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All Journal Jurnal Akuakultur Indonesia Jurnal Penelitian Pertanian Terapan Jurnal Biologi Tropis Jurnal Laut Khatulistiwa Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan e-Jurnal Rekayasa dan Teknologi Budidaya Perairan
Herman Yulianto
Jurusan Budidaya Perairan Fakultas Pertanian Unila
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Energy Immunology & microbiology Physics Other

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Analisis Ekologi Teluk Cikunyinyi Untuk Budidaya Kerapu Macan (Epinephelus Fuscoguttatus) Randy, Dwi Saka; Hasani, Qadar; Yulianto, Herman
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Vol 3, No 1 (2014)
Publisher : University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.782 KB)

Abstract

Perkembangan budidaya kerapu macan (Epinephelus fuscoguttatus) di Pantai Ringgung Kabupaten Pesawaran cukup pesat. Kondisi tersebut mengisyaratkan budidaya kerapu macan di Pantai Ringgung diprediksi akan terus meluas. Salah satu perairan yang terdekat dengan Pantai Ringgung adalah perairan Teluk Cikunyinyi. Pemilihan lokasi yang tepat merupakan indikator keberhasilan suatu usaha budidaya, oleh karena itu perlu dilakukan analisis tentang kesesuaian perairan untuk keberlangsungan suatu usaha budidaya. Tujuan dari penelitian untuk mendeskripsikan kondisi ekologis perairan Teluk Cikunyinyi dan menganalisis tingkat kesesuaian kualitas perairannya untuk budidaya kerapu macan. Penelitian dilaksanakan pada Oktober-November 2013. Analisis kualitas air dilaksanakan di Laboratorium Kesehatan Ikan dan Lingkungan Air, Balai Besar Pengembangan Budidaya Laut Lampung dengan menggunakan 8 lokasi sebagai lokasi pengambilan sampel air. Metode dalam penelitian ini adalah metode deskriptif eksploratif. Sedangkan metode penentuan lokasi titik pengambilan contoh menggunakan metode purposive sampling. Analisis data dalam penelitian ini menggunakan metode matching dan skoring. Hasil penelitian menunjukkan Teluk Cikunyinyi memiliki tingkat kesesuaian disebut sesuai marginal (marginally suitable). Sesuai marginal menunjukkan Teluk Cikunyinyi  memerlukan penanganan lebih lanjut jika ingin dijadikan lokasi budidaya. Peubah primer berupa  material dasar perairan diperkirakan tidak sesuai untuk perkembangan budidaya kerapu macan. Peubah sekunder berupa kandungan nitrat dan fosfat diperkirakan tidak sesuai untuk pertumbuhan kerapu macan. Rekayasa lingkungan Teluk Cikunyinyi diperlukan untuk mengurangi pengaruh keterbatasan peubah primer dan sekunder misalnya dengan transplantasi terumbu karang.
PEMETAAN SEBARAN SPASIAL KUALITAS AIR UNSUR HARA PERAIRAN TELUK LAMPUNG Yulianto, Herman
AQUASAINS Vol 2, No 1 (2013)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Lampung Bay plays an importantrole for the terestriel area that surroundsit. Run Of any river that containdomestic waste into the Lampung Bayhas threatened the water quality condition.The purpose of the research is to analyzewater quality and nutrient horizontal distributionin Lampung Bay.This research washeld in April 2012, where spatial and temporalsurvey methods was used in this researchby performing a direct physical andchemical measurement. The results showeda range of water quality and nutrient compositionin the Lampung Bay as follows:temperature 28.9 - 31oC, depth 13 - 42,8m, visibility 5 - 16.5 m, Current speed 5 -35 m/s, pH 8.02 - 8.64, salinity 33o/oo, SuspendedSolid 27 - 86 mg/l, Dissolve oxygen4,62 - 6.78 mg/l, Nitrate 0.002 - 0.38 mg/land phosphat 0.01 - 0.48 mg/l. At Overall,nutrient composition shown a narrowrange, however condition of water qualitystill in normal condition
Diversity and Condition Analysis of Coral Reef in Lahu Besar Island, Ringgung, Pesawaran District Utomo, Deny Sapto Chondro; Yulianto, Herman; Yuliana, Darma
AQUASAINS Vol 4, No 2 (2016)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.542 KB)

