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All Journal AL KAUNIYAH Biosfer: Jurnal Tadris Biologi Biotropika Journal of Mathematical and Fundamental Sciences Jurnal Sumberdaya Hayati Wahana-Bio: Jurnal Biologi dan Pembelajarannya Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Mandala Pharmacon Indonesia Jurnal Pembelajaran dan Biologi Nukleus Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat BERNAS: Jurnal Pengabdian Kepada Masyarakat Jurnal Inovasi Pendidikan dan Sains Bioscientist : Jurnal Ilmiah Biologi Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Sinar Sang Surya: Jurnal Pusat Pengabdian kepada Masyarakat Oryza : Jurnal Pendidikan Biologi Gunung Djati Conference Series Organisms: Journal of Biosciences Maximus: Journal of Biological and Life Sciences TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Indonesian Journal of Environment and Sustainability Issues
Gres Maretta, Gres
Program Studi Biologi, Institut Teknologi Sumatera
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Identification of the Type of Feed for the Sumatran Elephant (Elephas maximus sumatranus) at the Elephant Response Unit (ERU) Camp Bukit Barisan Selatan National Park Marhaeni, Agustina; Darmawan, Andy; Maretta, Gres; Subki
Indonesian Journal of Environment and Sustainability Issues Vol. 2 No. 2 (2025): December 2025 | Indonesian Journal of Environment and Sustainability Issues
Publisher : WISE Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70211/ijesi.v2i2.212

Abstract

This study aims to identify the types of plants consumed by Sumatran elephants, the parts they eat, and the most frequently consumed plant species as a basis for managing Sumatran elephant feed in the Camp Elephant Response Unit (ERU) area of Bukit Barisan Selatan National Park. Data was collected through direct observation from 09:00 to 15:00 WIB, with observation locations determined using the purposive sampling method. The collected data included the types of food plants, the parts consumed, and the most frequently eaten plant species. Data analysis was conducted by calculating the Sorensen species similarity index and the foraging frequency. A total of 30 plant species were identified as elephant food, with 19 species found in open land habitats. The highest plant species similarity index based on habitat type was found on mixed habitats with swamp openings and cover, reaching 63.15%. The highest plant species similarity index based on individual elephants was recorded for Haryono and Renold at 80%. Eight plant species were identified as the most frequently consumed, including Brachiaria mutica, Cyperus kyllingia, Fimbristylis sp., Imperata cylindrica, Paspalum conjugatum, Panicum repens, Rynchospora corymbosa, and Scleria sp. Additionally, elephants only foraged eight plant species for other functions. Based on this study, Sumatran elephant only consume plant species that are abundant within their grazing habitat. The findings of this study can support the ex-situ conservation of Sumatran elephant by ensuring the continued availability of their food plants in the Camp ERU area of Bukit Barisan Selatan National Park. Keywoards: Sumatran elephant; habitat; identification; foraging frequency; food plants
Uji Stabilitas dan Aktivitas Sediaan Patch Herbal Anti-Acne Ekstrak Etanol Daun Gaharu Simanullang, Gayatri; Ramadhani, Untia Kartika Sari; Suprahman, Nisa Yulianti; Maretta, Gres; Syafitri, Dewi Rana; Saeli, Pinka Mustika; Ashafila, Tsalsha
Jurnal Mandala Pharmacon Indonesia Vol. 10 No. 1 (2024): Jurnal Mandala Pharmacon Indonesia
Publisher : Program Studi Farmasi Universitas Mandala Waluya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35311/jmpi.v10i1.439

Abstract

Acne is a skin condition characterized by the formation of skin bumps due to bacterial activity. Secondary metabolite compounds found in Gaharu leaves, such as flavonoids known for their antibacterial properties. This research aims to assess the physical and chemical stability of an anti-acne patch containing ethanol extract from Gaharu leaves and chitosan polymer. Additionally, this research aims to evaluate the antibacterial effectiveness of the anti-acne patch against Propionibacterium acnes. The experimental approach involves stability testing through cycling tests, observation of physical and chemical properties before and after stability tests, and antibacterial activity testing against P. acnes. The results from the stability test indicate overall stability in organoleptic aspects, thickness, folding ability, weight consistency, moisture content, vapor transmission, and moisture absorption of the anti-acne patch. However, instability is noted in the pH of the preparation. The antibacterial activity test reveals that the entire formulation exhibits antibacterial properties against P. acnes. Furthermore, there is a positive correlation between the increased concentration of ethanol extract from Gaharu leaves or chitosan polymer and the heightened barrier zone value.
Daily Behavior of the Timor Deer (Cervus timorensis) at The Tahura of Wan Abdul Rachman Lampung of Tahura in Year 2021 Maretta, Gres; Agustin, Karista Sandra; Putri, Claudia Tiara; Sofyan, Ichvan
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 8, No 2: Jurnal Pembelajaran Dan Biologi Nukleus Juli 2022
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v8i2.2670

