HighlightsEleutherine americana was a plant that was known to contain antibacterial alkaloids, steroids, phenolics, and flavonoidsEleutherine americana extract was able to inhibit the development of V. harveyi both through in vitro and in vivo tests on tiger shrimp (Penaeus monodon).The use of vibriosis antibiotics in tiger shrimp was often not controlled so the results obtained were not effective AbstractThe use of vibriosis antibiotics in tiger shrimp was often not controlled, so the results obtained were not effective. The addition of antibiotics would cause resistance to V. harveyi. Eleutherine americana is a plant that is known to contain antibacterial alkaloids, steroids, phenols, and flavonoids. This study aimed to determine the effectiveness of inhibitory effects of E. americana extract against V. harveyi through in-vitro and in-vivo tests on tiger shrimp larvae. In-vitro testing consisted of 7 treatments and 3 replications, namely treatments A (0.1%), B (0.2%), C (0.3%), D (0.4%), E (0, 5%), F ethanol 70% (K-), and G chloramphenicol 0.01% (K +) treatment. The largest inhibition zone diameter of E. americana extract was shown in treatment C (0.3%), with an average value of the inhibition zone produced of 7.5 mm. Challenge test with V. harveyi concentration of 107 CFU / ml in the in-vivo test consisted of 5 treatments and four replications namely; A treatment without E. americana extract, B extract 6 ppm, C extract 12 ppm, D extract 18 ppm, and treatment E without extract and V. harveyi. The results of the challenge test with V. harveyi bacteria were significantly different in control (chloramphenicol 0.01%), where the highest survival rate was in the treatment of 12 ppm extract (43.34%). E. americana extract could inhibit the development of V. harveyi bacteria both through in-vitro and in-vivo tests on tiger shrimp (Penaeus monodon).
Pulau Bunyu di Propinsi Kalimantan Utara memiliki sumberdaya hayati ekosistem perairan laut yang berlimpah dan bernilai ekonomis yang tinggi, dimana masyarakat pulau Bunyu memanfaatkan potensi ekosistem perairan laut digunakan sebagai potensi perikanan dalam hal penangkapan dengan menggunakan alat tangkap bubu dasar (bottom fish pot). Hasil tangkapan yang bernilai ekonomis berupa ikan kakap merah dan ikan kerapu yang terdapat di perairan ekosistem laut pulau Bunyu. Tujuan penelitian adalah menganalisis pertumbuhan dan struktur ukuran ikan kakap merah (Lutjanus argentimaculatus) serta ikan kerapu lumpur (Epinephalus malabaricus) yang berasal dari perairan pulau Bunyu. Data yang diteliti berupa parameter pertumbuhan yaitu panjang total dan panjang standar, berat total, jenis kelamin, tingkat kematangan gonad, dan berat gonad. Hasil penelitian ikan kakap paling banyak tertangkap ukuran panjang 40,49-47,61 cm dan bobot 990,05-1.451,68 gram. Pada ikan kerapu lumpur dengan ukuran panjang 43,73-50,13 cm dan berat 800,94-1.308,70 gram. Sifat pertumbuhan pada ikan kakap merah adalah allometrik negatif. Nilai indeks kondisi berbentuk kurus pada sampel ikan kakap merah. Sifat pertumbuhan pada sampel ikan kerapu pada variabel panjang total dengan berat total bersifat allometrik positif dan pada variabel panjang standar dan panjang cagak dengan berat total bersifat allometrik negatif.
Tarakan memiliki sumberdaya hayati Pantai yang sesuai dengan ecological preference dari biota laut di Patai Binalatung yaitu kerang kapah, ikan, kepiting dan sebagainya. Besarnya potensi sumberdaya hayati laut yang tinggi harus di imbangi dengan melindungi habitat ekosistem biota tersebut terutama di daerah pantai Binalatung Kota Tarakan. Perlindungan habitat sangat penting bagi kelangsungan hidup biota laut sehingga biota laut sangat perlu dijaga kelestariannya dalam hal bersih-bersih lingkungan pantai terutama di daerah ekowisata pantai binalatung. Bersih-bersih pantai atau Coastal Clean-up merupakan kegiatan internasioal yang di kembangkan di daerah pantai untuk keberlangsungan dan perlindungan habitat ekosistem di daerah pantai. Kegiatan coastal clean-up telah dilaksanakan di daerah ekowisata Pantai Binalatung Kota Tarakan didapatkan 4 jenis sampah yang di sortir yaitu sampah dari masyarakat/warga, sampah dari budidaya rumput laut, sampah dari wisatawan, sampah dari alam. Sampah dari hasil bersih pantai sepanjang Kawasan Ekowisata Pantai Binalatung didapatkan sampah sebanyak 418,2 kg dengan komposisi distribusi jenis sampah berasal dari wisatawan sebesar 34,2 kg dengan persentase sebesar 8,2 % kemudian distribusi jenis sampah berasal dari rumput laut sebesar 138 kg dengan persentase sebesar 33,0 % kemudian distribusi jenis sampah berasal dari alam sebesar 237 kg dengan persentase sebesar 56,7% dan distribusi jenis sampah berasal dari industri sebesar 9 kg dengan persentase sebesar 2,2 %. Banyak masyarakat berminat dan tertarik dengan kegiatan ini karena merupakan salah satu bagian dari kesadaran dalam diri dalam menjaga lingkungan di sekitarnya.
