Determination of Growth and Age of Slow Growing Brittle Stars (Echinodermata: Ophiuroidea) From Natural Growth Bands
Determination of Growth and Age of Slow Growing Brittle Stars (Echinodermata: Ophiuroidea) From Natural Growth Bands
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从自然生长带测定缓慢生长的海蛇尾（棘皮动物：蛇尾总科）的生长和年龄
DOI：
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发表时间：
1998
影响因子：
1.2
通讯作者：
T. Brey
中科院分区：
文献类型：
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作者：
C. Dahm;T. Brey
小骨的生长变化很大，随着小骨标本的大小和年龄的增加，越来越多的脊椎听小骨最内侧的生长环变得过度生长，因此看不见。比较了利用南极高地物种Ophion otus victoriae估算缓慢生长的脆星个体年龄的两种方法。一种方法将自然生长轮读数解释为尺寸增量数据，而第二种方法通过迭代校正方法来补偿生长轮过度生长。讨论了这两种方法的前提条件和优缺点。
Growth in ophiuroids is highly variable, and with increasing size and age of an ophiuroid specimen more and more of the innermost growth rings on the vertebral ossicles become overgrown and hence invisible. Two approaches to estimate individual age of slow growing brittle stars using the high Antarctic species Ophionotus victoriae are compared. One method interprets natural growth ring readings as size-increment data, whereas the second method compensates for growth ring overgrowth by means of an iterative corrective approach. Preconditions as well as advantages and disadvantages of both methods are discussed.