Abstract

The aims of this study is to determine the diversity and condition of coral reef ecosystems in the island of Lahu Besar, Ringgung. Some parameters were observed are percent cover and condition of coral reefs, composition and density of coral species, and water quality include salinity, temperature, clarity, waters current, pH, and sedimentation. The surface temperature at the time of observation average of 30-31 oC and salinity of sea water an average of 32 - 34 o/oo. The clarity in the study area is 5 meters. Distribution of reefs founded in the Lahu Besar bay to ± 10 m in depth. The substrate dominated by sand and dead coral. The Percent cover of live coral is about 10.5 to 52.9%. The other form of covered substrate consist of Enhalus acoides, Sargassum echinocarpum andHalimeda micronesica. The results showed that the density of the dominant species of coral stones at each station is about 0.1 to0.63 ind / m. The coral reef was dominated in Station I was kind of Acropora nobilis, Station II is Montipora florida, and Station III is Acropora nobilis and Acropora formosa. Diversity index values  obtained at each station is about 0.80 to 1.68.
Pengaruh Pemaparan Medan Magnet Pada Media Mandels Yang Dimodifikasi Terhadap Pertumbuhan Dan Aktivitas Enzim Selulase Bacillus Sp. hernawati, wayan; sumardi, sumardi; agustrina, rochman; yulianto, herman
Jurnal Penelitian Pertanian Terapan Vol 16, No 2 (2016)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.1 KB) | DOI: 10.25181/jppt.v16i2.87

Abstract

Enzymes can undergo structural changes due to various environmental factor such as pH,temperature, electricity and magnetic fields. The purpose of this study was to investigate theeffect of magnetic field strength and duration of exposure to the modified of media Mandelsused as a culture medium of Bacillus sp. on the growth and activity of cellulase enzyme fromthe bacterium Bacillus sp. Factorial study group were prepared using the method of fullrandomized design (RKLT). The first factor is the strong magnetic field consists of 4 levels ofmagnetic field strength treatment: 0 mT; 0,1 mT; 0,2 mT; 0.3 mT. The second faktor is theprolonged exposure consisting of 4 levels prolonged exposure treatments 0, 10, 20, 30minutes. each unit treatment was repeated 3 times. The results showed that exposure tomagnetic fields on modified of media Mandels causes a decrease in the relative activity ofthe enzyme cellulase and relative growth of Bacillus sp.Keywords: cellulase enzyme, magnetic field, Mandels modification, Bacillus sp.
EFFECT OF Pilsbryoconcha exilis AS ORGANIC MATTER REMOVAL IN THE RECIRCULATING AQUAPONIC SYSTEM Yulianto, Herman; Delis, Putu Cinthia; Damai, Abdullah Aman; Diantari, Rara; Suparmono, Suparmono; Penmau, Defrilasio Eldes; Febriani, Sefia
AQUASAINS Vol 7, No 2 (2019)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (552.205 KB) | DOI: 10.23960/aqs.v7i2.p725-734

Abstract

Aquaponics is a combination of aquaculture and hydroponics system. This system is expected to be able to overcome the problems of waste from aquaculture by utilizing Nitrogen (N) and Phosphorus (P) for vegetables. There are several obstacles found in aquaponics systems such as high suspended organic matter produced from the feed residue and fish metabolism. The addition of natural filters, namely freshwater mussels (Pilsbryoconcha exilis) is expected to solve these problems. This research was conducted for 40 days. The design used in this study was Factorial Completely Randomized Design with two main factors namely mussels density as factor-A and time of observation as factor-B. The treatments were P1 (0 mussels density), P2 (15 mussels density), and P3 (30 mussels density) for factor-A while time of observation were factor-B (D-0, D-10, D-20, D-30 and D-40). Each treatment was conducted in three repetition. The results showed that the time observation gave significantly different on water condition changes (P <0.05), which will increase TSS, turbidity and chlorophyll value along with the increasing of time. P exilis in aquaponics was effective in reducing turbidity and chlorophyll concentration (P <0.05). Therefore, aquaponics system with the highest mussels density (P3) with has lower turbidity and chlorophyll value than the one with 0 mussels density (P1). 
THE EFFECT OF IMMERSION OF MANGROVE Avicennia alba (Tomlinson, 1986) LEAF EXTRACT WITH DIFFERENT CONCENTRATIONS IN PREVENTING BACTERIAL DISEASE Vibrio harveyi (Johnson & Shunk, 1936) IN VANAME SHRIMP (Litopenaeus vannamei) (Boone, 1931) Farida, Eka Nur; Diantari, Rara; Harpeni, Esti; Wardiyanto, Wardiyanto; Hasani, Qadar; Yulianto, Herman; Yusuf, Maulid Wahid; Susanti, Oktora
e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Vol 8, No 2 (2020)
Publisher : University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (169.304 KB) | DOI: 10.23960/jrtbp.v8i2.p1001-1008

