The theory of ecological speciation suggests that assortative mating evolves most easily when mating preferences aredirectly linked to ecological traits that are subject to divergent selection. Sensory adaptation can ...The theory of ecological speciation suggests that assortative mating evolves most easily when mating preferences aredirectly linked to ecological traits that are subject to divergent selection. Sensory adaptation can play a major role in this process,because selective mating is often mediated by sexual signals: bright colours, complex song, pheromone blends and so on. Whendivergent sensory adaptation affects the perception of such signals, mating patterns may change as an immediate consequence.Alternatively, mating preferences can diverge as a result of indirect effects: assortative mating may be promoted by selectionagainst intermediate phenotypes that are maladapted to their (sensory) environment. For Lake Victoria cichlids, the visual environmentconstitutes an important selective force that is heterogeneous across geographical and water depth gradients. We investigatethe direct and indirect effects of this heterogeneity on the evolution of female preferences for alternative male nuptial colours(red and blue) in the genus Pundamilia. Here, we review the current evidence for divergent sensory drive in this system, extractgeneral principles, and discuss future perspectives [Current Zoology 56 (3): 285-299, 2010].展开更多
This paper selects revulsion and its networking emotion： resentment and disgust as a generic form of novel studies and the subject of moral investigation. Motifs of revulsion create complex bedding texture of the plo...This paper selects revulsion and its networking emotion： resentment and disgust as a generic form of novel studies and the subject of moral investigation. Motifs of revulsion create complex bedding texture of the plot, which introduces personality and inner visions of characters in the novel. It unifies the binding power of narrative history and informs readers various aspects of morality in the Victorian era, in addition, to present a lyrical tone of social ethics. The following analysis takes Eliot＇s Middlemarch as the base text. I shall explain the lexical meaning and textual discussion of revulsion, resentment and disgust spirally within its context, then illustrate with paranthetical examples and different idioms. Later arguments turn to what Eliot defines as faction of human duty in life, which is the nuanced requirement of a subject stands against himself or herself through the disposition of conscience as verdict. This disposition provides unlimited parallels for instinctive presence of internal feelings and thresholds that are constantly affecting moral understandings.展开更多
This paper will examine the essay, ＂Night Walks＂ （2000）, to see how Charles Dickens （1812-1870）, a social-realist writer of the Victorian era, has used elements adapted from the Romantics in order to draw attent...This paper will examine the essay, ＂Night Walks＂ （2000）, to see how Charles Dickens （1812-1870）, a social-realist writer of the Victorian era, has used elements adapted from the Romantics in order to draw attention to the pitiable social conditions of Victorian London. Dickens＇ the realist paradoxically reflected a readiness to think and feel ＂without immediate external excitement＂. He expressed his alignment with Romanticism by way of a cultivation of feeling and empathizing. His genius was, as expressed by Bagehot, ＂essentially irregular and unsymmetrical＂ because he was ＂utterly deficient in the faculty of reasoning＂. His daily, or rather nightly walks provided him with the inspiration to follow the Romantic tradition of writing on walks. The essay under consideration, ＂Night Walks＂, clearly supports the notion that Romanticism was fallaciously opposed to realism. The paper will examine the ways in which the theme, style, and structure of the essay evoke the preoccupation of a Romantic soul--for whom the walk becomes a space for ＂encounter and reflection＂--and the Romantic mind which is empowered by ＂imaginative self definition or discovery＂.展开更多
基金funded by the Swiss National Science Foundation (SNSF)the Netherlands Foundation for Scientific Research (NWO-ALW and NWO-WOTRO)
文摘The theory of ecological speciation suggests that assortative mating evolves most easily when mating preferences aredirectly linked to ecological traits that are subject to divergent selection. Sensory adaptation can play a major role in this process,because selective mating is often mediated by sexual signals: bright colours, complex song, pheromone blends and so on. Whendivergent sensory adaptation affects the perception of such signals, mating patterns may change as an immediate consequence.Alternatively, mating preferences can diverge as a result of indirect effects: assortative mating may be promoted by selectionagainst intermediate phenotypes that are maladapted to their (sensory) environment. For Lake Victoria cichlids, the visual environmentconstitutes an important selective force that is heterogeneous across geographical and water depth gradients. We investigatethe direct and indirect effects of this heterogeneity on the evolution of female preferences for alternative male nuptial colours(red and blue) in the genus Pundamilia. Here, we review the current evidence for divergent sensory drive in this system, extractgeneral principles, and discuss future perspectives [Current Zoology 56 (3): 285-299, 2010].
文摘This paper selects revulsion and its networking emotion： resentment and disgust as a generic form of novel studies and the subject of moral investigation. Motifs of revulsion create complex bedding texture of the plot, which introduces personality and inner visions of characters in the novel. It unifies the binding power of narrative history and informs readers various aspects of morality in the Victorian era, in addition, to present a lyrical tone of social ethics. The following analysis takes Eliot＇s Middlemarch as the base text. I shall explain the lexical meaning and textual discussion of revulsion, resentment and disgust spirally within its context, then illustrate with paranthetical examples and different idioms. Later arguments turn to what Eliot defines as faction of human duty in life, which is the nuanced requirement of a subject stands against himself or herself through the disposition of conscience as verdict. This disposition provides unlimited parallels for instinctive presence of internal feelings and thresholds that are constantly affecting moral understandings.
文摘This paper will examine the essay, ＂Night Walks＂ （2000）, to see how Charles Dickens （1812-1870）, a social-realist writer of the Victorian era, has used elements adapted from the Romantics in order to draw attention to the pitiable social conditions of Victorian London. Dickens＇ the realist paradoxically reflected a readiness to think and feel ＂without immediate external excitement＂. He expressed his alignment with Romanticism by way of a cultivation of feeling and empathizing. His genius was, as expressed by Bagehot, ＂essentially irregular and unsymmetrical＂ because he was ＂utterly deficient in the faculty of reasoning＂. His daily, or rather nightly walks provided him with the inspiration to follow the Romantic tradition of writing on walks. The essay under consideration, ＂Night Walks＂, clearly supports the notion that Romanticism was fallaciously opposed to realism. The paper will examine the ways in which the theme, style, and structure of the essay evoke the preoccupation of a Romantic soul--for whom the walk becomes a space for ＂encounter and reflection＂--and the Romantic mind which is empowered by ＂imaginative self definition or discovery＂.
