Download or read book Additional Observations on Sexual Selection in Spiders of the Family Attidae written by George Williams Peckham and published by . This book was released on 1890 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations on Sexual Selection in Spiders of the Family Attidae written by George Williams Peckham and published by . This book was released on 1889 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations on Sexual Selection in Spiders of the Family Attidae written by George Williams Peckham and published by . This book was released on 1889 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations on Sexual Selection in Spiders of the Family Attidae written by George Williams Peckham and published by . This book was released on 1889 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations on Sexual Selection in Spiders of the Family Attid And Protective Resemblance in Spiders Classic Reprint written by George W. Peckham and published by Forgotten Books. This book was released on 2017-12-22 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Observations on Sexual Selection in Spiders of the Family Attidae, And, Protective Resemblance in Spiders Females. The most vigorous and energetic usually being able to rear most offspring, intensity of color, if dependent on or cor related with vigor, would tend to increase. But as differences of Color depend upon minute chemical or structural differences in the organism, increasing vigor acting unequally on different portions of the integument, and often producing at the same time abnormal developments of hair, horns, scales, feathers, etc., would almost necessarily lead also to variable distribution of color and thus to the production of new tints and markings. These acquired colors would be transmitted to both sexes, or to one only, according as they first appeared at an early age, or in adults of one sex; but in all cases where an increasing development of color became disadvantageous to the female, it would be checked by natural selection; and thus produce the numerous instances of protective coloring in the female only, 'which occur in these two groups, birds and butter flies.1. 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.
Download or read book Additional Observations on Sexual Selection in Spiders of the Family Attidae written by George W. Peckham and published by . This book was released on 1890 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Additional Observations on Sexual Selection in Spiders of the Family Attidae With Some Remarks on Mr Wallace s Theory of Sexual Ornamentation written by George Williams Peckham and published by . This book was released on 1890 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations on Sexual Selection in Spiders of the Family Attid With Plates written by George Williams Peckham and published by . This book was released on 1889 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observations on Sexual Selection in Spiders of the Family Attid By G W and E G Peckham written by Elizabeth Gifford Peckham and published by . This book was released on 1889 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Additional Observations on Sexual Selection in Spiders of the Family Attid written by George W. Peckham and published by Forgotten Books. This book was released on 2016-11-18 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Additional Observations on Sexual Selection in Spiders of the Family Attid With Some Remarks on Mr. Wallace's Theory of Sexual Ornamentation On seeing the female, which he does when eight or ten inches away, he approaches her slowly; when within three or four inches lie-begins to sway from side to side by bending all the legs on'on'e side and extending the opposite ones, and then reversing the process, at the same time advancing. The palpi are stretched out sideways, thus exposing the blue clypeus. As he moves, the female eyes him attentively and seems to be interested in his display. When quite near her he raises the first legs and holds them perpendicularly upward, and then, as he comes closer, lowers them so as to touch her. This seems to frighten her, and she runs Off. The whole performance is repeated six or eight times before she finally yields, either to his boldness and persistence, as Mr. Wallace would haveit, or to the combination of these qualities with grace and beauty. 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.
Download or read book Additional Observations on Sexual Selection in Spiders of the Family Attid written by George Williams Peckham and published by . This book was released on 1890 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin of the Wisconsin Natural History Society written by Wisconsin Natural History Society and published by . This book was released on 1913 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Papers on Spiders written by George Williams Peckham and published by . This book was released on 1887 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contributions from the Zoological Laboratory of the University of Pennsylvania written by University of Pennsylvania. Zoological Laboratory and published by . This book was released on 1911 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sexual Selection written by Malte Andersson and published by Princeton University Press. This book was released on 2019-12-31 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Bright colors, enlarged fins, feather plumes, song, horns, antlers, and tusks are often highly sex dimorphic. Why have males in many animals evolved more conspicuous ornaments, signals, and weapons than females? How can such traits evolve although they may reduce male survival? Such questions prompted Darwin's perhaps most scientifically controversial idea--the theory of sexual selection. It still challenges researchers today as they try to understand how competition for mates can favor the variety of sex-dimorphic traits. Reviewing theoretical and empirical work in this very active field, Malte Andersson, a leading contributor himself, provides a major up-to-date synthesis of sexual selection. The author describes the theory and its recent development; examines models, methods, and empirical tests; and identifies many unsolved problems. Among the topics discussed are the selection and evolution of mating preferences; relations between sexual selection and speciation; constraints on sexual selection; and sex differences in signals, body size, and weapons. The rapidly growing study of sexual selection in plants is also reviewed. This volume will interest students, teachers, and researchers in behavioral ecology and evolutionary biology.
Download or read book Contributions from the Zoological Laboratory written by and published by . This book was released on 1911 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contributions from the Zoological Laboratory of the University of Pennsylvania written by and published by . This book was released on 1911 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
