The Monarch S Mate

Although no one had ever followed North American monarch butterflies on their annual southward journey to Mexico and California, in the 1990s there were well-accepted assumptions about the nature and form of the migration. But to Robert Michael Pyle, a naturalist with long experience in monarch conservation, the received wisdom about the butterflies’ long journey just didn’t make sense. In the autumn of 1996 he set out to uncover the facts, to pursue the tide of “cinnamon sailors” on their long, mysterious flight. Chasing Monarchs chronicles Pyle’s 9,000-mile journey to discover firsthand the secrets of the monarchs’ annual migration. Part road trip, part outdoor adventure, and part natural history study, Pyle’s book overturns old theories and provides insights both large and small regarding monarch butterflies, their biology, and their spectacular migratory travels. Since the book’s first publication, its controversial conclusions have been fully confirmed, and monarchs are better understood than ever before. The Afterword for this volume includes not only updated information on the myriad threats to monarch butterflies, but also various efforts under way to ensure the future of the world’s most amazing butterfly migration.

The fascinating and complex evolutionary relationship of the monarch butterfly and the milkweed plant Monarch butterflies are one of nature's most recognizable creatures, known for their bright colors and epic annual migration from the United States and Canada to Mexico. Yet there is much more to the monarch than its distinctive presence and mythic journeying. In Monarchs and Milkweed, Anurag Agrawal presents a vivid investigation into how the monarch butterfly has evolved closely alongside the milkweed—a toxic plant named for the sticky white substance emitted when its leaves are damaged—and how this inextricable and intimate relationship has been like an arms race over the millennia, a battle of exploitation and defense between two fascinating species. The monarch life cycle begins each spring when it deposits eggs on milkweed leaves. But this dependency of monarchs on milkweeds as food is not reciprocated, and milkweeds do all they can to poison or thwart the young monarchs. Agrawal delves into major scientific discoveries, including his own pioneering research, and traces how plant poisons have not only shaped monarch-milkweed interactions but have also been culturally important for centuries. Agrawal presents current ideas regarding the recent decline in monarch populations, including habitat destruction, increased winter storms, and lack of milkweed—the last one a theory that the author rejects. He evaluates the current sustainability of monarchs and reveals a novel explanation for their plummeting numbers. Lavishly illustrated with more than eighty color photos and images, Monarchs and Milkweed takes readers on an unforgettable exploration of one of nature's most important and sophisticated evolutionary relationships.

Synthesizes current scientific knowledge on the life cycle, behavior, spectacular migration, and conservation of this charismatic insect.

An extraordinary look at the wild butterflies of North America, with hundreds of compelling original photographs See what it’s like to stare a butterfly in the eyes. Lavishly illustrated and scientifically rigorous, this dazzling volume provides a comprehensive visual guide to the butterflies of North America. David Lee Myers’s stunning photography captures these amazing insects in their natural habitats, offering a firsthand look at how butterflies appear in the wild. Featuring more than a hundred species of butterflies, the book highlights the importance of studying these insects as indicator species and discusses not only the taxonomy and biology of butterflies but also the importance of conserving butterfly habitats. A valuable resource for both professional lepidopterists and amateur naturalists, this engaging window into the world of North American butterflies teaches us what we can learn about these beautiful and inspiring creatures, and the incredible things that we can learn from them.

This illustrated field guide describes the biological and ecological world of butterflies

A selection of more than 75 North American species from across the branches of the animal family can be found in this book.

A selection of more than 75 North American species from across the branches of the animal family can be found in this book that has been updated with recent information about changes in endangerment status and recovery, focusing on developments reported by the U.S. Fish and Wildlife Service.

This book complements fact-drive textbooks in introductory biology courses, or courses in biology and society, by focusing on several important points: (1) Biology as a process of doing science, emphasizing how we know what we know. (2) It stresses the role of science as a social as well as intellectual process, one that is always embedded in its time and place in history. In dealing with the issue of science as a process, the book introduces students to the elements of inductive and deductive logic, hypothesis formulation and testing, the design of experiments and the interpretation of data. An appendix presents the basics of statistical analysis for students with no background in statistical reasoning and manipulation. Reasoning processes are always illustrated with specific examples from both the past (eighteenth and nineteenth century) as well as the present. In dealing with science and social issues, this book introduces students to historical, sociological and philosophical issues such as Thomas Kuhn’s concept of paradigms and paradigm shifts, the social-constructions view of the history of science, as well as political and ethical issues such human experimentation, the eugenics movement and compulsory sterilization, and religious arguments against stem cell research and the teaching of evolution in schools. In addition to specific examples illustrating one point or another about the process of biology or social-political context, a number of in-depth case studies are used to show how scientific investigations are originated, designed, carried out in particular social/cultural contexts. Among those included are: Migration of monarch butterflies, John Snow’s investigations on the cause of cholera, Louis Pasteur’s controversy over spontaneous generation, the mass extinction of the dinosaurs, and the Tuskegee syphilis experiment.