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Journal : Current Trends in Aquatic Science

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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Abstract

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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Abstract

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).
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (454.535 KB) | DOI: 10.24843/CTAS.2018.v01.i01.p01

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.
Identifikasi Bakteri Patogen Pada Ikan Nila (Oreochromis niloticus) di Danau Batur, Bali Ni Putu Wiwin Angreni; I Wayan Arthana; 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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (813.466 KB) | DOI: 10.24843/CTAS.2018.v01.i01.p13

Abstract

This research aims to determine types of pathogen bacteria presented in body parts (liver and kidneys) of Tilapia (Oreochromis nilotics), types of bacteria attacks wild Tilapia and fish in Floating Culture Net (FCN) of Batur Lake as well as its prevalence bacteria found in Tilapia on Batur lake. Method used in this research is descriptive method, with a sampling method based on purposive sampling technique. According to identification’s result obtained, types of bacteria that infect liver were including to Aeromonas hydrophila, Plesiomonas shigelloides and Citrobacter freundii bacteria. Meanwhile, bacteria that infect kidneys are Aeromonas hydrophila, Aeromonas caviae, Plesiomonas shigelloides and Citrobacter freundii. Bacteria that infect wild fish are Aeromonas hydrophila, Aeromonas caviae and Plesiomonas shigelloides , while fishes in FCN are infected by Aeromonas hydrophila, Aeromonas caviae, Plesiomonas shigelloides and Citrobacter freundii bacteria. Infection prevalence of pathogen bacteria in Tilapia in Batur Lake is Aeromonas hydrophila at 55,5%, Plesiomonas shigelloides for 27,7%, Aeromonas caviae and Citrobacter freundii at 11,1%. According to sampling location, prevalence of bacteria that attacks wild fish are Aeromonas hydrophila and Plesiomonas shigelloides at 44,4%, Aeromonas caviae for 11,1%. Prevalence of bacteria that attacks fish in FCN is Aeromonas hydrophila for 66,6%, Citrobacter freundii infection at 22,2%, Aeromonas caviae and Citrobacter freundii at 11,1%.
Endoparasit Pada Ikan Kakap Merah (Lutjanus sp.) di Pantai Kelan, Bali; Potensi Bersifat Zoonosis Sri Hartini; I Made Damriyasa; Endang Wulandari Suryaningtyas
Current Trends in Aquatic Science Vol 2 No 2 (2019)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

One of the factors that reduce fish production and population is disease. This study aims to determine the various types of zoonotic endoparasites, prevalence, intensity, abundance, diversity index, relationship of fish length-weight, relationship length with the intensity of parasites, and the relationship between weight and intensity of parasites. This research was conducted at Kelan Beach, Bali from December 2018 to April 2019. The research used a descriptive method using purposive sampling for data retrieval. Endoparasites were found in 9 types, namely Cucullanus sp. (3 ind), Anisakis sp. (7 ind), Lecithochirium sp. (1 ind), Hamacreadium lethrini (6 ind), Helicometra sp. (1 ind), Siphoderina sp (7 ind). Trypanorhyncha (32 ind), Tetraphylidea (4 ind), and Acanthocephalus sp. (1 ind). Organs infected by endoparasites were stomach (34%), liver (3%), and intestine (63%). The highest prevalence obtained was Trypanorhyncha (37.5%). The highest intensity obtained was Hamacreadium lethrini and Cucullanus sp. about 3 ind / fish. The highest abundance obtained was Trypanorhyncha (80%). The diversity index was 1,583. The length and weight relationship of Red Snapper (Lutjanus sp.) shows isometric relationship after t-test. Long relationship with parasite intensity has a very low relationship with a velue (r) of 0,142. The relationship between weight and parasite intensity has a very low relationship with a velue (r) of 0,139. Based on 9 types of endoparasites found 1 type is zoonotic namely Anisakis sp. that cause Anisakiasis disease.
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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Abstract

