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Giving a combination of snails (Achatina fulica) and coconut dregs on the growth and protein content of maggots (Hermetia illucens) Purnama, Intan; Ruyani, Aceng; Yani, Ariefa Primair; Johan, Henny; Parlindungan, Deni; Nursa’adah, Euis
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica, Vol. 12: No. 2 (August, 2025)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v12i2.22660

Abstract

This study aims to determine the effect of providing a combination of snails and coconut dregs as feed on the growth and protein content of Black soldier Fly (BSF) maggots. The method used is an experiment with a Completely Randomized Design (CRD) consisting of five treatments and three replications. The treatments consist of: P1 (100% snails), P2 (75% snails: 25% coconut dregs), P3 (50%: 50%), P4 (25%: 75%), and P5 (100% coconut dregs). Maggot maintenance was carried out for 14 days with feeding carried out every 2 days in the morning at 10:00. The research data observed included Weight, Thickness, Length which were analyzed statistically using the ANOVA test and the test was continued with the Least Significant Difference (LSD) test, and the Kruskal wallis test if the data was not normal, temperature and humidity, Feed consumption, Specific growth rate (SGR), Waste reduction index (WRI), and Protein content and water content were analyzed using the automatic kjeldahl test. The results of the study showed that the provision of snail and coconut dregs feed had a very significant effect on the growth of maggots (P <0.05) both in weight and thickness, but had no significant effect (P>0.05) on the growth of maggot length. Treatment P1 (100% snail) gave the best results with an average weight of 0.09 g, a length of 13.4 mm, and the highest protein content of 27.49%. Treatment P5 (100% coconut dregs) showed the lowest results in all main parameters. It was concluded that snail feed was more optimal in supporting the growth and protein content of BSF maggots. The high animal protein content and soft texture are the main reasons, which show the potential of snails as a highly nutritious alternative feed for BSF maggot cultivation. Keywords: BSF Maggots; Coconut dregs; Growth; Snails
Development of Electronic Student Worksheets (E-LKPD) Pendap Bengkulu Based on Discovery Learning as A Learning Media for Additive Material Nutriastuti, Putri; Uliyandari, Mellyta; Parlindungan, Deni; Mayub, Afrizal; Defianti, Aprina
Jurnal Paedagogy Vol. 11 No. 2 (2024): April
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jp.v11i2.11176

Abstract

This research aims to develop the electronic student worksheets (E-LKPD) Pendap Bengkulu based on Discovery Learning as a Learning Media for Additive Material in Science lesson content for class VIII SMP. This study used the 4D development model (Define, Design, Develop, and Disseminate), which was limited to the development stage with limited trials conducted at SMPN 03 Bengkulu City, with a sample of 33 students from class VIII.1. To collect data, several questionnaires were distributed to media experts, material experts, participants, and students. Data analysis was carried out using descriptive statistical analysis techniques using percentage analysis. The results of the research showed that the feasibility test of E-LKPD involving 3 material experts, 2 media experts, and 2 participants resulted in an 92.3% percentage of validation test results, and it can be said that E-LKPD Pendap Bengkulu, which was developed as a learning medium for additive material for junior high school students, was very feasible to use. Analysis of student readability of E-LKPD Pendap Bengkulu as a learning medium for additive material for junior high school students resulted in a percentage of 89.8% readability response, indicating that E-LKPD is very well applied to junior high school students in grade VIII.
Studi Ekologi Makroinvertebrata di Area Kolam Konservasi Ex-situ Kura-Kura Siebenrockiella crassicollis di Universitas Bengkulu Hasbi; Karyadi, Bhakti; Parlindungan, Deni; Uliyandari, Mellyta; Defianti, Aprina
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 10, No 1 (2025): February 2025
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v10i1.9730

