Skeletal variation related to arm regeneration in Metacrinus and Saracrinus, Recent stalked crinoids
Skeletal variation related to arm regeneration in Metacrinus and Saracrinus, Recent stalked crinoids
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与 Metacrinus 和 Saracrinus、最近有茎海百合的手臂再生相关的骨骼变异
DOI：
10.1111/j.1502-3931.1986.tb00752.x
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发表时间：
1986
期刊：
影响因子：
1.5
通讯作者：
T. Oji
中科院分区：
文献类型：
--
作者：
T. Oji
比较了 Metacrinus rotundus Carpenter 和 Saracrinus nobilis (Carpenter) 的手臂近端部分（原臂）骨骼元素数量的变化。较老的 Metacrinus rotundus 标本显示出元素数量的变化增加，并有减少的趋势，而 Saracrinus nobilis 的元素数量几乎保持不变。 Metacrinus rotundus 的变异归因于自切后手臂再生不准确。因此，根据骨骼元素的数量将 Saracrinus 与 Metacrinus 分开是可能的，但在应用可能受再生影响的分类学特征时必须小心。
Variations in the number of skeletal elements in the proximal portion of the arms (primibrachials) of Metacrinus rotundus Carpenter and Saracrinus nobilis (Carpenter) are compared. Older specimens of Metacrinus rotundus show increased variation in number of elements along with a tendency toward reduction, whereas the number of elements remains nearly constant in Saracrinus nobilis. The variation in Metacrinus rotundus is attributed to inaccurate arm regeneration following autotomy. Separation of Saracrinus from Metacrinus on the basis of number of skeletal elements is therefore possible, but caution must be used in the application of taxonomic characters which might be influenced by regeneration.