scholarly journals Parasites prevalence which infecting freshwater fishes in Mulur Reservoir of Sukoharjo District, Indonesia

2021 ◽  
Vol 10 (2) ◽  
Author(s):  
AHMAD HUSEIN IRIANSYAH ◽  
Agung Budihardjo ◽  
SUGIYARTO SUGIYARTO
Keyword(s):  
Water Quality ◽  
Oreochromis Niloticus ◽  
Freshwater Fishes ◽  
Wild Fish ◽  
Clarias Batrachus ◽  
Reservoir Area ◽  
Purposive Sampling ◽  
Susceptibility To Infection ◽  
Fish Habitats

Abstract. Iriansyah AH, Budiharjo A, Sugiyarto. 2020. Parasites prevalence infecting freshwater fishes in Mulur Reservoir of Sukoharjo District, Indonesia. Bonorowo Wetlands 10: 66-71. Mulur Reservoir is one of the natural fish habitats and consumption fish cultivation in Sukoharjo District, Indonesia. Excessive use of the reservoir area causes the decreasing of water quality which affects fish life sustainability, one of them can cause the fish susceptibility to infection by parasites. The purpose of this research was to identify the types of parasites which infect on consumption of fish in Mulur Reservoir and calculate the prevalence value. Samples were taken by purposive sampling for gourami (Osphronemus gouramy), tilapia (Oreochromis niloticus), betutu fish (Oxyeleotris marmorata), catfish (Clarias batrachus), and jambal (Pangasius djambal) 10 fishes for each type. The parts of fish infected by ectoparasites such as body mucus, fin mucus, head mucus, and gills were taken by scrapping and observed under a microscope with magnification between 100-400x. The results showed that 5 types of ectoparasites were Epistylis sp., Ichthyophthirius multifilis, Trichodina sp., Dactylogyrus sp., and Gyrodactylus sp. with an average prevalence of more than 50%. There are more ectoparasites in domesticated fish than in wild fish.

scholarly journals Eksplorasi Jenis-Jenis Ikan di Perairan Danau Lindu Provinsi Sulawesi Tengah

2018 ◽  
Vol 1 (2) ◽  
pp. 30
Author(s):  
Nurfadilah Rahma ◽  
Manap Trianto
Keyword(s):  
Dissolve Oxygen ◽  
Cyprinus Carpio ◽  
Oreochromis Niloticus ◽  
Oreochromis Mossambicus ◽  
Clarias Batrachus ◽  
Fishing Gear ◽  
Anabas Testudineus ◽  
Purposive Sampling ◽  
Channa Striata ◽  
Central Sulawesi

Abstract: Fish are defined as vertebrates that live in water with characteristics of gills that function to take dissolve oxygen from water and fins used for swimming. This research aims to determine the species of fish that exist in Lindu Lake, Central Sulawesi Province. The method used is purposive sampling by using fishing gear net, fishing line and seser. Base on the result of this research was found 10 species of fish consisting of  9 Ordo and 6 Family, namely Oreochromis mossabicus, Oreochromis niloticus, Cyprinus caprio, Anabas testudineus, Osphroneus gourami, Anguilla marmorate, Aplocheilus panchax, Clarias batrachus, Channa striata and Puntius gonionatus. Abstrak: Ikan merupakan hewan bertulang belakang yang hidup di air dengan karakteristik memiliki insang yang berfungsi untuk mengambil oksigen terlarut dari air dan sirip yang digunakan untuk berenang. Penelitian ini bertujuan untuk mengetahui jenis ikan yang terdapat di Perairan Danau Lindu Provinsi Sulawesi Tengah. Metode yang digunakan adalah purposive sampling dengan menggunakan alat tangkap, pancing, dan seser. Berdasarkan hasil penelitian ditemukan 10 jenis ikan yang terdiri dari 9 ordo dan 6 family. Spesies ikan yang di peroeleh yaitu Oreochromis mossambicus, Oreochromis niloticus, Cyprinus carpio, Anabas testudineus, Osphronemus gourami, Anguilla marmorat, Aplocheilus panchax, Clarias batrachus, Channa striata dan        Puntius gonionatus.

scholarly journals Probiotics for cultured freshwater fish

2020 ◽  
Vol 41 (2) ◽  
pp. 105
Author(s):  
Javier Fernando Melo-Bolívar ◽  
Ruth Yolanda Ruiz-Pardo ◽  
Michael E Hume ◽  
Hanna E Sidjabat ◽  
Luisa Marcela Villamil-Diaz
Keyword(s):  
Water Quality ◽  
Gastrointestinal Tract ◽  
Stress Tolerance ◽  
Freshwater Fish ◽  
Filamentous Fungi ◽  
Growth Promotion ◽  
Freshwater Fishes ◽  
Fish Feed ◽  
Probiotic Strains ◽  
Commercial Applications

