Pleistocene diversification of the Pomacentrus coelestis species complex (Pisces: Pomacentridae): historical biogeography and species boundaries

被引:16
作者
Sorenson, Laurie [1 ]
Allen, Gerald R. [2 ]
Erdmann, Mark V. [3 ]
Dai, Chang-Feng [4 ]
Liu, Shang-Yin Vanson [1 ]
机构
[1] Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA
[2] Western Australian Museum, Dept Aquat Zool, Perth, WA 6986, Australia
[3] Indonesia Marine Program, Bali, Indonesia
[4] Natl Taiwan Univ, Inst Oceanog, Taipei 10617, Taiwan
关键词
INDO-PACIFIC; GENETIC CONNECTIVITY; EVOLUTIONARY HISTORY; BIODIVERSITY; PATTERNS; COLOR; CHAETODONTIDAE; PHYLOGEOGRAPHY; CLADOGENESIS; ZOOGEOGRAPHY;
D O I
10.1007/s00227-014-2521-8
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Pleistocene eustatic changes in sea level are often invoked to explain genetic divergence among marine organisms. However, molecular phylogenies have revealed relatively few examples of speciation events dating to the Pleistocene. We present a species-level hypothesis of the timing of evolution for the Pomacentrus coelestis species complex (Pomacentridae), based on the nuclear S7 intron and the mitochondrial Cytb gene, and reconstruct ancestral range distributions across the timetree. Ancestral range reconstruction suggests the complex originated in the Coral Triangle and East Indian Ocean, with subsequent range expansion outward from this region. We suggest that land barriers to dispersal (e.g., Indo-Pacific barrier) may be responsible for the divergence between Indian (P. alleni, P. similis, P. caeruleopunctatus, and P. caeruleus) and Pacific (P. micronesicus, P. auriventris, and P. coelestis) species groups, and subsequent isolation by Pleistocene sea-level fluctuations in certain areas of the Coral Triangle (glacial refugia) may play an important role in the diversification of this species complex. Additionally, our analyses show cryptic lineages within P. micronesicus and highlight the need for comprehensive sampling within and among species to reveal recent speciation events.
引用
收藏
页码:2495 / 2507
页数:13
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