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Two Aquatic Oligochaete Species, Dero dorsalis and Allonais pectinata (Annelida: Clitellata: Naididae), New to Korea
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The genera Dero and Allonais belong to the family Naididae. Most species in the genus Dero have unique morphological characters including a branchial fossa and/or gills at the posterior end of the body. The genus Allonais has no eyes unlike its close relative the genus Nais. Of these genera, one species of Dero, D. obtusa, was recently reported in Korea. However, the genus Allonais has not been recorded in Korea. Here, we report Dero dorsalis Ferronière, 1899 and Allonais pectinata(Stephenson, 1910) with a diagnosis and illustrations.

Dero dorsalis , Allonais pectinata , Naididae , Oligochaeta , Clitellata , Korea

    Aquatic oligochaeta is one of the most abundant and ecologically important groups in freshwater benthic environments (Jung, 2011). Most species in this group are < 1mm to a few centimeters in length. This group contains several families. Among them, naidid worms are small benthic and/or epibenthic oligochaetes with a worldwide distribution. About 180 species of naidid oligochaetes have been described(Erséus, 2005) and 24 genera are currently recognized(Envall et al., 2006).

    The species diversity of this family has been the subject of considerable investigation in China, Japan, and Korea. Fiftyeight and 30 species have been reported in China and Japan, respectively(Timm, 1999; Wang and Cui, 2007). In recent years, 15 naidid species in 11 genera have been added to the Korean aquatic oligochaete fauna (Jung, 2011, 2012; Park, 2013). Of these, one species in the genus Dero, D. obtusa, has been reported, but the genus Allonais has not been recorded. In this study, two naidid species in two genera, Dero and Allonais, are reported new to Korea.

    The specimens were collected with a plankton hand net (mesh size 100μm) from the roots of waterweeds at the edge of streams covered with sand or organic matter. The samples werekept cooland were sorted in the laboratory using a stereomicroscope while the worms were alive. Then, the samples were preserved in 70% ethanol solution. The specimens were stained with Rose Bengal dye for observations and measurements and were temporarily mounted in glycerin. Pictures were taken with a BX41 optical microscope(Olympus,Tokyo, Japan) and an EOS 650D camera(Canon, Tokyo, Japan). The figures are drawn using a microscope equipped with a drawing tube. Measurements were taken using a micrometer on the microscope. These mounted collections are being kept in the lab of Ecology Genetic(LEG), Department of Science Education, Ewha Womans University. Other material, preserved in 70% ethanol solution, was submitted to the National Institute of Biological Resources(NIBR) of the Republic of Korea.


    Order Haplotaxida Family Naididae Ehrenberg, 1828 Genus Dero Oken, 1815

    1*Dero dorsalis Ferronière, 1889 (Figs. 1, 2)

    Xantho decaopada Dutrochet, 1819: 155. Nais decapoda(Dutrochet). Blainville, 1825: 131. Uronais decapoda(Dutrochet). Gervais, 1838: 18. Dero decapoda(Dutrochet). Vaillant, 1890: 386. Dero darsale Ferronière, 1899: 255. Dero tubicola Pointner, 1911: 274, Pl. XXVIII, figs. 4, 5; Schuster, 1915: 18, figs. 10-14; Malevich, 1929: 47; Ude, 1929: 36, fig. 41. Dero austrina Stephenson, 1925: 882, Pl. I, fig. 1; Aiyer, 1929: 34, figs. 10, 11; Stephenson, 1931: 269; Michaelsen, 1933: 334; Chen, 1940: 57, figs. 18, 19. Dero dorsalis Ferronière, Michaelsen, 1933: 334; Sperber, 1948: 162; 1950: 70, figs. 22, 23a; Cekanovskaya, 1962: 171, fig. 90; Naidu, 1962: 529, fig. 12a-h.

    Material examined. All specimens were collected from Geumchoncheon stream, Geumchon-dong, Paju-si, Gyeonggi-do, Korea, 37˚ 76′64.69′′N, 126˚ 77′42.50′′E, 16 Jun, 2013 (collector: Jung J). KN 1306161, KM1306162, KM1306163, and KM1306164: mature, mounted on slides, deposited at LEG. KOSPIV0000181419, KOSPGR0000258786, and KO SPIV0000181431: mature, preserved in 70% ethanol solution, mature specimen, deposited at NIBR.

