The Snakes of the Subfamily Dipsadinae PDF Download
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Author: James Arthur Peters
Publisher:
ISBN:
Category : Colubridae
Languages : en
Pages : 256
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Book Description
Author: James Arthur Peters
Publisher:
ISBN:
Category : Colubridae
Languages : en
Pages : 256
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Book Description
Author: JAMES ARTHUR PETERS
Publisher:
ISBN:
Category : Snakes
Languages : en
Pages : 792
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Book Description
Author: John E. Cadle
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Book Description
Author: Coleman Matthew Sheehy
Publisher:
ISBN:
Category : Colubridae
Languages : en
Pages :
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Book Description
The snake subfamily Dipsadinae contains more than 350 ecologically diverse species in about 32 genera. Members of the tribe Dipsadini are gastropod specialists, and many possess a suite of adaptations for eating snails. I tested chemosensory prey preference in Dipsas, Sibon and Tropidodipsas species. Additionally, I described the feeding behavior of Tropidodipsas annuliferus, T. philippii and Sibon nebulatus. All snakes preferred gastropod prey. Tropidodipsas philippii also showed strong interest in the earthworm scent and subsequently consumed earthworms. Snakes snagged or wedged snail shells on surface irregularities and extracted snails using muscular contractions of the body, representing an undescribed feeding behavior in vertebrates. I used two mitochondrial (cyt-b and ND4) and two nuclear (NT3 and DNAH3) genes totaling 3241 bp to test relationships among the Dipsadini and among dipsadine genera. Geophis is deeply nested within the Dipsadini. I synonymize Sibynomorphus with Dipsas and three Sibon species with S. dimidiatus. I identify five new genera and 11 dipsadine tribes: Diaphorolepini, Dipsadini, Leptodeirini, Nothopsini, Tribe nov. 1 (Adelphicos + Cryophis), Tribe nov. 2 (Atractus), Tribe nov. 3 ((Amastridium + Chapinophis) + (Trimetopon (Coniophanes (Rhadinaea + Urotheca)))), Tribe nov. 4 (Chersodromus + Ninia), Tribe nov. 5 (Enuliophis + Enulius), Tribe nov. 6 (Hydromorphus + Tretanorhinus), Tribe nov. 7 (Rhadinophanes + Tantalophis). The tree topology supports the hypothesis that dipsadine snakes experienced a dietary shift and adaptive radiation.
Author: Scott Weidensaul
Publisher: Booksales
ISBN:
Category : Nature
Languages : en
Pages : 136
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Book Description
Presents information about and illustrations of representatives of all of the major families and subfamilies of living snakes.
Author: Walter Ernesto Schargel
Publisher:
ISBN:
Category :
Languages : en
Pages : 180
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Book Description
Author: Hampton Wildman Parker
Publisher: Cornell University Press
ISBN:
Category : Nature
Languages : en
Pages : 132
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Book Description
Author: Douglas M. Considine
Publisher: Springer Science & Business Media
ISBN: 1475769180
Category : Technology & Engineering
Languages : en
Pages : 3529
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Book Description
Advancements in science and engineering have occurred at a surprisingly rapid pace since the release of the seventh edition of this encyclopedia. Large portions of the reference have required comprehensive rewriting and new illustrations. Scores of new topics have been included to create this thoroughly updated eighth edition. The appearance of this new edition in 1994 marks the continuation of a tradition commenced well over a half-century ago in 1938 Van Nostrand's Scientific Encyclopedia, First Edition, was published and welcomed by educators worldwide at a time when what we know today as modern science was just getting underway. The early encyclopedia was well received by students and educators alike during a critical time span when science became established as a major factor in shaping the progress and economy of individual nations and at the global level. A vital need existed for a permanent science reference that could be updated periodically and made conveniently available to audiences that numbered in the millions. The pioneering VNSE met these criteria and continues today as a reliable technical information source for making private and public decisions that present a backdrop of technical alternatives.
Author: Laurence M. Hardy
Publisher: DigiCat
ISBN:
Category : Fiction
Languages : en
Pages : 41
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Book Description
DigiCat Publishing presents to you this special edition of "Morphological Variation in a Population of the Snake, Tantilla gracilis Baird and Girard" by Laurence M. Hardy, Charles J. Cole. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.
Author: Hans E. A. Boos
Publisher: Texas A&M University Press
ISBN: 9781585441167
Category : Nature
Languages : en
Pages : 308
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Book Description
As issues of employee involvement and participation once more evoke considerable controversy, this textbook provides an accessible overview of the main strands, perspectives and debates in current thinking and practice. It adopts a comparative international approach, addressing developments in the United Kingdom and mainland Europe, the United States and elsewhere. The authors identify two main strands of evolution: one driven by managerial interests in enhancing and controlling employee commitment and performance; the other deriving from employees' attempts to influence high-level organizational decision-making. In particular, they examine and analyze: the background of key concepts, issues and philosophies underpinning
