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INDONESIA
Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan
Published by Universitas Lampung
ISSN : 2301816X     EISSN : 25797638     DOI : -
Core Subject : Education,
Other
Arjuna Subject : -
Articles 221 Documents
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Pengaruh Padat Tebar Terhadap Pertumbuhan Dan Kualitas Udang Windu (Penaeus monodon) Pada Sistem Nurseri Aris Candra Prihantoro; Sri Waluyo; Yudha Trinoegraha Adiputra; Rara Diantari; Wardiyanto Wardiyanto
AQUASAINS Vol 3, No 2 (2015)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

The low productivity during extensive culture of tiger shrimp (Penaeus monodon) may caused by disability to environmental adaptation of shrimp during cultured period. Nursery system build up to minimize this constrains and enhances shrimp growth, quality and variation in natural pond system. Nursery system is cultured method to take care shrimp during post larvae to juvenile size within 14 days. The objective of this research is to measure the growth and the quality of post larvae shrimp during nursery system at different density which is 750; 1250; 1750 and 2250 shrimps/m2, respectively. The observation of juvenile quality was done to observe the digestive tract, weight variation, necrosis and parasite fouling. In the other side, growth observation was observed by the total length and the body weight. The result showedgrowth and quality of shrimp significantly differentwithin different density. In contrast survival rate of shrimp in differeny density not significantly different. The density of 750 shrimp/m2during nursery system in extensive  shrimp culture showed optimum in growth and quality.Shrimp production rose optimum size at 2250 shrimp/m2. The simulation of economic analysis  of shrimp production showed benefit to farmer in 1750 shrimp/m2 of density. This study support shrimp production in traditional method may increase with nursery system  and additional feed in short period (2 weeks).
The Effect of Sex Reversal Using 17α-Methyltestosterone Hormones Towards The Colour Intensity of Male XX And Female XYFighting Fish (Betta Sp.) Muhammad Perbriansyah; Tarsim Tarsim; Herman Yulianto; Berta Putri
AQUASAINS Vol 4, No 2 (2016)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Fighting fish (Betta sp.) is endemic fresh water fish of Southeast Asia that has become one of Indonesias export commodities. Male fighting fish has brighter colour then the female. Mono-sexual male fighting fish population can be obtained through sex reversal method (female to male). However, male fighting fish suspected sex reversal results will likely have a low color intensity. This study aims to determine the effect of sex reversal using 17α-methyltestosterone hormone toward colour intensity of male fighting fish with XX genotype as the results of sex reversal and the original male fighting fish XY genotype. The research design consisted of 2 treatments with 3 replications. The determination of the observations grade toward the colour intensity of fighting fish is done by comparing the original colour of the fish using coloured paper Modified Toka Colour Finder (M-TCF) which were observed by 5 observers for the accuracy of the data. The results showed that there is significant effect of sex reversal using 17α-methyltestosterone hormone toward the colour intensity of the male fighting fish XX to XY males. On the whole, the mean observed colour intensity for P1 (with sex reversal) is 18.33 and P2 (without sex reversal) is 28.33, it shows that the P1 has lower brightness than P2.
STUDY OF SUITABILITY AND ENVIRONMENTAL CARRYING CAPACITY FOR BARRAMUNDI (Lates calcarifer. Bloch) CULTURE IN WATERS OF LEMUKUTAN ISLAND AND PENATA BESAR ISLAND, BENGKAYANG REGION, WEST KALIMANTAN Shubhi, Muhammad Zamhar Auli; Kusumadewi, Yohana S; Suswati, Denah
AQUASAINS Vol 5, No 2 (2017)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

