Larval Forms


Book Description




The Origin and Evolution of Larval Forms


Book Description

A classic problem in evolutionary biology is the origin of larvae - how and why did they occur? Indeed, it has often been suggested that many entirely unique body plans first originated as retained larvae of ancestral organisms. But what of the larvae themselves? What developmental and evolutionary forces shape and constrain them? These questions and others are dealt with by this international team of leading zoologists and developmental biologists. Intended to contribute to a continuing dialectic, this book presents diverse opinions as well as manifold conclusions. Certain to challenge and intrique, The Origin and Evolution of Larval Forms should be a part of the library of every evolutionary and developmental biologist interested in larvae and their significance.




Larval Forms


Book Description




Writing Naturally


Book Description

A science writer reflects on his journey into the profession.




Larvae and Evolution


Book Description

Many biological facts are irreconcilable with the assumption that larvae and adults evolved from the same genetic stock. The author of this book draws attention to these, and presents his alternative hypothesis that larvae have been transferred from one taxon to another. In his previous book (Larvae and Evolution, 1992), the author used larval transfer to explain developmental anomalies in eight animal phyla. In the present book, he claims that the basic forms of all larvae and all embryos have been transferred from foreign taxa. This leads to a new, comprehensive theory on the origin of embryos and larvae, replacing the discredited 'recapitulation' theory of Haeckel (1866). Metamorphosis, previously unexplained, represents a change in taxon during development.




Gaither's Dictionary of Scientific Quotations


Book Description

This unprecedented collection of 27,000 quotations is the most comprehensive and carefully researched of its kind, covering all fields of science and mathematics. With this vast compendium you can readily conceptualize and embrace the written images of scientists, laymen, politicians, novelists, playwrights, and poets about humankind's scientific achievements. Approximately 9000 high-quality entries have been added to this new edition to provide a rich selection of quotations for the student, the educator, and the scientist who would like to introduce a presentation with a relevant quotation that provides perspective and historical background on his subject. Gaither's Dictionary of Scientific Quotations, Second Edition, provides the finest reference source of science quotations for all audiences. The new edition adds greater depth to the number of quotations in the various thematic arrangements and also provides new thematic categories.




The Origins of Larvae


Book Description

Many biological facts are irreconcilable with the assumption that larvae and adults evolved from the same genetic stock. The author of this book draws attention to these, and presents his alternative hypothesis that larvae have been transferred from one taxon to another. In his previous book (Larvae and Evolution, 1992), the author used larval transfer to explain developmental anomalies in eight animal phyla. In the present book, he claims that the basic forms of all larvae and all embryos have been transferred from foreign taxa. This leads to a new, comprehensive theory on the origin of embryos and larvae, replacing the discredited 'recapitulation' theory of Haeckel (1866). Metamorphosis, previously unexplained, represents a change in taxon during development.




Trees of Life


Book Description

Evolution.




Nursery Earth: The Wondrous Lives of Baby Animals and the Extraordinary Ways They Shape Our World


Book Description

From the author of Monarchs of the Sea, a first-of-its-kind journey into the hidden world of baby animals—hailed as “a gobsmacking delight!” (Sy Montgomery, New York Times–bestselling author of The Soul of an Octopus) It’s time to pay attention to baby animals. From egg to tadpole, chick to fledgling, they offer scientists a window into questions of immense importance: How do genes influence health? Which environmental factors support—or obstruct—life? Entire ecosystems rest on the shoulders (or tentacles, or jointed exoskeletons) of animal babies. At any given moment, babies represent the majority of animal life on Earth. In Nursery Earth, researcher Danna Staaf invites readers into the sibling (and, sometimes, clashing) fields of ecology and developmental biology. The tiny, hidden lives that these scientists study in the lab and in the wild reveal some of nature’s strangest workings: A salamander embryo breathes with the help of algae inside its cells. The young grub of a Goliath beetle dwarfs its parents. The spotted beak of a parasitic baby bird tricks adults of other species into feeding it. Mouse embryos can absorb cancerous cell grafts—and develop into healthy adults. Our bias toward adult animals (not least because babies can be hard to find) means these wonders have long gone under-researched. But for all kinds of animals, if we overlook their babies, we miss out on the most fascinating—and consequential—time in the lives of their species. Nursery Earth makes the case that these young creatures are not just beings in progress but beings in their own right. And our planet needs them all: the maggots as much as the kittens!