Author: Terry D. Schwaner

Publisher: Forgotten Books

Published: 2017-12-08

Total Pages: 50

ISBN-13: 9780332551494

Excerpt from Systematic and Ecological Relationships of the Water Snakes Natrix Sipedon and N. Fasciata in Alabama and the Florida Panhandle It has been reported that the range of pleuralis overlaps that of confluens throughout part of the Mississippi River Valley (rhoads, 1895z376; Parker, -85; Woodman, Clay (1936 218) could find no Specimens intermediate between the two forms, but postulated that they do occur. Woodman stated that there was no evidence of intergradation between pleuralis and con fluens in the highlands of Arkansas, although both were collected in the same river on the same day; however, only two specimens, one of each, were taken from the river. Smith (1961z261) suggested confluens influence in occasional specimens of pleuralis from south ern Illinois. He noted that no specimens had been examined which were not clearly referable to either pleuralis or confluens. Anderson (1965 151) noted that the two forms appear to be ecologically sepa rated in Missouri. Barbour stated that confluens was found only in extreme southwestern Kentucky and that it preferred large shallow bodies of water. He noted that pleuralis occurs in southwestern Kentucky, but prefers flowing water. Webb 271) indicated an overlap in. The ranges of pleuralis and confluens in Oklahoma. Gordon reported pleuralis in the same drainage with confluens and N. F. Fasciata. Neill (1946z256, 1954z85) also found pleuralis within the range Of N. F. Fasciata in Alabama, the Florida Panhandle, and Georgia. Neither of these workers found intermediates between the forms in question. Gordon suggested that future studies might reveal distinct habitat differences which per mit overlapping of the range. 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.