Dung beetles are
essential groundskeepers in many ecosystems. While many of them stereotypically roll dung into balls and
cartwheel away with their plunder, others bury the dung where it lies. The
feces may serve as food and shelter for the adults or as nurseries and larders
for their offspring. You might think that an animal that eats poo isn't going to be particularly picky, but science is all about testing ideas. To that end, Sean Whipple and Wyatt
Hoback of the University of Nebraska decided to find out if the beetles
displayed any particular preference for the dung of specific types of 'donors'.
To answer this
question, the researchers baited pitfall traps in the Nebraskan plains with
dung from a variety of native and exotic animals. Herbivores, carnivores and
omnivores were all well represented. Over the next two years, over 9000 dung
beetles from 15 different species were captured in the traps. I really want to
say that the researchers doo-doo-fully checked their traps, but I believe
they’ve suffered enough for science.
They found a few
interesting things. For one thing, these Nebraskan beetles did not prefer
native Nebraskan species such as bison, but were perfectly content to munch on
zebra or donkey manure. Closely related beetle species did not necessarily
prefer the same kind of feces. Overall, the beetles showed a marked
preference for omnivore dung, probably because it was the smelliest. Among the most highly coveted types of feces were those deposited by humans.
Don’t you feel
flattered?
Now for your viewing pleasure, a short clip about dung beetles:
Now for your viewing pleasure, a short clip about dung beetles:
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