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Prevalensi dan Intensitas Parasit pada Ikan Layur (Trichiurus lepturus) di Pasar Ikan Kedonganan, Bali Hasbia Rahmat; Pande Gde Sasmita Julyantoro; Endang Wulandari Suryaningtyas
Current Trends in Aquatic Science Vol 3 No 1 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aims to determine the prevalence and intensity of parasitic infections in layur fish (T. lepturus) sold in Kedonganan Fish Market. Layur fish (T. lepturus) were studied as many as 40 birds and identified in the Fisheries Science Laboratory, Faculty of Marine and Fisheries, Udayana University. Parasites observed were ectoparasites and endoparasites. The results of the research data were analyzed by calculating the difference in prevalence, intensity of infection, and correlation test to determine the relationship between length and intensity, weight with intensity, and descriptive calculation to determine the level of infection in various organs. The results showed that the prevalence of parasitic infections in layur fish (T. lepturus) marketed in the Kedonganan Fish Market was included in the ‘always’ category with a value of 95%. According to William and Bunkley (1996), this ‘always’ category illustrates that ordinary parasites infect fish by 90-98%. The intensity of parasitic infections was 815 parasitic individuals with an average intensity of 21.44 parasites / fish. After a correlation test, the relationship between the length and weight of the fish with the intensity of parasitic infection was positively correlated but with a weak relationship with values ??of 0.029 and 0.146, where each fish increased in length and weight, it did not necessarily increase the intensity of parasitic infections.
Intensitas dan Prevalensi Endoparasit pada Ikan Layang (Decapterus russeli) yang didaratkan di Pantai Kedonganan Bali Amayliana Ajeng Nastiti; Pande Gde Sasmita Julyantoro; Dewa Ayu Angga Pebriani; Endang Wulandari Suryaningtyas
Current Trends in Aquatic Science Vol 4 No 2 (2021)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The Indian scad (Decapterus russeli) is a pelagic fish that has high economic value, found throughout the Indonesian waters. The availability of Indian scad resources makes this fish easy to find, especially in Kedonganan Beach, Bali. The use of Indian scad for human consumption makes it necessary to pay attention to the quality of indian scad in order to avoid fish diseases, such as parasites. The attack of endoparasites in Indian scad can be zoonotic, which can be dangerous for humans who consume them, so research is needed to determine the density of endoparasite attacks and the percentage of endoparasites in indian scad. Samples of Indian scad (D. russeli) were obtained randomly from PPI Kedonganan and Kedonganan Fish Market. The observed organs were intestines, gonads and liver. The research was conducted for 1 month from 16 December 2020 to 17 January 2021 and fish samples were taken by random sampling. There were 35 fish samples (D. russeli) examined. The endoparasites found were Anisakis sp. (316 individuals), Camallanus sp. (15 individuals), and Lecithocirium sp. (33 individuals). The highest intensity in the genus Anisakis was 9.2 ind/fish and was classified as moderate infection and the highest prevalence was also in the Anisakis genus, which was 97.14% with (almost always categories), 60% of the genus Lecithocirium (very frequent categories), and the Camallanus genus of 28.50% with (frequent category).
