A new species of Pomacentrus ( Actinopterygii: Pomacentridae) from Micronesia, with comments on its phylogenetic relationships

作者：Liu Shang Yin Vanson^*; Ho Hsuan Ching Hans; Dai Chang Feng

来源：Zoological Studies, 2013, 52(1): 6.

DOI：10.1186/1810-522X-52-6

• Cryptic species
• Pomacentrus micronesicus
• Speciation

Background: Many widely distributed coral reef fishes exhibit cryptic lineages across their distribution. Previous study revealed a cryptic lineage of Pomacentrus coelestis mainly distributed in the area of Micronesia. Herein, we attempted to use molecular and morphological approaches to descript a new species of Pomacentrus.
Results: The morphological comparisons have been conducted between cryptic species and P. coelestis. Pomacentrus micronesicus sp. nov. is characterized by 13 to 16 ( typically 15) anal fin rays ( vs. 13 to 15, typically 14 rays in P. coelestis) and 15 or 16 rakers on the lower limb of the first gill arch ( vs. 13 or 14 rakers in P. coelestis). Divergence in cytochrome oxidase subunit I sequences of 4.3% is also indicative of species-level separation of P. micronesicus and P. coelestis.
Conclusions: P. micronesicus sp. nov. is described from the Marshall Islands, Micronesia on the basis of 21 specimens. Both morphological and genetic evidences support its distinction as a separate species from P. coelestis.

• 出版日期2013-8
• 单位东华大学