Is the morphological evolution of Microporella correlated with environmental factors?

对采自日本沿海三个受暖流、冷流、暖流影响的小孔藻标本，以及昭和天皇收藏、Doderlein收藏和伦敦自然历史博物馆收藏的小孔藻标本进行了对环境适应性的比较。经过三年的研究，结果表明：(1)小孔藻的形态变异一般与特定物种所处的环境有关。(2)小孔藻的形态是指对环境的适应。(2)因此，(4)上述趋势是在小孔藻属中发现的，但不一定会出现在其他具有长角状下颌的苔藓类群中。(5)即使在一个属或一个物种组中，小孔藻属的下颌骨的功能也可能不同。本研究获得的所有数据都一致地告诉我们，动物附属物的形态，如小孔藻属、卵细胞、额Umbo等与环境条件有关，因此，你必须将它们与注意力进行比较，特别是在为相关的系统发育应用分支分析方面。

Microporella specimens colleted from three Japanese coastal regions influenced by warm, cold, and warm and cold current and those from Showa Emperor Collection, from Doderlein Collection, and from the collection deposited in the Natural History Museum, London were compared in terms of adaptation to environment.Three years research yielded the following results :(1) Morphological variation of avicularia between the species of Microporella generally correlated with the environment in which the particular species live.(2) Morphology of avicularia means adaptation to the environment.(2) Hence, it is ill-suited for phylogenetic implication to analyze the relation between the species of Microporella using the morphological comparison of avicularian mandibles.(4) The tendency described above was discovered in Microporella but is not necessarily expected to be present in other bryozoan groups that have long avicularian mandibles.(5) The function of avicularian mandible may differ between the species even in a genus or a species group.All of the data obtained by the present study consistently tell us that the morphology of zooid accessories, such as avicularia, ovicells, frontal umbo, and so on is correlated with environmental conditions, and so you have to compare them with attention particularly for applying a cladistic analysis for the phylogeny concerned.