Abstract

Makroinvertebrata merupakan organisme tidak bertulang belakang yang memiliki ukuran kasat mata, memiliki habitat di darat, dalam  tanah, perairan meliputi air laut dan tawar. Kelompok makroinvertebrata di perairan bisa dijadikan bioindikator suatu perairan. Makroinvertebrata di perairan air tawar contohnya kelompok keong air tawar, serangga air, udang dan Clitellata seperti lintah. Penelitian dilakukan pada bulan Oktober 2023 sampai Januari 2024 menggunakan teknik purposive sampling. Pengambilan sampel menggunakan leaf litter bags, jaring seser, dan mengambil sedimen dasar perairan menggunakan ember. Pengukuran parameter lingkungan dilakukan meliputi pengukuran intensitas cahaya, suhu air, tingkat keasaman (pH), oksigen terlarut (DO), kedalaman lumpur, dan kedalaman air. Analisis data menggunakan indeks Shannon-Wiener, indeks Eveness dan indeks Simpson. Hasil identifikasi makroinvertebrata menunjukkan terdapat 16 spesies terdiri atas 13 famili dan 4 kelas. Indeks keanekaragaman makroinvertebrata di area kolam konservasi ex-situ kura-kura Siebenrockiella crassicollis Universitas Bengkulu secara umum tekanan ekologis berada pada kondisi tekanan rendah hingga sedang, dapat dilihat pada nilai H’ berkisar antara 0,981 sampai 1,577, indeks keseragaman berkisar antara 0,354 sampai 0,569 dan indeks dominansi berkisar antara 0,342 sampai 0,506. Kelimpahan, keanekaragaman, keseragaman dan dominansi makroinvertebrata dipengaruhi oleh parameter fisika kimia dan kondisi lingkungan. 
Study of dogania subplana aclimatization in the turtle learning center university of bengkulu Marliansa, Meiredo; Karyadi, Bhakti; Parlindungan, Deni; Ruyani, Aceng; Nursa'adah, Euis
JPBIO (Jurnal Pendidikan Biologi) Vol 10, No 2 (2025): November 2025
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpbio.v10i2.4953

Abstract

The forest softshell turtle (Dogania subplana) is a species increasingly threatened by habitat destruction and overexploitation. This study aims to identify the acclimatization process of D. subplana in an artificial environment, specifically, an aquarium at the Turtle Learning Center (TLC). The research was conducted over 30 days from July to August 2024. Observations were made on daily behavior, body temperature, and health condition, individual biometric measurements, and environmental (abiotic) parameters. The results showed that daily behaviors such as feeding, basking, and hiding occurred regularly, indicating the species' ability to adapt to a new environment. The turtles experienced an increase in body weight, while growth in carapace length and width was very slow. The body temperature of D. subplana varied in accordance with the surrounding environmental temperature, reflecting its dependence on ambient conditions. Some individuals experienced minor health issues, such as fungal infections, but the majority remained active and healthy. Environmental factors such as temperature, humidity, pH, dissolved oxygen, total dissolved solids, and light intensity were within ranges conducive to acclimatization. These findings suggest that the aquarium at the TLC is quite effective as an ex situ conservation facility in supporting the adaptation process of D. subplana  outside its natural habitat.
Reduction lead metal in process marinating local food fish pendap using lemon juice (citrus limon) Asti, Nora Ayudi; Johan, Henny; Parlindungan, Deni; Primairyani, Ariefa; Defianti, Aprina; Nursaadah, Euis
JPBIO (Jurnal Pendidikan Biologi) Vol 10, No 2 (2025): November 2025
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpbio.v10i2.5209

