我的思维在哪里？海绵动物和扁盘动物可能是如何失去神经细胞类型的。
Where is my mind? How sponges and placozoans may have lost neural cell types.
作者信息
Ryan Joseph F, Chiodin Marta
机构信息
Whitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St Augustine, FL 32080, USA Department of Biology, University of Florida, Gainesville, FL 32611, USA
Whitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St Augustine, FL 32080, USA Department of Biology, University of Florida, Gainesville, FL 32611, USA.
出版信息
Philos Trans R Soc Lond B Biol Sci. 2015 Dec 19;370(1684). doi: 10.1098/rstb.2015.0059.
Recent phylogenomic evidence suggests that ctenophores may be the sister group to the rest of animals. This phylogenetic arrangement opens the possibility that sponges and placozoans could have lost neural cell types or that the ctenophore nervous system evolved independently. We critically review evidence to date that has been put forth in support of independent evolution of neural cell types in ctenophores. We observe a reluctance in the literature to consider a lost nervous system in sponges and placozoans and suggest that this may be due to historical bias and the commonly misconstrued concept of animal complexity. In support of the idea of loss (or modification beyond recognition), we provide hypothetical scenarios to show how sponges and placozoans may have benefitted from the loss and/or modification of their neural cell types.
最近的系统发育基因组学证据表明，栉水母可能是其他所有动物的姐妹类群。这种系统发育排列开启了一种可能性，即海绵动物和扁盘动物可能已经失去了神经细胞类型，或者栉水母的神经系统是独立进化的。我们批判性地回顾了迄今为止为支持栉水母神经细胞类型独立进化而提出的证据。我们注意到文献中不愿考虑海绵动物和扁盘动物失去神经系统的情况，并认为这可能是由于历史偏见以及对动物复杂性的普遍误解。为了支持失去（或改变到无法识别）的观点，我们提供了一些假设情景，以展示海绵动物和扁盘动物如何可能从其神经细胞类型的丧失和/或改变中受益。
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