Finding of a new freshwater gammarid (Gammarus gageoensis) from South Korea

  • Kim, Min-Seop (Department of Biological Sciences, College of Natural Sciences, Inha University) ;
  • Lee, Kyung-Sook (Department of Life Science, College of Advanced Sciences, Dankook University) ;
  • Min, Gi-Sik (Department of Biological Sciences, College of Natural Sciences, Inha University)
  • Received : 2009.12.02
  • Published : 2010.03.31


Gammarus gageoensis n. sp., a new species of freshwater gammarid, was collected from Gageodo Island, South Korea. This new species is characterized in terms of its morphology by the flagellum of antenna 2 with calceoli, the pereopods 3 and 4 with numerous long curled setae on the posterior margins, the terminal article of the outer ramus in uropod 3, which is longer than the adjacent spines, and the presence of both rami with long simple setae. The morphological characters of the new species that are different to related species are presented in the text. This paper also compares the new species to related species by the partial sequence of the mitochondrial cytochrome c oxidase subunit 1 (CO1) gene. The sequence difference, consisting of a 39-44% difference relative to closely related species, is also large enough to designate this gammarid as a different species from other freshwater gammarid species. This is the first finding of a new species of Korean freshwater gammarid since 1992. Including this new species, a total of 10 species are known to Korea.


