PARASITES OF FRESHWATER FISH: I. INTERNAL TREMATODES OF COMMERCIAL FISH IN THE CENTRAL ST. LAWRENCE WATERSHED

1939 ◽  
Vol 17d (7) ◽  
pp. 154-168 ◽  
Author(s):  
L. L. Lyster
Keyword(s):  
Freshwater Fish ◽  
Perca Flavescens ◽  
Commercial Fish

Sixteen species of trematodes from ten species of fish are discussed. Ptychogonimus fontanus sp. nov. from Perca flavescens is described.

PARASITES OF FRESHWATER FISH: II. PARASITISM OF SPECKLED AND LAKE TROUT AND THE FISH FOUND ASSOCIATED WITH THEM IN LAKE COMMANDANT, QUE.

1940 ◽  
Vol 18d (2) ◽  
pp. 66-78 ◽  
Author(s):  
L. L. Lyster
Keyword(s):  
Freshwater Fish ◽  
Lake Trout ◽  
Salvelinus Fontinalis ◽  
Perca Flavescens ◽  
Game Fish

Parasitism of two game fish, Salvelinus fontinalis and Cristivomer naymaycush and of two other fish, Perca flavescens and Catostomus commersonii is discussed. Glaridacris intermedius sp. nov. (Cestoda), Rhabdochona laurentiana sp. nov. (Nematoda) and Raphidascaris alius sp. nov. (Nematoda) are described.

scholarly journals PELATIHAN PEMIJAHAN IKAN HIAS AIR TAWAR NEON TETRA PADA PELAKU USAHA BUDIDAYA IKAN DI KECAMATAN KRAS, KABUPATEN KEDIRI, JAWA TIMUR

2017 ◽  
Vol 1 (1) ◽  
pp. 11
Author(s):  
Kustiawan Tri Pursetyo ◽  
Abdul Manan
Keyword(s):  
Freshwater Fish ◽  
Community Service ◽  
Fish Farming ◽  
Ornamental Fish ◽  
Commercial Fish ◽  
Fish Breeding ◽  
Target Program ◽  
Market Outlook ◽  
Breeding Techniques

Neon tetra (Paracheirodon innesi) as one of the commercial fish species of tetra group. Market prospects, especially for national, pretty good. The market outlook is also supported by the scarcity of ornamental fish farmers who cultivate them. One contributing factor, the lack of knowledge about the ratio of the number of parent couples who used because the sex ratio in spawning fish of each species is different. This is related to the determination of the effectiveness of the number of pairs of parent and efficient use of aircraft. One livelihood District of Kras is a fish farming businesses. With the current conditions in which the business prospects of ornamental fish are on the rise, the skills of ornamental fish breeding techniques Neon tetra is an advantage for fish farming businesses. The target outcomes of this community service program is Equipping fish farming businesses in the District Kras with knowledge of engineering and maintenance management of seed breeding freshwater fish neon tetra and increase their income by making freshwater fish neon tetra as commodity diversification ornamental fish.AbstrakNeon tetra (Paracheirodon innesi) sebagai salah satu jenis ikan komersial kelompok tetra. Prospek pasar terutama untuk nasional, lumayan bagus. Salah satu mata pencaharian Kabupaten Kras adalah usaha bertani ikan. Dengan kondisi terkini dimana prospek usaha ikan hias semakin meningkat, keterampilan teknik pemuliaan ikan hias Neon tetra merupakan keuntungan bagi usaha budidaya ikan. Metode yang digunakan menggunakan penyuluhan diskusi, pelatihan, monitoring, dan konsultasi. Hasil target program layanan masyarakat ini adalah Melengkapi usaha budidaya ikan di Kabupaten Kras dengan pengetahuan teknik dan manajemen pemeliharaan bibit ikan air tawar neon tetra dan meningkatkan pendapatan mereka dengan membuat ikan air tawar neon tetra sebagai komoditas diversifikasi ikan hias. Kemampuan memijahkan ikan terutama ikan hias sangat diminati oleh para petani di Kecamatan Kras, Kediri. Hal itu karena para petani sangat menginginkan untuk bisa membudidayakan ikan hias neon tetra tersebut. Para petani dapat mencoba memulai memijahkan sendiri ikan hias Neon Tetra dengan sampel ikan yang dierikan serta dapat berkonsultasi mengenai budidaya ikan hias Neon Tetra sewaktu- waktu di Laboratorium Perikanan FPK Unair.

The protozoan parasites of fish from two lakes in Algonquin Park, Ontario

1985 ◽  
Vol 63 (8) ◽  
pp. 1846-1858 ◽  
Author(s):  
Lianxiang Li ◽  
Sherwin S. Desser
Keyword(s):  
New Species ◽  
Freshwater Fish ◽  
Salvelinus Fontinalis ◽  
Perca Flavescens ◽  
Global Distribution ◽  
Lepomis Gibbosus ◽  
Relative Distribution ◽  
Protozoan Parasites ◽  
Parasitic Protozoa ◽  
Semotilus Atromaculatus

The parasitic Protozoa of seven species of freshwater fish (the cyprinids Notropis cornutus, Notropis heterolepis, Notemigonus crysoleucas, and Semotilus atromaculatus; the percid Perca flavescens; the centrarchid Lepomis gibbosus; and the salmonid Salvelinus fontinalis) are described from Lake Sasajewun and Lake Opeongo, Algonquin Park, Ontario. The parasites include 1 species of Hexamita, 6 species of Goussia, 2 species of Eimeria, 3 species of Octosporella, 30 species of Myxosporea, and 9 species of Ciliata. Fifteen new species are described: Goussia notropicum, Goussia notemigonica, Sphaerospora diminuta, Myxobolus heterolepis, Myxobolus lepomicus, Myxobolus paralintoni, Myxobolus gibbosus, Myxobolus wellerae, Myxobolus schuberti, Myxobolus pseudokoi, Myxobolus pellicdes, Thelohanellus oviformis, Myxobilatus semotilii, Trichodina opeongoensis, and Apiosoma triangularis. The relative distribution of the parasites and their prevalence in fish from the two lakes, and the global distribution of protozoan parasites of fish are discussed.

