An Integrative Approach for Identifying <i>Quinquelaophonte</i> (Harpacticoida, Laophontidae) Species from Korea with the Description of a New Species
<i>Quinquelaophonte</i> is a genus of laophontid harpacticoid, including 13 valid species around the world. Many of them are known to possess inter- and/or intra-individual variations in their swimming legs. During a survey of the meiofaunal biodiversity of Jeju Island in Korea, specimen...
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MDPI AG
2023-11-01
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| Online Access: | https://www.mdpi.com/1424-2818/15/12/1168 |
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| author | Jaehyun Kim Wonchoel Lee |
| author_facet | Jaehyun Kim Wonchoel Lee |
| author_sort | Jaehyun Kim |
| collection | DOAJ |
| description | <i>Quinquelaophonte</i> is a genus of laophontid harpacticoid, including 13 valid species around the world. Many of them are known to possess inter- and/or intra-individual variations in their swimming legs. During a survey of the meiofaunal biodiversity of Jeju Island in Korea, specimens of <i>Quinquelaophonte</i> were collected from an intertidal zone off the west coast of Jeju Island. This study examined the morphological characteristics and amplified partial sequence of four genes (18S rRNA, 28S rRNA, COX1, and CYTB). As with other <i>Quinquelaophonte</i> species, specimens of this new species showed variability in the chaetotaxy of their swimming legs in both sexes. There was a setal arrangement pattern in females that could be considered a standard, whereas male individuals showed two sets of the chaetotaxy on the fourth swimming legs. The molecular data confirmed that individuals belonged to a single species, regardless of morphological variations. The result of the morphological comparison showed that the new <i>Quinquelaohponte</i> species shared some characteristics with congeneric species but included some specific morphological characters different from its congeners. The new species was named <i>Quinquelaophonte sominer</i> sp. nov. and was presented with detailed descriptions, illustrations, and confocal micrographs. Furthermore, phylogenetic analyses were conducted using newly obtained data plus the sequences of other copepods and two <i>Quinquelaophonte</i> species. The result suggested that <i>Q. sominer</i> sp. nov. and two congeners were classified as branched lineages. This discovery brings the total number of species to three in the Northwest Pacific region. |
| first_indexed | 2024-03-08T20:51:11Z |
| format | Article |
| id | doaj.art-e1d80653edf54045a72d44415f50feec |
| institution | Directory Open Access Journal |
| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-08T20:51:11Z |
| publishDate | 2023-11-01 |
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| series | Diversity |
| spelling | doaj.art-e1d80653edf54045a72d44415f50feec2023-12-22T14:03:42ZengMDPI AGDiversity1424-28182023-11-011512116810.3390/d15121168An Integrative Approach for Identifying <i>Quinquelaophonte</i> (Harpacticoida, Laophontidae) Species from Korea with the Description of a New SpeciesJaehyun Kim0Wonchoel Lee1Department of Life Science, Hanyang University, Seoul 04763, Republic of KoreaDepartment of Life Science, Hanyang University, Seoul 04763, Republic of Korea<i>Quinquelaophonte</i> is a genus of laophontid harpacticoid, including 13 valid species around the world. Many of them are known to possess inter- and/or intra-individual variations in their swimming legs. During a survey of the meiofaunal biodiversity of Jeju Island in Korea, specimens of <i>Quinquelaophonte</i> were collected from an intertidal zone off the west coast of Jeju Island. This study examined the morphological characteristics and amplified partial sequence of four genes (18S rRNA, 28S rRNA, COX1, and CYTB). As with other <i>Quinquelaophonte</i> species, specimens of this new species showed variability in the chaetotaxy of their swimming legs in both sexes. There was a setal arrangement pattern in females that could be considered a standard, whereas male individuals showed two sets of the chaetotaxy on the fourth swimming legs. The molecular data confirmed that individuals belonged to a single species, regardless of morphological variations. The result of the morphological comparison showed that the new <i>Quinquelaohponte</i> species shared some characteristics with congeneric species but included some specific morphological characters different from its congeners. The new species was named <i>Quinquelaophonte sominer</i> sp. nov. and was presented with detailed descriptions, illustrations, and confocal micrographs. Furthermore, phylogenetic analyses were conducted using newly obtained data plus the sequences of other copepods and two <i>Quinquelaophonte</i> species. The result suggested that <i>Q. sominer</i> sp. nov. and two congeners were classified as branched lineages. This discovery brings the total number of species to three in the Northwest Pacific region.https://www.mdpi.com/1424-2818/15/12/1168meiofaunabiodiversityvariabilityDNA barcodingphylogeny |
| spellingShingle | Jaehyun Kim Wonchoel Lee An Integrative Approach for Identifying <i>Quinquelaophonte</i> (Harpacticoida, Laophontidae) Species from Korea with the Description of a New Species Diversity meiofauna biodiversity variability DNA barcoding phylogeny |
| title | An Integrative Approach for Identifying <i>Quinquelaophonte</i> (Harpacticoida, Laophontidae) Species from Korea with the Description of a New Species |
| title_full | An Integrative Approach for Identifying <i>Quinquelaophonte</i> (Harpacticoida, Laophontidae) Species from Korea with the Description of a New Species |
| title_fullStr | An Integrative Approach for Identifying <i>Quinquelaophonte</i> (Harpacticoida, Laophontidae) Species from Korea with the Description of a New Species |
| title_full_unstemmed | An Integrative Approach for Identifying <i>Quinquelaophonte</i> (Harpacticoida, Laophontidae) Species from Korea with the Description of a New Species |
| title_short | An Integrative Approach for Identifying <i>Quinquelaophonte</i> (Harpacticoida, Laophontidae) Species from Korea with the Description of a New Species |
| title_sort | integrative approach for identifying i quinquelaophonte i harpacticoida laophontidae species from korea with the description of a new species |
| topic | meiofauna biodiversity variability DNA barcoding phylogeny |
| url | https://www.mdpi.com/1424-2818/15/12/1168 |
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