Kuantitas dan Kualitas Larva Ikan Nila (Oreochromis niloticus) Hasil Pemijahan Induk dengan Sex Ratio Berbeda Ade Angelia Atmanegara Sinaga; Pande Gde Sasmita Julyantoro; Ni Made Ernawati
Current Trends in Aquatic Science Vol 3 No 2 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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The prospect of developing freshwater fish farming development in Indonesia has been promising. One of the freshwater fish commodities that has a high economic value and market demand is tilapia (Oreochromis niloticus). This research aims to determine the optimal sex ratio for tilapia broodstock to produce the best quantity and quality of tilapia larvae. The research was conducted in December 2019 to February 2020 at Unit Pelaksana Teknis (UPT) Pasar Benih Ikan dan Balai Benih Ikan Denpasar. The method use is an experimental with complete random design with 3 treatments and 3 replicates. The sex ratio for this research was a ratio between males and females of 1:2, 1:3, 1:4. Observed parameters were fish larvae quantity, absolute weight and length tilapian larvae, survival rate tilapia larvae and water quality. The results of this research showed that sex ratio of tilapia has a significant effect (P < 0,05) on the quantity of tilapia larvae, with the highest quantity was obtained from the treatment B (sex ratio of 1:3) about 1305±393 individu, but the quality of the tilapia larvae e.g. absolute weight, length and survival rate were not significantly influenced by sex ratio of tilapia broodstock (P > 0,05). Water quality parameter including temperature, dissolved oxygen (DO) and potential of hydrogen (pH) were still at a range that supports tilapia life during the research period. Keywords: Tilapia; Larvae; Mating; Sex Ratio
Total Bakteri dan Kelimpahan Vibrio pada Budidaya Udang Vannamei (Litopenaeus vannamei) Sistem Resirkulasi Tertutup dengan Padat Tebar Berbeda Bagus Anjasmara; Pande Gde Sasmita Julyantoro; Endang Wulandari Suryaningtyas
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Microbial management is one of the succesful keys on shrimp farming with high density and environtmental friendly culture system. This study was aimed at inversigation on abudance of total bacteria and Vibrio in vannamei shrimp culture using closed recircultion system with different stocking densities. This study used an experimental method with complete randomized design factorial and was performed with closed recirculation system equipped by bio-filters, protein skimmer, and using artificial feed with addition of probiotic. 9 ponds were used for this experiment including 3 control ponds (K) with 200 ind/m2 stocking density, 3 ponds I (P1) and 3 ponds II (P2) with 500 ind/m2 and 750 ind/m2 stocking density, respectively. Those 3 pond with similar stocking density represented as three times of repetition. After 60 days culture period, the average total bacteria and abundance of Vibrio collected from culture water of K, P1, and P2 ponds were 1,2 x 104, 1,6 x 105, and 2,1 x 104 CFU/mL and 1,2 x 103, 2,8 x 103, and 3,7 x 102 CFU/mL. Moreover, at he end of experiment, the average total bacteria and abundance of Vibrio collected from Shrimph body of K, P1, and P2 ponds were 2,7 x 106, 1,6 x 106, and 4,9 x 104 CFU/mL and 2,0 x 103, 1,4 x 103, and 8,5 x 102 CFU/mL. The statistical test of ANOVA was not significant (p> 0,05) between ponds.
Profil Histologi Hepatopankreas Udang Vanamei (Litopenaeus vanamei) Dikultur dengan Padat Tebar Berbeda M Reza Mei Budi Dharmawan; Pande Gde Sasmita Julyantoro; Alfi Hermawati Waskita Sari
Current Trends in Aquatic Science Vol 3 No 1 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Teknologi akuakultur resirkulasi adalah sebuah sistem sirkulasi air dengan menggunakan kembali air untuk budidaya, sehingga mengurangi penggunaan air dari luar sistem. Menggunakan teknologi akuakultur resirkulasi ini, biota budidaya akan lebih sehat dan kadar sirkulasi makanan lebih rendah dari perikanan secara konvensional. Tujuan penelitian ini untuk mengetahui gambaran kondisi hepatopankreas udang hasil teknologi budidaya Recirculating Aquaculture System (RAS) dengan padat tebar yang berbeda. Penelitian ini menggunakan metode eksperimental dengan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 3 kali ulangan, yaitu RAS padat tebar 500 ekor/m2, RAS padat tebar 750 ekor/m2, dan kontrol berupa budidaya sistem intensif flow through (konvensional) padat tebar 200 ekor/m2. Prosedur pembuatan sampel histologi hepatopankreas udang vanamei dilakukan berdasarkan prosedur Austin dan Austin (1989). Hasil penelitian menunjukkan perubahan struktur hepatopankreas pada udang uji berupa nekrosis, vakuolasi, dan indikasi mineralisasi. Pada teknologi budidaya RAS padat tebar 500 ekor/m2 kondisi hepatopankreas mengalami peningkatan kualitas pada bulan ke-2, karena nekrosis, vakuolasi, dan mineralisasi pada tubulus mengalami penurunan, sehingga lebih banyak tubulus utuh yang berada pada kondisi normal. Sedangkan pada teknologi budidaya RAS padat tebar 750 ekor/m2 dan kontrol kondisi hepatopankreas mengalami penurunan kualitas pada bulan ke-2. Tetapi pada teknologi budidaya RAS padat tebar 750 ekor/m2 lebih baik daripada kontrol, karena pada kontrol tidak ditemukan tubuli normal yang mengindikasikan hepatopankreas mengalami kerusakan. Kualitas air budidaya pada tambak udang uji masih dikategorikan normal dan memenuhi baku mutu untuk pemeliharaan udang vanamei.
