4 ms·
One finding that comes to mind is the fact that of the flies that do land on the zebra pelt, nearly all (75%) land on the black stripes. This suggests that some
by idlewords 4y ago
One finding that comes to mind is the fact that of the flies that do land on the zebra pelt, nearly all (75%) land on the black stripes. This suggests that something more is happening than just identifying the zebra as an unappealing target.
You also have experiments like this, where painting Japanese cows in zebra stripes was an effective fly deterrent, even though the flies there have no evolutionary history with zebras. (It's worth clicking just for the photo of the test cow.)
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0223447 https://journals.plos.org/plosone/article?id=10.1371/journal...
- gcanyon 4y agoNice, thanks. The original article's claim that "Though the effect of stripes on flies is well-established, the source of the effect remains unexplained." is over-broad and incorrectly pessimistic.
- jakzurr 4y agoThanks for the link; that was indeed worth a click.
- gcanyon 4y agoBut I'll add that: 1. It's possible that Japanese flies are repelled for different reasons than African flies. 2. It's possible that flies are repelled both because the stripes interfere with the flies' vision in some way, and because the (African) flies prefer other animals.