharia; Utari Satiman; Marthy Lingkan Stella Taulu; Sukmarayu Pieter Gedoan
Advances in Tropical Biodiversity and Environmental Sciences Vol. 9 No. 1 (2025): February 2025: Pages 1-66
Publisher : Institute for Research and Community Services Udayana University (LP2M Universitas Udayana)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/ATBES.2025.v09.i01.p04

This study investigates the diversity of weeds in rice plants across Minahasa, South Minahasa, North Minahasa, and Tomohon regency, focusing on the environmental factors influencing the distribution and density of weeds. The research highlights that the diversity of weeds is significantly influenced by environmental factors such as rainfall, soil type, and water management practices applied by farmers. Species such as Marsilea crenata and Panicum disticum dominate areas with poor drainage, while Ludwigia hexandra and Fimbristylis litoralis thrive in fields with better drainage. Observations of weed density at 21 and 42 days after planting revealed that the competition between paddy and weeds changes as the paddy plants mature, with the initial dominance of weeds decreasing as the paddy plants grow stronger. The findings provide valuable insights into weed dynamics and the significant role environmental conditions play in determining their distribution. These results offer guidance for developing more effective and environmentally sustainable weed management strategies. Recommendations include selective herbicide use, mechanical soil cultivation, crop rotation, and improved water management. The study also suggests that further research is needed to assess the impact of climate change on weed diversity and the long-term effectiveness of weed management practices.

Pengaruh Strategi Pembelajaran Project Based Learning (PjBL) Terhadap Hasil Belajar Siswa Kelas X SMA NEGERI 1 Motoling Theresa Runtunuwu; Jemmy L. Sumakul; Yermia S. Mokosuli; Sukmarayu P. Gedoan
PESHUM : Jurnal Pendidikan, Sosial dan Humaniora Vol. 5 No. 1: Desember 2025
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/peshum.v5i1.14630

Pembelajaran PjBL adalah model pembelajaran yang menempatkan siswa sebagai pusat dan guru sebagai fasilitator, menekankan pemecahan masalah nyata melalui proyek. Penerapan PjBL secara spesifik dalam konteks mata pelajaran tertentu dan implikasinya terhadap hasil belajar siswa masih memerlukan eksplorasi lebih lanjut. Penelitian ini bertujuan mengevaluasi pengaruh PjBL terhadap hasil belajar kelas X di SMA Negeri 1 Motoling. Metode penelitian ini ialah metode eksperimen dengan desain yang berlaku pada yakni quasi eksperimen berupa Pre-test Post-test Control Group Design. Hasil penelitian menunjukkan bahwa skor tertinggi tes awal pada kelas kontrol sebesar 70 dengan rerata 52,17, skor tertinggi kelas eksperimen sebesar 75 dengan rerata 52. Skor tertinggi tes akhir pada kelas kontrol sebesar 90 dengan rerata 72 sedangkan pada kelas eksperimen sebesar 95 dengan rerata 83. Kesimpulan yaitu bahwa terdapat pengaruh strategi pembelajaran Project Based Learning (PjBL) terhadap hasil belajar siswa kelas X SMA Negeri 1 Motoling. Secara konsisten, bukti-pembuktian yang ada menunjukkan bahwa PjBL memiliki keunggulan yang nyata terhadap pembelajaran konvensional/ceramah dalam hal peningkatan kemampuan pemecahan masalah, pemahaman konsep, transfer ke praktik nyata, serta penguatan keterampilan non-kognitif seperti kolaborasi, komunikasi, dan motivasi belajar sehingga meningkatkan hasil belajar

Penerapan Model Pembelajaran Problem Based Learning Untuk Meningkatkan Hasil Belajar IPA Siswa Kelas IX C di SMP Negeri 6 Langowan Sukmarayu P Gedoan; Farlen Arlandi Winokan; Utari Satiman; Marthy LS Taulu
PESHUM : Jurnal Pendidikan, Sosial dan Humaniora Vol. 5 No. 4: Juni 2026
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/peshum.v5i4.18141

Latar belakang penelitian ini adalah rendahnya hasil belajar siswa pada mata pelajaran IPA. Berdasarkan hasil observasi serta wawancara di SMP Negeri 6 Langowan, pembelajaran di kelas hanya berlangsung satu arah, siswa kurang memperhatikan pelajaran, dan siswa dominan hanya mencatat materi. Penelitian ini bertujuan untuk meningkatkan hasil belajar siswa kelas IX C SMP Negeri 6 Langowan melalui penerapan model pembelajaran PBL khususnya pada materi sistem perkembangbiakan tumbuhan. Penelitian ini menggunakan jenis penelitian tindakan kelas (PTK). Penelitian ini dilaksanakan di kelas IX C SMP Negeri 6 Langowan yang berjumlah 25 siswa. Hasil penelitian siklus I menunjukkan 7 siswa tuntas dengan persentase 28% dan 18 siswa tidak tuntas dengan persentase 72%. Pada pelaksanaan siklus II, 24 siswa tuntas dengan persentase 96% sedangkan 1 siswa tidak tuntas dengan persentase 4%. Kesimpulan penelitian ini bahwa penerapan model pembelajaran problem based learning mampu meningkatkan hasil belajar IPA di kelas IX C SMP Negeri 6 Langowan materi sistem perkembangbiakan tumbuhan.

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