期刊
BIOESSAYS
卷 43, 期 6, 页码 -出版社
WILEY
DOI: 10.1002/bies.202000183
关键词
energetic constraints; metabolic allometry; pace of life; positive allometry; sexual selection; sexually selected ornaments; sexually selected weapons
资金
- Smithsonian Tropical Research Institute [2018]
Sexual selection drives the evolution of exaggerated traits in nature, with energetic maintenance costs potentially influencing investment and maintenance of these traits based on body size. The relationships between energy use and body size may shape the relative scaling of sexually selected traits across diverse taxa.
Sexual selection drives the evolution of some of the most exaggerated traits in nature. Studies on sexual selection often focus on the size of these traits relative to body size, but few focus on energetic maintenance costs of the tissues that compose them, and the ways in which these costs vary with body size. The relationships between energy use and body size have consequences that may allow large individuals to invest disproportionally more in sexually selected structures, or lead to the reduced per-gram maintenance cost of enlarged structures. Although sexually selected traits can incur energetic maintenance costs, these costs are not universally high; they are dependent on the relative mass and metabolic activity of tissues associated with them. Energetic costs of maintenance may play a pervasive yet little-explored role in shaping the relative scaling of sexually selected traits across diverse taxa.
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