The Systematics and Molecular Phylogeny of Family Callionymidae from Taiwan

• Main Authors: Chen-Yun Lee, 李承運
• Other Authors: Kwang-Tsao Shao
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/75761709745057410113

碩士 === 國立臺灣海洋大學 === 海洋生物研究所 === 100 === Dragonets (Callionymidae) are benthic fishes living mostly in sandy or muddy bottom. There are 182 species belonged to 10 genera worldwide. Previously the phylogenies based on morphology were reviewed by Nakabo (1982, 1983a b) and Fricke (1983, 1986), but there are still some differences on genera and species classification needed to be resolved. The aims of this study were to review dragonets in Taiwan and using both mitochondrial and nuclear genes to test generic relationship of 17 genera of callionymid. In this study, we identified 11 genera and 26 species of dragonets in Taiwan. Among them, Minysynchiropus laddi is the Taiwanese new recorded species and an undescribed species Foetorepus sp. was also recorded. Shen and Wu (2011) listed 10 genera and 37 species, but it only described the morphological characters of each species and there are 16 species without specimen records which were tentatively excluded in the present study. Molecular phylogenetic analysis of data from both mitochondrial and nuclear genes supported the genus classification system proposed by Nakabo (1982). However, the topology didn’t support the hypothesis on the phylogeny base on the morphological characters of jaw protrusion and urohyal. Combining the molecular phylogeny with fossil evidences and morphological characters, I suggest that the origin of dragonets was from Tethys sea. The dragonets then separated into two groups one tended to live in deep sea and another in shallow habitat. The latter group splited into two lines (1) associated with rocky or coral reef; and (2) muddy or sandy bottom.