On the Origin of Allopatric Primate Species and the Principle of Metachromic Bleaching - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook On the Origin of Allopatric Primate Species and the Principle of Metachromic Bleaching write by Tomas Van Roosmalen. This book was released on 2013-11-10. On the Origin of Allopatric Primate Species and the Principle of Metachromic Bleaching available in PDF, EPUB and Kindle. Here we present a theory on the origin of allopatric primate species that follows - at least in Neotropical primates - the irreversible trend to albinotic skin and coat color, called "metachromic bleaching." It explains why primates constitute such an exceptionally diverse, species-rich, and colorful Order in the Class Mammalia. The theory is in tune with the principle of evolutionary change in tegumentary colors called "metachromism," a hypothesis propounded by the late Philip Hershkovitz. Metachromism holds the evolutionary change in hair, skin, and eye melanins following an orderly and irreversible sequence that ends in loss of pigment becoming albinotic, cream to silvery or white. In about all extant sociable Neotropical monkeys we identified an irreversible trend according to which metachromic varieties depart from the saturated eumelanin (agouti, black or blackish brown) archetypic form and then speciate into allopatric taxa following the trend to albinotic skin and coat color. Speciation goes either along the eumelanin pathway (from gray to silvery to cream to white), or the pheomelanin pathway (from red to orange to yellow to white), or a combination of the two. The theory represents a new evolutionary concept that seems to act indefinitely in a non-adaptive way in the population dynamics of male-hierarchic societies of all sociable primates that act territorial. We have tested the theory in all 17 extant Neotropical monkey genera. Our theory suggests the trend to allopatry among metachromic varieties in a social group or population to be the principal behavioral factor that empowers metachromic processes in sociable Neotropical monkeys. It may well represent the principal mechanism behind speciation, radiation, niche separation, and phylogeography in all sociable primates that hold male-defended territories. We urge field biologists who study primate distributions, demography and phylogeography in the Old World to take our theory to the test in the equally colorful Catarrhini.
On the Origin of Allopatric Primate Species and the Principle of Metachromic Bleaching
On the Origin of Allopatric Primate Species and the Principle of Metachromic Bleaching - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook On the Origin of Allopatric Primate Species and the Principle of Metachromic Bleaching write by Marc G. M. van Roosmalen. This book was released on 2013-12-03. On the Origin of Allopatric Primate Species and the Principle of Metachromic Bleaching available in PDF, EPUB and Kindle. Here we present a theory on the origin of allopatric primate species that follows - at least in Neotropical primates - the irreversible trend to albinotic skin and coat color, called "metachromic bleaching". It explains why primates constitute such an exceptionally diverse, species-rich, and colorful Order in the Class Mammalia. The theory is in tune with the principle of evolutionary change in tegumentary colors called "metachromism", a hypothesis propounded by the late Philip Hershkovitz. Metachromism holds the evolutionary change in hair, skin, and eye melanins following an orderly and irreversible sequence that ends in loss of pigment becoming albinotic, cream to silvery or white. In about all extant sociable Neotropical monkeys we identified an irreversible trend according to which metachromic varieties depart from the saturated eumelanin (agouti, black or blackish brown) archetypic form and then speciate into allopatric taxa following the trend to albinotic skin and coat color. Speciation goes either along the eumelanin pathway (from gray to silvery to cream to white), or the pheomelanin pathway (from red to orange to yellow to white), or a combination of the two. The theory represents a new evolutionary concept that seems to act indefinitely in a non-adaptive way in the population dynamics of male-hierarchic societies of all sociable primates that act territorial. We have tested the theory in all 17 extant Neotropical monkey genera. Our theory suggests the trend to allopatry among metachromic varieties in a social group or population to be the principal behavioral factor that empowers metachromic processes in sociable Neotropical monkeys. It may well represent the principal mechanism behind speciation, radiation, niche separation, and phylogeography in all sociable primates that hold male-defended territories. We urge field biologists who study primate distributions, demography and phylogeography in the Old World to take our theory to the test in the equally colorful Catarrhini.
A Thesaurus of English Word Roots
A Thesaurus of English Word Roots - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook A Thesaurus of English Word Roots write by Horace Gerald Danner. This book was released on 2014-03-27. A Thesaurus of English Word Roots available in PDF, EPUB and Kindle. Horace G. Danner’s A Thesaurus of English Word Roots is a compendium of the most-used word roots of the English language. As Timothy B. Noone notes in his foreword: “Dr. Danner’s book allows you not only to build up your passive English vocabulary, resulting in word recognition knowledge, but also gives you the rudiments for developing your active English vocabulary, making it possible to infer the meaning of words with which you are not yet acquainted. Your knowledge can now expand and will do so exponentially as your awareness of the roots in English words and your corresponding ability to decode unfamiliar words grows apace. This is the beginning of a fine mental linguistic library: so enjoy!” In A Thesaurus of English Word Roots, all word roots are listed alphabetically, along with the Greek or Latin words from which they derive, together with the roots’ original meanings. If the current meaning of an individual root differs from the original meaning, that is listed in a separate column. In the examples column, the words which contain the root are then listed, starting with their prefixes, for example, dysacousia, hyperacousia. These root-starting terms then are followed by terms where the root falls behind the word, e.g., acouesthesia and acoumeter. These words are followed by words where the root falls in the middle or the end, as in such terms as bradyacusia and odynacusis.. In this manner, A Thesaurus of English Word Roots places the word in as many word families as there are elements in the word. This work will interest linguists and philologists and anyone interested in the etymological aspects of English language.
Dictionary of Microbiology & Molecular Biology
Dictionary of Microbiology & Molecular Biology - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Dictionary of Microbiology & Molecular Biology write by Paul Singleton. This book was released on 2007-11-12. Dictionary of Microbiology & Molecular Biology available in PDF, EPUB and Kindle. This Third, Revised Edition of a unique, encyclopaedic reference work covers the whole field of pure and applied microbiology and microbial molecular biology, from A to Zythia.
Evolutionary Biology and Conservation of Titis, Sakis and Uacaris
Evolutionary Biology and Conservation of Titis, Sakis and Uacaris - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Evolutionary Biology and Conservation of Titis, Sakis and Uacaris write by Adrian Barnett. This book was released on 2013-04-11. Evolutionary Biology and Conservation of Titis, Sakis and Uacaris available in PDF, EPUB and Kindle. The first detailed collation of the evolution, ecology and conservation of some of South America's least-known, and most endangered, primates.