Abstract

Fish have the potential to be contaminated with heavy metals such as lead, which can originate from human activities, industry, and ports. The Bengkulu people have a traditional processing method that is believed to reduce heavy metal content in fish through the immersion of fish in Pendap dishes using water and lemon. This study aims to observe the reduction of heavy metal content in fish during the immersion process using water and lemon juice in Pendap dishes. The research was experimental with positive and negative results and analyzed using the SPSS ANOVA test to see significant differences between treatment groups. The fish used as samples included Tongkol Sarda orentalis, Kembung Rastrelliger kanagurta, Tuna Thunnus albacares, and Tenggiri Scomberomorus Lacepède. The parts of the fish that were analyzed included the muscles, liver, and gills. All samples were exposed to Pb(NO3)2 and divided into 3 treatment groups: 1 positive control, 2 precipitated with water, and 3 precipitated with lemon juice (Citrus limon). The samples were tested using the reagents NaOH, KI, NH4OH, and HCl. Based on the research results, it was found that the application of lemon juice produced significant results in reducing Pb levels, as indicated by the negative test results.
Effect honje forest fruit juice administration on hemoglobin levels following mercury chloride treatment in mice Iskandar, Aiza Sabina Putri; Ruyani, Aceng; Parlindungan, Deni; Johan, Henny; Mayub, Afrizal
JPBIO (Jurnal Pendidikan Biologi) Vol 10, No 2 (2025): November 2025
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpbio.v10i2.5561

Abstract

Exposure to mercury chloride (HgCl?) is known to induce oxidative stress, which negatively affects the hematological system, including a decrease in hemoglobin levels. This study aims to analyze the effect of honje fruit juice (Etlingera hemisphaerica), known for its high antioxidant content, on hemoglobin levels in mice (Mus musculus) exposed to mercury chloride. This study used an experimental method involving several groups of mice, namely group K1 (control), group K2 (given honje fruit juice), and group K3 (injected with mercury and given honje fruit juice). Hemoglobin levels were measured using a Sahli tube. The results showed that honje fruit juice significantly increased hemoglobin levels in mice exposed to mercury chloride compared to the control group. These findings indicate that the antioxidant content in honje fruit can help reduce the toxic effects of mercury chloride on the circulatory system. Therefore, honje fruit juice has the potential to be developed as a natural therapeutic agent in efforts to mitigate the toxic effects of mercury chloride.
PENGGUNAAN MEDIA BOOKLET UNTUK MENINGKATKAN HASIL BELAJAR SISWA Syaputri, Witari; Setiawan, Iwan; Nirwana, Nirwana; Parlindungan, Deni; Sutarno, Sutarno
DIKSAINS : Jurnal Ilmiah Pendidikan Sains Vol. 6 No. 1: Desember 2025
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/diksains.6.1.79-87

Abstract

ABSTRAK                                                               Tujuan penelitian ini adalah untuk mengetahui apakah terdapat perbedaan hasil belajar yang signifikan antara siswa yang mengikuti pembelajaran menggunakan media booklet dan siswa yang menggunakan buku paket pada materi interaksi mahluk hidup dengan lingkungannya dan untuk mengetahui bagaimana peningkatan hasil belajar setelah menggunakan media booklet pada siswa kelas VII SMPN 15 Kota Bengkulu pada materi interaksi makhluk hidup dengan lingkungan. Penelitian dilakukan di dua kelas VII SMPN 15 Kota Bengkulu. Sampel penelitian diambil menggunakan teknik purposive sampling yang sebelumnya telah diuji normalitas dan homogenitas diperoleh siswa kelas VII A sebagai kelas eksperimen (uji coba) dan siswa kelas VII B sebagai kelas kontrol (pembanding). Jumlah siswa yang terlibat sebanyak 50 siswa yang terdiri dari 25 siswa dari kelas VII A dan 25 siswa dari kelas VII B. Jenis penelitian ini adalah Quasi Experiment Research tipe nonequivalent control group design. Teknik pengumpulan data menggunakan tes untuk hasil belajar IPA. Kesimpulan yang dapat diambil dari penelitian ini adalah (1) Terdapat perbedaan hasil belajar yang signifikan antara siswa yang mengikuti pembelajaran menggunakan media booklet dan siswa yang menggunakan buku paket pada materi interaksi mahluk hidup dengan lingkungan. (2) Terdapat peningkatan hasil belajar yang signifikan setelah menggunakan media booklet pada siswa kelas VII SMPN 15 Kota Bengkulu pada materi interaksi makhluk hidup dengan lingkungan. Kata kunci: booklet; hasil belajar; Bengkulu. ABSTRACT The purpose of this study was to determine whether there were significant differences in learning outcomes between students who participated in learning using booklet media and students who used package books on the interaction of living things with their environment and to find out how to improve learning outcomes after using booklet media in grade VII students of Junior High School 15 Bengkulu City on the material of interaction of living things with the environment. The study was conducted in two classes VII of junior high school 15 Bengkulu City. The research sample was taken using purposive sampling techniques that had previously been tested for normality and homogeneity obtained by grade VII A students as an experimental class (trial) and grade VII B students as a control class (comparison). The number of students involved was 50 students consisting of 25 students from class VII A and 25 students from class VII B. This type of research is Quasi Experiment Research type nonequivalent control group design. Data collection techniques use tests for science learning outcomes. The conclusions that can be drawn from this study are (1) There are significant differences in learning outcomes between students who participate in learning using booklet media and students who use textbooks on the interaction of living things with the environment. (2) There was a significant improvement in learning outcomes after using booklet media in grade VII students of Junior High School 15 Bengkulu City on the material of interaction of living things with the environment. Keywords: booklet; learning Outcomes; Bengkulu.
PENGARUH PENERAPAN PROJECT BASED LEARNING MATERI INTERAKSI MAKHLUK HIDUP DENGAN LINGKUNGAN TERHADAP HASIL BELAJAR SISWA SMPN 15 KOTA BENGKULU Lestari, Tri Reski; Sakti, Indra; Wardana, Rendy Wikrama; Sutarno, Sutarno; Parlindungan, Deni; Nirwana, Nirwana
DIKSAINS : Jurnal Ilmiah Pendidikan Sains Vol. 6 No. 1: Desember 2025
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/diksains.6.1.88-96

