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The Alston’s singing mouse (Scotinomys teguina) and Chiriqui singing mouse (S. xerampelinus) share habitat in the cloud forests on the border between cheap nfl jerseys Costa Rica and Panama. Pasch’s observations showed that the Chiriqui singing mice prefer the cooler temperatures found at higher altitudes of the cloud forest.
The smaller Alston’s singing mouse tolerates the warmer temperatures and lower altitudes, but will move to higher altitudes if no Chiriqui singing mice are around. In some areas of the cloud forest, however, you can find both species. And because the mice eat the same food, you would think that sharing a habitat would bring them into conflict.
Yet physical confrontations can be risky for both parties, and many other animals have evolved ways to establish territory and dominance without risking bodily harm. Pasch wanted to know whether singing mice used vocalizations to do something similar.
In the areas of the cloud forest where both species of these singing mice live, Pasch and colleagues trapped some of the mice and recorded their vocalizations. Unlike simple squeaks or chirps, Pasch said that the “songs” of these mice are much more complex.
They last longer and have multiple notes, and the mice can cheap authentic jordans modulate both the amplitude and the frequency of the calls. Behavioral experiments revealed that Chiriqui mice You sang when they detected intruders of either species on their NFL Jerseys China turf.
The smaller Alston’s singing mouse, however, sang only when other members of its own species violated turf boundaries. If it heard the song of the Chiriqui mouse, Cheap Oakleys the Alston’s singing mouse fell silent and left the area. Males of both species use song to attract mates.