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- Bowers, E. Keith; Thompson, Charles F.; Sakaluk, Scott K.; Griffith, Simon
- The journal of animal ecology 2015 v.84 no.2 pp. 473-486
- sex allocation, etc ; Troglodytes aedon; adulthood; adults; animal ecology; breeding; daughters; environmental factors; females; males; models; neonates; nestlings; parents; prediction; rearing; sex ratio; sons; wild birds; Show all 19 Subjects
- ... A major component of sex‐allocation theory, the Trivers–Willard model (TWM), posits that sons and daughters are differentially affected by variation in the rearing environment. In many species, the amount of parental care received is expected to have differing effects on the fitness of males and females. When this occurs, the TWM predicts that selection should favour adjustment of the offspring se ...
- PubMed Central:
- Gélin, Uriel; Wilson, Michelle E.; Coulson, Graeme; Festa‐Bianchet, Marco; Mysterud, Atle
- The journal of animal ecology 2015 v.84 no.1 pp. 239-248
- sex allocation, etc ; Macropus giganteus; breeding season; daughters; environmental factors; females; growth traits; indeterminate growth; lactation; mammals; monitoring; mothers; parturition; prediction; probability; reproductive performance; sons; weaning; Show all 18 Subjects
- ... When resources are scarce, female mammals should face a trade‐off between lactation and other life‐history traits such as growth, survival and subsequent reproduction. Kangaroos are ideal to test predictions about reproductive costs because they may simultaneously lactate and carry a young, and have indeterminate growth and a long breeding season. An earlier study in three of our five study popula ...