ArticleIntegrative organismal biology (Oxford, England)2026
Sex-Specific Yolk Allocation Revisited: A Test in Starlings and a Review of Evidence in Birds.
Article in Integrative organismal biology (Oxford, England), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Maternal effects play a key role in shaping offspring phenotype variation in birds, particularly through the allocation of different substances into the egg yolk. Among these, androgens and antioxidants are essential for early development. These compounds may exert sex-specific effects, as male and female offspring often differ in their development even from very early phases of their ontogeny. It has been therefore hypothesized that females might strategically allocate different amounts of these yolk compounds depending on the sex of the embryo. To test this hypothesis, we conducted an observational study in a wild population of spotless starlings (
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