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Aquaculture: Riboflavin

Deficiency

Salmonids: Anorexia, poor growth, corneal vascularization, cloudy lens (Illus. 1), snout erosion, spinal deformities, increased mortality rate, severe fin erosion, fin hemorrhage, rapid opercular movement, apparent muscular weakness, light or dark pigmentation, striated constrictions of abdominal wall, photophobia, incoordination, lethargy, anemia, reduced hepatic D-amino acid oxidase activity (McLaren et al. 1947; Phillips and Brockway, 1957; Halver, 1957; Kitamura et al., 1967a; Poston et al. 1977; Takeuchi et al., 1980; Hughes et al., 1981b; Woodward, 1982, 1983, 1984, 1985; Hughes, 1985; Teskeredi et al., 1989; Amezaga and Knox, 1990; Palmer, 1996).

Illustration 1

Ayu (Plecoglossus altivelis): Anorexia, poor growth, high mortality, hemorrhagic eyes; erosion, hemorrhage and ulceration of the skin of the fin behind and upper part of lateral side (Kanazawa, 1991).

Red sea bream (Pagrus major): Poor growth (Yone, 1975).

Eel (Anguilla japonica): Fin hemorrhage, photophobia, poor growth, anorexia, lethargy (Arai et al., 1972).

Walking catfish (Clarias batrachus): Anorexia, poor growth, hemorrhage of skin and fins, increased mortality rate, eroded barbels, edema, fading of body color, lethargy, pale gills and liver, cloudy lens (Butthep et al., 1985).

Barramundi (Lates calcarifer): Sluggishness; photophobia; cataracts; stunted body; reduced growth, feed efficiency and survival; dark coloration; anorexia; erratic swimming (Boonyaratpalin and Wanakowat, 1993).

Yellowtail (Seriola quinqueradiata): Dark coloration, congestion in fins and eyes, cloudy lens (Shimeno, 1991).

Gilthead sea bream (Sparus auratus L.): Anorexia, poor growth, dark coloration, protruded eyes, anemia (Morris et al., 1995).

Common carp (Cyprinus carpio): Anorexia, poor growth, high mortality rate, hemorrhage of skin and fins, nervousness, photophobia (Aoe et al., 1967b; Ogino, 1967).

Channel catfish (Ictalurus punctatus): Short-body dwarfism, anorexia, poor growth, cataract; reduced hepatic D-amino acid oxidase activity (Dupree, 1966; Murai and Andrews, 1978b; Serrini et al., 1996).

Tilapia (Oreochromis mossambicus x O. urolepis hornorum): Anorexia, reduced growth, light coloration, nervous symptoms, mortality, dwarfism, cataract (Lim et al., 1993); O. aureus: lethargy, fin erosion (Soliman and Wilson, 1992b).

Shrimp (Penaeus japonicus): Reduced larval growth and survival (Kanazawa, 1985).

Shrimp (P. monodon): Light coloration, irritability, protuberant cuticle at intersomites, short-body dwarfism (Chen and Hwang, 1992).

Tiger puffer (Takifugu rubripes): Anorexia, reduced growth (Kato et al., 1994).

Japanese parrot fish (Oplegnthus faciatus): anorexia and reduced growth (Ikeda et al., 1988).

Japanese flounder (Paralichthys olivaceus): Although not a clear indication of a deficiency, albinic flounder had one-tenth the riboflavin in the skin of normally pigmented flounder (Nakamura and Iida, 1986).

 

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