Author: Annabelle Aliga Herrera
Publisher:
ISBN: 9789718722008
Category : Tilapia
Languages : en
Pages : 86

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Book Description

Author:
Publisher:
ISBN: 9789746389396
Category : Derris triloliata
Languages : en
Pages : 330

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Book Description
Acute toxicity and sub-acute effects of Derris trifoliata leaves extract on histological and ultratructural alteration of Nile tilapia Oreochromis niloticus liver were studied. The experiments were performed under laboratory conditions with static renewal test-type. The fish were investigated for growth (indicated by length and weight), relative liver weight index, histological and ultrastructural alteration of liver during 5 months. The median lethal concentration (96-h LC50) for acute toxicity was 1.99 mg/L. Base on this value, a sub-acute concentration for this study was calculated to 0.02 mg/L. From light microscopic study, the histological changes of hepatic tissue comprised of swelling, vacuolation and fat droplets accumulation in hepatocytes, hemorrhagic inflammation, macrophage invasion, fibrosis, foci and diffused necrosis. Histochemical studies indicated that the treated liver were less in glycogen storagen storage but much more lipid accumulation than control groups. The ultrastructural alterations of hepatocyte consisted of mitochondrial contraction and/or swelling, proliferation and fragmentation of RER, shifting of RER to SER, increasing of secondary lysosome. Hepatic cell injuries and liver tissue lesions were increased along the continuous exposure of 5 months experimental period. Hence, these cellular changes were time dependent effect. Additionally, a significant (p≤0.5) reduction in growth was observed in 3rd month tilled 5th month of treated groups. The relative liver weight index was also significant (p≤0.5) increased in the 4th month of experiment.

Author: Abdel-Fattah M. El-Sayed
Publisher: Academic Press
ISBN: 0128165413
Category : Technology & Engineering
Languages : en
Pages : 360

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Book Description
Tilapia Culture, Second Edition, covers the vital issues of farmed tilapia in the world, including their biology, environmental requirements, semi-intensive culture, intensive culture systems, nutrition and feeding, reproduction, seed production and larval rearing, stress and disease, harvesting, economics, trade, marketing, the role of tilapia culture in rural development and poverty eradication, and technological innovations in, and the environmental impacts of, tilapia culture. In addition, the book highlights and presents the experiences of leading countries in tilapia culture, thus making it ideal for tilapia farmers and researchers who seek the most relevant research and information. The new second edition not only brings the most updated information within each chapter, but also delivers new content on tilapia transfers, introductions and their impacts, the use of probiotics and other additives in tilapia culture, tilapia trade, including marketing, and sustainability approaches and practices, such as management practices, ecosystem approaches to tilapia culture, and value chain analyses of tilapia farming. - Presents the biology of tilapia, including taxonomy, body shapes, geographical distribution, introductions and transfers, gut morphology, and feeding habits - Covers semi-intensive tilapia culture in earthen ponds, tanks, raceways, cages, recirculating systems, and aquaponics - Provides the latest information on brood stock management, production of monosex tilapia, seed production, and larval rearing under different culture systems - Highlights the most common infectious and non-infectious diseases affecting farmed tilapia, with a full description of disease symptoms and treatment measures - Provides an in-depth exploration of tilapia economics, trade and marketing

Author: Zdeňka Svobodová
Publisher: Food & Agriculture Org.
ISBN: 9789251034378
Category : Technology & Engineering
Languages : en
Pages : 80

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Book Description

Author: Carol M. Morrison
Publisher:
ISBN: 9781888807158
Category : Nile tilapia
Languages : en
Pages : 96

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Book Description

Author: Doaa M. Mokhtar
Publisher: CRC Press
ISBN: 1351795023
Category : Nature
Languages : en
Pages : 193

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Book Description
This new volume provides up-to-date information that emphasizes the relationships and concepts by which cell and tissue structures of fish are inextricably linked with their function. The book also describes the most recent development in the sciences of fish histology. Covers the normal histology of six fish species, the book provides detailed information on the histology of all organs of teleosts and includes 130 original photomicrographs, tables, updated terminology, and expanded information, with over 100 in color. This new volume, Fish Histology: From Cells to Organs, provides up-to-date information that emphasizes the relationships and concepts by which cell and tissue structures of fish are inextricably linked with their function. The book also describes the most recent development in the sciences of fish histology. Histology is the discipline of biology that involves the microscopic examination of tissue sections in order to study their structure and correlate it with function. Histology can detect signs of disease not easily recognized on gross examination and can therefore be of interest in fish health supervision. With fish constituting nearly 60% of all vertebrate species and of major worldwide economic importance as a food source, the information presented here will be valuable. The volume begins with concise introduction into the histological techniques for fish sampling, followed by an accurate up-to-date description of fish tissues. A chapter is devoted to each organ and organ systems in fish body as well. In addition, the book includes particular diagrams to illustrate the structure of organs and to enhance the usefulness of the text. This volume is designed for use by veterinary medical scientists, researchers, biologists, ichthyologists, fish farmers, veterinarians working in fisheries and, of course, by comparative histologists who want to learn more about the fish world. As a further aid to learning and identification, numerous photomicrographs and electron micrographs accompany the text, with particular emphasis on diagrams and tables to summarize morphologic and functional features of cells, tissues, and organs.

Author: David E. Brune
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 616

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Book Description

Author: Gatei wa Nganda
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The study investigated the morphology and mucus histochemistry of the intestines of Nile tilapia (Oreochromis niloticus), the biofilm on the microvillar surface of the intestines, and interaction of these biofilms with a microbe prevalent in tilapia habitats, Aeromonas hydrophila. The Nile tilapia intestines were processed for routine histology and electron microscopy. The use of antimucus antibodies in the fixative preserved the biofilm for light and electron microscopic evaluation. The relationship between time, location, numbers of A. hydrophila, and the biofilm was then investigated using an immunofluorescent test.

Author: A. R. Mollah
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author: Rocco C. Cipriano
Publisher:
ISBN:
Category : Aeromonas hydrophila
Languages : en
Pages : 28

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Book Description