Pengaruh Penambahan Air Cucian Beras terhadap Laju Pertumbuhan Spirulina sp. Annisa Nur Safitri Utomo; Pande Gde Sasmita Julyantoro; Ayu Putu Wiweka Krisna Dewi
Current Trends in Aquatic Science Vol 3 No 1 (2020)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Culture media is one of the important factors for microalgae growth. Adding fertilizer to culture media can influence the density of Spirulina sp. The use of rice water can be used as an alternative fertilizer for culture media because it is good for the growth of Spirulina sp. Rice water contains nutrients including nitrogen, phosphorus and vitamin B1. This study aims to determine the effect and determine the concentration of rice water media on the growth rate of Spirulina sp. culture. The experiment was conducted in December 2018 to January 2019 at Greath Hall of Brackishwater Aquaculture Fisheries (BBPBAP) Jepara, Central Java. The experiment used a completely randomized design (CRD) with five treatments and three replications. The test material in the study was Spirulina sp. with an initial density of 5×103 cells/ml and the fertilizer used is rice water and walne. The main parameters observed were Spirulina sp. cell density. while the supporting parameters observed were measurements of temperature, pH, DO, salinity, nitrate and phosphate. The dosage of adding rice washing water is treatment A1 (1 mL/L), A2 (3 mL/L), A3 (5 mL/L), K- (0 mL/L) and K + using walne fertilizer with an optimum dose of 0.5 mL/L. The results showed that the addition of rice water had a positive effect on the growth rate of Spirulina sp. The addition of rice water produces the optimum growth rate in treatment A1 which is equal to 0.57±0.001 cells/day. The ANOVA test results showed that the addition of rice water had a significant effect (P <0.05) on the growth rate of Spirulina sp.
Identifikasi dan Predileksi Ektoparasit Kepiting Bakau (Scylla spp.) dari Ekosistem Mangrove Taman Hutan Raya (TAHURA) Ngurah Rai, Bali Ilham Muttaqin; Pande Gde Sasmita Julyantoro; Alfi Hermawati Waskita Sari
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (715.947 KB) | DOI: 10.24843/CTAS.2018.v01.i01.p04

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This research aims to know the various types, predilections, prevalence and intensity of ectoparasites on mud crab (Scylla spp.) and water quality condition in Taman Hutan Raya (TAHURA) Ngurah Rai, Bali. This research was conducted in TAHURA mangrove ecosystem which has 219 hectare of research area near to Pemogan village from February to April 2018. The research used descriptive method by using random sampling for collecting data. Mud crabs obtained in this research consisted of 21 individual mud crabs that belong to 3 species, namely Scylla olivacea (11 ind), Scylla serrata (9 ind), and Scylla tranquebarica (1 ind). The observations results found 5 types of ectoparasites namely Zoothamnium sp. (2021 ind), Epistylis sp. (955 ind), Carchesium sp. (7 ind), Vorticella sp. (98 ind), and Octolasmis sp. (201 ind). Organs infected by ectoparasitic are legs (517 ind), swimming legs (476 ind), carapace (740 ind), claws (1348 ind), and gills (201 ind). The highest prevalence rate obtained was Zoothamnium sp. and Epistylis sp. about 95,23% while the lowest prevalence rate was Carchesium sp. about 4,76%. The highest level of intensity was Zoothamnium sp. about 101,05 ind/crab, while the lowest intensity obtained on Carchesium sp. with 7 ind/crab. The condition of water quality was still considered optimal for mud crab (Scylla spp.) life with average temperature of 29,9 ºC, dissolved oxygen 6,6 mg/L, salinity 20‰, and pH 7,39.
