Animals have mysterious ways of finding their way back home

By Steve Mogbo   1 week ago   110
Environment - Top Stories

For some species, neighbourhood pride is more about survival than sentiment. Many creatures travel hundreds of miles to find resources before returning home to mate. How do they know where to go? Signature smells and magnetism help migrators, but some parts of the process are a mystery.

Aquatic animals generally just follow currents to open waters, but aromatic awareness comes in handy when it’s time to reverse course to reproduce. Lake sturgeon, for one, hatch in the pebbled depths of Wisconsin’s Kewaunee River and wend up to 100 miles (161 kilometres) to the Great Lakes, where they mature for a decade or two before the big paddle back. Less than 4 percent settle somewhere new. “They imprint on the river they’re born in,” explains Jessica Collier, a biologist at the US Fish and Wildlife Service in Green Bay. Sturgeon may use their whiskerlike barbels to sense proteins in the water, allowing them to sniff out their route.

Scientists put fanny pack trackers on young lake sturgeon to learn where they wander.

Species covering larger distances can tap Earth’s magnetism instead. Arctic terns fly 12,000 miles (19,312 kilometres) from pole to pole; loggerhead turtles cruise 8,000 miles (12,875 kilometres) from Japan to Baja; and bogong moths flit 600 miles (966 kilometres) across Australia to winter in caves. The bugs are so precise that they often mate and die on the same stretch of rock where they were born.

Still, the moths don’t rely entirely on the planet’s pull, says Eric Warrant, a zoologist from Lund University in Sweden. He likens them to hikers handling a compass: They set a course with cardinal directions, then adjust based on visual landmarks. But even this multisensory system doesn’t tell the whole story. “Their parents have been dead for three months when they’re ready to take wing,” Warrant says. They’ve never been taught where to go yet somehow inherit the instinct to seek specific waypoints.

a insect on the ground: An inch-long bogong moth covers hundreds of miles of Australian terrain to return to its birthplace.

Cracking these gene-driven impulses will provide a fuller picture of how more animals navigate, as well as help us assess if DNA-encoded intuition can withstand human changes like dams and light pollution. And if we do get in the way, research can offer ideas for how to help critters get where they’re going.

[NewsNaira]


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First here but yes they do


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Nnaji Precious
1 week ago

Yes beautiful creatures


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so true...especially dogs


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Beautiful creation


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Using the app and I are


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Yes dogs use their urine to make marks on ground


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Oyins Torulolo
1 week ago

Smart things 


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Email me a copy of the letter to


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Oyins Torulolo
1 week ago

Very very mysterious things 


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We are on our way 😁😊


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Oyins Torulolo
1 week ago

Very mysterious things 


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Yemisi Salako
1 week ago

Yes oh that one is very is very very true


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they have specific pattern o


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Yes thats true


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Fortune Nosa
1 week ago

They have sense


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Itodo Anthony
1 week ago

More sencetive than man


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Paul Moses
1 week ago

Seriously.           


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This is very true


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Animals are living creatures


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