CHARACTERIZATION OF COLLAGEN EXTRACT FROM THE SKINS OF COMMERCIAL FRESHWATER FISH

2015 ◽  
Vol 77 (33) ◽  
Author(s):  
Anida Aminudin ◽  
Shamsul Muhammad ◽  
Ruhil Hayati Hamdan ◽  
Rumaizi Shaari ◽  
Mariam Firdhaus Mad Nordin ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Freshwater Fish ◽  
Functional Property ◽  
Oreochromis Niloticus ◽  
Clarias Gariepinus ◽  
Cosmetic Products ◽  
Commercial Fish ◽  
Molecular Weights ◽  
Sds Page

Collagen was documented as a difficult and expensive protein to quantify due to its insoluble. It is particularly since solubility is a key functional property in a variety of applications such as healthcare and cosmetic products. The main aim of this study was to extract the collagens from the skins of commercial freshwater fish such as red tilapia (Oreochromis niloticus), catfish (Clarias gariepinus) and pangasius (Pangasius pangasius) together with characteristics defined for each type of collagen extraction. The extracted collagens were determined in their molecular weights by using SDS-PAGE and the structure of it was observed under SEM. The obtained molecular weight of all three commercial fish collagens is approximately >80kDa. The characteristics of each type of collagen were then defined by using appropriate analysis through this research.

QUALITY CONTROL OF COMMERCIAL FISH GROWN IN POND OF FISH FARM «BISEROVSKIY»

2020 ◽  
Vol 1 (2) ◽  
pp. 183-190
Author(s):  
A.D. Kudryavtseva ◽  
◽  
Yu.M. Subbotina ◽  
Keyword(s):  
Listeria Monocytogenes ◽  
Freshwater Fish ◽  
Marine Invertebrates ◽  
Fish Farming ◽  
Food Products ◽  
Commercial Fish ◽  
Microbiological Investigation ◽  
Mirror Carp ◽  
Organoleptic Characteristics

The objects of this research were the mirror carp and trout growth in fishfactory «Biserovskiy ». The purpose of this research was veterinary and sanitary estimation of these fish. We conducted a pathoanatomic autopsy and inspection of fish, determined organoleptic characteristics and conducted microbiological investigation on the presence of coliforms (E. coli), Listeria monocytogenes, S. aureus in the fish. Veterinary-sanitary examination was conducted in accordance with the reference book «Veterinary and sanitary examination of freshwater fish» and «The rules of veterinary and sanitary examination of freshwater fish and crawfish». Microbiological investigation was conducted in accordance with «Instruction of sanitary and microbiological control of alimentary products from fish and marine invertebrates», GOST 26670-91 «Food products. Methods for cultivation of microorganisms», GOST 10444.15-94 «Food products. Methods for determination of quantity of mesophilic aerobes and facultative anaerobes», GOST 31747-2012 «Food products. Methods for detection and quantity determination of coliformes », GOST 32031-2012 «Food products. Methods for detection of Listeria monocytogenes », GOST 31746-2012 «Food products. Methods for detection and quantity determination of coagulase-positive staphylococci and Staphylococcus aureus». According to the results of the research, these fish met the requirements of regulatory documentation, which confirms the safety of products for the consumer. Keywords: fish farming, mirrorcarp, trout, pathological investigation, organoleptic investigation, microbiological investigation, veterinary and sanitary examination.

SEM of Hepatocytes and Biliary Passages in Goldfish Liver

1977 ◽  
Vol 35 ◽  
pp. 556-557
Author(s):  
Waykin Nopanitaya ◽  
Joe W. Grisham ◽  
Johnny L. Carson
Keyword(s):  
Carassius Auratus ◽  
Cell Layer ◽  
Three Dimensional ◽  
Cell Types ◽  
Biliary System ◽  
Fish Food ◽  
Commercial Fish ◽  
Goldfish Carassius Auratus ◽  
Commercial Fish Food

An interesting feature of the goldfish liver is the morphology of the hepatic plate, which is always formed by a two-cell layer of hepatocytes. Hepatic plates of the goldfish liver contain an infrequently seen second type of cell, in the centers of plates between two hepatocytes. A TEH study by Yamamoto (1) demonstrated ultrastructural differences between hepatocytes and centrally located cells in hepatic plates; the latter were classified as ductule cells of the biliary system. None of the previous studies clearly showed a three-dimensional organization of the two cell types described. In the present investigation we utilize SEM to elucidate the arrangement of hepatocytes and bile ductular cells in intralobular plates of goldfish liver.Livers from young goldfish (Carassius auratus), about 6-10 cm, fed commercial fish food were used for this study. Hepatic samples were fixed in 4% buffered paraformaldehyde, cut into pieces, fractured, osmicated, CPD, mounted Au-Pd coated, and viewed by SEM at 17-20 kV. Our observations were confined to the ultrastructure of biliary passages within intralobular plates, ductule cells, and hepatocytes.

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