Book contents
- Frontmatter
- Dedication
- Contents
- Contributors
- Acknowledgements
- Preface
- 1 Animal homosexuality in evolutionary perspective
- 2 The comparative study of homosexual behaviour
- 3 Genetics of homosexuality
- 4 Ontogenetic processes
- 5 The endocrine and nervous systems: a network of causality for homosexual behaviour
- 6 Immunology and homosexuality
- 7 Sexual segregation effects
- 8 The social, life history and ecological theatres of animal homosexual behaviour
- 9 Homosexual behaviour in primates
- 10 A Biosocial Model for the evolution and maintenance of homosexual behaviour in birds and mammals
- Appendix 1 Glossary
- Appendix 2 Predictions of the Synthetic Reproductive Skew Model of Homosexuality and results obtained in the comparative tests of the model carried out in birds and mammals
- Appendix 3 Comments on further results of comparative analyses of independent contrasts reported in the full correlation matrices of birds and mammals
- References
- Index
- Plates
Appendix 3 - Comments on further results of comparative analyses of independent contrasts reported in the full correlation matrices of birds and mammals
Published online by Cambridge University Press: 05 July 2014
- Frontmatter
- Dedication
- Contents
- Contributors
- Acknowledgements
- Preface
- 1 Animal homosexuality in evolutionary perspective
- 2 The comparative study of homosexual behaviour
- 3 Genetics of homosexuality
- 4 Ontogenetic processes
- 5 The endocrine and nervous systems: a network of causality for homosexual behaviour
- 6 Immunology and homosexuality
- 7 Sexual segregation effects
- 8 The social, life history and ecological theatres of animal homosexual behaviour
- 9 Homosexual behaviour in primates
- 10 A Biosocial Model for the evolution and maintenance of homosexual behaviour in birds and mammals
- Appendix 1 Glossary
- Appendix 2 Predictions of the Synthetic Reproductive Skew Model of Homosexuality and results obtained in the comparative tests of the model carried out in birds and mammals
- Appendix 3 Comments on further results of comparative analyses of independent contrasts reported in the full correlation matrices of birds and mammals
- References
- Index
- Plates
Summary
In this appendix I briefly comment on the results of comparative analyses of independent contrasts reported in the full correlation matrices of birds and mammals that produced either significant (p < 0.05) or marginally not significant (0.10 < p < 0.05) correlations, using an α value not corrected with the Dunn–Šidák method.
Birds
Among the results that are significant at the uncorrected α = 0.05 (see Table 8.7) it is worth mentioning that:
(a) Increased evolutionary trends towards sociality are associated with evolutionary trends towards polygamy.
(b) As social unit size tends to increase over evolutionary time, affiliative same-sex mounting tends to decrease.
These results are consistent with a higher level of heterosexual competition among members of a social group, as expressed in polygamous mating systems, leading to lower levels of affiliative same-sex mounting, especially in larger groups.
(c) Evolutionary trends towards dominance same-sex mounting are associated with evolutionary shifts towards plumage sexual monochromatism. This trend may result from the marginally non-significant evolutionary association of sexual plumage monochromatism with increased sociality (see below).
(d) …
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- Animal HomosexualityA Biosocial Perspective, pp. 441 - 442Publisher: Cambridge University PressPrint publication year: 2010