Development of an interactive identification key for Oncaeidae (Copepoda: Cyclopoida)
Development of an interactive identification key for Oncaeidae (Copepoda: Cyclopoida)
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DOI：
10.1080/00222933.2015.1022614
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发表时间：
2015-10-12
影响因子：
0.8
通讯作者：
Schnack, Dietrich
中科院分区：
文献类型：
--
作者：
Boettger-Schnack, Ruth;Schnack, Dietrich
介绍了海洋浮游微型桡足类Oncaeidae科雌性交互式电子识别钥匙的发展现状。迄今为止，已描述了112种，分属于7个属（Archioncaea，Conaea，Epicalymma，Monothula，Oncaeas.str.，Spinoncaea和Triconia）和16个种组内的speciose paraphyletic taxon Oncaea s.l.只有两种Oncaea s.l.显示不确定的群体状态。在所有描述的oncaeids中，有7个种由于形态描述不充分和/或缺乏重新检查的模式材料而未被列入检索表。此外，七个形态上不同的物种和两个新种组被认为尚未正式描述。该检索表尽可能使用易于区分的形态特征（例如，体型、尾体节的比例长度、P5外足动物的长度），并在需要明确识别的情况下包括更困难的特征（例如，游泳腿上的脊柱计数、比例脊柱长度）。检索表中使用的字符允许具有有限分类学经验的研究人员识别属和种组;在大多数情况下，物种分离需要一些先进的解剖技能。潜在的识别问题所造成的困难识别分钟的形态特征或种内形态变异进行了讨论。目前版本的识别检索表仍然需要补充说明特征状态，并包括概述每个物种特征的概况介绍，以及分类不确定性的注释和提供动物地理和遗传信息的数据库链接。
The current state of development of an interactive electronic identification key for females of the marine pelagic microcopepod family Oncaeidae is presented. To date, 112 species have been described, allocated to seven genera (Archioncaea, Conaea, Epicalymma, Monothula, Oncaeas.str., Spinoncaea, and Triconia) and 16 species groups within the speciose paraphyletic taxon Oncaea s.l. Only two species of Oncaea s.l. show an uncertain group status. Of all described oncaeids, seven species are not yet included in the key due to inadequacies in morphological description and/or lack of type material for re-examination. In addition, seven morphologically distinct species and two new species groups are considered that have not yet been formally described. The key uses easily distinguishable morphological characters as far as possible (e.g. body size, proportional lengths of urosomites, length of P5 exopod) and includes more difficult characters (e.g. spine counts on swimming legs, proportional spine lengths) where required for unequivocal identification. The characters used in the key allow the identification of genera and species groups by investigators with limited taxonomic experience; species separation in most cases requires some advanced dissection skills. Potential identification problems caused by difficulties discerning minute morphological features or intraspecific morphometric variability are discussed. The present version of the identification key still requires complementary illustrations of character states and inclusion of fact sheets summarizing the characteristics of each species with notes on taxonomic uncertainties and links to databases providing zoogeographical and genetic information.