Geographic Variation in the North American Cyprinid Fish, Hybognathus Placitus Girard PDF Download
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Author: Abdul Hakim A. Al-Rawi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Abdul Hakim A. Al-Rawi
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Category :
Languages : en
Pages :
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Author: Leonard J. Olund
Publisher: Good Press
ISBN:
Category : Science
Languages : en
Pages : 45
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In 'Geographic Variation in the North American Cyprinid Fish, Hybopsis gracilis,' editors Leonard J. Olund and Frank B. Cross compile a comprehensive anthology that delves into the diverse biological adaptations and geographic distributions of Hybopsis gracilis. This collection not only showcases a range of scientific methodologies and theories but also places the species within the broader context of North American freshwater biodiversity. The anthology stands out for its detailed comparative analyses, committing to a holistic understanding of the species' ecological niche and evolutionary trajectory. The contributions within offer a cogent reminder of the complexity and beauty of nature's designs, vividly encapsulating the variance across climates and habitats without leaning excessively on any single narrative or hypothesis. The backgrounds of Olund and Cross, along with their selected contributing authors, encompass a rich tapestry of expertise in ichthyology, ecology, and evolutionary biology. Their collective work aligns with current conservation priorities and offers essential insights into the adaptive strategies of freshwater fish. This unification of perspectives does more than highlight individual accomplishments; it underscores the value of collaborative research in addressing broader ecological questions. Within this anthology lies an invitation to both the scholarly community and enthusiasts of natural sciences to explore the nuanced interactions between species and their environments. Fostering a deeper appreciation for geographic variation, this volume promises not only to educate but to inspire further inquiry into the biodiversity that underpins our world.
Author: Cross Frank B
Publisher: Hardpress Publishing
ISBN: 9781318021574
Category :
Languages : en
Pages : 56
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Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Author: Leonard J. Olund
Publisher:
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Category :
Languages : en
Pages :
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Author: Frank B. Cross
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Category :
Languages : en
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Author: Alan W. Wells
Publisher:
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Category : Biology
Languages : en
Pages : 0
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Systematics, geographic variation, and postglacial dispersal patterns are examined in Hybognathus hankinsoni (brassy minnow) and Couesius £l u mbe us (lake chub)• Morphological differences between Missouri River basin and Great Lakes basin H. ha n k ins oni were discovered. Northern Alberta and British Columbia populations most closely resemble those from the Great Lakes region. It is postulated that the Missouri form originated in 'he "Preglacial Plains Stream" and survived glaciation in the Missouri basin. The form presently found in the Great Lakes region most likely originated in the pre-Pleistocene Laurentian River system and/or Missouri River system and survived glaciation in the upper Mississippi basin. Dispersal into northern Alberta and British Columbia was probably via Campbell phase Lake Agassiz and glacial Lake Peace. Taxonomic recognition of the two forms does not seem warranted. Existence of three morphological forms of C. plumbeus is confirmed - an upper Columbia River basin "greeni", a Missouri basin "dissimilis", and an eastern and Great Lakes "plumbeus". All three forms intergrade extensively throughout the northwest portion of the geographic range, while in the Lake Superior region "dissimilis" and "plumbeus" seem to be good biological species. Morphological differences between the "dissimilis" and "pluabeus" forms appear related to ecological differences. The "greeni 1 ' form most likely originated in the Columbia River basin, while the "dissimilis" form probably originated in the Missouri River basin. The "plumbeus" form may have originated in the pre-Pleistocene Laurentian River system and survived glaciation in an eastern lower Great Lakes refugium. Phenetic and cladistic analyses suggest that the genus Couesius is most closely related to the nominal genus Margari neus and it is suggested that they be combined into a single genus, Couesius. Proposals to unite Couesius with Hy bopsis or Sesotilus are not supported. Evidence indicating possible hybridization between Couesius olu mbe us and Semotilus (Xargariscus) sarcrarita is presented.
Author: Kansas Academy of Science
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1674
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Vols. for 1881/82- include the Report of the secretary.
Author: Dean A. Hendrickson
Publisher:
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Category : Agosia chrysogaster
Languages : en
Pages : 276
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Author: Jülide Tanyolaç
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 32
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Author: David Dewitt Oakey
Publisher:
ISBN:
Category : Speckled dace
Languages : en
Pages : 446
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