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Updated: Aug 15, 2026

Helminth Collection and Identification from Wildlife
Published on: December 14, 2013
New records of three vent-endemic scale worms (Annelida, Polynoidae) from the northern Central Indian Ridge fill
Won-Kyung Lee1, Se-Joo Kim1,2
1Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea Metabolic Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology Daejeon Republic of Korea.
Abstract:
The tribe Lepidonotopodini (Polychaeta, Polynoidae) consists of 61 species in 12 genera. Species in this tribe lack eyes and lateral antennae and exhibit pronounced sexual dimorphism; some have external branchiae. Here, we report new records of three species of Lepidonotopodini-Cladopolynoe jiaolongae, Photinopolynoe kaireiensis, and Themis longqiensis-from hydrothermal vents on the northern Central Indian Ridge (nCIR) based on morphological characteristics and COI barcodes. Morphological characters missing in the original description papers are also provided here to complement and refine these species' diagnoses. The COI barcodes of all three species showed low intraspecific divergence (0.00-1.55%), substantially lower than interspecific divergence within the genus (7.77-24.47%). These findings expand the known distribution ranges and clarify the species boundaries of these taxa in nCIR vent fields. Consequently, this study contributes to a better understanding of regional biodiversity and helps establish biological baselines for environmental management within the contract areas.
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