The singing of midshipman fish is linked to the melatonin cycle:
The researchers found the singing was controlled by a hormone that helps humans to sleep - melatonin. And looking more closely at how melatonin acts on receptors in different parts of the fish's brain could help explain why it is such a powerful "chemical clock" with a role in the timing of sleep-wake cycles, reproduction and birdsong. Prof Andrew Bass, who led the research, said his curiosity about midshipman fish had been piqued by a paper written in 1924 by an academic called Charles Greene, which described how the male fish would hum at night.
[...] To find out if the humming was controlled by an internal clock, or circadian rhythm, the team first kept a group of midshipman fish in constant light. This almost completely suppressed their humming. "But when [we gave the fish] a melatonin substitute," said Prof Bass, "they continued to hum, though at random times of day without a rhythm. "Melatonin essentially acted as a 'go' signal for the midshipman's nocturnal calling."
(Score: 1, Funny) by Anonymous Coward on Saturday September 24 2016, @02:32PM
Marching causes midshipmen to spontaneously sing "I don' t know but I've been told."
(Score: 2) by ilPapa on Saturday September 24 2016, @03:14PM
I'm pretty sure this story will have the best headline to appear in my RSS feed this weekend.
You are still welcome on my lawn.
(Score: 2) by fishybell on Saturday September 24 2016, @05:26PM
I've met people like this
(Score: 0) by Anonymous Coward on Saturday September 24 2016, @06:19PM
You really.can tell it's springtime in Los Angeles based upon the bass density...