The aim of this research are to study location suitability for developing Asian Seabass culture with floating cage culture system based on carrying capacity at Lemukutan Island and Penata Besar Island. The methods of this research include : field survey for assessing the biophysics characteristic of Lemukutan and Penata Besar Island, Geographycal Information System for suitability analyze and carrying capacity analyze which compare to Kepmen LH No. 51 Years 2004. The results indicated that all the water quality parameters mostly good and suitable to support Asian Seabass culture. GIS results indicated that 1.564 Ha can be developed for Asian Seabass culture on the floating net cage, or arround 14,44% from the total 10.830,7 Ha with depth about more than 6 metres and less than 25 metres. Limited factor are sheltered area from the wave, wind and storm, current rate are generally more than 0,6 m/s and depth water some less than 6 m and more than 25 m. 
PERTUMBUHAN Tetraselmis Sp DI MEDIA KULTUR BERBEDA DENGAN PENAMBAHAN Pb2+ Astri Pujiastuti; Moh Muhaemin; Henni Wijayanti
AQUASAINS Vol 1, No 1 (2012)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Lead has known as toxic metal element in water environment which may come from domestic and industrial waste systems. Recent research proved that microalgae may reduce lead concentration by using bioaccumulation mechanism to the threshold level approximately. Tetraselmis is marine microalgae which has sensitive respond to heavy metal. The research aim was to determined the bioacumulation treshold effect of specific heavy metal (lead) on marine microalgae Tetraselmis sp. The research was conducted on July 2010 in BBPBL Hanura Lampung Province. The research was used two different media (TMRL and Conwy) and each treatment was added lead of 0,25 mg/l. Data was analyzed by using simple linier regression model to found the correlation between microalgae density and present of heavy metal. The result showed that the media has not significant effect on bioaccumulation ability of Tetraselmis sp. In the other hand, the present of heavy metal on media has positive correllation to initial concentration of heavy metal on microalgae biomass (rConwy=0,657; rTMRL=0,682).
Penapisan Bakteri Pendegradasi Total Ammonia Nitrogen dari Sedimen Tambak Tradisional Udang Windu (Penaeus monodon) Eva Susanti; Esti Harpeni; Agus Setyawan; Berta Putri
AQUASAINS Vol 2, No 2 (2014)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Bioremediasi merupakan salah satu upaya untuk mengurangi limbah tambak dengan memanfaatkan kemampuan mikroorganisme. Tujuan penelitian ini adalah untuk mendapatkan kandidat isolat bakteri bioremediasi yang mampu mendegradasi total ammonia nitrogen (TAN) dari sedimen tambak tradisional.  Sedimen didapat dari tiga tambak udang windu (Penaeus monodon) di Desa Mulyosari, Kecamatan Pasir Sakti, Kabupaten Lampung Timur, Provinsi Lampung dengan jarak tambak dari pantai yaitu antara 600 - 1800 m). Metode phenate digunakan untuk menguji pendegradasi TAN. Hasil penelitian menunjukkan terdapat tiga isolat bakteri terbaik yang mampu menurunkan kandungan TAN adalah TI6, TI1, dan TII5 sebanyak 0,10; 0,06 mg/l dan 0,06 mg/l secara berurutan. Ketiga isolat tersebut diidentifikasi sebagai genus Campylobacter, Listeria dan Nitrosococcus.
Profil Asam Amino Essensial Skeletonema costatum dalam Kultur Massal Menggunakan Media Kultur Teknis yang Berbeda Herawati, Vivi Endar; Hutabarat, Johannes
AQUASAINS Vol 3, No 1 (2014)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Skeletonema costatum adalah pakan alami yang banyak digunakan khusunya dalam budidaya udang, kandungan gizi yang tinggi, ukuran yang sesuai dengan bukaan mulut larva merupakan keunggulan dari Skeletonema costatum. Tujuan penelitian ini adalah untuk menemukan  perbedaan media kultur teknis (Walne dan Guillard) secara massal pada Skeletonema costatum terhadap pertumbuhan, lemak dan profil asam amino essensial. Metoda kultur yang digunakan adalah secara massal dengan dua media kultur teknis yang berbeda (Double Walne dan Guillard teknis), analisis lemak dilakukan dengan analisa proksimat dan profil asam amino essensial menggunakan HPLC Eurospher 100-5 C18, 250x4,6mm. Hasil penelitian menunjukkan bahwa media kultur yang terbaik adalah Guillard teknis dimana pertumbuhan pada Skeletonema costatum yaitu 86,75 x 104sel/ml dengan lama fase stasioner  52 jam, lemak 7,74%, profil asam amino essensial tertinggi pada Skeletonema costatum, yaitu asam amino Threonin yaitu 2359,05 ppm.  
POTENTIAL IMMUNOGENICITY OF BACTERIA Aeromonas hydrophila GPL-05 AND GL-02 STRAINS AS A CANDIDATE VACCINES Dini Siswani Mulia; Ani Khusniah; Heri Maryanto
AQUASAINS Vol 4, No 1 (2015)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Aeromonas hydrophila is very potential to be used in vaccines and disease control MAS (Motile Aeromonas Septicemia) caused by the bacteria. However, strains of A. hydrophila bacteria which have high immunogenicity limited. Not to mention, in the field often decrease the pathogenicity of the bacteria as vaccine material resulting in a decrease in the immunogenicity of a vaccine made. Therefore, it is necessary to inventory and collecting strains of A. hydrophila bacteria potentially good that vaccination continuity can be maintained. This study used an experimental method with a completely randomized design (CRD), with treatments such as P1: A. hydrophila vaccine strain GPL-05; P2: A. hydrophila vaccine strain GL-02; and P3: control (PBS), with five replicates.This study aims to assess the potential immunogenicity A.hydrophila bacterial strains as vaccine candidates. Test fish used is African catfish was about 2 months with a length of 10-15 cm and width 15-20 g. The main parameters are observed antibody titer and cross-reaction test, while supporting parameters are parameters of water quality include water temperature, pH, dissolved oxygen. Antibody titer data was analyzed by Analysis of Variance (ANOVA) and Duncan's Multiple Range Test (DMRT) at the test level of 5%, while the data and the results of cross-reaction of water quality parameters observed descriptively. The results showed that the bacteria A. hydrophila strain GPL-05 and GL-02 has a high immunogenicity, thus recommended a candidate vaccine.
ANALYSIS OF DIFFERENT NATURAL FEED CONSUPMTION ON GROWTH AND SURVIVAL RATE OF EEL (Monoptherus albus) IN CLEAR WATER SYSTEM Vivi Endar Herawati; Ristiawan Agung Nugroho; Tristiana Yunarti; Trisnani Dwi Hapsari; Pinandoyo Pinandoyo; Johannes Hutabarat
AQUASAINS Vol 5, No 2 (2017)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

