and you thought fish were fun!
well many conservationists and scientists do not, when isolated
water bodies sometimes almost spontaneously are populated by fish, that had no natural route to the ponds or lakes, so how did that happen? image credit ArtTower/ Pixabay, apparently it is all down to ducks! fish eggs that get into a duck’s mouth and into
its stomach get pummeled by the duck’s gizzard and then burned up by the
stomach acids, and by the time that they exit the duck’s body, you would
suspect that these eggs can no longer hatch, you would not expect that some
will survive unscathed, but some surprisingly do! a few eggs can exit unscathed
in a duck’s excrement, possibly helping to spread those fish, including invasive
species, to different places, a new study finds, it’s been an “open question
for centuries how these isolated water bodies can be populated by fish,” says
fish biologist Patricia Burkhardt-Holm of the University of Basel in
Switzerland, who was not involved with the work, this study shows one way that
water birds may disperse fish, she says, how amazing, so often the discovery of
an invasive specie is blamed on aquarist dumping unwanted fish into lakes and
ponds, now it appears it is the ducks! for more details about this have a
look over at ScienceNews.
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