Sentences with phrase «wrasse populations»

A population crash is unlikely to be imminent, says Halvorsen, but this is the first time we've realised that natural wrasse populations seem to be shrinking.

Not exact matches

In the meantime, Halvorsen hopes that the new rules, involving stricter size limits for which wrasse can be caught, will be accepted, leaving more fertile fish in the sea to replenish wild populations.

Wrasse consume many molluscs and crustaceans, and play a key role controlling populations of sea urchins that can deplete seafloor kelp forests — vital sanctuaries for many marine species including young cod.

One way to save the wild populations would be to develop hatcheries where wrasse are bred specially for salmon farmers.