Abstract

Vibriosis is a disease that often attack shrimp culture, some of the most dangerous types of Vibrio bacteria are V. harveyi. The use of natural materials is an alternative that can be applied to prevent bacterial disease. One of the mangrove species that has an antibacterial compound is A. alba. A. alba has alkaloid, saponins, and flavonoids compounds that can inhibit the function of cytoplasmic membranes and energy metabolism in bacteria. This study was conducted to determine the effectiveness of A. alba leaf extract A. alba in inhibiting V. harveyi disease in vaname shrimp (Litopenaeus vannamei). This research was conducted in several stages, namely extraction of mangrove leaves, both in vivo and in vitro. The highest SR, RPS and MTD values were obtamed at a concentration of 250 mg/l with each value of 80 %, 60 %, 75th respectively hour. Mangrove leaf extract A. alba was able to prevent diseases caused by the bacteria V. harveyi, with the best results at an extract concentration of 250 mg/l where the concentration can significantly higher SR, RPS, and MTD compared to other treatments.
Coral Reef Fishes Biodiversity In Pahawang Island,Pesawaran District Lampung Yuliana, Darma; Rahmasari, Ayu; Yulianto, Herman; Damai, Abdullah Aman
AQUASAINS Vol 9, No 1 (2020)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v9i1.p887-892

Abstract

The components of coral reef ecosystem can be described by the unique regulation in community level. Coral reef fishes use coral reef as their habitat and they highly depend on coral reef health. Otherwise, the condition of coral reef health can be predicted by the biodiversity of coral reef fishes. The research aim was describe communities differences between two explored area in marine tourism spots in Pahawang Island. This research was conducted on November 2019 at two stations on the coral reefs ecosystem of Pahawang Island represented the two quitely different area, the marine tourism and the visitor areas.  The coral reef fishes were observed by using visual census method with a Line Transect length of 30 meters and a visibility of 2.5 meters left and right of the transect.  Coral reef fish community structure was measured by diversity, similarity, and dominancy indexes. A total of 1.940 coral reef fish species from 13 families were recorded. Pomacentridae is the most speciose family (1.091 species), followed by Siganidae (308 species) and Labridae (166 species). Biodiversity of coral reef fishes at Pahawang Island showed results diversity index (H') in both observation stations classified as medium with a low dominance index value (C) and similarity index (E)  at both stations classified as high, presumably as a result of tourism activities. The diversity index at station 2 has a greater value than station 1 as a tourist area with diving and snorkeling tourism activities, at station 2 there are more types or genus of reef fish, compared to station 1.
Suitability analysis of Lampung Bay waters for grouper Epinephelus sp. farming activities Yulianto, Herman; Hartoko, Agus; Anggoro, Sutrisno; Hasani, Qadar; Mulyasih, Dwi; Delis, Putu Cinthia
Jurnal Akuakultur Indonesia Vol. 16 No. 2 (2017): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3767.377 KB) | DOI: 10.19027/jai.16.2.234-243

Abstract

ABSTRACT Grouper Epinephelus sp. farming activities in Lampung Bay is limited to an area of 77 hectares, while areas that are potential to be used for grouper farming are still very wide. Therefore, this study aimed to assess the suitability of Lampung Bay waters for grouper farming activities. The study was conducted in 20 stations with ecological preference considerations. The parameters observed were physicochemical (water depth, temperature, water transparency, the load of suspended solids, pH, dissolved oxygen, salinity, nitrate, and phosphate) and biological parameters (phytoplankton abundance and chlorophyll-a concentration). After the data were completely obtained, the data were processed into suitability matrix resulting in scores that will be grouped into four classes, namely S1 (highly suitable), S2 (moderately suitable), S3 (marginally suitable), N (not suitable). The geostatistical model was used to perform the earth’s surface mapping based on biotic and abiotic parameters that were analyzed. Based on the results of the analysis in this study, the conditions of Lampung Bay waters were suitable for grouper farming activities. Marine area that could be used for grouper farming was 33,847.12 hectares (S1: 15,712.6 ha, S2: 13,294.7 ha and S3: 4,209.82 ha) in the area around Puhawang Island, Kelagian Island, Maitem Island, Tegal Island to Hurun Bay. Keywords: Lampung Bay, grouper, suitability analysis, fish farming   ABSTRAK Kegiatan budidaya ikan kerapu Epinephelus sp. di Teluk Lampung masih terbatas pada lahan seluas 77 hektar, sedangkan lahan yang berpotensi digunakan untuk budidaya ikan kerapu masih sangat luas. Oleh karena itu, penelitian ini bertujuan mengkaji kesesuaian perairan Teluk Lampung untuk kegiatan budidaya ikan kerapu. Penelitian dilakukan di 20 stasiun dengan pertimbangan ecological preference. Parameter yang diamati yaitu parameter fisika-kimia perairan (kedalaman, suhu, kecerahan, muatan padatan tersuspensi, pH, oksigen terlarut,  salinitas, nitrat, dan fosfat) serta parameter biologi (kelimpahan fitoplankton dan konsentrasi klorofil-a). Setelah data parameter terpenuhi, data diolah ke dalam matriks kesesuaian sehingga menghasilkan skor yang akan dikelompokkan ke dalam empat kelas, yaitu S1 (highly suitable), S2 (moderately suitable), S3 (marginally suitable), N (not suitable). Model geostatistik digunakan untuk melakukan pemetaan permukaan bumi berdasarkan data parameter biotik dan abiotik yang dianalisis. Berdasarkan hasil analisis pada penelitian ini, kondisi perairan Teluk Lampung sesuai untuk kegiatan budidaya ikan kerapu. Luas perairan laut yang dapat digunakan untuk kegiatan budidya ikan kerapu yaitu, 33.847,12 hektar (S1: 15.712,6 ha, S2: 13.294,7 ha dan S3: 4.209,82 ha) di daerah sekitar Pulau Puhawang, Pulau Kelagian, Pulau Maitem, Pulau Tegal hingga Teluk Hurun.   Kata kunci: Teluk Lampung, ikan kerapu, analisis kesesuaian, budidaya
STRUCTURE OF THE MOLLUSK COMMUNITY IN THE INTERTIDAL ZONE OF TIRTAYASA BEACH, WAY TATAAN VILLAGE, TELUK BETUNG TIMUR DISTRICT, BANDAR LAMPUNG Trias, Silke; Yulianto, Herman; Kartini, Nidya
AQUASAINS Vol 13, No 2 (2025): March 2025
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/aqs.v13i2.p1632-1642

