Ancorabolus chironi sp. nov., the first record of a member of the Ancorabolus-group (Copepoda: Harpacticoida: Ancorabolidae) from the Mediterranean
Ancorabolus chironi sp. nov., the first record of a member of the Ancorabolus-group (Copepoda: Harpacticoida: Ancorabolidae) from the Mediterranean
复制标题
甲鱼
作者：
M. Schulz;K. George
2006年12月，METEOR号M 71/1号考察船在Anaximenes海山（地中海东部）进行多芯取样，获得了几个Ancorabolidae Sars，1909新种的标本。该新种属于Ancorabolus Norman分类群，由于以下无形态特征：（1）头胸感觉器组I的突起更多地产生和多刺;（2）头胸感觉器组II：感觉器b-c和后管孔产生于单个刺状突起;前管孔突起;（3）头胸感觉器组IV：（4）P_3 enp-2内毛缺失，（5）P_4雌性enp-2内毛缺失，（6）P_4雌性enp-2内毛缺失，（7）P_4雌性enp-2内毛缺失，（8）P_4雌性enp-2内毛缺失，（9）P_4雌性enp-2内毛缺失。（6）P_4 enp-2外基性二型（雌性刚毛状，雄性刺状）。然而，它不同于其余的物种在整体形状，游泳腿的平行和存在的前突头盾。这证明了一个新物种，Ancorabolus chironi sp. nov.的成立。该记录构成了地中海Ancorabolus组成员的第一个发现。提供了一个Ancorabolus种的诊断检索表。
Multicorer sampling at Anaximenes Seamount (eastern Mediterranean) during RV METEOR cruise M 71/1 in December 2006 yielded several specimens of a new species of Ancorabolidae Sars, 1909. The new species belongs to the taxon Ancorabolus Norman, due to the following apomorphies: (1) process bearing cephalothoracic sensillar group I more produced and spinous; (2) cephalothoracic sensillar group II: sensilla b–c and posterior tube-pore arising from individual thorn-like processes; anterior tube-pore raised; (3) cephalothoracic sensillar group IV: constriction and allometric growth resulting in distad displacement of sensilla a and d; (4) P3 enp-2 inner seta absent; (5) P4 female enp-2 inner seta absent; (6) P4 enp-2 outer element sexually dimorphic (setiform in female, spiniform in male). It differs, however, from the remaining species in overall shape, ornamentation of natatory legs and presence of anterior processes on cephalic shield. This justifies the erection of a new species, Ancorabolus chironi sp. nov. The record constitutes the first finding for members of the Ancorabolus group in the Mediterranean. A diagnostic key to the Ancorabolus species is provided.