Get A walk around the pond: insects in and over the water PDF

By Gilbert Waldbauer

ISBN-10: 0674022114

ISBN-13: 9780674022119

ISBN-10: 0674027655

ISBN-13: 9780674027657

A water strider darts throughout a pond, its ft dimpling the skin pressure; a huge water computer virus dives under, wearing his mate’s eggs on his again; hidden between plant roots at the silty backside, a dragonfly larva stalks unwary minnows. slightly skimming the outside, within the air above the pond, swarm mayflies with diaphanous wings. Take this stroll round the pond with Gilbert Waldbauer and become aware of the main amazingly diversified population of the freshwater international. In his hallmark companionable type, Waldbauer introduces us to the aquatic bugs that experience colonized ponds, lakes, streams, and rivers, particularly these in North the United States. alongside the way in which we know about the varied kinds those arthropods take, in addition to their striking modes of life—how they've got radiated into each that you can think of area of interest within the water surroundings, and the way they take care of the demanding situations such an atmosphere poses to breathing, imaginative and prescient, thermoregulation, and copy. We stumble upon the caddis fly larva construction its protecting case and camouflaging it with circulation detritus; eco-friendly darner dragonflies mating midair in an acrobatic wheel formation; ants that experience tailored to the tiny water setting inside of a tumbler plant; and bugs whose diversifications to the aquatic way of life are furnishing biomaterials engineers with rules for destiny functions in and customer items. whereas studying concerning the evolution, usual background, and ecology of those bugs, readers additionally notice greater than a bit in regards to the scientists who learn them. (20060630)

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Additional info for A walk around the pond: insects in and over the water

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The larvae of brine flies, noted Willis Wirth, wriggle everywhere in the water, probably feeding on bacteria and algae. The adults and puparia can be astonishingly and profusely abundant. In 1912, J. M. Aldrich reported that the small puparia of this fly wash up on shores in such astronomical numbers—he estimated 370 million flies per mile of beach—that Indians collected them for food. He quoted from a letter written by William Brewer of Yale University in 1863 about brine flies in Mono Lake, California: They drift up in heaps along the shore, and hundreds of bushels could be collected!

Of the thousands of parasitic wasps in North America, only 51 are aquatic. They are pioneers that, to avoid the fierce competition for terrestrial hosts, have overcome the problems of living in the water to take advantage of the unexploited resources it offers. Broadly speaking, there are two kinds of wasps, parasites and predators. A few of the thousands of predaceous wasps are noticed by many, notably the yellowjackets, often mistaken for bees, that in late summer and early autumn show up to participate in picnics.

Flight slow enough so that the movements of each separate wing can be seen—insect consequently moves slowly but can dodge. Mr. Barnes compared the movements of the wings to that of a windmill, but the revolving movements are lacking; I should say the effect produced by the wings is more like that of a jumpingjack with moveable arms and legs pulled by one string, rather slowly, but, of course, at regular intervals. A well-known and accomplished student of the ecology and behavior of damselflies, Ola Fincke of the University of Oklahoma, wrote in 1992 that giant damselflies, rather than feeding on flying insects as do most damselflies and dragonflies, spe- 36 Where They Live cialize in catching web-building spiders, a behavior shared by only a few other damselflies.

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A walk around the pond: insects in and over the water by Gilbert Waldbauer


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