Abstract

The COVID-19 pandemic in Indonesia may affect changes in the daily behavior of the Timor deer in the Deer Captivity at the Grand Forest Park, Wan Abdul Rachman. The purpose of this study was to determine the daily behavior of the Timor deer (Cervus timorensis) during the COVID-19 pandemic at the Wan Abdul Rachman (WAR) Forest Park Deer Captivity (Tahura). The objects used are 4 male and female Timor deer. This study uses the Scan Sampling method with an interval of 10 minutes and starts from 08.00 - 17.00 WIB. Based on observations of the behavior of the Timor deer in captivity of the Tahura WAR Deer, it can be concluded that the most common behaviors are resting behavior (54.42%), eating behavior (34.95%), shifting behavior (6.37%), other behavior (2 ,6%), sleeping behavior (1,28%), self-playing behavior (0.79%) and social behavior (0.37%). During the COVID-19 pandemic (in 2021) there was an increase in the percentage of resting behavior (54.42%), sleeping (1.28%), social (0.37%), playing alone (0.79%) and others ( 2.6%) compared to the results of research before the covid-19 pandemic (in 2018) namely resting behavior (33.1%), sleeping (0.05%), social (0.26%), playing alone (0.6%) 1%) and others (2.45%). Meanwhile, the results of observations of the daily behavior of the Timor deer at the Tahura WAR Deer Captivity during the covid-19 pandemic (in 2021) showed a decrease in the percentage of eating behavior (34.95%) and moving (6.37%) compared to before the covid-19 pandemic (year). 2018) with the value of eating behavior (54.05%) and shifting behavior (9.99%). The difference in daily behavior shown to Timor deer in captivity is due to a decrease in the number of visitors due to the pandemic.
IMMUNOSTIMULATORY EFFECT OF VITAMIN C ON MICE INDUCED BY STAPHYLOCOCCUS AUREUS Khairani, Iffa Afiqa; Riana, Elisa Nurma; Maretta, Gres; Azizah, Najla Nur; Putri, Isnaini Anggraini; Maruli, Berkat Afni; Mulyadi, Salsa Pratiwi; Antonius, Antonius
MAXIMUS: Journal of Biological and Life Sciences Vol. 1 No. 2 (2023)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/maximus.v1i2.1636

Abstract

Several compounds that can boost immune activity (immunostimulatory) include vitamin E, curcumin, flavonoids, and vitamin C. In this study, ascorbic acid or vitamin C, was used as one method to enhance the immune system. This study aims to determine the immunostimulatory effect of vitamin C on the phagocytosis activity of macrophages in mice induced by Staphylococcus aureus. The mice were divided into two groups: the control group, which received 0.3 ml of distilled water orally, and the treatment group, which received 0.036 mg/g BW of vitamin C orally for 14 days. On the 15th day, each mouse was intraperitoneally induced with 0.5 mL of Staphylococcus aureus bacterial suspension and left for two hours. The phagocytic activity value represents the percentage of active macrophage cells among all macrophages observed. The result showed that the value of % phagocytic activity in the control group was 21.43% ± 7.92, whereas the % phagocytic activity in the treatment group was 48.31% ± 22.27. The group of mice given vitamin C 0.036 mg/g BW orally showed increased phagocytic activity compared to the control group mice. This shows that vitamin C has potential as an immunostimulator.
Variasi Kualitas Tidur dan Kreativitas pada Mahasiswa Institut Teknologi Sumatera Nurhayu, Winati; Tumangger, Juliana Esteria; Maretta, Gres; Darmawan, Andy
MAXIMUS: Journal of Biological and Life Sciences Vol. 2 No. 1 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/maximus.v2i1.1662

