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20 Articles
Decades of overfishing of cod stocks in the Baltic has led to a change in the genetic material of the fish. They reproduce with an ever smaller size - a survival advantage.
Not only do cod occur less frequently in the Baltic Sea than in the past, they are also significantly smaller: their genetic material has changed due to decades of overfishing. Now the cod continue to reproduce with an ever smaller size - this is a survival advantage, but "ecologically highly dramatic".
Overfishing reduces the number of cod in the Baltic Sea. This influences the physical development of the animals known as cod. Researchers speak of a "man-induced evolution".
Overfishing Has Caused Cod To Halve in Body Size Since 1990s, Study Finds
Overfishing has led to a collapse in the eastern Baltic cod population, but over the past three decades the size of the fish themselves has also been dramatically and mysteriously shrinking. From a report: Now scientists have uncovered genomic evidence that intensive fishing has driven rapid evoluti...
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