期刊
ARTHROPOD STRUCTURE & DEVELOPMENT
卷 43, 期 6, 页码 615-658出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.asd.2014.09.003
关键词
Stenheliinae; Marine benthos; Cladistics; DNA barcoding; Novel characters
类别
资金
- National Institute of Biological Resources (NIBR) - Ministry of Environment of the Republic of Korea (NIBR) [2013-02-001]
- Basic Science Research Programme of the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology of the Republic of Korea [2012R1A1A2005312]
Cuticular organs have not been described systematically in harpacticoids until recently, and they have never been used as characters for reconstructing phylogenetic relationships in any crustacean group. We survey cuticular pores and sensilla on somites in ten Miraciidae species, belonging to six genera, from Korea, Australia, and Russia. Nine species belong to the subfamily Stenheliinae, while the outgroup belongs to the subfamily Diosaccinae. We aim to compare phylogenetic trees reconstructed for these harpactioids based on: 1) cuticular organs (with 76 characters scored, 71% of them phylogenetically informative); 2) traditionally used macro-morphological characters (66 scored, 77% of them informative); and 3) mtCOI DNA data. All analyses suggest that cuticular organs are useful characters for harpacticoid species delineation, although not as sensitive as some fast-evolving molecular markers. Reconstructed cladograms based on all three datasets show very high bootstrap values for clades representing distinct genera, suggesting that cuticular organs are suitable characters for studying phylagenetic relationships. Bootstrap values for the more basal nodes differ among the different cladograms, as do the sister-group relationships they suggest, indicating that cuticular organs probably have different evolutionary constraints from macro-morphological characters. Cuticular organs could be quite useful in the study of old museum specimens and fossil crustaceans. (C) 2014 Elsevier Ltd. All rights reserved.
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