Larval Forms
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Author | : Brian K. Hall |
Publisher | : Gulf Professional Publishing |
Total Pages | : 466 |
Release | : 1999-01-12 |
Genre | : Nature |
ISBN | : 9780127309354 |
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.
Author | : Alan L. Shanks |
Publisher | : |
Total Pages | : 328 |
Release | : 2001 |
Genre | : Science |
ISBN | : |
The study of larval invertebrates is a vital and growing field in contemporary marine science. The key ecological role of larvae in determining adult population sizes has been recognized for decades and has inspired extensive research. This volume, the first of its kind, is an identification guide to the planktonic larvae of shallow subtidal and intertidal invertebrates common to the Pacific Northwest coast.Each chapter provides a brief background to the larval biology of an invertebrate group; keys, drawings, and descriptions for the identification of larvae; a list of the species present in the Pacific Northwest; and a reference section. The geographic range covered is roughly from southeast Alaska to northern California; however many of the species are found along the entire coast of California, as far south as Baja California.An essential reference for anyone attempting to identify larval invertebrates from zooplankton samples, this working manual is intended for students as well as scientists and researchers. It offers an important new resource for marine biologists, biological oceanographers, marine and intertidal ecologists, and especially larval biologists.
Author | : Walter Garstang |
Publisher | : |
Total Pages | : 98 |
Release | : 1966 |
Genre | : Larvae |
ISBN | : |
Author | : Walter Garstang |
Publisher | : Heinemann Educational Publishers |
Total Pages | : 98 |
Release | : 1985 |
Genre | : Science |
ISBN | : 9780226284231 |
Author | : Joel W. Martin |
Publisher | : JHU Press |
Total Pages | : 385 |
Release | : 2014-07 |
Genre | : Reference |
ISBN | : 1421411970 |
An illustrated guide to the sweeping diversity of crustacean larval forms. Winner of the CHOICE Outstanding Academic Title of the Choice ACRL Crustaceans—familiar to the average person as shrimp, lobsters, crabs, krill, barnacles, and their many relatives—are easily one of the most important and diverse groups of marine life. Poorly understood, they are among the most numerous invertebrates on earth. Most crustaceans start life as eggs and move through a variety of morphological phases prior to maturity. In Atlas of Crustacean Larvae, more than 45 of the world's leading crustacean researchers explain and illustrate the beauty and complexity of the many larval life stages. Revealing shapes that are reminiscent of aliens from other worlds—often with bizarre modifications for a planktonic life or for parasitization, including (in some cases) bulging eyes, enormous spines, and aids for flotation and swimming—the abundant illustrations and photographs show the detail of each morphological stage and allow for quick comparisons. The diversity is immediately apparent in the illustrations: spikes that deter predators occur on some larvae, while others bear unique specializations not seen elsewhere, and still others appear as miniature versions of the adults. Small differences in anatomy are shown to be suited to the behaviors and survival mechanisms of each species. Destined to become a key reference for specialists and students and a treasured book for anyone who wishes to understand "the invertebrate backbone of marine ecosystems," Atlas of Crustacean Larvae belongs on the shelf of every serious marine biologist.
Author | : Theodor Mortensen |
Publisher | : |
Total Pages | : 340 |
Release | : 1921 |
Genre | : Echinodermata |
ISBN | : |
Author | : Tyler J. Carrier |
Publisher | : Oxford University Press |
Total Pages | : 365 |
Release | : 2018 |
Genre | : Science |
ISBN | : 0198786964 |
"More than seventy percent of the earth's surface is covered by the ocean which is home to a staggering and sometimes overwhelming diversity of organisms, the majority of which reside in pelagic form. Marine invertebrate larvae are an integral component of this pelagic diversity and have stimulated the curiosity of researchers for centuries. This accessible, upper-level text provides an important and timely update on the topic of larval evolution and ecology, representing the first major synthesis of this interdisciplinary field for more than 20 years. The content is structured around four major areas: evolutionary origins and transitions in developmental mode; functional morphology and ecology of larval forms; larval transport, settlement, and metamorphosis; larval ecology in extreme and changing environments. This novel synthesis integrates traditional larval ecology with life history theory, evolutionary developmental biology, and modern genomics research to provide a research and teaching tool for decades to come." -- from the rear cover.
Author | : Walter Garstang |
Publisher | : |
Total Pages | : 85 |
Release | : 1954 |
Genre | : Zoology |
ISBN | : |
Author | : D. Williamson |
Publisher | : Springer Science & Business Media |
Total Pages | : 235 |
Release | : 2013-03-09 |
Genre | : Science |
ISBN | : 9401580774 |
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.
Author | : Garstang |
Publisher | : Wiley-Blackwell |
Total Pages | : |
Release | : |
Genre | : |
ISBN | : 9780631070900 |