Probiotic products are viewed as an alternative to the use of antibiotics in freshwater fishes farming. Probiotic organisms include bacteria, yeast, and filamentous fungi offering different benefits to fish including growth promotion, inhibition of pathogen colonisation, and improvement of nutrient digestion, water quality, and stress tolerance, as well as enhancement of reproduction. For these reasons, this review aims to identify the main trends in probiotic amendment in freshwater fishes. Strategies to incorporate the probiotic strains in the fish feed or pellets to allow optimal viability of the strains as they reach the fish gastrointestinal tract (GIT) are crucial in probiotic research and commercial applications for freshwater fish.

scholarly journals 18S rRNA Analysis Reveals High Diversity of Phytoplankton with Emphasis on a Naked Dinoflagellate Gymnodinium sp. at the Han River (Korea)

Diversity ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 73
Author(s):  
Buhari Lawan Muhammad ◽  
Taehee Kim ◽  
Jang-Seu Ki
Keyword(s):  
Water Quality ◽  
Quality Management ◽  
18S Rrna ◽  
Water Quality Management ◽  
Operational Taxonomic Unit ◽  
Amplicon Sequencing ◽  
Freshwater Ecosystems ◽  
Reservoir Area ◽  
Han River ◽  
Phytoplankton Communities

Biomonitoring of phytoplankton communities in freshwater ecosystems is imperative for efficient water quality management. In the present study, we present the seasonal diversity of phytoplankton from the non-reservoir area of the Han River (Korea), assessed using the 18S rRNA amplicon sequencing. Our results uncovered a considerably high eukaryotic diversity, which was predominantly represented by phytoplankton in all the seasons (38–63%). Of these, the diatoms, Cyclostephanos tholiformis, Stephanodiscus hantzschii, and Stephanodiscus sp., were frequently detected in spring and winter. Interestingly, for the first time in the Han River, we detected a large number of operational taxonomic unit (OTU) reads belonging to the naked dinoflagellate Gymnodinium sp., which dominated in autumn (15.8%) and was observed only in that season. Molecular cloning and quantitative real-time polymerase chain reaction (PCR) confirmed the presence of Gymnodinium sp. in the samples collected in 2012 and 2019. Moreover, a comparison of the present data with our previous data from a reservoir area (Paldang Dam) revealed similar patterns of phytoplankton communities. This molecular approach revealed a prospective toxic species that was not detected through microscopy. Collectively, resolving phytoplankton communities at a level relevant for water quality management will provide a valuable reference for future studies on phytoplankton for environmental monitoring.

Population characteristics of Oreochromis niloticus (Linnaeus, 1758) in light of varying water quality conditions of adjoined Lakes Naivasha and Oloidien in Kenya

2020 ◽  
Vol 01 (01) ◽  
pp. 54-71
Author(s):  
Alice Mutie ◽  
◽  
Edna Waithaka ◽  
George Morara ◽  
Priscilla Boera ◽  
...  
Keyword(s):  
Water Quality ◽  
Oreochromis Niloticus ◽  
Quality Parameters ◽  
Population Characteristics ◽  
Lake Naivasha ◽  
Habitat Conditions ◽  
Relationship Analysis ◽  
Relative Condition Factor ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Main Lake

Nile tilapia Oreochromis niloticus (L.) is a recent re-introduction in Lake Naivasha and is one of the fish species that has crossed into Lake Oloidien. This study assessed and compared the population characteristic of O. niloticus under different physicochemical conditions of water in L. Naivasha (main) and L. Oloidien. Samples of water for selected water quality parameters and fisheries data from catch survey were collected between 2017 and 2018. Results indicate the highest conductivity levels recorded in 2018 as 2916 ±11.30 µScm-1 and 282.33 ± 4.33 µScm-1 for L. Oloidien and L. Naivasha respectively. Mean total lengths of O. niloticus were 19.1± 1.8 cm and 23.6 ± 2.9 cm for L. Oloidien and L. Naivasha respectively. Mean weight of O. niloticus was 129.3 ± 37.8 g in L. Oloidien and 260.9 ± 81.0 g in L. Naivasha. Length-weight relationship analysis showed a negative allometric growth (b = 2.526) and (b = 2.983; p > 0.05) in lakes Oloidien and Naivasha respectively. The relative condition factor (Kn) values were slightly lower in O. niloticus from L. Oloidien compared to the main Lake. Differences between the two lakes in the population characteristics of O. niloticus may be attributed to the observed differences in the habitat conditions, including the conductivity and pH levels.

