White William T, Weigmann Simon
CSIRO Marine and Atmospheric Research, Wealth from Oceans Flagship, GPO Box 1538, Hobart, Tasmania, 7001, Australia; Email:
University of Hamburg, Biocenter Grindel and Zoological Museum, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany; Email: unknown.
Zootaxa. 2014 Jun 19;3821(1):71-87. doi: 10.11646/zootaxa.3821.1.5.
A new species of whaler shark, Carcharhinus humani sp. nov., is described based on five type specimens from the western Indian Ocean near the Socotra Islands, off Kuwait, Mozambique, and South Africa. The new species represents the fifth species of the C. dussumieri/sealei group and the third species of the C. sealei subgroup. The new species is the only species of the C. sealei subgroup known from the western Indian Ocean. Within the C. sealei subgroup, C. humani differs from C. sealei in having a sharply demarcated black apical marking on the second dorsal fin which does not extend onto body surface (vs. black marking diffuse-edged and usually extending onto upper sides of trunk), a longer horizontal prenarial length (4.1-4.7 vs. 3.4-4.2% TL), and a longer preoral length (6.8-7.6 vs. 5.7-6.5% TL); C. humani differs from C. coatesi in having a taller second dorsal fin (its height 4.0-4.5 vs. 2.9-3.6% TL), a shorter first dorsal fin (its length 13.4-14.6 vs. 14.8-17.3% TL), and more vertebrae (total centra 152-167 vs. 134-147).
一种新的真鲨属鲨鱼，即人类真鲨（Carcharhinus humani sp. nov.），依据来自索科特拉群岛附近的西印度洋、科威特沿海、莫桑比克和南非的5个模式标本进行描述。该新物种是杜氏真鲨/西氏真鲨种群的第五个物种，也是西氏真鲨亚种群的第三个物种。新物种是西印度洋已知的西氏真鲨亚种群的唯一物种。在西氏真鲨亚种群中，人类真鲨与西氏真鲨的区别在于第二背鳍上有明显界限的黑色顶端斑纹，且不延伸至身体表面（相比之下，西氏真鲨的黑色斑纹边缘模糊，通常延伸至躯干上侧），鼻前水平长度更长（分别为全长的4.1 - 4.7%和3.4 - 4.2%），以及口前长度更长（分别为全长的6.8 - 7.6%和5.7 - 6.5%）；人类真鲨与科氏真鲨的区别在于第二背鳍更高（其高度为全长的4.0 - 4.5%，而科氏真鲨为2.9 - 3.6%），第一背鳍更短（其长度为全长的13.4 - 14.6%，而科氏真鲨为14.8 - 17.3%），以及脊椎骨更多（总椎体数为152 - 167，而科氏真鲨为134 - 147）。