Supported by : Korea Research Foundation


  1. Clare EL, Lim BK, Engstrom MD, Eger JL, Hebert PDN. 2007. DNA barcoding of Neotropical bats: species identification and discovery within Guyana. Mol Ecol Notes. 7:184-190.
  2. Cristescu MEA, Hebert PDN. 2005. The "Crustacean Seas"- an evolutionary perspective on the Ponto-Caspian peracarids. Can J Fish Aquat Sci. 62:505-517.
  3. Elsasser SC, Floyd R, Hebert PDN, Schulte-Hostedde AI. 2009. Species identification of North American guinea worms (Nematoda: Dracunculus) with DNA barcoding. Mol Ecol Resour. 9:707-712.
  4. Folmer O, Black M, Hoeh W, Vrijenhoek R. 1994. DNA primers for amplification of mitochondrial cytochrome c oxidase subunit I from diverse metazoan invertebrates. Mol Marine Biol Biotechnol. 3:294-299.
  5. Gomanenko GV, Kamaltynov RM, Kumenkova ZV, Berenos K, Sherbakov DY. 2005. Population structure of the Baikalian amphipod Gmelinoides fasciatus (Stebbing). Russ J Genet. 41:907-912.
  6. Hajibabaei M, Janzen DH, Burns JM, Hallwachs W, Hebert PDN. 2006. DNA barcodes distinguish species of tropical Lepidoptera. Proc Natl Acad Sci USA. 103:968-971.
  7. Hou Z-E. 2002. Systematics of Chinese freshwater Amphipoda [unpublished Ph.D. dissertation]. Graduate University of Chinese Academy of Sciences.
  8. Hou Z-E, Li S-Q. 2002a. Descriptions of two new species of the genus Gammarus (Crustacea: Amphipoda: Gammaridae) from Yunnan, China. Raffles Bull Zool. 50:37-52.
  9. Hou Z-E, Li S-Q. 2002b. A new species of freshwater amphipoda from China (Crustacea: Amphipoda: Gammaridae). Acta Zootaxonomica Sin. 27:456-465.
  10. Hou Z-E, Li S-Q. 2003. Gammarus electrus, a new species of amphipod from Beijing, China (Crustacea, Amphipoda, Gammaridae). Acta Zootaxonomica Sin. 28:241-248.
  11. Hou Z-E, Li S-Q. 2004. Gammarus species from Tibet Plateau, China (Crustacea: Amphipoda: Gammaridae). Raffles Bull Zool. 52:147-170.
  12. Hou Z-E, Li S-Q, Morino H. 2002. Three new species of the genus Gammarus (Crustacea, Amphipoda, Gammaridae) from Yunnan, China. Zool Sci. 19:939-960.
  13. Hou Z-E, Fu J-H, Li S-Q. 2007. A molecular phylogeny of the genus Gammarus (Crustacea: Amphipoda) based on mitochondrial and nuclear gene sequences. Mol Phylogenet Evol. 45:596-611.
  14. Karaman GS. 1984. Remarks to the freshwater Gammarus species (Fam. Gammaridae) from Korea, China, Japan and some adjacent regions (Contribution to the knowledge of the Amphipoda 134). Montenegrin Acad Sci Arts Glasnik Sec Nat Sci. 4:139-162.
  15. Karaman GS, Pinkster S. 1987. Freshwater Gammarus species from Europe, North Africa and adjacent regions of Asia (Crustacea-Amphipoda) part III. Gammarus balcanicus-group and related species. Bijdr Dierk. 57:207-260.
  16. Kim HS, Lee KS. 1977. A systematic study on the amphipods in Korea, II. On the geographical distribution and variation of species of freshwater Gammarus (Crustacea, Amphipoda, Gammaridae). Korean J Zool. 20:29-40.
  17. Lee KS. 1986. Systematic study of Amphipoda (Crustacea) in Korea VI. Gammarus hoonsooi, a new species of freshwater gammarid (Gammaridae) from South Korea. Korean J Zool. 29:165-170.
  18. Lee KS, Kim HS. 1980. On the geographical distribution and variation of freshwater Gammarus in Korea, including descriptions of four new species. Crustaceana Suppl. 6:44-67.
  19. Lee KS, Seo IS. 1990. Two new species of freshwater Gammarus (Crustacea, Amphipoda, Gammaridae) from South Korea. Korean J Syst Zool. 6:219-230.
  20. Lee KS, Seo IS. 1992. One new species of freshwater Gammarus (Crustacea, Amphipoda, Gammaridae) from South Korea. Korean J Syst Zool. 3:93-100.
  21. Lefebure T, Douady CJ, Gouy M, Gibert J. 2006. Relationship between morphological taxonomy and molecular divergence within Crustacea: proposal of a molecular threshold to help species delimitation. Mol Phylogenet Evol. 40:435-447.
  22. Macdonald KS, Yampolsky L, Duffy JE. 2005. Molecular and morphological evolution of the amphipod radiation of Lake Baikal. Mol Phylogenet Evol. 35:323-343.
  23. Meyran JC, Monnerot M, Taberlet P. 1997. Taxonomic status and phylogenetic relationships of some species of the genus Gammarus (Crustacea, Amphipoda) deduced from mitochondrial DNA sequences. Mol Phylogenet Evol. 8:1-10.
  24. Tamura K, Dudley J, Nei M, Kumar S. 2007. MEGA4: Molecular evolutionary genetics analysis (MEGA) software version 4.0. Mol Biol Evol. 24:1596-1599.
  25. Thompson JD, Gibson TJ, Plewniak F, Jeanmougin F, Higgins DG. 1997. The CLUSTAL_X windows interface: flexible strategies for multiple sequence alignment aided by quality analysis tools. Nucleic Acids Res. 25: 4876-4882.
  26. Ueno M. 1940a. Freshwater amphipoda of Manchoukuo. Report of the limnobiological survey of Kwantung and Manchoukuo, Dairen, p. 311-322 (in Japanese).
  27. Ueno M. 1940b. Some freshwater amphipods from Manchoukuo, Corea and Japan. Bull Biogeogr Soc Japan. 10:63-85.
  28. Ueno M. 1966. Results of the speleological survey in South Korea 1966 II. Gammarid amphipoda found in subterranean waters of South Korea. Bull Natl Scie Museum Tokyo. 9:501-535.
  29. Vainola R, Witt JDS, Grabowski M, Bradbury JH, Jazdzewski K, Sket B. 2008. Global diversity of amphipods (Amphipoda; Crustacea) in freshwater. Hydrobiologia. 595:241-255.
  30. Venarsky MP, Anderson FE, Wilhelm FM. 2009. Population genetic study of the US federally listed Illinois cave amphipod, Gammarus acherondytes. Conserv Genet. 10:915-921.
  31. Wang Y, Hou Z-E, Li S-Q. 2009. Description of Gammarus preciosus, a new species of freshwater amphipod from Henan, China (Amphipoda, Gammaridae). Crustaceana. 82:99-109.
  32. Witt JDS, Threloff DL, Hebert PDN. 2006. DNA barcoding reveals extraordinary cryptic diversity in an amphipod genus: implications for desert spring conservation. Mol Ecol. 15:3073-3082.
  33. Zemlak TS, Ward RD, Connell AD, Holmes BH, Hebert PDN. 2009. DNA barcoding reveals overlooked marine fishes. Mol Ecol Resour. 9:237-242.