Download or read book Spatial Relationships and Aggression in the White throated Sparrow Zonotrichia Albicollis written by Emily Dale Kennedy and published by . This book was released on 1979 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Relationships Among Familiar White throated Sparrows Zonotrichia Albicollis when Combined with Strangers written by John E. R. Perry (III) and published by . This book was released on 1984 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Space by Male White throated Sparrows Zonotrichia Albicollis written by James Gordon Jones and published by . This book was released on 1987 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hormonal Mediation of a Unique Behavioral Polymorphism in the White throated Sparrow Zonotrichia Albicollis written by Meredith Bettencourt Swett and published by . This book was released on 2007 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this body of work, I examine how testosterone (T) physiology mediates the life-history trade-off between mating effort and parental care in the White-throated Sparrow. This species exhibits a behavioral polymorphism that occurs in both sexes. White-striped (WS) morphs are more territorially aggressive, sing more frequently and seek more extra-pair copulations. Tan-striped (TS) morphs provision nestlings more frequently. Thus this species roughly illustrates the trade-off between mating effort and parental care. I examine T physiology on three levels: plasma titres, binding globulins and response to the social environment. I ask whether levels of T correlate with morph-specific behavior and does this relationship change with stage in the nesting cycle. I found that WS males have significantly higher plasma levels of T than TS males. This difference is small, but it persisted through the parental stage of the nesting cycle. This suggests that T may mediate differences in mating effort and parental behavior in males, but is likely not the only factor. Female morphs did not differ in plasma T, thus T does not appear to play a similar role in females. Next I ask how corticosterone binding globulin (CBG) modulates T action. I found that CBG binds over 90% of T and is an important modulator of T action in this species. However CBG capacity did not differ between morphs, nor did morphs differ in baseline levels of corticosterone (CORT, a stress hormone that competes with T for binding sites on CBG.) Therefore interactions with CBG and CORT do not affect T action differently in the morphs, and patterns of free T (T not bound to CBG) mirror patterns of total T. Finally I investigated how T physiology responds to a change in the social environment- the establishment of a dominance relationship. WS males exhibited aggression more frequently and tended to dominate TS males. Levels of total T, CBG, CORT and free T were not predictive of future dominance status. Nor did these measures show persistent changes once the dominance relationship was established. The response of T physiology to the formation of a dominance relationship did not differ between morphs.

Download or read book Territorial Behavior of White throated Sparrows Zonotrichia Albicollis with Special Emphasis on Song written by Frederick E. Wasserman and published by . This book was released on 1977 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Aspects of Territorial Behaviour in the White throated Sparrow Zonotrichia Albicollis Gmelin written by Maire Lainevool and published by . This book was released on 1966 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Migratory Behaviour of the White throated Sparrow Zonotrichia Albicollis at Madison Wisconsin written by John Burton Millar and published by . This book was released on 1960 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dominance Interactions and Plumage Polymorphism in the White throated Sparrow Zonotrichia Albicollis written by Barbara Jean Bernier and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Celestial Orientation Cues in the White throated Sparrow Zonotrichia Albicollis written by Doren Carlton Crook and published by . This book was released on 1976 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hormonal Regulation of Migratory Orietation in the White throated Sparrow Zonotrichia Albicollis written by Donn Deveral Martin and published by . This book was released on 1974 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book White throated Sparrow written by and published by . This book was released on 2015 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book White throated Sparrow written by J. B. Falls and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of an Altered Photoperiod Upon the Migratory Orientation in the White throated Sparrow Zonotrichia Albicollis written by Larry John Miller and published by . This book was released on 1976 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Variation in Female Brooding Behavior in the Polymorphic White throated Sparrow Zonotrichia Albicollis written by Heidi L. Murray and published by . This book was released on 2006 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sexual Selection and the Descent of Man written by Bernard Campbell and published by Routledge. This book was released on 2017-07-12 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Just over one hundred and thirty years ago Charles Darwin, in The Descent of Man and Selection in Relation to Sex (1871), developed remarkably accurate conclusions about man's ancestry, based on a review of general comparative anatomy and psychology in which he regarded sexual selection as a necessary part of the evolutionary process. But the attention of biologists turned to the more general concept of natural selection, in which sexual selection plays a complex role that has been little understood. This volume significantly broadens the scope of modern evolutionary biology by looking at this important and long neglected concept of great importance. In this book, which is the first full discussion of sexual selection since 1871, leading biologists bring modern genetic theory and behavior observation to bear on the subject. The distinguished authors consider many aspects of sexual selection in many species, including man, within the context of contemporary evolutionary theory and research. The result is a remarkably original and well-rounded view of the whole concept that will be invaluable especially to students of evolution and human sexual behavior. The lucid authority of the contributors and the importance of the topic will interest all who share in man's perennial fascination with his own history. The book will be of central importance to a wide variety of professionals, including biologists, anthropologists, and geneticists. It will be an invaluable supplementary text for courses in vertebrate biology, theory of evolution, genetics, and physical anthropology. It is especially important with the emergence of alternative explanations of human development, under the rubric of creationism and doctrines of intelligent design.

Download or read book Gaseous Metabolism and Heart Rate of the White throated Sparrow Zonotrichia Albicollis written by Marsha Evon Fanning and published by . This book was released on 1973 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crown Plumage Variation in Zonotrichia Albicollis the White throated Sparrow written by Linda E. Donaldson Vardy and published by . This book was released on 1969 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: