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Details van artikel 17 van 18 gevonden artikelen
| Titel: |
The stereoscan observations of the skin of catfish, saccobranchus fossilis, following chromium exposure |
| Auteur: |
Khangarot, B. S. Tripathi, D. M. |
| Verschenen in: |
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering |
| Paginering: | Jaargang 27 (1992) nr. 4 pagina's 1141-1148 |
| Jaar: |
1992-05 |
| Inhoud: |
The surface morphology of the skin of air-breathing catfish, Saccobranchus fossilis (Bloch) was examined with a scanning electron microscope (SEM) in both fish exposed for seven days to 5.6 mg/L chromium in water and unexposed fish. In the control fish, the epidermis have several hexa or polygonal mucous goblet cells (MGC) which are uniform in shape and size, and microvilli-like structures are present in the mucous cells. An SEM study of the Cr-exposed epidermis revealed an increased number of active mucous cells having a dilated flask or cylindrical shape; they had lost their hexa or polygonal shape. Chromium exposure also caused focal necrosis and hypersecretion in these cells. The accumulation of excess mucus suggests a molecular interaction between mucus glycoprotcin and toxic chromium ions. Such changes may result in osmoregulation failure and a loss of resistance by the skin surface to a wide variety of fish pathogens. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 17 van 18 gevonden artikelen
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