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.
Kelimpahan Bakteri Coliform di Perairan Laut Celukanbawang, Provinsi Bali Firda Nurdiana; 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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Abstract

Pencemaran pada perairan laut merupakan salah satu permasalahan lingkungan yang disebabkan oleh berbagai macam kegiatan yang menghasilkan limbah. Pencemaran dalam suatu perairan mempunyai hubungan dengan jenis dan jumlah mikroorganisme dalam perairan tersebut. Salah satu kelompok mikroorganisme yang sering digunakan sebagai indikator pencemaran perairan adalah bakteri kelompok Coliform. Penelitian ini bertujuan untuk mengetahui kondisi perairan tersebut dengan mengukur kelimpahan bakteri Coliform di perairan laut Celukanbawang. Penelitian dilakukan pada bulan November 2018 dengan mengambil data dari 3 stasiun penelitian. Pengambilan sampel dilakukan saat musim kemarau dengan 3 kali pengulangan di setiap stasiun. Metode yang digunakan saat pengambilan sampel, yaitu purposive sampling. Parameter kualitas air yang diukur dalam penelitian ini meliputi suhu, pH, salinitas, DO, dan nitrat. Data yang diperoleh kemudian dibandingkan dengan Peraturan Gubernur Bali Nomor 16 Tahun 2016 mengenai Kriteria Baku Mutu Air Laut Untuk Biota Laut dan Baku Mutu Air Laut Untuk Pariwisata dan Rekreasi (Mandi, Renang, dan Selam). Uji kelimpahan Coliform dilakukan dengan metode MPN (Most Probably Number). Hasil penelitian menunjukkan bahwa kelimpahan bakteri Coliform di stasiun 1 berkisar antara 3 MPN/100 ml-93 MPN/100 ml, stasiun 2 berkisar antara 7 MPN/100 ml-93 MPN/100 ml, dan stasiun 3 tidak ditemukan bakteri kelompok Coliform sama sekali. Hasil uji E. coli menunjukkan hasil 0 MPN/100 ml di semua stasiun penelitian. Hal ini mengindikasikan bahwa perairan laut Celukanbawang masih dalam keadaan baik sesuai dengan Pergub No. 16 tahun 2016 tersebut.
Perbandingan Struktur Komunitas Ophiuroidea pada Zona Intertidal di Perairan Pantai Segara Samuh dan Pantai Melasti, Badung, Bali Debi Bunga Novitasari; I Wayan Arthana; 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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Abstract

Penelitian ini dilaksanakan pada perairan Pantai Segara Samuh dan Pantai Melasti, Badung, Bali pada bulan Januari hingga Maret 2018. Tujuan dari penelitian ini untuk mengetahui perbandingan struktur komunitas Ophiuroidea dan mengetahui kondisi fisika kimia perairan pada kedua pantai tersebut. Metode yang digunakan adalah metode deskriptif kuantitatif. Di Pantai Segara Samuh ditemukan 5 spesies, sedangkan di Pantai Melasti ditemukan 6 spesies. Ophiocoma schoenlenii merupakan spesies yang hanya ditemukan pada Pantai Melasti. Berdasarkan hasil perhitungan, Kelimpahan total pada Pantai Segara Samuh sebesar 109,9 ind/m2 sedangkan Pantai Melasti sebesar 124,133 ind/m2. Nilai indeks keanekaragaman pada Pantai Segara Samuh sebesar 1,604 sedangkan Pantai Melasti sebesar 1,687. Berdasarkan kriteria indeks keanekaragaman Shannon-wiener, keanekaragaman Ophiiuroidea kedua pantai tersebut tergolong keanekaragaman sedang. Nilai indeks keseragaman pada Pantai Segara Samuh sebesar 0,997 sedangkan Pantai Melasti sebesar 0,941. Berdasarkan nilai tersebut, Pantai Segara Samuh dan Pantai Melasti tergolong dalam keseragaman tinggi yang mengacu pada Odum (1971). Nilai indeks dominansi pada Pantai Segara Samuh sebesar 0,202 sedangkan pada Pantai Melasti sebesar 0,194. Berdasarkan kriteria nilai indeks dominansi Simpson (1949), kedua pantai tersebut memiliki nilai dominansi tergolong rendah. Hasil pengukuran kualitas air di perairan Pantai Segara Samuh berkisar 7,7 (pH); 5,5-56 mg/L (DO); 30-30,8 ppt (salinitas); dan 29,6-30oC (suhu). Sementara untuk perairan pantai Melasti berkisar 7,5-7,7 (pH); 5,6-5,7 mg/L (DO); 29,3-30 ppt (salinitas); dan 29,6-30,5oC (suhu). Perairan pada kedua pantai tersebut tergolong optimal bagi pertumbuhan Ophiuroidea. Substrat pada kedua pantai dimana Ophiuroidea ditemukan berupa pasir berkarang, pasir, karang dan pecahan karang.
Uji Tantang Bakteri Vibrio harveyi Pada Pasca Larva Udang Vaname (Litopenaeus vannamei) Ni Putu Tika Lestari; 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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (641.113 KB) | DOI: 10.24843/CTAS.2018.v01.i01.p15