Abstract

Tidur adalah salah satu kebutuhan dasar manusia yang termasuk dalam kebutuhan fisiologis. Kualitas tidur merujuk pada kondisi yang dialami seseorang untuk mencapai kesegaran dan kebugaran setelah bangun tidur. Terdapat dua fase dalam tidur, yaitu fase Rapid Eye Movement (REM) dan fase Non Rapid Eye Movement (Non REM). Pada fase tidur Non REM, terjadi penurunan norepinefrin yang diduga berperan dalam meningkatkan kreativitas tertentu. Penelitian ini bertujuan untuk menginvestigasi variasi kualitas tidur dan kreativitas pada mahasiswa Institut Teknologi Sumatera (ITERA). Penelitian dilakukan dengan wawancara menggunakan kuesioner yang meliputi pendataan demografi, Pittsburgh Sleep Quality Index (PSQI) untuk menentukan kualitas tidur, dan Adjective Check List (ACL) untuk menentukan sifat kreativitas responden. Hasil penelitian menunjukkan bahwa kualitas tidur mayoritas mahasiswa ITERA cenderung buruk. Selain itu, juga terdapat temuan bahwa mahasiswa ITERA umumnya memiliki sifat yang mengarah tidak kreatif. Namun, menariknya, ditemukan bahwa mahasiswa ITERA dengan kualitas tidur yang buruk justru lebih banyak memiliki sifat kreatif.
Studi Penggunaan Dua Spesies Kuda Laut Hippocampus kuda dan Hippocampus comes untuk Produksi Benih di Balai Besar Perikanan Budidaya Laut (BBPBL) Lampung Wandasari, Septi Putri; Maretta, Gres; Al Qodri, Ali Hafiz
MAXIMUS: Journal of Biological and Life Sciences Vol. 2 No. 1 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/maximus.v2i1.1736

Abstract

Kuda laut merupakan salah satu komoditas ikan yang memiliki nilai jual tinggi karena memiliki bentuk yang unik dan banyak dimanfaatkan sebagai obat tradisional menyebabkan permintaan pasar ekspor akan kuda laut meningkat sehingga saat ini status konservasi tergolong dalam apendiks II dan dibatasi dalam perdagangan internasional. Untuk mencegah hal tersebut, dilakukan upaya budidaya untuk pelestarian kuda laut. Balai Besar Perikanan Budidaya Laut (BBPBL) Lampung merupakan unit pelaksana teknis yang melakukan kegiatan budidaya kuda laut karena itu melakukan praktik kerja dengan tujuan membandingkan penggunaan dua jenis kuda laut dalam produksi benih unggul untuk mencapai produksi yang maksimal. Metode pengambilan dan pengolahan data yaitu melalui data primer dengan melakukan observasi dan mengikuti kegiatan di BBPBL dan data sekunder dilakukan dengan pengumpulan data melalui studi literatur pustaka berupa jurnal artikel dan e-book. Prosedur yang dilakukan meliputi persiapan wadah, pemeliharaan, pengambilan sampel dan pengujian kualitas udara. Hasil yang diperoleh dari sampling Hippocampus kuda betina memiliki rata-rata panjang 17,9 cm dengan rata-rata bobot 13,1 gram dan jantan 18 cm dengan rata-rata bobot 17,65 gram, Hippocampus betina memiliki rata-rata panjang 16, 05 dengan rata-rata bobot 10 gram dan jantan 16,35 dengan rata-rata bobot 8,7 gram. Kelangsungan hidup induk kuda 50% dan datang 96,30% sedangkan kelangsungan hidup benih kuda 48,74% dan benih datang sebesar 90,23%, sehingga spesies yang paling bagus untuk dibudidayakan adalah jenis datang. Kata kunci: Hippocampus kuda, Hippocampus datang
Laboratory Scale Brachionus plicatilis Culture Technique with Natural Feeds Nannochloropsis oculata and Tetraselmis chuii in Marine Aquaculture Center Lampung, Teluk Pandan, Pesawaran: Laboratory Scale Brachionus plicatilis Culture Technique with Natural Feeds Nannochloropsis oculata and Tetraselmis chuii in Marine Aquaculture Center Lampung, Teluk Pandan, Pesawaran Ramadhani, Desvita Putri; Maretta, Gres
MAXIMUS: Journal of Biological and Life Sciences Vol. 2 No. 2 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/maximus.v2i2.1757

