洞穴鱼感官能力的权衡。
Trade-offs in cavefish sensory capacity.
机构信息
Lehrstuhl für Zoologie und Evolutionsbiologie, Department of Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany.
出版信息
BMC Biol. 2013 Jan 24;11:5. doi: 10.1186/1741-7007-11-5.
In caves one repeatedly finds strikingly convergent patterns of evolution in diverse sets of organisms involving 'regressive' traits such as the loss of eyes and pigmentation. Ongoing debate centers around whether these regressive traits arise as the result of neutral evolutionary processes, or rather by natural selection of 'constructive' traits that arise at the expense of eyes and pigmentation. Recent research on cavefish points to the latter, suggesting that the 'constructive' trait vibrational attractive behavior and the reduction of eye size may share a common genetic basis.See research article http://www.biomedcentral.com/1741-7007/10/108.
在洞穴中，人们反复发现不同生物群体中惊人趋同的进化模式，涉及“退化”特征，如眼睛和色素的丧失。目前的争论集中在这些退化特征是由于中性进化过程产生的，还是由于以牺牲眼睛和色素为代价的“建设性”特征的自然选择产生的。最近对洞穴鱼的研究表明，后者更有可能，表明“建设性”特征——振动吸引行为和眼睛大小的减少可能具有共同的遗传基础。参见研究文章http://www.biomedcentral.com/1741-7007/10/108。
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