Lundberg S, Smith H G
Department of Ecology, Theoretical Ecology, University of Lund, Sweden.
J Theor Biol. 1994 Sep 21;170(2):215-8. doi: 10.1006/jtbi.1994.1180.
A novel formulation of the theory of parent-offspring conflict is proposed. The basis of this formulation is an application of traditional life-history theory in combination with simple genetic arguments. The advantage with this approach is conceptual, and the formulation is not in variance with earlier studies in the area. Parent-offspring conflict is, in our formulation, not seen as a conflict between individuals, but as a tradeoff--an age-specific selection pressure acting on a trait, which is favourable when an individual is offspring and disadvantageous when it becomes parent. Using an ESS approach we investigate a simple offspring-wins problem: we find that a gene causing assertiveness of offspring will increase when rare, because the advantage thus gained by an assertive individual when young exceeds the cost incurred as adult by that half of its own offspring which belongs to the same assertive genotype.
本文提出了一种亲代-子代冲突理论的新表述。这种表述的基础是将传统生活史理论与简单的遗传学观点相结合。这种方法的优势在于概念清晰，且该表述与该领域早期研究并不矛盾。在我们的表述中，亲代-子代冲突并非被视为个体之间的冲突，而是一种权衡——一种作用于某一性状的特定年龄选择压力，当个体为子代时这种压力是有利的，而当个体成为亲代时则是不利的。我们使用进化稳定策略（ESS）方法研究了一个简单的子代获胜问题：我们发现，一个导致子代表现出坚定行为的基因在罕见时会增加，因为这种坚定的个体在年轻时获得的优势超过了其成年后属于相同坚定基因型的那部分子代所付出的代价。
