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首页> 外文期刊>Marine biology >Field identification of 'types' A and B of the ascidian Ciona intestinalis in a region of sympatry
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Field identification of 'types' A and B of the ascidian Ciona intestinalis in a region of sympatry

机译：在交感神经区域对海鞘Ciona intestinalis的“类型” A和B进行现场鉴定

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摘要

The ascidian species Ciona intestinalis is a major model chordate in developmental and evolutionary biology, and an important fouling organism and invasive species. However, genomic investigation has recently revealed the existence of two cryptic species, genetically distinct yet without obvious morphological differences, currently referred to as types A and B. Here, we show that they are externally distinctive in a zone of sympatry in the western English Channel. Examining genotyped specimens, we found that types A and B of C. intestinalis can generally be distinguished by body colour, pigmentation at the distal end of the siphons and the presence or absence of tubercles on the sides of the siphons. Detecting specimens of hybrid descent still requires detailed molecular analysis, but these visual characters in combination will identify living specimens of types A and B with high probability. These differences are shown to be inherited.
机译：海鞘物种Ciona intestinalis是发育和进化生物学中的主要模型r虫，并且是重要的结垢生物和入侵物种。但是，基因组研究最近发现存在两种隐性物种，它们在遗传上彼此独立，但没有明显的形态学差异，目前称为A型和B型。在这里，我们证明了它们在西英吉利海峡的一个共生带中在外部具有独特性。检查基因型标本，我们发现肠球菌的A型和B型通常可以通过体色，虹吸管远端的色素沉着以及虹吸管侧面是否有结节来区分。检测杂交血统的标本仍然需要详细的分子分析，但是这些视觉特征结合在一起将很有可能识别出A型和B型活体标本。这些差异表明是继承的。

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  • 来源
    《Marine biology》 |2012年第7期|1611-1619|共9页
  • 作者

    Atsuko Sato; Nori Satoh; John D. D. Bishop;

  • 作者单位

    Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK,Marine Genomics Unit, Okinawa Institute of Science and Technology, 1919-1, Tancha, Onna-Son, Kunigami, Okinawa 904-0412, Japan,The Laboratory, Marine Biological Association of the UK, Citadel Hill, Plymouth PL1 2PB, UK;

    Marine Genomics Unit, Okinawa Institute of Science and Technology, 1919-1, Tancha, Onna-Son, Kunigami, Okinawa 904-0412, Japan;

    The Laboratory, Marine Biological Association of the UK, Citadel Hill, Plymouth PL1 2PB, UK;

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