This study used an experimental method with Completely Randomized Design4 treatment 3 replication The results showed that the giving of various types of feed gave significant effect (P <0,05) to EPP and RGR but not significant (P> 0,05) to PER and survival rate. The feed that can increase EPP and RGR is the silk worm and snail. The feed of silk worm and snail can produce EPP of 7.33% and 5.75% while RGR value is 2.24% / day and 1.73% / day. The feed that can increase PER is a silk worm capable of generating PER of 0.23%. Water quality in maintenance media is in the appropriate range for the growth of rice eel (M. albus). Based on the results of research can be concluded that the feed that can increase eel growth is by giving the silk worm.
POTENCY OF EEL Anguilla marmorata in NORTH LOMBOK REGENCY, WEST NUSA TENGGARA PROVINCE Setyono, Bagus Dwi Hari; Junaidi, Muhammad; Marzuki, Muhammad; Paryono, Paryono; Azhar, Fariq
AQUASAINS Vol 6, No 2 (2018)
Publisher : Jurusan Perikanan dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2397.646 KB) | DOI: 10.23960/aqs.v6i2.p589-596

Abstract

Anguilla spp. is one of the fishery commodities that have high economic value.North Lombok regency is one of the central part of Indonesia which is suspected to have potential as an eel migration route. This study aims to obtain information about the identification of Anguilla spp fish populations. in North Lombok Regency. The results showed that the waters area of North Lombok Regency has the potential of eel fish source Anguilla marmorata. The timing of eel migration is still unknown, so further research is needed which will cover a full year.
PENGELOMPOKKAN HABITAT DASAR PERAIRAN DANGKAL BERBASIS DATA SATELIT QUICKBIRD MENGGUNAKAN ALGORITMA SELF ORGANISING MAP Asmadin, Asmadin; Siregar, Vincentius P; Wijanarto, Antonius Bambang
AQUASAINS Vol 1, No 1 (2012)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Pengembangan algoritma self organising map dalam penelitian ini bertujuan untuk mengelompokkan habitat perairan dangkal berbasis data satelit Quickbird. Data primer dikumpulkan melalui data penginderaan jauh dan survey lapang, sedangkan data sekunder dikumpulkan dari penelitian yang relevan. Hasil penelitian menunjukkan bahwa klasifikasi algoritma self organising map dapat mengklaster/ mengklasifikasi citra Quickbird dari berbagai kombinasi kanal. Dari berbagai kombinasi input data setelah direduksi kolom air dengan algoritma Lyzenga, Self organising map menunjukkan hasil klaster yang relatif baik. Algoritma Lyzenga dapat mengelompokkan habitat perairan dangkal 6 (enam) kelas habitat, yaitu karang mati (merah), karang hidup (hijau), lamun (orange), pasir (kuning), dan habitat campuran (hijau muda), daratan (hitam) dan perairan (biru). Setelah menggunakan self organising map secara visual terlihat 6 kelas habitat yang berbeda dari Lyzenga, yaitu karang mati (kuning), karang hidup (cyan), lamun (ungu), pasir (kuning), dan habitat campuran (biru), daratan (hijau) dan perairan (coklat). Algoritma self organising map dapat mengurangi kesalahan tematik habitat perairan dangkal dan sangat membantu proses ekstraksi ROI (region of interset) untuk reklasifikasi lebih lanjut dengan teknik klasifikasi supervised.

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