    Diagnosis. Length 1.04-2.76mm, width at XI 0.11-0.25mm, number of segments 16-85. Small worms red in color. No eye present. Dorsal chaetae starting from IV, one hair and one needle; needle chaeta with split end; length of hair chaeta about three times longer than needle chaeta (Fig. 1A). Ventral chaetae of anterior segments, bifid, arranged in two rows of 4-5 chaetae per bundle, 35.68-36.37 μm long, 0.72-1.47 μm wide, with distal nodulus and longer upper tooth (Fig.1B). Ventral chaetae of posterior segments with proximal bend. Branchial fossa with two diverging processes from the postero-lateral border(Figs. 1C, 2). Five pairs of gills; two postero-ventral foliate, one lateral foliate, and 2 antero-dorsal foliates(Fig. 1C).

    Distribution. Europe, South Asia, and East Asia.

    Remarks. Dero dorsalis has two diagnostic features (Brinkhurst and Jamieson, 1971). It has dorsal chaeta starting from IV and five pairs of gill at the posterior end of the body. The specimens we examined clearly presented both diagnostic characteristics of D. dorsalis. In addition, the specimens in this study were almost similar to those of previous studies (e.g., Ohtaka and Nishino, 2006) in the shapes of dorsal and ventral chaetae, nodules, branchial fossa, and gills. This is the first record of this species from Korea.

      >  1*Genus Allonais Sperber, 1948

    2*Allonais pectinata(Stephenson, 1910) (Fig. 3)

    Nais pectinata Stephenson, 1910: 236, Pl. XI, fig. 1a-f; 1920: 198; 1923: 63, fig. 19a-f; 1932: 229, fig. 1a, b; Aiyer, 1929: 19, fig. 2a-d. (non) Nais pectinata Stephenson. Stephenson, 1931: 302. Nais denticulata Chen, 1940: 39, fig. 8A-E. Allonais pectinata(Stephenson). Sperber, 1948: 206; Naidu, 1962: 915; Brinkhurst, 1971: 125, fig. 4J; 1986: 85; Ohtaka, 2003: 194, 195, fig. 3c.

    Material examined. All specimens collected from a shallow ditch covered with duckweed in Mangchi-ri, Irun-myeon, Geoje-si, Gyeongsangnam-do, Korea, 34˚48′52.38′′N, 128˚ 40′31.15′′E, 24 Apr 2013(collector Lee J). GN1304241 and GN1304242: mature, mounted on slides; deposited at LEG. KOSPIV0000193673, KOSPGR0000257078, and KOSPIV 0000193707: mature, preserved in 70% ethanol solution; deposited at NIBR.

    Diagnosis. Length 0.7-1.54mm, width at VI 0.19-0.43mm, number of segments 31-55. No eyes. Prostomium rounded. Dorsal chaetae starting from III. Dorsal chaetae of III with no hair, two needles with pectinate tips(Fig. 3A). Dorsal chaetae bundles of remaining segments, consisting of one hair and one needle with pectinate tip(Fig. 3C). Dorsal chaetal bundle rarely consisting of one needle and two hairs. Pectinate needles consisting of marginal teeth of almost equal length and 3-5 intermediate teeth. Ventral chaetae beginning from II, four per bundle, sometimes one or two per bundle; the upper tooth slightly longer than the lower tooth; upper tooth thinner than lower tooth(Fig. 3D).

    Distribution. North America, Asia, Australia, and Africa.

    Remarks. This is the first record of Allonais pectinata from Korea. The specimens in this study have no hair on the dorsal chaetal bundle of segment III, and dorsal chaeta hair occurred first on segment IV(Fig. 3B). The diagnostic features of the specimens in this study were similar to those of previous studies(Naidu and Naidu, 1979), except the chaeta hair starting from segment IV. The distinctive features of this species are dorsal needle chaetae with pectinate tips.