Abstract

A very influential factor in marine fish production is the provision of efficient and appropriate feed and feed management for marine fish larvae. Natural feed has content that can meet the nutritional needs of marine fish larvae. One of the natural feeds that can be utilized in marine fish farming is rotifer (Brachionus plicatilis). This study aims to determine the laboratory scale culture technique of Brachionus plicatilis, determine the growth rate of Brachionus plicatilis with different phytoplankton feeding, determine the optimal phytoplankton density for Brachionus plicatilis. Data collection techniques in this study used 2 kinds of data, namely primary data and secondary data. Primary data comes from observation, interviews, and active participation. While secondary data comes from literature studies, namely books, journals, annual reports, theses, and so on. Laboratory-scale Brachionus plicatilis culture starts from sterilization of tools and materials, planting Brachionus plicatilis seedlings, feeding, and calculating the population of Brachionus plicatilis. Brachionus plicatilis fed with Nannochloropsis oculata at a density of 100,000 cells/ml entered the exponential phase on day 4 with a total number of individuals of 72 ind/ml, while Brachionus plicatilis fed with Tetraselmis chuii at a density of 3000 cells/ml entered the exponential phase on day 5 with a total number of individuals of 100 ind/ml.
Variasi Ukuran Payudara sebagai Daya Tarik Fisik Perempuan di Masyarakat Lampung Nurhayu, Winati; Luxiana, Eri; Darmawan, Andy; Mulyana, Jeane Siswitasari; Maretta, Gres
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
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.v11i2.8955

Abstract

Sexual selection occurs when living organisms, including humans, exhibit specific preferences for morphological traits related to health and fertility when choosing a mate. Various physical characteristics such as body size and shape, leg length, skin color, hair length and color, facial features, and breast size contribute to the physical attractiveness of females in mate selection. Breasts can serve as a particular attraction for males, as they are believed to be associated with health and fertility for reproductive purposes. Sexual selection leads to a range of breast sizes, from small to large, within a population. The aim of this research is to investigate the variation in breast size preferences among females in the Indonesian society, specifically in Lampung. The study was conducted by distributing both online and offline questionnaires randomly with breast size stimuli in the form of images. Descriptive data analysis was employed to examine the variation in breast size preferences. Very large breast sizes were considered healthy and feminine by respondents, while medium sizes were deemed attractive. Married male respondents preferred larger breast sizes on average compared to unmarried respondents. Higher-income respondents tended to select larger breast sizes. Respondents with lower educational backgrounds tended to prefer smaller breast sizes. Respondents residing in rural areas preferred larger breast sizes compared to those living in urban areas. In conclusion, sexual selection applied among the population of Lampung in the context of breast size preferences.
Pengaruh Status Gizi terhadap Jangka Reproduksi Perempuan pada Tiga Kecamatan di Kabupaten Lampung Selatan: The Influence of Nutritional Status on the Reproductive Period of Females in Three Sub-Districts South Lampung Regency Nurhayu, Winati; Restina, Syefia Azmi; Maretta, Gres
Jurnal Sumberdaya Hayati Vol. 10 No. 1 (2024): 2024
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.10.1.33-40

Abstract

The maturity of women's reproductive organs can be characterized by the onset of the first menstruation, known as menarche, while the concluding phase is referred to as menopause. The time frame spanning from menarche to menopause is known as the reproductive period. One crucial factor influencing the reproductive period is nutritional status. Optimal body fat reserves tend to extend the reproductive period, whereas inadequate reserves can have the opposite effect. Notably, women residing in urban areas often experience a more extended reproductive period compared to their rural counterparts. The aim of this study was to assess the reproductive period of women in three sub-districts in South Lampung and to analyze the potential impact of nutritional status on the individual reproductive period. The study was conducted between January and April 2023 in the sub-districts of Jati Agung, Natar, and Kalianda. Data was gathered from a total of 57 respondents through interviews and physical measurements. Nevertheless, only 18 respondents met the criteria and were further analyzed. Nutritional status was evaluated using the body mass index (BMI) and percent body fat (PBF). The findings revealed that the average reproductive period for women in the three South Lampung sub-districts was 37.06 years. The average age for menarche was 14.22 years, while the average age for menopause was 51.28 years. However, the study did not find a significant correlation between nutritional status and the reproductive period of women in the three examined sub-districts of South Lampung.
STRUKTUR KOMUNITAS PLANKTON KERAMBA JARING APUNG DI TELUK LAMPUNG Gres Maretta; Desri Yohanna Christiani Nainggolan; Andy Darmawan
Jurnal Inovasi Pendidikan dan Sains Vol 4 No 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v4i1.1477

