HYDROPHOBIC LARVAL SHELLS: ANOTHER CHARACTER FOR HIGHER LEVEL SYSTEMATICS OF GASTROPODS
HYDROPHOBIC LARVAL SHELLS: ANOTHER CHARACTER FOR HIGHER LEVEL SYSTEMATICS OF GASTROPODS
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疏水性幼虫壳：腹足动物高级系统学的另一个特征
DOI：
10.1093/mollus/63.3.425
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发表时间：
1997
影响因子：
1.2
通讯作者：
R. Collin
中科院分区：
文献类型：
--
作者：
R. Collin
腹足纲内部的高级关系很难确定，部分原因是缺乏已识别的共形特征。幼虫壳的疏水性可能是腹足动物科系统学的一个有用的附加特征。对 57 个物种的调查表明，幼虫壳的疏水性在锥体动物、后鳃动物和海洋肺动物中很常见或普遍存在，但在髌足动物、植物腹足动物和蜥腹足动物中却是未知的。疏水性幼虫壳的分类分布与它是异分支共谱的假设是一致的。不幸的是，关键的“低级”异分支（例如architectonicids和valvatoids）的状况尚不清楚。
Higher level relationships within the Gastropoda are difficult to determine, in part due to the paucity of identified synapomorphic characters. Larval shell hydrophobicity may be a useful additional character for gastropod family systematics. A survey of 57 species indicates that larval shell hydrophobicity is common or ubiquitous in pyramidellids , opisthobranchs, and marine pulmonates but is unknown in patellogastropods, vetigastropods, and caenogastropods. The taxonomic distribution of hydrophobic larval shells is consistent with the hypothesis that it is a heterobranch synapomorphy. Unfortunately the condition in key 'lower' heterobranchs such as architectonicids and valvatoids is unknown.