Calcium, telomere length, and parasitism in passerines nesting at high elevation
Most organisms are exposed to numerous environmental stressors at various points throughout life, and, through natural selection, organisms' responses to such stressors have been optimized by natural selection for the best fitness outcomes. During the breeding season, wild vertebrates often make a trade-off between current reproduction and self-maintenance when dealing with environmental stressors. The total cost of reproduction is made up of all of the resources and energy that go into activities related to reproduction (e.g., nest building, finding a mate, foraging for food and nutrients related ...
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