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Tag: "grasshoppers" at biology news

Post oak grasshoppers emerging

...mologist. "I would have told you there weren't any grasshoppers that chewed on trees." Five years ago, he said... department of entomology labs, began noticing the grasshoppers about four years ago. They were crawling up the side of her Wellborn home. The majority of adult...

Birth rate, competition are major players in hominid extinctions

...n. They eked out a living even if it meant eating grasshoppers or whatever," says Jablonski. "Even with this, modern humans barely hung on from 12 to 16,000 years ago. "Why did Neandertal not adapt culturally?" she asks. "Why did they not start eating bunnies? They did begin fishing." Jablonski believe...

Grasshopper love songs give insight into sensory tuning

...es-specific acoustic communication signals used by grasshoppers to attract mating partners. "Hence, instead of maximizing the average information gained about natural stimuli, the receptors appear to maximize the information gained about specific, but less often occurring aspects of the stimuli," concluded the r...

Locusts' built-in 'surface analysis' ability directs them to fly overland

...sts have shown that a physiological trait of these grasshoppers ?namely their polarization vision -- provides them with a built-in source of "surface analysis" ?a discovery that could pave the way for efforts to effectively combat this periodic scourge by controlling their natural inclination to fly over land rat...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

... to tissues. To protect their bodies, insects like grasshoppers discontinue breathing. "We propose that most insects stop breathing in order to lower their internal oxygen concentration to physiologically safe levels, and that they then substantially reduce gas exchange to maintain the oxygen at these safe value...

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