Plant Galls

Plant Galls PDF

Author: Margaret Redfern

Publisher:

Published: 1992

Total Pages: 116

ISBN-13:

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A much-needed new study on plant galls growths on plants formed of plant tissue that are caused by other organisms. Most naturalists have come across oak apples, robin s pincushions, marble galls and witches brooms, a few of the more familiar examples of the strange growths that are plant galls. They are beautiful, often bizarre and colourful, and amazingly diverse in structure and in the organisms which cause them. They have been known since ancient times and have attracted superstitions and folk customs. Both the ancient Greeks and the Chinese used them in herbal medicine, and until well into the nineteenth century, they had a variety of commercial uses: important for dyeing cloth, tanning leather and for making ink. Knowledge of gall types increased during the late nineteenth century and throughout the twentieth century as more species were described and their structure became more clearly understood, and yet even today, little is known about the mechanisms that cause gall formation as well as the life cycles of the organisms that initiate gall growth. Since most galls do not cause any economic damage to crop plants, research funding has traditionally been sparse in this area. However, the insect cycles and gall structures are amazing examples of the complexity of nature. Margaret Redfern explores these fascinating complexities in this latest New Naturalist volume, providing much-needed insight into the variety of galls of different types caused by a wide range of organisms including fungi, insects and mites. She discusses the ecology of galls more generally and focuses on communities of organisms within galls, the evolution and distribution of galls, as well as human and historical perspectives."

Plant Galls of the Western United States

Plant Galls of the Western United States PDF

Author: Ronald A. Russo

Publisher: Princeton University Press

Published: 2021-04-20

Total Pages: 384

ISBN-13: 0691213402

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A photographic guide to 536 species of plant galls found west of the Rockies Beautiful and bizarre, plant galls are growths of various shapes, sizes, and colors produced in response to invading organisms. Describing 536 species of galls and their causative agents, Plant Galls of the Western United States explores this unique realm with stunning photos and fascinating information about the life cycles of the organisms involved. Often species-specific, plant galls can be shaped like stars, baskets, clubs, wigs, bowls, and cups, with colors and combinations that stagger the imagination. This richly illustrated field guide examines how galls develop, and their uses, seasonal appearance and growth rate, predators, and defense mechanisms. The “architects” of galls—bacteria, fungi, mites, moths, beetles, flies, midges, and wasps—are explored in depth, and descriptions are paired with illustrations of these gall-inducing organisms and their typical galls. Gall accounts are divided into those that occur on trees, shrubs, and miscellaneous hosts, including native and ornamental plants. The guide contains a useful glossary and a bibliography. Features 536 gall species—including 120 new to science and 232 that have never appeared in a field guide before Examines for the first time more than 90 species from southwestern oak trees Contains more than 150 species from most of the deserts of the western states

Tracks & Sign of Insects & Other Invertebrates

Tracks & Sign of Insects & Other Invertebrates PDF

Author: Charley Eiseman

Publisher: Stackpole Books

Published: 2010

Total Pages: 594

ISBN-13: 0811736245

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The first-ever reference to the sign left by insects and other North American invertebrates includes descriptions and almost 1,000 color photos of tracks, egg cases, nests, feeding signs, galls, webs, burrows, and signs of predation. Identification is made to the family level, sometimes to the genus or species. It's an invaluable guide for wildlife professionals, naturalists, students, and insect specialists.

Gall Makers

Gall Makers PDF

Author: Anas Rasheed

Publisher: Createspace Independent Publishing Platform

Published: 2017-03-10

Total Pages: 54

ISBN-13: 9781544607924

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Galls are growing plant parts and require nutrients just like other plant parts. It's possible that galls steal vital plant food and adversely affects plant growth. This is most likely a problem when galls are numerous on very young plants. Injury may also occur if galls are numerous on branches or if abundant for several consecutive years. In most cases, however, galls are not abundant enough to harm the plant. So it can be concluding that, management of gall-forming agents like mites, insects, bacteria, fungi etc. are necessary & in management include biological control, chemical control, prevention etc. But, Gall is rich source of tannins,