Can Aurelia (Cnidaria, Scyphozoa) species be differentiated by comparing their scyphistomae and ephyrae?
Can Aurelia (Cnidaria, Scyphozoa) species be differentiated by comparing their scyphistomae and ephyrae?
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DOI：
10.5852/ejt.2014.107
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发表时间：
2014-12
影响因子：
1.2
通讯作者：
M. Gambill;G. Jarms
中科院分区：
文献类型：
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作者：
M. Gambill;G. Jarms
关于月亮水母（奥雷利亚属）的物种数量存在争议，它是世界各地沿海陆架海洋浮游生物群落的常见成员。三种奥雷利亚同系物（A. aurita，A. labiata和A. limbata）目前被认为是存在的，但最近的遗传分析表明，这是一个过于简单化。分析了已知种的17个、7个和6个不同来源居群的奥雷利亚同源种的钵形口的形态特征、叶状体的形态特征和横裂过程的时间跨度差异。17个群体中的钵形虫的形态特征相似，但在所检查的6个病例中，钵形虫的形态特征，如舌片的形状和形式，是有效的鉴别因素。我们建议根据以下方面的差异来识别物种：1）海鞘和海鞘（不仅是水母）的形态特征，2）个体的遗传学，3）种群的地理分布。这项研究增加了对scyphozoan scyphistomae和ephyphia的知识，scyphozoans的后生生命周期的阶段，与水母相比，得到的研究相对较少。
Debate exists regarding the number of species of the moon jellyfish (genus Aurelia ), a common member of the planktonic community of the coastal shelf seas around the world. Three Aurelia congeners ( A. aurita , A. labiata and A. limbata ) are currently considered to exist but recent genetic analyses suggested that this is an oversimplification. We analyzed the morphological characteristics of scyphistomae, morphological characteristics of ephyrae and differences in the time span of the strobilation process of Aurelia congeners from 17, 7 and 6 different source populations, respectively, of known species. Morphological characteristics of scyphistomae were similar among the 17 populations but those of ephyrae, such as the shape and form of lappets, were effective discriminators in the 6 cases examined. We recommend identifying species based on differences in 1) the morphological characteristics of scyphistomae and ephyrae (and not only medusae), 2) the genetics of individuals, and 3) the geographical occurrence of the population. This study adds to the growing body of knowledge on scyphozoan scyphistomae and ephyrae, stages of the metagenic life cycle of scyphozoans that have received relatively little study compared to medusae.