Abstract

ABSTRAK Tujuan penelitian ini adalah untuk mengetahui pengaruh penerapan project based learning materi interaksi makhluk hidup dengan lingkungan terhadap hasil belajar, peningkatan hasil belajar, dan besar pengaruh penerapan project based learning terhadap hasil belajar siswa SMPN 15 kota bengkulu. Jenis penelitian yang diterapkan adalah Quasi Experiment Research tipe nonequivalent control group design. Penelitian ini menggunakan dua kelompok sampel, yaitu sampel kelompok eksperimen yang berjumlah 22 orang dan kelompok kontrol berjumlah 22 orang. Sampel penelitian diambil menggunakan teknik purposive sampling. Teknik pengumpulan data menggunakan tes untuk hasil belajar IPA. Berdasarkan pengujian hipotesis statistik dengan uji independent sample t-test (α = 0,05) didapatkan nilai taraf signifikansi 0,002 < 0,05 dan nilai thitung > ttabel, dimana 3,277 > 2,018 yang berarti H0 ditolak dan Ha diterima. Maka, dapat diambil kesimpulan bahwa terdapat pengaruh penerapan project based learning materi interaksi makhluk hidup dengan lingkungan terhadap hasil belajar siswa SMPN 15 Kota Bengkulu. Penerapan pembelajaran IPA materi interaksi makhluk hidup dengan lingkungan menggunakan project based learning dapat meningkatkan hasil belajar. Hal ini ditunjukkan oleh nilai rata-rata N-Gain yang diperoleh sebesar 0,70 dalam kategori sedang. Besar pengaruh penerapan project based learning materi interaksi makhluk hidup dengan lingkungan terhadap hasil belajar siswa ditunjukkan melalui nilai effect size Cohen’s d sebesar 0,99 dengan kategori sangat besar. Sehingga dapat disimpulkan bahwa terdapat pengaruh penerapan project based learning materi interaksi makhluk hidup dengan lingkungan terhadap hasil belajar siswa, juga dapat meningkatkan hasil belajar dan pengaruh yang sangat besar terhadap hasil belajar.   Kata kunci: project-based learning; mading; hasil belajar.   ABSTRACT The study was to determine the effect of application project based learning material interaction of living things with the environment on learning outcomes, increasing learning outcomes, and the magnitude of the effect of application project based learning on student learning outcomes at SMPN 15 Bengkulu City. This research is quasi experiment research type nonequivalent control group design. This study used two sample groups, namely the experimental group with 22 people and the control group with 22 people. The research sample was taken using the technique purposive sampling. Data collection techniques using tests for science learning outcomes. Based on statistical hypothesis testing with independent sample t-test (α = 0.05) obtained a significance level value of 0.002 <0.05 and tcount > ttable, where 3.277 > 2.018 which means H0 rejected and Ha accepted. So, it can be concluded that there is an effect of application project based learning using science magazines on the interaction of living things with the environment on student learning outcomes at SMPN 15 Bengkulu City. Application of natural science learning materials on the interaction of living things with the environment using project based learning can improve learning outcomes. This is indicated by the average N-Gain value obtained at 0.70 in the medium category. Great influence of the application of the model project based learning material interaction of living things with the environment on student learning outcomes is shown through value effect size Cohen's d of 0.99 with a very large category. So it can be concluded that there is an effect of implementation project based learning material on the interaction of living things with the environment on student learning outcomes, can also improve learning outcomes and has a very large influence on learning outcomes.   Keywords: project-based learning, wall magazine, learning outcomes.
PENGARUH PENERAPAN PROBLEM BASED LEARNING BERBANTUAN HANDOUT TERHADAP HASIL BELAJAR PADA MATERI PENCEMARAN LINGKUNGAN Harofah, Ayu Idhil; Sakti, Indra; Parlindungan, Deni; Uliyandari, Mellyta; Wardana, Rendy Wikrama; Sutarno, Sutarno
DIKSAINS : Jurnal Ilmiah Pendidikan Sains Vol. 6 No. 1: Desember 2025
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/diksains.6.1.61-68

