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Fishing planet california natural eggs12/15/2023 According to Audubon, prior research has shown that mallards provide such a service to plant seeds, and the researchers wanted to see if fish eggs might also pass through the ducks unscathed. The current study, published in the journal the Proceedings of the National Academy of Sciences, examined the potential role of ducks in dispersing fish eggs. The idea was intuitive enough to stick around, but when researchers searched for the data to back up the claim, as they did in a 2018 review paper, the literature was found wanting.īut a 2019 study found that the intrepid eggs of the killifish, which can enter a kind of hibernation to survive dry spells buried in sand and soil, were able to survive a trip through both ends of a swan. How isolated waters become populated by fish has been an open question for centuries, Patricia Burkhardt-Holm, a fish biologist at the University of Basel, tells Carolyn Wilke of Science News.Īs long ago as the 1800’s naturalists proposed that birds might have a hand (or a beak, foot or feather, as the case may be) in carrying fish eggs to far flung locales, reported Richa Malhorta in 2019 for Hakai. In experiments, some fish eggs hatched after being pooped out by ducks, suggesting that feathered flight could facilitate seemingly immaculate piscine invasions, reports Priyanka Runwal for Audubon. This somewhat mystical sounding theory might not be far off: a new study suggests fish eggs may simply fall from the sky. In lakes and pools that appear physically cut off from other bodies of water, fish sometimes seem to materialize out of nowhere.
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