碩士 / 國立臺灣大學 / 海洋研究所 / 103 / The families Lophiidae, Ogcocephalidae, and Chaunacidae belong to the order Lophiiformes. Most of the species in these three families are deep-sea benthic dwellers. Because few informative morphological characters useful for species delineation and for inferring intra-familiar phylogeny, some taxonomic problems persist. Although the species-group hypotheses within these families have been proposed previously using morphological characters, none of them were tested with other methods. In this study, molecular systematic approach is employed. I infer species phylogeny for the families Lophiidae, Ogcocephalidae, and Chaunacidae from the samples collected in the western Pacific Ocean. Our main objectives are: (1) to evaluate the validity of the species occurring in the western Pacific Ocean of these three families; (2) to revise the species diversity and the distribution pattern of these three families in the western Pacific Ocean; (3) to test the species-group hypotheses previously proposed based on morphology; (4) to test the previous phylogenetic hypotheses of the relationships among these three families and their relationships with other suborders (Antennarioidei and Ceratioidei). From our results, the Lophioidei (Lophiidae) is the basal-most group within the Lophiiformes, and the Chaunacoidei (Chaunacidae) form a sister-group to the Ceratioidei. However, the phylogenetic positions of the other two suborders (Antennarioidei and Ogcocephaloidei) are not confidently resolved. In Lophiidae, four genera from the Lophiidae are monophyletic respectively, but their inter-relationships remain unsolved. Four major lineages in the genus Lophiodes are identified; Lophiodes mutilus is not monophyletic with at least two cryptic species within it. In Chaunacidae, the samples from the genus Chaunax form monophyletic group. The taxonomy status of the species within the Chaunax is further clarified; five potential new species are recognized. In Ogcocephalidae, ten potential new species are recognized, and intergeneric relationships are partially resolved. The genera Coelophrys, Halieutopsis, Malthopsis and Solocisquama do not appear to be monophyletic; Malthopsis mitrigera and Solocisquama erythrina are separated lineages from other Malthopsis and Solocisquama species, and the Coelophrys is nested within the Halieutopsis. In addition, five lineages are found in the Halieutaea; an unpublished species by Dr. Ho, Halieutaea n. sp., forms an additional group to four existing species-groups. Two clades are found in the Halicmetus; however, taxonomic status for the species within the genus awaits for further clarifications.
| Identifer | oai:union.ndltd.org:TW/103NTU05279003 |
| Date | January 2015 |
| Creators | Chung-Sheng Huang, 黃崇盛 |
| Contributors | Wei-Jen Chen, 陳韋仁 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 96 |
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