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The advanced brain characters demonstrated in Pteropus could not, therefore, be generalized to imply that all bats are similar to primates. More recently, the flying primate hypothesis was soundly rejected when scientists compared the DNA of bats to that of primates. These genetic studies support the monophyly of bats. [4] [5] [6] [7]
The Yinpterochiroptera is a proposed suborder of the Chiroptera based on molecular evidence consisting of the fruit bats and five other microbat families: Rhinopomatidae, Rhinolophidae, Hipposideridae, Craseonycteridae, and Megadermatidae. This model also challenges the view that the Megachiroptera and Microchiroptera are monophyletic.
Echolocation in bats and whales also both necessitate high frequency hearing. The protein prestin, which confers high hearing sensitivity in mammals, shows molecular convergence between the two main clades of echolocating bats, and also between bats and dolphins. [28] [29] Other hearing genes also show convergence between echolocating taxa. [30]
Bats use echolocation to navigate and perceive objects. This method of perception is similar to the human sense of vision. Both sonar and vision are regarded as perceptual experiences. While it is possible to imagine what it would be like to fly, navigate by sonar, hang upside down and eat insects like a bat, that is not the same as a bat's ...
An independent molecular analysis trying to establish the dates when bat ectoparasites evolved came to the conclusion that bedbugs similar to those known today (all major extant lineages, all of which feed primarily on bats) had already diversified and become established over 100 mya (i.e., long before the oldest records for bats, 52 mya ...
They stated that the genetic distance of the three genera was much greater than observed between other bat genera, on average. In contrast to the average of 12.0% inter-generic divergence reported from another study on bats, Aeorestes and Dasypterus varied 18.79%; Aeorestes and Lasiurus varied 19.05%; and Dasypterus and Lasiurus varied 19.79%.
The term polyphyly, or polyphyletic, derives from the two Ancient Greek words πολύς (polús) 'many, a lot of', and φῦλον (phûlon) 'genus, species', [8] [9] and refers to the fact that a polyphyletic group includes organisms (e.g., genera, species) arising from multiple ancestral sources.
The brain is large relative to the body; at 1:67, its brain-to-body mass ratio is higher than that of cats and dogs. [20] [21] The cerebral hemispheres of the brain are extensively convoluted. [22] The brain has well-developed olfactory bulbs and its cerebellum is the most ornamented and