Developmental Patterns and Hypotheses of Homology in the Antennules of Thecostracan Nauplius Larvae (Crustacea)
Developmental Patterns and Hypotheses of Homology in the Antennules of Thecostracan Nauplius Larvae (Crustacea)
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壳纲无节幼虫（甲壳纲）触角的发育模式和同源假说
DOI：
10.1111/j.1463-6395.1994.tb01210.x
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发表时间：
1994
期刊：
影响因子：
1.2
通讯作者：
M. Grygier
中科院分区：
文献类型：
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作者：
M. Grygier
总结了非育雏无节幼体的Ascothoracida（家庭劳科和Petrarpediae）和选定的无节幼体的Facetotecta。在Cirripedia Thoracica，无节幼体的Lepadomorpha和Scalpellomorpha/Sessilia显示出不同的触角刚毛添加和划分到文章的模式，并确定了一个或两个可能的apomorphies为每组。几个变化的scalpellomorphan/sessillian模式进行了概述。这些数据的Ascothoracida，Facetotecta，和Cirripedia提供的基础上修改早期的建议之间的结构同源thecostracan maxillopodans的无节幼体触角。“虚拟”的文章（从来没有完全免费的）被调用占刚毛“跳”跨文章边界在蜕皮和假定同源刚毛发现相邻的文章在不同的类群。蔓足亚目中轴前刚毛的身份是模糊的，迫使我们考虑该类群和中甲纲触角鲍普兰的两种模型;后者可能包含多达11或12篇文章，比之前假设的8或9篇文章还要多。在较早的分支研究中使用的thecostracan和其他颚足类类群的字符的评分没有受到严重影响。与寒武纪颚足类Bredocarsgests的比较表明，在现存的介形类中，触角分裂成离散的文章是一种近形状态，而在颚足类触角中曾经存在一个以上的顶端文章。
Antennular development is summarized for non–brooded nauplius larvae of the Ascothoracida (families Lauridae and Petrarcidae) and for selected nauplii of the Facetotecta. In the Cirripedia Thoracica, nauplii of the Lepadomorpha and Scalpellomorpha/Sessilia are shown to differ in their patterns of antennular setal addition and division into articles, and one or two possible apomorphies for each group are identified. Several variations of the scalpellomorphan/sessilian pattern are outlined. These data on the Ascothoracida, Facetotecta, and Cirripedia provide the basis for modifying an earlier proposal of structural homologies among the naupliar antennules of thecostracan maxillopodans. ‘Virtual’ articles (ones that are never completely free) are invoked to account for setae that ‘jump’ across article boundaries at molts and for supposedly homologous setae found on adjacent articles in different taxa. The identities of the preaxial setae in the Cirripedia are ambiguous and force consideration of two models for that group and for the thecostracan antennular Bauplan; the latter may have included up to 11 or 12 articles, more than the previously supposed 8 or 9. The scoring of characters used in an earlier cladistic study of thecostracan and other maxillopodan taxa is not seriously affected. A comparison with the Cambrian maxillopodan Bredocarissuggests that division of the antennule into discrete articles in extant thecostracans is an apomorphic state and that yet one more apical article once existed in the maxillopodan antennule.
Ito, T.：“来自日本田边湾的 Hansenocaris（甲壳纲：Facetotecta）新种。”
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