Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3DY, UK.
J Exp Biol. 2013 Jul 1;216(Pt 13):2515-22. doi: 10.1242/jeb.082362.
Electroreception is an ancient vertebrate sense with a fascinating evolutionary history involving multiple losses as well as independent evolution at least twice within teleosts. We review the phylogenetic distribution of electroreception and the morphology and innervation of electroreceptors in different vertebrate groups. We summarise recent work from our laboratory that has confirmed the homology of ampullary electroreceptors in non-teleost jawed vertebrates by showing, in conjunction with previously published work, that these are derived embryonically from lateral line placodes. Finally, we review hypotheses to explain the distribution of electroreception within teleosts, including the hypothesis that teleost ampullary and tuberous electroreceptors evolved via the modification of mechanosensory hair cells in lateral line neuromasts. We conclude that further experimental work on teleost electroreceptor development is needed to test such hypotheses.
电感受是一种古老的脊椎动物感觉，具有迷人的进化历史，涉及多次丧失以及至少在硬骨鱼中两次独立进化。我们回顾了电感受在不同脊椎动物群中的系统发育分布以及电感受器的形态和神经支配。我们总结了我们实验室最近的工作，通过结合以前发表的工作，证实了非硬骨鱼有颌脊椎动物壶腹电感受器的同源性，这些感受器是从侧线基板衍生而来的。最后，我们回顾了一些解释硬骨鱼电感受分布的假说，包括电鳗的壶腹和结节电感受器是通过侧线神经丘机械感觉毛细胞的修饰而进化而来的假说。我们得出结论，需要进一步开展硬骨鱼电感受器发育的实验工作来检验这些假说。
