Download or read book Mystacocarid written by Robert William Pennak and published by . This book was released on 2012-06-01 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smithsonian Miscellaneous Collections, V103, No. 9, February 23, 1943.
Download or read book Mystacocarida written by Robert William Pennak and published by . This book was released on 1943 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mystacocarida a New Order of Crustacea from Intertidal Beaches in Massachusetts and Connecticut with Two Plates written by Robert William Pennak and published by . This book was released on 1943 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mystacocarida a New Order of Crustacea from Intertidal Beaches in Massachusetts and Connecticut By Robert W Pennak and Donald J Zinn Washington 1943 11 S 2 S Abb 8 written by Donald J. Zinn and published by . This book was released on 1943 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mystacocarida a New Order of Crustacea from Intertidal Beaches in Massachusetts and Connecticut written by Robert W. Pennak and published by . This book was released on 1943 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NOAA Technical Report NMFS SSRF written by and published by . This book was released on 1979 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NOAA Technical Report NMFS SSRF written by United States. National Marine Fisheries Service and published by . This book was released on 1971 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Scientific Report written by and published by . This book was released on 1965 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Crustacean Larvae written by Joel W. Martin and published by JHU Press. This book was released on 2014-07 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Reproductive Biology of Crustaceans written by Elena Mente and published by CRC Press. This book was released on 2008-01-04 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crustaceans adapt to a wide variety of habitats and ways of life. They have a complex physiological structure particularly with regard to the processes of growth (molting), metabolic regulation, and reproduction. Crustaceans are ideal as model organisms for the study of endocrine disruption and stress physiology in aquatic invertebrates. This book
Download or read book References for the Identification of Marine Invertebrates on the Southern Atlantic Coast of the United States written by Richard E. Dowds and published by . This book was released on 1979 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biology of Crustacea written by Bozzano G Luisa and published by Academic Press. This book was released on 1982-09-28 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Biology of Crustacea
Download or read book The Gulf of Maine Temperature Structure Between Bar Harbor Maine and Yarmouth Nova Scotia written by Robert J. Pawlowski and published by . This book was released on 1978 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolution and Phylogeny of Pancrustacea written by Frederick R. Schram and published by Oxford University Press. This book was released on 2021 with total page 873 pages. Available in PDF, EPUB and Kindle. Book excerpt: "As a young and impetuous gradate student, I thought that sorting out the phylogeny of crustaceans would simply take but a little time and concerted effort to eventually reveal the truth. Everyone could then agree and further research would proceed apace. How naïve I was. First of all, I had never heard of Kurt Gödel's incompleteness theorems and hence the impossibility of achieving such an end. But even so, what progress we might have made turned out to take longer than anyone could have imagined, and the effort would be immense involving many people and a number of laboratories-and that task still continues. What no one could foresee in the 1960s was that the focus of everyone's attentions would completely transform. Traditional pure anatomy would be augmented with more sophisticated developmental genetic work. Concurrent with that effort molecular sequencing would become a remarkably effective tool. And with these new sources of data, the concept of "crustaceans" would yield to a new construct-Pancrustacea-within which the arthropods that we referred to by the name of "Crustacea" became a series of monophyletic smaller groups that mark a paraphyletic transition from a mandibulate ancestor all the way up to a crown group that few in the 1960s expected-Hexapoda emerged within the pancrustaceans"--
Download or read book Ontogeny and Phylogeny written by Stephen Jay Gould and published by Harvard University Press. This book was released on 1985-01-17 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Ontogeny recapitulates phylogeny” was Haeckel’s answer—the wrong one—to the most vexing question of nineteenth-century biology: what is the relationship between individual development (ontogeny) and the evolution of species and lineages (phylogeny)? In this, the first major book on the subject in fifty years, Stephen Jay Gould documents the history of the idea of recapitulation from its first appearance among the pre-Socratics to its fall in the early twentieth century. Mr. Gould explores recapitulation as an idea that intrigued politicians and theologians as well as scientists. He shows that Haeckel’s hypothesis—that human fetuses with gill slits are, literally, tiny fish, exact replicas of their water-breathing ancestors—had an influence that extended beyond biology into education, criminology, psychoanalysis (Freud and Jung were devout recapitulationists), and racism. The theory of recapitulation, Gould argues, finally collapsed not from the weight of contrary data, but because the rise of Mendelian genetics rendered it untenable. Turning to modern concepts, Gould demonstrates that, even though the whole subject of parallels between ontogeny and phylogeny fell into disrepute, it is still one of the great themes of evolutionary biology. Heterochrony—changes in developmental timing, producing parallels between ontogeny and phylogeny—is shown to be crucial to an understanding of gene regulation, the key to any rapprochement between molecular and evolutionary biology. Gould argues that the primary evolutionary value of heterochrony may lie in immediate ecological advantages for slow or rapid maturation, rather than in long-term changes of form, as all previous theories proclaimed. Neoteny—the opposite of recapitulation—is shown to be the most important determinant of human evolution. We have evolved by retaining the juvenile characters of our ancestors and have achieved both behavioral flexibility and our characteristic morphology thereby (large brains by prolonged retention of rapid fetal growth rates, for example). Gould concludes that “there may be nothing new under the sun, but permutation of the old within complex systems can do wonders. As biologists, we deal directly with the kind of material complexity that confers an unbounded potential upon simple, continuous changes in underlying processes. This is the chief joy of our science.”
Download or read book Metabolism and Growth written by Talbot Waterman and published by Elsevier. This book was released on 2012-12-02 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Physiology of Crustacea, Volume I: Metabolism and Growth deals with the physiological aspects of metabolism and growth in hundreds of species and higher taxa of Crustacea. The book explores processes related to the morphology and development of crustaceans, from blood chemistry to feeding and nutrition, digestion, excretion, molting, autotomy, and regeneration. This volume is organized into 17 chapters and begins with an overview of crustacean biology and systematics as well as ontogeny and phylogeny. The book then discusses the metabolic requirements of crustacean respiration, the mechanisms of gas exchange, and respiratory transport. The next chapters focus on the biochemistry of animal pigments such as hemoglobin and melanin and the crustacean blood chemistry, blood flow, heart function, feeding mechanisms, and vitamin contents. The book also discusses the digestive system of crustaceans, along with osmotic and ionic regulation; the excretory system; the link between ecology and metabolism; and sex differentiation in Crustacea. This book is written primarily for biologists, physiologists, and zoologists, as well as advanced students and research workers who are interested in problems of comparative physiology.
Download or read book Arthropod Relationships written by Richard A. Fortey and published by Springer Science & Business Media. This book was released on 1997-12-31 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: The arthropods contain more species than any other animal group, but the evolutionary pathways which led to their current diversity are still an issue of controversy. Arthropod Relationships provides an overview of our current understanding, responding to the new data arising from sequencing DNA, the discovery of new Cambrian fossils as direct evidence of early arthropod history, and developmental genetics. These new areas of research have stimulated a reconsideration of classical morphology and embryology. Arthropod Relationships is the first synthesis of the current debate to emerge: not since the volume edited by Gupta was published in 1979 has the arthropod phylogeny debate been, considered in this depth and breadth. Leaders in the various branches of arthropod biology have contributed to this volume. Chapters focus progressively from the general issues to the specific problems involving particular groups, and thence to a consideration of embryology and genetics. This wide range of disciplines is drawn on to approach an understanding of arthropod relationships, and to provide the most timely account of arthropod phylogeny. This book should be read by evolutionary biologists, palaeontologists, developmental geneticists and invertebrate zoologists. It will have a special interest for post-graduate students working in these fields.