Prevalensi dan Intensitas Ektoparasit Ika Nila (Oreochromis niloticus) di Bendungan Telaga Tunjung, Tabanan Ida Ayu Grisandi Dewi Kurnia; Pande Gde Sasmita Julyantoro; Endang Wulandari Suryaningtyas
Current Trends in Aquatic Science Vol 2 No 1 (2019)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This study aims to determine the value of the prevalence and intensity of ectoparasites in Tilapia (Oreochromis niloticus) in Telaga Tunjung Dam and measure the parameters of water quality, temperature, pH, and DO. The number of tilapia studied was 30, sampling was done at 3 stations in Telaga Tunjung Dam. Identification of ectoparasites was carried out at the Fisheries Science Laboratory, Water Resources Management Study Program, Faculty of Marine and Fisheries, Udayana University. Ectoparasites were identified in the mucus, dorsal, caudal, operculum and gill organs of the tilapia by skin scraping and wet mount methods. Data were analyzed by descriptive quantitative which calculated differences in the prevalence and intensity of ectoprasite infections and correlation tests to determine the relationship of length and weight of fish with intensity. The results of the three stations show the prevalence value with the "Usually" criteria, which is still in the level of "Medium" infection. At stations I and III the prevalence value is 70% and at station II is 80%. The intensity value obtained at station I is 6.7 (tail / ind) the level of infection is "Medium", whereas in stations II and III the infection rates are "Low" which are 3.5 and 4.0 (tail / ind). After a correlation test, it was found that the relationship between the length and weight of tilapia with ectoparasite intensity was positively correlated with values ??of 0.1876 and 0.0878. The results of temperature water quality parameters in the three stations ranged from 26.8 -28.2 ?, for the results of pH values ??in the three stations ranged from 7.3 to 8.2 and the results of DO parameter values ??ranged from 4.3 to 5.5 mg / l, where the results of measurements of temperature, pH and DO water quality parameters in the Telaga Tunjung Dam are still in the optimal category.
Distribusi Dan Kelimpahan Bulu Babi (Echinoidea) Di Perairan Pulau Pasir Putih, Desa Sumberkima, Buleleng, Bali Ni Putu Emie Noviana; Pande Gde Sasmita Julyantoro; Dewa Ayu Angga Pebriani
Current Trends in Aquatic Science Vol 2 No 1 (2019)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

This research was conducted in the waters of Pasir Putih Island, Sumberkima Village, Gerokgak District, Buleleng Regency, Bali Province. This research was conducted from February to April 2018. This study aims to determine the distribution patterns and abundance of sea urchins, as well as water quality conditions in the waters of Pulau Pasir Putih. The method used was the method of observation and descriptive method. In this study, there were 5 species of sea urchins from 4 families, Echinothrix calamaris and Diadema setosum from Diadematidae family, Tripneustes gratilla from Toxopneustidae family, Brissus latecarinatus from Brissidae family and Echinometra mathaei from Echinometridae family. Echinothrix calamaris has uniform distribution pattern with Id <1, Diadema setosum has clustered distribution pattern with Id> 1, Tripneustes gratilla has clustered distribution pattern with Id> 1, Brissus latecarinatus has clustered distribution pattern with Id> 1, Echinometra mathaei has clustered distribution pattern with Id> 1. Echinothrix calamaris abundance is 2,42 ind/m2 with relative abundance is 21%, Diadema setosum abundance is 6 ind/m2 with relative abundance is 53%, Tripneustes gratilla abundance is 2,33 ind/m2 with relative abundance is 3%, Brissus latecarinatus abundance is 0,17 ind/m2 with relative abundance is 2%, and Echinometra mathaei abundance is 2,42 ind/m2 with relative abundance is 21%. The value of community structure of sea urchins in the water of Pasir Putih Island indicates that medium diversity, unstable uniformity and low dominance. The condition of water quality in Pulau Pasir Putih was still within the threshold for the life of sea urchins. Based on the research, Diadema setosum species has the highest abundance with clustered pattern distribution.
Struktur Komunitas Moluska di Perairan Pantai Grand Bali Beach Sanur, Bali I Bagus Andreana Surya Nugraha; Pande Gde Sasmita Julyantoro; Suprabadevi Ayumayasari Saraswati
Current Trends in Aquatic Science Vol 1 No 1 (2018)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (962.536 KB) | DOI: 10.24843/CTAS.2018.v01.i01.p09

Abstract

The purpose of this research was to investigate the community structure of mollusks, water quality and substrate type at Grand Bali Beach, Sanur. The research location was divided into 4 stations. This research was held in January until February 2018. The data was obtained from transect 1x1 m. The research was analysis by descriptive quantitative method. The research found about 33 species. The total abudance from station 1, 2, 3 and 4 were 5,75 ind/m2, 6 ind/m2, 6 ind/m2 and 9 ind/m2 respectively. The value of diversity was 2-2,52, indicated a moderate diversity while the evenness was 0,8-0,9, that indicated the high evenness and the dominance was low about 0,11-0,19. The community structure of mollusk at the Grand Bali Beach Sanur was still in normal condition for mollusk that supported by good water quality and favorable substrate type.