Abstract

ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh model Problem based Learning (PBL) berbantuan Handout  terhadap hasil belajar peserta didik kelas VII di SMPN 15 Kota Bengkulu dalam materi pencemaran lingkungan.. Sampel penelitian diambil menggunakan teknik purposive sampling dengan berbagai pertimbangan maka dipilih kelas VII D dengan jumlah siswa sebanyak 24 siswa yang terdiri dari 11 siswa laki-laki dan 13 siswa perempuan. Jenis penelitian ini adalah Pre-Experimental Design tipe One-Group Pretest-Postest Design. Pengumpulan data hasil belajar siswa dilakukan dengan memberikan lembar soal berupa Pretest (tes awal) dan Postest (tes akhir) di setiap pertemuan. Uji hipotesis  dilakukan  menggunakan uji –t. Jika dari hasil  uji –t tersebut  terdapat perbedaan yang signifikan maka ditarik kesimpulan terdapat pengaruh penerapan model Problem Based Learning berbantuan handout terhadap hasil belajar siswa,  dan sebaliknya jika tidak terdapat perbedaan  yang signifikan maka tidak terdapat pengaruh. Hasil uji t diperoleh signifikasi hitung sebesar 0,00 > α = 0,05 sehingga Ho ditolak dan Ha diterima yang menyatakan bahwa terdapat perbedaan hasil belajar yang signifikan antara sebelum dan setelah siswa mengikuti pembelajaran Problem based Learning menggunakan handout. Berdasarkan hasil perhitungan N-gain score rerata sebesar 0,512 dalam kategori sedang. Berdasarkan hasil perhitungan effect size  diperoleh nilai sebesar 0,27 dalam kategori sedang. Dapat disimpulkan terdapat pengaruh penerapan model problem based learning menggunakan Handout Ilmu Pengetahuan Alam terhadap hasil belajar materi pencemaran lingkungan, dengan besar pengaruh pada kategori sedang. Kata kunci: Problem Based Learning, Handout, Pencemaran Lingkungan, Hasil Belajar ABSTRACT This study aims to determine the effect of the Problem-based Learning (PBL) model assisted by Handout on the learning outcomes of seventh grade students at Junior High School 15 Bengkulu City in environmental pollution material. The research sample was taken using purposive sampling technique with various considerations, class VII D was chosen with a total of 24 students consisting of 11 male students and 13 female students. This type of research is Pre-Experimental Design type One-Group Pretest-Postest Design. Data collection on student learning outcomes was carried out by giving question sheets in the form of Pretest (initial test) and Postest (final test) at each meeting. Hypothesis testing was carried out using the t-test. If from the results of the t-test there is a significant difference, it is concluded that there is an effect of applying the Problem Based Learning model assisted by handouts on student learning outcomes, and vice versa if there is no significant difference, there is no effect. The t-test results obtained a significance count of 0.00> α = 0.05 so that Ho is rejected and Ha is accepted which states that there is a significant difference in learning outcomes between before and after students take part in Problem-based Learning learning assisted by handouts. Based on the results of the calculation of the average N-gain score of 0.512 in the medium category. Based on the results of the calculation of effect size obtained a value of 0.27 in the medium category. It can be concluded that there is an effect of applying the problem-based learning model using the Natural Science Handout on the learning outcomes of environmental pollution material, with a large effect in the moderate category. Keywords: Problem Based Learning, Handout, Environmental Pollution, Learning Outcomes
PENGEMBANGAN LKPD MATERI PENCEMARAN LINGKUNGAN BERBASIS PENDEKATAN JELAJAH ALAM SEKITAR (JAS) BERORIENTASI PADA PENGUASAAN KONSEP UNTUK SISWA KELAS VII SMP Fitriani, Pera; Johan, Henny; Uliyandari, Mellyta; Sutarno, Sutarno; Parlindungan, Deni
DIKSAINS : Jurnal Ilmiah Pendidikan Sains Vol. 6 No. 1: Desember 2025
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/diksains.6.1.43-53

