Download or read book Studies of Ecology and Morphology in the Plethodontid Salamander Genus Batrachoseps written by Christopher James Evelyn and published by . This book was released on 2016 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolution of interspecific morphological diversity within a clade is one of the fundamental patterns studied in evolutionary biology. These morphological differences may reflect adaptation to different environmental conditions and influence patterns across biogeographical spatial scales and macroevolutionary time scales. Using a multivariate measure of morphological shape and a well-studied phylogenetic hypothesis for the plethodontid salamander genus Batrachoseps, I revealed the strong correlation between morphology and species range size, and tested ecological hypotheses that might explain this relationship. Morphological evolution in Batrachoseps can be generally described as variation on the theme of elongation, a pattern also seen in several families of lizards such as Scincidae and Gymnophthalmidae. In Batrachoseps the most elongate forms appear wormlike with highly reduced limbs. Generalized forms of Batrachoseps are similar in proportion to other small salamanders in the family Plethodontidae, such as Plethodon.
Download or read book The Biology of Plethodontid Salamanders written by Richard C. Bruce and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a state-of-the-art overview of plethodontid salamanders. Readers will find the best current understanding of many aspects of the evolution, systematics, development, morphology, life history, ecology, and field methodology of these animals.
Download or read book Evolutionary Studies of the Plethodontid Salamander Genus Batrachoseps written by Kay Philbrick Yanev and published by . This book was released on 1978 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies in the Behavioral Ecology of the Plethodontid Salamander Batrachoseps Attenuatus written by Virginia Catherine Maiorana and published by . This book was released on 1974 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Economy in Two Species of Plethodontid Salamander written by Samantha Mara Wisely and published by . This book was released on 1997 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Systematics of Salamanders of the Genus Batrachoseps written by John Roscoe Hendrickson and published by . This book was released on 1954 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Systematics of Salamanders of the Genus Batrachoseps written by John Reese HENRICKSON and published by . This book was released on 1954 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Distribution Ecology and Evolutionary History of Plethodontid Salamanders in Tropical America written by David B. Wake and published by . This book was released on 1976 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Salamander Genus Batrachoseps written by John Roscoe Hendrickson and published by . This book was released on 1952 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genome Evolution Morphological Homoplasy and the Phylogeny of Plethodontid Salamanders written by Rachel Lockridge Mueller and published by . This book was released on 2005 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Systematics of Salamanders of the Genus Batrachoseps by John R Hendrickson written by John R. Hendrickson and published by . This book was released on 1954 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Salamanders of the Family Plethodontidae written by Emmett Reid Dunn and published by . This book was released on 1926 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Genetics of Lungless Salamanders Family Plethodontidae in the Gulf Coastal Plain written by Jennifer Yasmin Lamb and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last half century, lungless salamanders (Family Plethodontidae) have been the subject of numerous studies in the fields of ecology and genetics. While most works have focused on the species-rich Eastern Highlands region, there has been a recent shift towards plethodontid assemblages within the Coastal Plain. The research presented herein applies hierarchical occupancy models and both mitochondrial and nuclear genes to address questions pertinent to the biology and conservation of plethodontids within the Gulf Coastal Plain. The results of a multi-species Bayesian single-season occupancy model indicated that two environmental gradients, upstream drainage area and stream drying, influenced the probability of occurrence for multiple species of stream-breeding plethodontids. Further, species varied in their responses to these gradients. A second model was used to ask whether asymmetric interactions also influenced occurrence for three species of brook salamanders (Genus Eurycea). More specifically, the model tested whether the southern two-lined salamander (E. cirrigera) might act as the dominant predator and or competitor to either the three-lined (E. guttolineata) or dwarf (E. quadridigitata) salamanders. The results of this second model suggested that environmental gradients likely work in tandem with negative interactions to shape the distribution of E. guttolienata within the Gulf Coastal Plain. Like hierarchical occupancy models, genetic tools are also shedding light on complex relationships among and within species of lungless salamanders. This research investigated phylogeographic patterns within a wide-ranging species of plethodontid, the spotted dusky salamander (Desmognathus conanti). Sequence data revealed that there were geographically discrete, deeply divergent mitochondrial lineages within D. conanti which may be the result of isolation brought about by fluctuating sea levels during the late Miocene through the Pleistocene. Data from six rapidly mutating microsatellite markers indicated that there had been recent gene flow across some of these lineages in the southern Gulf Coastal Plain. However, these data also suggest that a northern lineage may have remained distinct. The relationships described and occurrence probabilities estimated by the aforementioned models, in combination with conclusions from analyses of genetic data, improve our ability to conserve regional plethodontid biodiversity within this unique physiographic province.
Download or read book New Species of Slender Salamanders Batrachoseps Amphibia Plethodontidae from the Sierra Nevada of California written by Elizabeth L. Jockusch and published by . This book was released on 1998 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slender salamanders, genus Batrachoseps (Caudata: Plethodontidae), are a taxonomically difficult group widely distributed in California as well as in Oregon and northwestern Baja California. Here we describe four new species from the Sierra Nevada based on analysis of allozymes, mitochondrial DNA, and morphology. Specimens of the new species previously have been assigned to other taxa, most recently to Batrachoseps nigriventris and Batrachoseps pacificus relictus. Although each of the new species is morphologically distinct, the differences are subtle and they are appropriately considered cryptic species.
Download or read book Amphibian Declines written by Michael J. Lannoo and published by Univ of California Press. This book was released on 2005-06-15 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Documents in comprehensive detail a major environmental crisis: rapidly declining amphibian populations and the disturbing developmental problems that are increasingly prevalent within many amphibian species.
Download or read book Morphologic and Genetic Studies of the European Plethodontid Salamanders written by Benedetto Lanza and published by Museo Reg. Scienze Nat. Torino. This book was released on 1995 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EVOLUTIONARY ECOLOGY STUDIES ON SALAMANDERS OF THE GENUS Desmognathus PART 1 COMPETITIVE EXCLUSION ALONG A HABITAT GRADIENT BETWEEN TWO SPECIES OF SALAMANDERS IN WEST FLORIDA PART 2 LIFE HISTORY GROWTH AND BODY SIZE VARIATION IN POPULATIONS OF A STREAM SIDE SALAMANDER Desmognathus Brimleyorum ON ADJACENT MOUNTAINS written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