Co-Authors A.H.W. Sari A.P.W.K. Dewi A.P.W.K. Dewi Abrar Ravidhia Ade Angelia Atmanegara Sinaga Agus Wahyudi Alfarisi Prafanda Alfi Hermawati Waskita Alfi Hermawati Waskita Sari Alfi Hermawati Waskita Sari Alfi Hermawati Waskitasari Amayliana Ajeng Nastiti Ana Indriyanti Annas Cesar Mayasha Annisa Millenia Putri Annisa Nur Safitri Utomo Arief Prayoga Akbar Aristiani Rusdi Oktaviyanti Artanti Tri Lestari Ayu Putu Wiweka Krisna Dewi Ayu Putu Wiweka Krisna Dewi Bachori Dhian Pratama Bagus Anjasmara Bedjo Slamet Bona Rizky Simanungkalit Budhi Wahyu Nurindra Claudy Margaretha Kandouw D.A.A. Pebriani Dewa Ayu Angga Pebriani Dewa Ayu Angga Pebriani Dewa Ayu Angga Pebriani Dian Kharisma Ginting Doni Samuel Barus Endang Wulandari Endang Wulandari Suryaningtyas Endang Wulandari Suryaningtyas Errina Bening Ambartyasning Fiko Triajiatma Firda Nurdiana G.R.A. Kartika G.R.A. Kartika Galang Alamin Trisnabatin Gde Raka Angga Kartika Grace Adelina Girsang Handayani Sitorus Hasbia Rahmat Hasrat Damai Hulu I Bagus Andreana Surya Nugraha I Gede Yoga Vikannada Giri I Gusti Ayu Agung Purnama Sari I Gusti Ayu Febiana Putri Wardeni I Gusti Ngurah Permana I Kadek Alamsta Suarjuniarta I Kadek Mega Mega Dhyana Putra I Ketut Wija Negara I Ketut Wija Negara I Komang Yopi Trio Santana I Made Angga Wahyu Dinata I Made Budiarsana I Made Hendy Wesha Suryawan I Wayan Arthana I Wayan Kasa I Wayan Restu I.K.W. Negara I.W. Arthana I.W. Restu Ida Ayu Grisandi Dewi Kurnia Ida Bagus Gede Darmayasa Ilham Muttaqin Jefri Boy Pratama Kadek Bayu Candra Gotama Kartika, I Wayan Darya Luh Gede Manik Radzena Martha M Reza Mei Budi Dharmawan Made Ayu Pratiwi Maria Ulfa Maulana Ilham Pratama N.M. Ernawati N.M. Ernawati N.P.P. Wijayanti Ni Desak Putu Ida Suryani Ni Kadek Vindi Wedhawati Ni Luh Komang Ayu Maitri Jayanthi Ni Luh Putu Ayu Puspita Dewi Ni Made Ernawati, Ni Made Ni Made Putri Handayani Ni Putu Emie Noviana Ni Putu Putri Wijayanti Ni Putu Putri Wijayanti Ni Putu Sandhitya Candra Kartina Ni Putu Tika Lestari Ni Putu Widiantari Peter Bossier Putu Bagaskara Putu Dewi Purnama Sari Putu Eka Sudaryatma Putu Eka Sudaryatma Putu Niken Ayu Saraswati Rai Ayu Ratri Chandra Pandunita Rani Ekawaty Ratriana Hartini Saleh S.A. Saraswati Shanti Paramita Jayanti Siti Nurlatifah Sukarman Sukarman Suprabadevi Ayumayasari Saraswati Suprabadevi Ayumayasari Saraswati Syifa Maria DiazGonzales Tom Defoirdt Wahyu Ilvita Vindia Wahyu Nurlita Widiastuti Widiastuti Widya Purnama Dewi Yan Ramona Yova Tresya Galingging Yufinta Cahya Permanti Yuni Debora Prasicilia Sitorus