By Fenton, Melville Brockett; Simmons, Nancy B
There are greater than 1,300 species of bats - or nearly 1 / 4 of the world's mammal species. yet prior to you scale back in worry from those bushy "creatures of the night," ponder the bat's primary function in our atmosphere. A unmarried ten-gram bat could consume a number of thousand bugs in an evening. through the tropics and subtropics, fruit and nectar-feeding bats also are the most important to the lives of vegetation, offering both toxins and seed dispersal. Bats: an international of technology and secret provides those interesting nocturnal creatures in a brand new gentle. Lush, full-color pictures painting bats in flight, feeding, and mating in perspectives that exhibit them in extraordinary element. The pictures additionally take the reader into the roosts of bats, from caves and mines to the tents a few bats make from leaves. A complete consultant to what scientists find out about the realm of bats, the publication starts off with a glance at bats' origins and evolution. It is going directly to tackle a number of questions regarding flight, nutrition, habitat, replica, and social constitution: Why perform a little bats stay by myself and others in huge colonies? whilst do bats reproduce and take care of their younger? How has the power to fly - exact between mammals - inspired bats' mating habit? A bankruptcy on biosonar, or echolocation, takes readers in the course of the approach of high-pitched calls bats emit to navigate and trap prey. greater than half the world's bat species are both in decline or already thought of endangered, and the ebook concludes with feedback for what we will be able to do to guard those species for destiny generations to profit from and revel in. From the tiny "bumblebee bat"--The world's smallest mammal - to the large Golden-Crowned Flying Fox, whose wingspan exceeds 5 toes, Bats provides a breathtaking view of 1 of the world's such a lot attention-grabbing but least-understood species. -- from airborne dirt and dust jacket. Read more...
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Extra info for Bats : a world of science and mystery
40 Bats: A World of Science and Mystery Chapter 2: Ancient Bats 41 Birds appear in the fossil record in the Upper Jurassic, about 160 million years ago—nearly 100 million years before bats. Having survived the extinction event at the end of Cretaceous, birds were diverse and well established worldwide by the time bats came on the scene. Evolutionary biologists wonder what made it possible for bats to evolve in the face of potential competition from birds for food, airspace and roost sites. Nocturnal activity may have been an important factor.
Modern bat faunas are much more diverse in tropical forests than in grassland environments, so perhaps the differences in diversity seen over time at Riversleigh reflect ecological changes. Conversely, preservation may be biasing the composition of these faunas. For example, the Pliocene bat fossils come mostly from a single fossil cave at Riversleigh known as Rackham’s Roost. Any local bat species not roosting in that cave when the deposits were laid down remain undiscovered. This might be one explanation for the absence of Old World Fruit Bats at Riversleigh—most living species roost in trees and avoid caves.
Haupt (bottom), courtesy of the Senkenberg Messel Collection, Frankfurt. Chapter 2: Ancient Bats 49 A Messel Pit, a World Heritage Site located about 35 km. southwest of Frankfurt, Germany, contains even more species of extinct Eocene bats. Unlike the Green River, where bat fossils are exceedingly rare, Messel is rich with bats—over 700 individual bat fossils have been collected there. 5 million years old. The pit that forms the Messel Oil Shale site used to be a quarry, but it is now protected because of the rich fossil fauna that it preserves.