Changes in the Epidermal Ultrastructure of Atlantic Herring (Clupea harengus) Yolk-sac Larvae Exposed to Copper
The effects of copper on the yolk-sac larvae of Clupea harengus (Clupeidae) hatched from eggs previously exposed to copper were examined in terms of epidermal ultrastructure. The dermal cells of the larvae hatched in 0.03 or 0.05 mgl-1 copper showed the following changes; extensive vacuolat...
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| Format: | Article |
| Language: | English |
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Asian Fisheries Society
2000-06-01
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| Series: | Asian Fisheries Science |
| Online Access: | https://www.asianfisheriessociety.org/publication/downloadfile.php?id=429&file=Y0dSbUx6QTJNVGs1TlRjd01ERXpOVFU0TWpNM016UXVjR1Jt |
| Summary: | The effects of copper on the yolk-sac larvae of Clupea harengus (Clupeidae) hatched from eggs previously exposed to copper were examined in terms of epidermal ultrastructure. The dermal cells of the larvae hatched in 0.03 or 0.05 mgl-1 copper showed the following changes; extensive vacuolation, degeneration of mitochondria and golgi complexes, dilation of endoplasmic reticulum and perinuclear spaces, disruption of the nuclear membrane, disappearance of felt-like fibrous plate and increase in the size and number of microvilli. The chloride cells in copper-exposed larvae had fewer and smaller mitochondria. These ultrastructural changes probably affect respiration and osmoregulation, thus the survival of herring larvae exposed to copper. |
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| ISSN: | 0116-6514 2073-3720 |