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Author: Leonard Peter Schultz
Publisher:
ISBN: 9781258345495
Category :
Languages : en
Pages : 180
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Book Description
United States National Museum, Bulletin 214.
Author: Leonard Peter Schultz
Publisher:
ISBN: 9781258345495
Category :
Languages : en
Pages : 180
Get Book Here
Book Description
United States National Museum, Bulletin 214.
Author: Leonard P. Schultz
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 143
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Book Description
This review of the parrotfishes of the world was undertaken in order more correctly to identify and understand the relationships of those species encountered during the preparation of volume 2 of U. S. National Museum Bulletin 202, "Fishes of the Marshall and Marianas Islands." It is based principally on the several thousand specimens, together with many photographs and drawings in color, in notes and sketches made from live parrotfishes.
Author: Leonard P. Schultz
Publisher: Forgotten Books
ISBN: 9780484838832
Category : Science
Languages : en
Pages : 182
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Book Description
Excerpt from Review of the Parrotfishes, Family Scaridae Key to the species of Scarus of the Atlantic cetula Bloch and Schneider guacamaia Cuvier coelestinus Cuvier and Valenciennes coeruleus (bloch) croicensis Bloch hoe fleri (steindachner) 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:
Publisher:
ISBN: 9780731034109
Category :
Languages : en
Pages :
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Book Description
Author: David R. Bellwood
Publisher:
ISBN: 9780731036639
Category : Parrotfishes
Languages : en
Pages : 86
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Book Description
Author: Leonard P. Schultz
Publisher:
ISBN:
Category :
Languages : en
Pages : 143
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Book Description
Author: Harms-Tuohy, C.A.
Publisher: Food & Agriculture Org.
ISBN: 9251354014
Category : Nature
Languages : en
Pages : 68
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Book Description
Parrotfishes are caught primarily by fish traps and spearfishing (targeted and incidental) for personal and commercial consumption. Over half (65 percent) of the responding countries and overseas territories indicated that they have either a complete harvesting ban or fishing regulations in place to promote the protection of parrotfishes to some extent. About half (56 percent) of the responding countries have fishery-independent surveys for parrotfishes, but the metrics evaluated by these surveys are not the same. Similarly, parrotfish-related outreach and education was varied throughout the Caribbean. Twelve countries (32 percent) report having specific parrotfish outreach campaigns or materials, while in other countries campaigns and materials were geared towards marine conservation in general. Most countries agree that long-term protection for parrotfishes is critical, but consensus about the specific measures required to achieve this is lacking.
Author: R. Reinboth
Publisher: Springer Science & Business Media
ISBN: 364266069X
Category : Science
Languages : en
Pages : 464
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Book Description
When Richard Goldschmidt' coined the term "intersexuality" in 1915, he intended it to apply to normally dioecious species which exhibit some kind of mixture between male and female characters. However, as knowledge of the bewildering variability present in the sexual orga nization of members of the animal kingdom has increased, the original meaning of the word has changed. Today many authors define inter sexuality as "the presence of both male and female characteristics, or of intermediate sexual characteristics, in a single individual".2 This more extensive and widely accepted concept justifies the title of our book •. Among all the anatomical and physiological features of living organisms the reproductive system has a unique importance for the perpetuation of the species. Conversely, reproductive processes are of little or no account for the viability of the individual. Therefore, within the framework of general biology reproduction has all too often been looked at solely from the point of view of genetics. Lively discussions about genotypic versus phenotypic sex determination long dominated the sci entific literature on sexuality in animals; this one-sided emphasis has tended to obscure many important facets of an organism's ability to reproduce. Recent developments in current biological research have brought the classic problem of sex differentiation into focus again, and the rapid progress being made in comparative endocrinology has added a new di mension to the study of reproductive biology.
Author: Andrew S. Hoey
Publisher: CRC Press
ISBN: 148222402X
Category : Nature
Languages : en
Pages : 420
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Book Description
Parrotfish are found on almost every coral reef in the world. This ubiquity and uniqueness of their feeding action make them one of the most important groups of fishes within coral reef ecosystems. But why, exactly, are parrotfish so important to reefs? Can the evolution of a particular jaw morphology and feeding action really have had such a large impact on the health and functioning of the world's coral reefs? This book introduces the reader to this fascinating group of fishes (Labridae, Scarinae), from the morphological innovation of a jaw that has the power to bite through solid calcium carbonate, to the threats currently faced by parrotfish populations around the world. It contains new insights into their diet and food processing ability, and lifehistories, and concludes with an overview of emerging and future research directions.
Author: Documentation Associates Information Services Incorporated
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 364
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Book Description
