A dose-dependent relationship between copper burden in female urchin gonads and developmental impairment of their offspring

作者：Phillips Nicole E^*; Rouchon Agnes M

来源：Marine Environmental Research, 2018, 136: 120-125.

DOI：10.1016/j.marenvres.2018.01.020

• Copper
• Evechinus chloroticus
• New Zealand
• Urchins
• Metals
• Coastal waters
• Developmental abnormality
• Maternal effects

We examined transgenerational effects of exposure to copper on early development of offspring in the urchin Evechinus chioroticus, and whether parental exposure mediated offspring response to a further low level exposure to copper during early development. Month-long exposure to elevated copper (25 mu gL(-1)) in the laboratory increased copper in gonads of both males and females and reduced gonad size by almost half. There was a negative relationship between adult size and copper burden. Normal larval development and larval size four days after fertilization were both strongly, negatively related to the amount of copper in female gonads in a dose-dependent manner, but fertilization success was unaffected. This demonstrates a transgenerational effect of maternal exposure to copper pollution on offspring performance that is mediated by individual traits of females, but no evidence of strong paternal effects, nor of a low level of copper in the water in which early development occurs.

• 出版日期2018-5