A TAXONOMY OF THE MARINE CALANOID COPEPOD GENUS PSEUDOCALANUS
A TAXONOMY OF THE MARINE CALANOID COPEPOD GENUS PSEUDOCALANUS
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DOI：
10.1139/z89-077
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发表时间：
1989-03-01
影响因子：
1.4
通讯作者：
FROST, BW
中科院分区：
文献类型：
--
作者：
FROST, BW
种间形态分化的缺乏和潜在的隐种共生一直困扰着海洋浮游桡足类的科学研究。基于在该属的地理范围内收集到的材料，对pseudoalanus进行了分类分析，确定了先前描述的物种的身份，并为三个以前未被认识的物种的存在提供了证据。正如这里提出的，这个属现在包含了7种。结果表明，在形态、分生和形态特征上的种间分化异常微弱。然而，从7个物种中获得的6个生物化学证据（在其他地方提出）支持本文提出的分类。在该属的地理分布范围内，大多数地方都发现了至少2种的伪天牛；在白令海东部和北冰洋沿岸，三种物种的共存是常见的，四种物种的活动范围重叠。[讨论的分类群包括P. minutus， P. elongatus， P. acuspes， P. major， P. moultoni sp. nov， P. newmani sp. nov和P. mimus sp. nov]。
Apparent lack of interspecific morphological differentiation and potential co-occurrence of cryptic species have plagued the scientific study of marine planktonic copepods of the genus Pseudocalanus. This taxonomic analysis of Pseudocalanus, based on material collected throughout the geographical range of the genus, establishes the identities of the previously described species and provides evidence for the existence of three previously unrecognized species. As proposed here, the genus now contains seven species. It is confirmed that interspecific divergence in morphological, meristic, and morphometrical features is unusually weak in Pseudocalanus. Nevertheless, biochemical evidence (presented elsewhere), obtained for six of the seven species, supports the taxonomy proposed here. At least two species of Pseudocalanus were found at most localities within the geographical range of the genus; co-occurrences of three species were common, and the ranges of four species overlap in the eastern Bering Sea and coastal Arctic Ocean. [Taxa discussed include P. minutus, P. elongatus, P. acuspes, P. major, P. moultoni sp. nov., P. newmani sp. nov., and P. mimus sp. nov.].