  • 1. Aiyer KSP 1929 An account of aquatic Oligochaeta of Travancore [Records of the Indian Museum] Vol.31 P.13-76 google
  • 2. Blainville H 1825 Naiade, Naide. Dictionnaire des Sciences Naturelles, 34. 127 P.131 google
  • 3. Brinkhurst RO 1971 The aquatic Oligochaeta known from Australia, New Zealand, Tasmania and Adjacent Islands. University of Queensland Papers. Department of Zoology, Vol. 3 P.99-128 google
  • 4. Brinkhurst RO 1986 Guide to the freshwater aquatic microdrile oligochaetes of North America [Canadian Special Publication of Fisheries and Aquatic Sciences] Vol.84 P.1-259 google
  • 5. Brinkhurst RO, Jamieson BGM 1971 Aquatic Oligochaeta of the World P.1-860 google
  • 6. Cekanovskaya OV 1962 The aquatic Oligochaeta of U.S.S.R [Opredeliteli po Faune S.S.S.R.] Vol.78 P.1-411 google
  • 7. Chen Y 1940 Taxonorny and faunal relations of the limnic Oligochaeta of China [Contributions of the Biological Laboratory of the Science Society of China (Zoology)] Vol.14 P.1-131 google
  • 8. Dutrochet H 1819 Note sur un nouveau genre d’Annelides [Bulletin de la Societe Philomatique de Paris] Vol.8 P.155 google
  • 9. Envall I, Kallersjo M, Erseus C 2006 Molecular evidence for the non-monophyletic status of Naidinae (Annelida, Clitellata, Tubificidae) [Molecular Phylogenetics and Evolution] Vol.40 P.570-584 google
  • 10. Erseus C 2005 Phylogeny of oligochaetous Clitellata [Hydrobiologia] Vol.535/536 P.357-372 google
  • 11. Ferroniere G 1899 Contribution a l’elude de la faune de la Loire Inferieure (Annelides, Oligochetes) [Bulletin de la Societe des Sciences Naturelles de l’Ouest de la France] Vol.9 P.229-295 google
  • 12. Gervais P 1838 Note sur la disposition systematique des Annelides chetopodes de la famille des Nais [Bulletin de l’Academie Royale de Sciences et Belles-lettres de Bruxelles] Vol.5 P.13-25 google
  • 13. Jung J 2011 Naidid oligochaetes (Annelida: Clitellata) from the Seokhyeoncheon and Changreungcheon Streams with new record of Nais variabilis [Korean Journal of Limnology] Vol.44 P.407-410 google
  • 14. Jung J 2012 New record of a Naidid Oligochaete species, Ripistes parasita (Annelida: Clitellata: Naididae) from Korea [Animal Systematics, Evolution and Diversity] Vol.28 P.137-139 google
  • 15. Malevich II 1929 Die Oligochaeten der Gewasser der Meschtschera- Niederung. Materialien zur Fauna und zur Oekologie [Arbeiten der Biologischen Station zu Kossino Moscow] Vol.9 P.41-60 google
  • 16. Michaelsen W 1933 Suss-und Brackwasser-Oligochaten von Bonaire, Curacao und Aruba [Zoologische Jahrbucher, Abteilung fur Systematik, Jena] Vol.64 P.327-356 google
  • 17. Naidu KV 1962 Studies on the fresh-water Oligochaeta of South India I: Aeolosomatidae and Naididae. Part 2 [Journal of the Bombay Natural History Society] Vol.59 P.131-1450 google
  • 18. Naidu KV, Naidu KA 1979 Occurrence of Allonais pectinata (Stephenson, 1910) (Oligochaeta: Naididae) in Andhra Pradesh, India [Proceedings of the Indian Academy of Sciences] Vol.88 P.325-327 google
  • 19. Ohtaka A, Nishida M, Shikatani H, Shokita S 2003 Oligochaeta;The flora and fauna of inland waters in the Ryukyu Islands P.190-196 google
  • 20. Ohtaka A, Nishino M 2006 Studies on the aquatic oligochaete fauna in Lake Biwa, central Japan. IV. Faunal characteristics in the attached lakes (naiko) [Limnology] Vol.7 P.129-142 google
  • 21. Park HJ 2013 Taxonomic Review of the Korean Aquatic Oligochaeta (Annelida: Clitellata) P.1-85 google
