Interactions Between Cacti and Cactus-feeding Insects PDF Download
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Author: Thomas Edward Miller
Publisher:
ISBN:
Category : Insect-plant relationships
Languages : en
Pages : 0
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Author: Thomas Edward Miller
Publisher:
ISBN:
Category : Insect-plant relationships
Languages : en
Pages : 0
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Author: Thomas Edward Miller
Publisher:
ISBN: 9781109940039
Category : Insect-plant relationships
Languages : en
Pages : 235
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Book Description
I examined sources of variation in the abundance and dynamics of herbivorous insects, and evaluated the consequences of this variation for the fitness and population dynamics of their host-plants. As a model empirical system, I focused on the tree cholla cactus (Opuntia imbricata) and specialist cactus-feeding insects in the Chihuahuan desert of central New Mexico. My work on variation in cactus-insect interactions was conducted at two spatial scales.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1044
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Author:
Publisher:
ISBN:
Category : Natural history
Languages : en
Pages : 928
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Author: John Mann
Publisher: Wentworth Press
ISBN: 9780530127064
Category : History
Languages : en
Pages : 178
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Theodore H. Fleming
Publisher: University of Arizona Press
ISBN: 0816547424
Category : Science
Languages : en
Pages : 386
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Book Description
Although cacti such as the saguaro and organ pipe have come to define the Sonoran Desert for many people, they represent some 170 species of columnar cacti found in many parts of the Americas. These giant plants are so dominant in some ecosystems that many species of animals rely on them for food and shelter. They are pollinated by bats in central Mexico and Venezuela, by birds and bees in northern Mexico and Peru. This book summarizes our knowledge about the ecology, evolution, and conservation of columnar cacti and their vertebrate mutualists to show that the very survival of these cacti depends on animals who pollinate them and disperse their seeds. Contributors from the United States, Mexico, Venezuela, and Colombia explore aspects of geology and evolution that have forged this relationship, review findings in anatomy and physiology, and discuss recent research in population and community ecology as well as conservation issues. Ranging from the Sonoran Desert to the northern Andes, these studies reflect progress in understanding how abiotic and biotic factors interact to influence the evolution, distribution, and abundance of cacti and mutualists alike. In addition, this book examines the ways in which humans, through the process of domestication, have modified these plants for economic benefit. The contributors also review phylogenetic relationships between cacti and nectar-feeding bats in an effort to understand how bat-plant interactions have influenced the evolution of diversity and ecological specialization of both. Because of the number of migratory pollinators feeding on columnar cacti, the authors make conservation recommendations aimed at preserving fully functional ecosystems in arid portions of the New World tropics and subtropics. Columnar Cacti and Their Mutualists provided a benchmark for both conservation efforts and future research.
Author: John Mann
Publisher: Forgotten Books
ISBN: 9780484491594
Category : Science
Languages : en
Pages : 180
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Book Description
Excerpt from Cactus-Feeding Insects and Mites The Proceedings, begun in 1878, are intended for the publication, in separate form, of shorter papers. These are gathered in volumes, octavo in size, with the publication date of each paper recorded in the table of contents of the volume. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Luis Alejandro Abdala
Publisher:
ISBN: 9781321441123
Category :
Languages : en
Pages : 152
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Consumers are strongly influenced by plant phenotypic variation. Such variation may have a genetic or environmental basis, and occurs when plant genotypes or species vary in traits or when patches of co-occurring plants vary in the number of genotypes or species. However, these sources of plant variation have usually been studied separately, their underlying mechanisms are poorly understood, and the evolutionary consequences are largely unknown. This dissertation aims to fill these gaps in research by evaluating: (i) the mechanisms by which environmental- and genetic-driven trait variation in the herb Ruellia nudiflora influence seed-eating caterpillars and wasps parasitizing the latter (Chapter 1), (ii) the evolutionary consequences of R. nudiflora trait variation on insects and of insect effects on the plant (Chapter 2), (iii) the ecological and evolutionary consequences of R. nudiflora genotypic diversity effects on these interactions (Chapter 3), and (iii) the dual effects of Swietenia macrophylla (mahogany) genotypic and neighbor tree species diversity on insect herbivores (Chapter 4), and herbivore-enemy interactions (Chapter 5). By manipulating soil fertility and R. nudiflora genotype identity (progeny of same mother plant) in a common garden, I found that genotype effects were stronger than fertility effects and operated via different mechanisms (Chapter 1). Further analyses revealed that caterpillar selection on plants was dampened by parasitoids, and that increasing soil fertility weakened caterpillar and parasitoid selection on the plant (Chapter 2). A second experiment manipulating genotype number in patches of R. nudiflora revealed that genotypic diversity influenced plant-caterpillar interactions, and that such effects altered caterpillar selection on plant traits; however, parasitoids eliminated this feedback (Chapter 3). Finally, in a large-scale field experiment I found that tree species diversity (but not mahogany genotypic diversity) influenced herbivore abundance (Chapter 4). However, surrounding tree species diversity influenced specialist herbivores (feeding only on mahogany) but not generalists. Additionally, neither source of diversity influenced interactions between parasitic wasps and leaf-mining caterpillars (Chapter 5). Collectively, these results underscore the predictive value of determining the mechanisms and sources of plant phenotypic variation influencing consumers (environmental vs. genetic, genotypic vs. species diversity), and present evidence for novel feedbacks between plants and consumers.
Author:
Publisher:
ISBN:
Category : Cactus
Languages : en
Pages : 158
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Book Description
Insects and mites that attack cactus have been the subject of considerable inquiry over the years in the United States of America, India, Ceylon, South Africa, and Madagascar, as well as in Australia. This publication deals with the species considered to be definitely restricted to the family Cactaceae; it does include, however, certain dipterous scavengers which, although not restricted to these host plants, breed in rotting cactus so generally that they should be classed as cactus feeders. Secondly, the discussion of the life histories, habits, and distribution of the various insects is based on the results of investigations.
Author: Charles Saunders Wisdom
Publisher:
ISBN:
Category : Beetles
Languages : en
Pages : 374
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Book Description
