A new record of a flathead fish (Teleostei: Platycephalidae) from China based on morphological characters and DNA barcoding

作者：Qin Yan; Song Na; Zou Jianwei; Zhang Zhaohui; Cheng Guangping^*; Gao Tianxiang; Zhang Xiumei

来源：Chinese Journal of Oceanology and Limnology, 2013, 31(3): 617-624.

DOI：10.1007/s00343-013-2186-z

• Platycephalus sp 1
• Chinese coastal waters
• new record
• morphological characters
• cytochrome oxidase I subunit (COI)

A new record of Platycephalus sp.1 (sensu Nakabo, 2002) was documented based on morphological characters and DNA barcoding. We collected 174 specimens of the genus Platycephalus from Chinese coastal waters of Dongying, Qingdao, Zhoushan, and Beihai. Samples were identified as Platycephalus sp.1 morphologically. The coloration, meristic traits, and morphometric measurements are consistent with previously published records. In brief, it is an orange-brown flathead fish with dark brown spots scattered on head and body, lateral line scales 83 to 99 with one or two spine-bearing anteriormost pored scale, no yellow blotch on the caudal fin. Cytochrome oxidase I subunit (COI) gene fragments were sequenced for phylogenetic analysis. The mean evolutionary distance within the species Platycephalus sp.1 was 0.1%. Net evolutionary distances between Platycephalus sp.1 and other species of Platycephalus ranged from 10.8% to 19.7%, which is much greater than the threshold for species delimitation. The COI sequence analysis strongly supports the validity of Platyceohalus sp.1 at genetic level.

• 出版日期2013-5
• 单位中国海洋大学; 国家海洋局第一海洋研究所; 广西大学