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cje ›› 2003, Vol. ›› Issue (4): 60-64.

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Sexual selection of animal

ZHANG Jianjun, ZHANG Zhibin   

  1. National Key Laboratory of Integrated Pest Management in Agriculture, Institute of Zoology, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2002-04-05 Revised:2002-07-15 Online:2003-04-10

Abstract: Sexual reproduction creates a social environment of conflict and competition among individuals as each attempts to maximize its genetic contribution to subsequent generations. Evolution by sexual selection occurs if genetically different individuals differ in their reproductive success as a result of competition within one sex for mates(intrasexual selection)or because of their differential attractiveness to members of the other sex(intersexual selection). Female mate choice co evolved with trait exaggeration or females that are choosy gain direct benefits.

Key words: Dryland, Straw mulch, Winter wheat, Effects of irrigation and N fertilization

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