scholarly journals ANALISIS KARAKTER REPRODUKSI DAN PERFORMA BENIH HIBRID IKAN NILA PANDU F6 DENGAN IKAN NILA NILASA (Oreochromis niloticus) Analysis of the Character Reproduction and Seed Hybrid Performance 0f Tilapia Fish F6 Pandu with Nilasa Tilapia (Oreochromis niloticus)

2017 ◽  
Vol 12 (1) ◽  
pp. 19
Author(s):  
Dio Patria Yustysi ◽  
Fajar Basuki ◽  
Titik Susilowati ◽  
Tristiana Yuniarti
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Oreochromis Niloticus ◽  
Egg Size ◽  
Specific Growth ◽  
Fish Farming ◽  
Hatching Rate ◽  
Feed Conversion

ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh dari hibridisasi ikan nila Pandu F6 dengan nila Nilasa terhadap karakter reproduksinya dan performa benih yang dihasilkan. Penelitian ini dilakukan dengan metode eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 kali ulangan. Perlakuan dalam penelitian ini: perlakuan A (Pandu F6 ♀><Pandu F6 ♂), B (Nilasa ♀><Nilasa ♂), C (Pandu F6 ♀>< Nilasa ♂), dan D (Nilasa ♀><Pandu F6 ♂). Data yang diamati meliputi fekunditas, daya tetas telur, diameter dan bobot telur, panjang dan bobot larva TL, panjang dan bobot larva lepas kuning telur, kelulushidupan, laju pertumbuhan spesifik, konversi pakan dan kualitas air. Hasil penelitian menunjukan nilai terbaik pada fekunditas sebesar 1191,67 ± 239,45 butir/200 g, daya tetas telur sebesar 80,93 ± 3,90%, kelulushidupan sebesar 81,55 ± 7,54%, laju pertumbuhan spesifik sebesar 7,26 ± 0,25, konversi pakan 0,54 ± 0,02 didapatkan pada perlakuan C, akan tetapi untuk diameter dan bobot telur, panjang dan bobot larva Kuning Telur, dan panjang dan bobot larva lepas kuning telur tidak berbeda nyata. Hasil tersebut menunjukan bahwa hibridisasi (perlakuan C) memberikan pengaruh yang nyata (P < 0,05) terhadap fekunditas, daya tetas telur, kelulushidupan, laju pertumbuhan spesifik, dan konversi pakan tetapi tidak berpengaruh terhadap diameter dan bobot telur, panjang dan bobot larva, dan panjang dan bobot larva lepas kuning telur. Kata kunci: Hibridisasi, Ikan Nila, Karakter Reproduksi, Performa Benih  ABSTRACT This research aims to know the influence of hybridization tilapia fish Pandu F6 with nila Nilasa against the character of the reproduction and seed performance. This research was conducted with the experimental method using Random Design complete (RAL) with 4 treatments and three replicates. The treatments in this study: the treatment A (Pandu F6 F6 ♀ >< Pandu ♂), B (Nilasa ♀>< Nilasa ♂), C (Pandu F6 ♀>< Nilasa ♂), and D (Nilasa ♀ >< Pandu F6 ♂). The observed data covering fecundity, hatching rate, egg size, yolk sack larva length and weight, length and weight of the egg yolk off larvae, survival rate, specific growth rate, feed conversion rate, and water quality. The results showed the best value on the fecundity of 1191.67±239.45 eggs/200 g, Hatching rate 80.93 ± 3.90%, Survival rate of 81.55 ± 7.54%, specific growth rate of 7.26 ± 0.25, conversion fodder 0.54 ± 0.02 obtained at the treatment C, but for the diameter and weight of egg, larval length and weight TL, and the length and weight of the yolk egg off larvae for each treatment do not differ markedly. The results showed that hybridization (treatment C) gives a real influence (P < 0.05) of fecundity,hatching rate, survival rate but not with the egg size, larva weight and length, and the length and weight of larvae off yolk. Water quality on the spawning, hatching eggs and larvae found on the maintenance of a decent range for tilapia fish farming Keywords: hybridization, tilapia fish, character of the reproduction, seed performance 

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