Abstract

This research aims to determine the survival of Litopenaeus vannamei post larvae when challenged with various density of pathogenic Vibrio harveyi. The L. vannamei post larvae used in this study was obtained from Vannamei Broodstock Center BPIUUK, Karangasem Bali. This research was conducted for two months, from April to May 2018 in fishery laboratory, Faculty of Marine Science and Fisheries, Udayana University by using complete randomized experimental design with four different V. harveyi density and three times repetitions. The study showed that the higher density of pathogenic V. harveyi resulted on the lower survival of L. vannamei post larvae. The highest density of V. harveyi 107 CFU/mL in treatment D resulted on 53±5.77% post larvae survival, while treatment A as control without addition of V. harveyi was still has survival of 100±0.00% at the end of experiment. The density 105 CFU/mL of V. harveyi (Treatment B) seems able to be tolerated by L. vannamei post larvae since the shrimp was still have high survival at this V. harveyi density. Further both V. harveyi density of 106 CFU/mL and 107 CFU/mL were not able to tolerated by the shrimp post larvae and lead to the high shrimp mortality. Although affected on shrimp survival, addition of V. harveyi have no significant effect to the weight of shrimp post larvae between treatments.
Identifikasi dan Intensitas Rocinela sp. Pada Ikan Kerapu di Pantai Kedonganan, Jimbaran, Bali Ni Luh Ayu Trisnayanti; I Made Damriyasa; Endang Wulandari Suryaningtyas
Current Trends in Aquatic Science Vol 2 No 2 (2019)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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This research was aims to determine the intensity level of Rocinela sp. in groupers. Grouper fish samples were taken at Kedonganan Beach, Jimbaran, Bali. Grouper fish is a type of fish that lives around coral reefs, that have a high economic value. Grouper fish sampling was done randomly method, so that the length and weight of the grouper samples used will be more diverse. Fish samples obtained at Kedonganan Beach will be excamine for parasites at the Fisheries Laboratory, Marine and Fisheries Faculty, Udayana University. The grouper samples observed in this study were 40 individuals. The type of parasite found in grouper is Rocinela sp. This parasite belongs to the order of Isopoda which is a type of ectoparasite that attacks fish. Ectoparasites are a type of parasite that infects the outside of a fish's body, such as the gills, mouth, eyes, and operculum. Ectoparasites can cause damage and impaired function in the infected organ. Based on the results of the study found Rocinel sp. in 26 fish sampled with a total number of parasites of 28 individuals. Most of these parasites were found in the gills with a percentage of 92.6% and some were found in the operculum with a percentage of 7.4%. The intensity value of parasitic Rocinela sp. that is 1,067, this value indicates infection of Rocinela sp. which is low in grouper fish at Kedonganan Beach, Jimbaran, Bali.