Abstract

Tirtayasa Beach is a coastal tourism attraction in Bandar Lampung City, located in Way Tataan Village, East Teluk Betung District. The waters of Tirtayasa Beach have significant tourism potential due to their natural beauty. However, a decline in water quality, caused by increased human activities and domestic waste input around the beach, has affected the physical, chemical, and biological conditions of the waters. Mollusks can serve as indicators of water quality. Therefore, the structure of the mollusk community can be used to assess the condition of these waters. This study aimed to evaluate the structure of mollusk populations and analyze the influence of water quality on mollusk communities in the intertidal zone of Tirtayasa Beach, East Teluk Betung District, Lampung. The selection of study locations/stations and observation points was carried out using the purposive sampling method. The mollusks identified in the waters of Tirtayasa Beach belong to two classes: Gastropoda and Bivalvia. The Gastropoda class, with eight species, dominated across the three stations, with Cerithium kobelti being the most prevalent species. The parameter that significantly affected mollusk abundance at Station 1 was pH. At Station 2, depth, brightness, dissolved oxygen (DO), and salinity were influential. At Station 3, total suspended solids (TSS) and temperature were the key influencing factors.  Keywords: Abundance, biodiversity, evenness index, principal component analysis.
Population Dynamics of Yellowstripe Scad (Selaroides leptolepis) in Lampung Bay Waters Kartini, Nidya; Yudha, Indra Gumay; Yulianto, Herman; Caesario, Rachmad; Julian, David
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7578

Abstract

Yellowstripe scad (Selaroides leptolepis) is a type of pelagic fish that is dominantly caught in the waters of Lampung Bay and is landed at the Lempasing Coastal Fisheries Harbor. The high market demand for yellowstripe scad means fishing for this fish is carried out throughout the year. The aim of this research was to analyze the population dynamics of yellow trevally (Selaroides leptolepis) in the waters of Lampung Bay. The yellow trevally fish collected during the research came from fishermen's catches in the waters around Lampung Bay. The study's findings demonstrated that the yellow trevally's development pattern was negative allometric, and its condition factor value varied between 0.7509 and 1.0842.  the growth parameters of yellowstripe scad obtained an asymptotic length (L∞) value of 152 mm, the growth coefficient (K) of 0.57/year, and theoretical age (t0) of -0.2191 years. Yellow trevally have a natural mortality value (M) of 0.80 per year, a fishing mortality value (F) of 1.12 per year, and a total mortality value (Z) of 1.92/year. Yellowstripe scad recruitment peaked in the Sunda Strait between May and September, at 18.19% and 13.90%, respectively.
Co-Authors Abdullah Aman Damai Agus Hartoko Caesario, Rachmad David Julian Delis, Putu Chintia Delis, Putu Cinthia Deny Sapto Chondro Utomo Dwi Mulyasih Esti Harpeni Farida, Eka Nur Febriani, Sefia Indra Gumay Yudha KARTINI, Nidya Muhammad Reza Penmau, Defrilasio Eldes Putriani, Rizha Bery Qadar Hasani Rahmasari, Ayu Randy, Dwi Saka Rara Diantari rochman agustrina, rochman Sumardi . Suparmono Suparmono Susanti, Oktora Sutrisno Anggoro Trias, Silke Wardiyanto Wardiyanto, Wardiyanto wayan hernawati, wayan Yuliana, Darma Yuliana, Darma Yusup, Maulid Wahid