Adelieledone, a new genus of octopodid from the Southern Ocean
Adelieledone, a new genus of octopodid from the Southern Ocean
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DOI：
10.1017/s0954102003001512
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发表时间：
2003-12-01
影响因子：
1.6
通讯作者：
Thorpe, JP
中科院分区：
文献类型：
--
作者：
Allcock, AL;Hochberg, FG;Thorpe, JP
对南大洋特有的多态章鱼（Pareledone polymorpha, Robson, 1930）的模式进行了重新检查，并给出了测量、计数和指数。罗布森所描述的两种形式，即长形和亲和，被确定为没有分类学上的有效性。该物种的形态与Pareledone adelieana （Berry, 1917）相似，但在相对臂长、吸盘数量、外部颜色和成熟时的大小上不同。这两个种都被转移到新属Adelieledone，它从Pareledone s.s属中分离出来，是由于舌舌沟的横脊，下喙尖尖，增大的后唾液腺，没有花柱和皮肤雕刻，特别是在背地幔上有两个纵向的被膜脊。一新种，Adelieledone piatkowski，描述自南极半岛。在捕食者研究中，喙部形态可以区分属。
The syntypes of the endemic Southern Ocean octopodid Pareledone polymorpha (Robson, 1930) were re-examined and measurements, counts and indices are presented. The two forms described by Robson, namely oblonga and affinis, are determined to have no taxonomic validity. The species polymorpha shows morphological similarities with Pareledone adelieana (Berry, 1917) but differs in relative arm lengths, sucker counts, external colouration and size at maturity. Both species are transferred to the new genus Adelieledone, which is separated from the genus Pareledone s.s. by the transverse ridges in the ligula groove of the hectocotylus, the sharp tip of the lower beak, the enlarged posterior salivary glands, the absence of stylets and by skin sculpture, especially by the presence of two longitudinal integumentary ridges on the dorsal mantle. A new species, Adelieledone piatkowski, is described from the Antarctic Peninsula. Beak morphology can discriminate the genera in predator studies.