Effects of atrazine on sex steroid dynamics, plasma vitellogenin concentration and gonad development in adult goldfish (Carassius auratus)

Endrin incorporated into the diet of mature male goldfish for 3–4 months affected growth, gonad development, thyroid activity, serum characteristics, total and differential body fat, behavior, and mortality. A biphasic response to endrin dosage was characteristic. The low doses (4.3–43 μg/kg body weight per day) either caused no detectable effect or were stimulatory, as seen from increased rates of growth and higher total body fat contents. The two highest doses (143 and 430 μg) caused mortality, lowered growth rates, and other chronic symptoms of endrin intoxication; they also caused decreased thyroid cell heights, decreased gametogenesis, and lowered total body fat, as well as less vacuolization in liver cells.All doses except the highest caused elevated serum Na concentrations. The fish receiving the highest dose suffered osmoregulatory failure. Induced spermiation was not affected; fish receiving 143 or 430 μg/kg had greatly reduced, but functional testes.

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Effects of diets containing genistein and diadzein in a long-term study on sex steroid dynamics of goldfish (Carassius auratus)

Toxicology and Industrial Health ◽

10.1177/0748233712452604 ◽

2012 ◽

Vol 30 (2) ◽

pp. 132-140 ◽

Cited By ~ 3

Author(s):

Tahere Bagheri ◽

Mohammad Reza Imanpoor ◽

Valiollah Jafari

Keyword(s):

Carassius Auratus ◽

Sex Steroid ◽

Term Study ◽

Goldfish Carassius Auratus ◽

Long Term Study

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Effects of the parasitic isopod Ichthyoxenus japonensis Richardson, 1913 (Isopoda, Cymothoidae) on the growth and gonad development of the goldfish Carassius auratus Linnaeus, 1758

Journal of Crustacean Biology ◽

10.1093/jcbiol/rux026 ◽

2017 ◽

Vol 37 (3) ◽

pp. 356-358 ◽

Cited By ~ 1

Author(s):

Cong J. Hua ◽

Dong Zhang ◽

Hong Zou ◽

Shan G. Wu ◽

Gui T. Wang ◽

...

Keyword(s):

Carassius Auratus ◽

Gonad Development ◽

Goldfish Carassius Auratus ◽

Parasitic Isopod

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SEM of Hepatocytes and Biliary Passages in Goldfish Liver

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100080213 ◽

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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