  • 22. Pointner H 1911 Beitrage zur Kenntnis der Oligochaeten fauna. der Gewasser von Graz [Wissenschaftliche Zoology] Vol.9 P.269-319 google
  • 23. Schuster RW 1915 Morphologische und biologische Studien an Naiden in Sachsen und Bohmen [Internationale Revue der Hydrobiologie und Hydrographie Supplement] Vol.7 P.1-108 google
  • 24. Sperber C 1948 A taxonomical study of the Naididae [Zoologiska Bidrag fran Uppsala] Vol.28 P.1-296 google
  • 25. Sperber C 1950 A guide for the determination of European Naididae [Zoologiska Bidrag fran Uppsala] Vol.29 P.45-78 google
  • 26. Stephenson J 1910 On some aquatic Oligochaete worms commensal in Spongilla carteri [Records of the Indian Museum] Vol.5 P.233-240 google
  • 27. Stephenson J 1920 On a collection of Oligochaeta from the lesser known parts of India and from Eastern Persia [Memoirs of the Indian Museum] Vol.7 P.191-216 google
  • 28. Stephenson J 1923 Oligochaeta. The fauna of British India P.1-518 google
  • 29. Stephenson J 1925 Oligochaeta from various regions including those collected by the Mount Everest Expedition 1924 [Proceedings of the Zoological Society of London] Vol.95 P.879-907 google
  • 30. Stephenson J 1931 Oligochaeta from the Malay Peninsula [Journal of the Federated Malay States Museum] Vol.16 P.261-285 google
  • 31. Stephenson J 1932 Report on the Oligochaeta: Mr. Omer-Cooper’s investigation of the Abyssinian fresh waters [Proceedings of the Zoological Society of London] Vol.102 P.227-256 google
  • 32. Timm T 1999 Distribution of freshwater oligochaetes in the west and east coastal regions of the North Pacific Ocean [Hydrobiologia] Vol.406 P.67-81 google
  • 33. Ude H 1929 Oligochaeta [Die Tierwelt Deutschlands] Vol.15 P.1-168 google
  • 34. Vaillant L, De Quatrefages A, Vaillant L 1890 Histoire naturelle des Anneles marins et d’eau douce. In: Lombriciniens, Hirudiniens, Bdellomorphes, Teretulariesn et Planariens (Eds., De Quatrefages A, Vaillant L). Vol. 3 P.386 google
  • 35. Wang HZ, Cui YD 2007 On the studies of Microdrile Oligochaeta and Aeolosomatidae (Annelida) in China: brief history and species checklist [Acta Hydrobiologica Sinica Supplement] Vol.31 P.87-98 google
이미지 / 테이블
  • [ Fig. 1. ]  Dero dorsalis Ferroniere, 1899. A, Dorsal chaetal bundle of IV (length of bifid chaeta 30.43μm, length of hair chaeta 90.92 μm); B, Ventral chaeta of IV (length 36.37 μm); C, Branchial fossa and posterior gills, dorsal aspect. Scale bars: A, C= =10 μm, B=5 μm.
    Dero dorsalis Ferroniere, 1899. A, Dorsal chaetal bundle of IV (length of bifid chaeta 30.43μm, length of hair chaeta 90.92 μm); B, Ventral chaeta of IV (length 36.37 μm); C, Branchial fossa and posterior gills, dorsal aspect. Scale bars: A, C= =10 μm, B=5 μm.
  • [ Fig. 2. ]  A picture of the posterior part of Dero dorsalis in the living state.
    A picture of the posterior part of Dero dorsalis in the living state.
  • [ Fig. 3. ]  Allonais pectinata (Stephenson, 1910). A, Dorsal pectinate chaetae of III (length 2.52 μm [left], 2.62 μm [right]); B, Dorsal chaeta of IV (length 3.30 μm); C, Dorsal chaetae of VI (length 3.91 μm [left], 3.37 μm [middle]); D, Ventral chaeta of III (length 5.93μm). Scale bars: A-D=1μm.
    Allonais pectinata (Stephenson, 1910). A, Dorsal pectinate chaetae of III (length 2.52 μm [left], 2.62 μm [right]); B, Dorsal chaeta of IV (length 3.30 μm); C, Dorsal chaetae of VI (length 3.91 μm [left], 3.37 μm [middle]); D, Ventral chaeta of III (length 5.93μm). Scale bars: A-D=1μm.
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