The Covid-19 pandemic has had a major impact on society, such as job losses, rising staples, and economic hardship. Prices of food needs that continue to increase and are not affordable have resulted in food problems, one of which is protein. One of the high-quality protein is protein from fish. Fish as a fishery commodity that is relatively easy to cultivate on a large industrial scale and household scale for food self-sufficiency is catfish (Clarias sp). The purpose of this activity is to add insight and knowledge of the community about budikdamber for food self-sufficiency. The method of implementing community service activities in Kampung Six is carried out by counseling and training methods on Budikdamber. In this training activity, a bucket with 40 liters of water and 20 catfish seeds was used. Maintenance was carried out for 60 days with ad satiation feeding three times a day. Observations were made on growth, survival and water quality. The results of the activity found that 93% of the community partners had understood about Budikdamber. Budikdamber maintenance by partner communities gets an absolute weight growth value of catfish of 14 g, catfish survival value of 75%, and 1 bunch of kale per bucket. Based on the results of this activity, it is hoped that there will be the provision of special land for Budikdamber as an example for people who want to develop in their respective yards.
The level of absorption of fish nutrients is highly dependent on the source and components of the feed. Feeds with high protein have not been able to be absorbed optimally by fish. The use of synthetic enzymes as proteolytic agents to convert proteins into amino acids that are easily absorbed by fish has been widely used. However, synthetic enzymes has side effects and is quite expensive. The application of papain enzymes derived from papaya leaf as a substitute for synthetic enzymes is very necessary. This purpose of this study to examine the effect of commercial feed with the addition of papaya leaf meal (C. papaya) on the growth out of tilapia (Oreochromis niloticus). The study used a completely randomized design with 4 treatments and 3 replications. The feed treatment was given with a mixture of papaya leaf with 0%, 1%, 2%, and 3% concentrations. The result of this study showed tha absolute growth ranged from 1.04 – 1.36 grams, specific weight growth ranged from 3.47 – 4.53%, absolute length growth ranged from 2.52 – 2.87 cm, survival rate ranged from 63 – 80%, and FCR ranged from 0.93 – 0.99. However, after the analysis of variance showed that the results were not significantly different (P>0.05) on all observed parameters. Based on the results of the study, the use of papaya leaf meal (C. papaya) as a commercial feed mixture with the best composition was 2%.
Disease infection is one of the limiting factors that affect productivity in aquaculture and has caused economic losses. Luminescent vibrios and motile aeromonas septicemia (MAS) are diseases caused by Vibrio harveyi and Aeromonas hydrophila bacteria, respectively. Certain plants have antimicrobial compounds and can potentially be used to treat the diseases, such as Centella asiatica. In the present study, the crude leaves extracts of C. asiatica were examined for its antibacterial potential using methanol solvents against V. harveyi and A. hydrophila bacteria. Different concentrations of 50 mg/mL and 100 mg/mL were checked for its antibacterial activity. The crude extract was also tested for phytochemistry content and LC50 using Brine Shrimp Lethal Assay. The crude extracts of C. asiatica showed a remarkable antibacterial activity with inhibition zone of 10.57 mm against A. hydrophila and 21.14 mm against V. harveyi. The phytochemistry test result showed that C. asiatica leaves contain alkaloid, phenol, and tannin compounds. The acute lethal concentration (LC50) of C. asiatica after 24 hours exposure to the extract mixture was 254 mg/L. The results confirmed the potential use of C. asiatica extracts as a source of antibacterial compounds.
KKMB (kawasan konservasi mangrove bekantan) merupakan daerah yang unik karena terletak ditengah kota berada dekat pertokoan Mall Gusher, pasar tardisional dan kawasan industri perikanan sehingga kawasan ini berdampak terhadap kerusakan habitat biota perairan berada di Kota Tarakan Provinsi Kalimantan Utara. Akibat pola pikir masyarakat yang salah kaprah terhadap pengetahuan seperti sampah yang telah di buang ke laut maka sampah tersebut akan lenyap tertelan arus dan ombak sehingga sampah tersebut akan hilang, namun demikian hal ini tidak seusai dengan hasil pengamatan ilmu pengetahan dasar mengenai arus dan ombak yang menjelaskan bahwa apabila sampah plastik yang terbawa oleh arus laut yang tidak dapat terakumulasi ke dalam sedimen atau air maka sampah tersebut akan terbawa arus dan dalam beberapa tahun akan kembali lagi ke daerah tersebut. Kurangnya pengetahuan, kesadaran dan kepedulian para wisatawan lokal dan masyarakat dalam menjaga lingkungan kelestarian wilayah pesisir dengan tidak membuang sampah sembarangan masih menjadi masalah utama hingga sekarang.Kegiatan kampanye coastal clean-up merupakan kegiatan masyarakat dunia internasional yang bertujuan untuk menggalakkan kebersihan wilayah ekosistem bagi keberlangsungan biota perairan laut dalam mempertahankan spesies agar tidak endemic atau punah dengan perlindungan secara suistainable, dan kegiatan coastal clean-up ini merupakan kegiatan dalam memberikan kesadaran kepada masyarakat akan pentingnya habitat ekosistem perairan laut.Kegiatan coastal clean-up di KKMB kota Tarakan didapatkan 3 jenis sampah yaitu sampah dari wisatawan sebesar 18 kg dengan persentase 5,5%, sampah alam sebesar 79 kg dengan persentase sebesar 24,2% dan sampah dari buangan masyarakat sebesar 229,4 kg dengan persentase sebesar 70,28%. Kegiatan coastal clean-up untuk memberikan kesadaran dan kepedulian terhadap kelestarian ekosistem biota laut dengan di ikuti oleh peserta terbanyak berasal dari Bapak/Pria dewasa sebesar 40%, di ikuti oleh peserta wanita remaja sebesar 24%, serta pria remaja sebesar 16%, Wanita / Ibu dewasa sebesar 11% dan peserta sedikit adalah anak-anak sekitar 9%.
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