Which of the following is a conclusion you can make regarding Figure 17.11? aerial terrestrial recruitment 100 200 300 time (ms) 200 300 100 200 300 time (ms) 0. 100 time (ms) 100 200 300 time (ms) 100 200 300 100 200 300 time (ms) time (ms) 0- 100 time (ms) 100 200 300 time (ms) 200 300 A predator type specific calls "alert" call "moving animal" call panic" call 2- 0- 300 200 300 200 300 time (ms) 100 200 100 100 time (ms) time (ms) B other calls Figure 17.11 Sonograms of meerkat alarm calls. A, Aerial refers to calls given when an aerial predator was sighted, and terrestrial refers to calls given when a terrestrial predator was sighted. Recruitment calls prompted feeding meerkats to mob together. B, Generic alarm calls. O Low urgency calls are very similar to medium urgency calls. Aerial calls are similar to terrestrial calls. High urgency recruitment call is the loudest. Each call is unique and conveys a specific message. low urgency (kHz) medium urgency (kHz) high urgency (kHz)
Meerkats are a group of small mammals found in some parts of south Africa. They mainly hunt for small vertebrates, insects etc. and they dig holes or burrows in the sand and forage in their territory both in night and day to capture prey. When they sense an emergency, like if their predators (eagles, fox, etc. ) are nearby, they communicate within their community via a alarm language which is very unique to the meerkats from the rest of the mammals. Biologists have been trying to decode their complex signal language, but have not been able to understand much. Meercats are very social and cooperative group of animals, which have different types of alarm calls to prepare themselves from predators, also during an group effort, such as foraging for food, or burrowing holes in the sand according to the extent of urgency.
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