https://scholars.lib.ntu.edu.tw/handle/123456789/628149
標題: | Incorporating an ontogenetic perspective into evolutionary theory of sexual size dimorphism | 作者: | CHUN-CHIA CHOU Iwasa, Yoh Nakazawa, Takefumi |
關鍵字: | Age at maturity; SSD; growth rate; ontogenetic growth; quantitative genetic model; sexual difference | 公開日期: | 二月-2016 | 出版社: | WILEY-BLACKWELL | 卷: | 70 | 期: | 2 | 起(迄)頁: | 369 | 來源出版物: | Evolution; international journal of organic evolution | 摘要: | Sexual size dimorphism (SSD) describes divergent body sizes of adult males and females. While SSD has traditionally been explained by sexual and fecundity selection, recent advances in physiology and developmental biology emphasize that SSD would occur proximately because of sexual differences in ontogenetic growth trajectories (i.e., growth rate and duration). Notably, these ontogenetic traits are subject to energetic or time constraints and thus traded off with fitness components (e.g., survival and reproduction). To elucidate the importance of such ontogenetic trade-offs in the evolution of SSD, we developed a new theoretical framework by extending quantitative genetic models for the evolution of sexual dimorphism in which we reinterpret the trait as body size and reformulate sex-specific fitness in size-dependent manners. More specifically, we assume that higher growth rate or longer growth duration leads to larger body size and higher reproductive success but incurs the cost of lower survivorship or shorter reproduction period. We illustrate how two sexes would optimize ontogenetic growth trajectories in sex-specific ways and exhibit divergent body sizes. The present framework provides new insights into the evolutionary theory of SSD and predictions for empirical testing. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/628149 | ISSN: | 0014-3820 | DOI: | 10.1111/evo.12857 |
顯示於: | 生物多樣性國際碩士學位學程 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。