Abstract

ABSTRAK   Penelitian ini bertujuan untuk mengembangkan LKPD materi pencemaran lingkungan berbasis Pendekatan Jelajah Alam Sekitar (JAS) untuk SMP kelas VII. Jenis Penelitian yang digunakan merupakan penelitian dan  pengembangan (Research and Development) dengan model 4D yang dibatasi pada tahap 3D yaitu Define, Design dan Develop. Teknik pengumpulan data yang digunakan berupa observasi dan wawancara. Insturumen penelitian berupa lembar observasi, lembar panduan wawancara guru, lembar validasi ahli dan lembar angket uji keterbacaan peserta didik. Teknik analisis data dilakukan secara deskriptif dan kuantitatif. Hasil penelitian menunjukan bahwa LKPD berbasis Pendekatan Jelajah Alam Sekitar (JAS) sangat layak dan dapat digunakan berdasarkan hasil validasi ahli. Hasil uji keterbacaan peserta didik terhadap LKPD yang dikembangkan menujukan kategori sangat baik. Simpulan dari hasil penelitian ini menujukan bahwa LKPD yang dikembangkan dinyatakan layak oleh tim ahli dan mendapat respon positif dari peserta didik untuk dilanjutkan dalam uji coba skala luas guna melihat efektivitas produk.   Kata  kunci : LKPD, Pencemaran Lingkungan, Jelajah Alam Sekitar (JAS)   ABSTRACT   This study aims to develop LKPD on environmental pollution material based on the Explore Nature Around (JAS) approach for junior high school grade VII. The type of research used is research and development (Research and Development) with the 4D model which is limited to the 3D stage, namely Define, Design and Develop. The data collection techniques used were observation and interview. Research instruments in the form of observation sheets, teacher interview guide sheets, expert validation sheets and student readability test questionnaires. Data analysis techniques are descriptive and quantitative. The results showed that the LKPD based on the Explore Nature Around Approach (JAS) was very feasible and could be used based on the results of expert validation. The results of the students' readability test of the LKPD developed showed a very good category. The conclusion from the results of this study indicates that the LKPD developed was declared feasible by a team of experts and received a positive response from students to be continued in a wide-scale trial to see the effectiveness of the product.   Keywords : LKPD, Environmental Pollution, Explore Nature Around (JAS)