Abstract

Plankton is the most important component in aquatic life which plays an important role as the earliest link in the food chain. Plankton into two, namely animal plankton is referred to as zooplankton and plant plankton is referred to as phytoplankton. The purpose of this study was to determine the structure of the plankton community in floating net cages (KJA). The research was carried out in February-April 2022 in the waters of the Floating Net Cages in Lampung Bay. The method used is purposive sampling method. Sampling was carried out based on stations, namely station 1 (located at a location with a higher number of KJA), station 2 (located at a location with a smaller number of KJA), station 3 (located at a location where there were no KJA). The data obtained were analyzed for Diversity and Dominance. The highest diversity index was found at station 3 which reached 3,26 at station 3, while the highest dominance index value reached 0,047 at station 2. The number of species found in floating net cages was 29 genera, 17 phytoplankton and 12 genera of zooplankton . The dominant phytoplankton is Skeletonema and the dominant zooplankton is Naupilus.
Co-Authors Agung Prastyo, Agung Agustin, Karista Sandra Ahmad Fadhil Al Qodri, Ali Hafiz Alimiah, Umi Syahadah Andri Jaya Kesuma ANDY DARMAWAN Andy Darmawan Andy Darmawan Andy Darmawan Aniesti, Frigia Rafilia Antonius Antonius Ashafila, Tsalsha Astuti, Ayu Widia Aulia, Hana Aulia, Hana Azizah, Najla Nur Azmi, Sarah Bambang Sri Anggoro Bobby Permana Putra Desi Budiono Desri Yohanna Christiani Nainggolan Dewi Chusniasih Dian Anggria Sari Dian Anggria Sari Dwiki Sigap Satrio Dylla Alya Putri Edriani, Tiara Shofi Edy Soewono Eko Kuswanto Enjelina, Rohani Fajri Arif Wibawa Fatriani, Rizka Ferdinanda, Thierry Hana Aulia Handayani, Sri Astuti Fiteri Hariyandi, Yopi Hidayat, Thaariq Hutauruk, David Iffa Afiqa Khairani Ika Fitriya Jeane Siswitasari Mulyana Jeane Siswitasari Mulyana Jeane Siswitasari Mulyana Khaerunissa Anbar Istiadi Khusnul, Ramadhan Kumara, Latif Kurnia Wahyu Kurnia Wahyuni Leksikowati, Sovia Santi Lilis Martines Manurung Lily Arseliana Lisana Husna Imaniar Luxiana, Eri Marhaeni, Agustina Marpaung, David Septian Sumanto Maruli, Berkat Afni Maulana, Muhammad Aqil Melinia, Nur Astri Mufidah, Zunanik Muhammad Zulhiyadi Nanda Mulyadi, Salsa Pratiwi Mulyana, Jeane Siswitasari Nella Indry Septiana Nisa Yulianti Suprahman Nisa, Fadinda Khoirun Novriadi Novriadi, Novriadi Novrianti, Rima Arini Nur Intan Septikayani Nurcahya, Gebriel Nurhadi Ramadhan Nurhaida Widiani Nurhaida Widiani Hasan Nurhayu, Winati Nurul Adhha Nurul Adhha Putri, Claudia Tiara Putri, Isnaini Anggraini Ramadhani Eka Putra Ramadhani, Desvita Putri Ramadhani, Untia Kartika Sari Restina, Syefia Azmi Riana, Elisa Nurma Rifky Fauzi Rizka, Nela Rizki Fajar Andrian Rizki Fajar Andrian, Rizki Fajar Rohid Morantana Perhiba Simamora Sadira Maharani Putri Saefudin Saefudin Saeli, Pinka Mustika Sari, Dian Anggria Sari, Dian Anggria Sari, Rara Mulia Satrio, Dwiki Sigap Septikayani, Nur Intan Simanullang, Gayatri Simon Martinus Sinaga, Ayu Oshin Yap Sofyan, Ichvan Sri Haryani Styaningrum, Amalia SUBKI Suryanti, Erma Syafitri, Dewi Rana Syarifah Setianingrum Syarifah Setianingrum Syarifah Setianingrum, Syarifah Tumangger, Juliana Esteria Umi Syahadah Alimiah Untia Kartika Sari Ramadhani Utami, Riani Utriweni Mukhaiyar Wandasari, Septi Putri Winati Nurhayu Yanti Ariyanti Yanti Ariyanti, Yanti Ariyanti Zahra, Anisa Mumtaz Zihad, Benny Pramana