Eel Biology pp 107-117 | Cite as

The Silver Eel

  • Jun Aoyama
  • Michael J. Miller


Anguillid eels are famous for their long spawning migrations to the open ocean, and these migrations take place after a transformation from yellow-phase to silver-phase eels (Tesch 1977; see Haro, this volume). Yellow eels in both freshwater and coastal marine habitats undergo a variety of morphological changes when they begin their downstream migration, and these changes appear to be related to the very different environmental conditions and activities associated with a long migration in the open ocean. These changes may ecologically and physiologically facilitate their oceanic migration through environments that are drastically different from their typical habitats in freshwater or coastal areas during their yellow eel growth phase.


Sexual Maturation Downstream Migration Anguilla Rostrata Sexual Matu 
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  1. Andjus RK, Damjanovic I, Gacic Z, Konjevic D,Andjus PR (1998) Electroretinographic evaluation of spectral sensitivity in yellow and silver eels (Anguilla anguilla). Vis Neurosci 15:923–930PubMedCrossRefGoogle Scholar
  2. Aoyama J, Watanabe S, Miyai T, Sasai S, Nishida M, Tsukamoto K (2000) The european eel, Anguilla anguilla (L.), in Japanese waters. Dana 12:9–13Google Scholar
  3. Aoyama J, Nishida M, Tsukamoto K (2001) Molecular phylogeny and evolution of the freshwater eel, genus Anguilla. Mol Phylogenet Evol 20:450–459PubMedCrossRefGoogle Scholar
  4. Barbin GP, McCleave JD (1997) Fecundity of the American eel Anguilla rostrata at 45 degrees N in Maine, USA. J Fish Biol 51:840–847Google Scholar
  5. Bertin L (1956) Eels, a biological study. Cleaver-Hume Press, LondonGoogle Scholar
  6. Beullens K, Eding EH, Ollevier F, Komen J, Richter CJJ (1997) Sex differentiation, changes in length, weight and eye size before and after metamorphosis of European eel (Anguilla anguilla L) maintained in captivity. Aquaculture 153:151–162CrossRefGoogle Scholar
  7. Bo#x00EB;tius I, Bo#x00EB;tius J (1967) Studies in the European eel, Anguilla anguilla (L.). Experimental induction of the male sexual cycle, its relation to temperature and other factors. Medd Dan Fisk- Havunders 4:339–405Google Scholar
  8. Bo#x00EB;tius I, Bo ëtius J (1980) Experimental maturation of female silver eels, Anguilla anguilla. Estimates of fecundity and energy reserves for migration and spawning. Dana 1:1–28Google Scholar
  9. Boubee JA, Mitchell CP, Chisnall BL, West DW, Bowman EJ, Haro A (2001) Factors regulating the downstream migration of mature eels (Anguilla spp,) at Aniwhenua Dam, Bay of Plenty, New Zealand. NZ J Mar Freshw Res 35:121–134CrossRefGoogle Scholar
  10. Colombo G, Grandi G (1996) Histological study of the development and sex differentiation of the gonad in the European eel. J Fish Biol 48:493–512CrossRefGoogle Scholar
  11. Colombo G, Grandi G, Rossi R (1984) Gonad differentiation and body growth in Anguilla anguilla L. J Fish Biol 24:215–228CrossRefGoogle Scholar
  12. Cottrill RA, McKinley RS, Van der Kraak G (2002) An examination of utilizing external measures to identify sexually maturing female American eels, Anguilla rostrata, in the St. Lawrence River. Env Biol Fishes 65:271–287CrossRefGoogle Scholar
  13. Durif C, Elie P, Dufour S, Marchelidon J, Vidal B (2001) Analysis of morphological and physiological parameters during the silvering process of the European eel (Anguilla anguilla) in the lake of Grand-Lieu (France). Cybium (Suppl) 24:63–74, S2000Google Scholar
  14. Eggington S (1986) Metamorphosis of the American eel, Anguilla rostrata LeSeur: II. Structural reorganization of the locomotory musculature. J Exp Zool 238:297–309CrossRefGoogle Scholar
  15. Ehrembaum E, Marukawa H (1914) Uber Altersbestimmung und Wachstum beim Aal. Z Fisch 14:89–127Google Scholar
  16. Facey DE, LaBar GW (1981) Biology of American eels in Lake Champlain, Vermont. Trans Am Fish Soc 110:396–402CrossRefGoogle Scholar
  17. Fontaine YA, Pisam M, Le Moal C, Rambourg A (1995) Silvering and gill “mitochondria-rich” cells in the eel, Anguilla anguilla. Cell Tissue Res 281:465–471CrossRefGoogle Scholar
  18. Helfman GS, Bozeman EL, Brothers EB (1984) Size, age, and sex of American eel in a Georgia river. Trans Am Fish Soc 133:132–141CrossRefGoogle Scholar
  19. Helfman GS, Facey DE, Hales S, Bozeman EL (1987) Reproductive ecology of the American eel. In: Dadswell MJ, Klauda RJ, Moffitt CM, Saunders RL, Rulifson RA, Cooper JE (eds) Common strategies of anadromous and catadromous fishes. Massachusetts. American Fisheries Society, Bethesda, pp 286–297Google Scholar
  20. Holmgren K, Wickstr#x00F6;m H, Clevestam P (1997) Sex-related growth of European eel, Anguilla anguilla, with focus on median silver eel age. Can J Fish-Aquat Sci 54:2775–2781CrossRefGoogle Scholar
  21. Hope AJ, Partridge JC, Hayes PK (1998) Switch in rod opsin gene expression in the European eel, Anguilla anguilla (L.). Proc R Soc Lond B 265:869–874CrossRefGoogle Scholar
  22. Hurley DA (1972) The American eel (Anguilla rostrata) in eastern Ontario. Can J Fish Aquat Sci 29:535–543Google Scholar
  23. Jellyman DJ (1987) Review of the marine life history of Australian temperate species of Anguilla. In: Dadswell MJ, Klauda RJ, Moffitt CM, Saunders RL, Rulifson RA, Cooper JE (eds) Common strategies of anadromous and catadromous fishes. Massachusetts. American Fisheries Society, Bethesda, pp 276–285Google Scholar
  24. Jellyman D (1997) Variability in growth rates of freshwater eels (Anguilla spp.) in New Zealand. Ecol Freshw Fish 6:108–115CrossRefGoogle Scholar
  25. Jellyman D (2001) The influence of growth rate on the size of migrating female eels in Lake Ellesmere, New Zealand. J Fish Biol 58:725–736CrossRefGoogle Scholar
  26. Jessop BM (1987) Migrating American eels in Nova Scotia. Trans Am Fish Soc 116:161–170CrossRefGoogle Scholar
  27. Kleckner RC (1980a) Swimbladder wall guanine enhancement related to migratory depth in silver phase Anguilla rostrata. Comp Biochem Physiol A Physiol 65:351–354CrossRefGoogle Scholar
  28. Kleckner RC (1980b) Swim bladder volume maintenance related to initial oceanic migratory depth in silver-phase Anguilla rostrata. Science 208:1481–1482PubMedCrossRefGoogle Scholar
  29. Kleckner RC, Kruger WH (1981) Changes in swim bladder retial morphology in Anguilla rostrata during premigration metamorphosis. J Fish Biol 18:569–577CrossRefGoogle Scholar
  30. Krueger WH, Oliveira K (1997) Sex, size, and gonad morphology of silver American eels Anguilla rostrata. Copeia 1997:415–420Google Scholar
  31. Larson P, Hamrin S, Okla L (1990) Fat content as a factor inducing migratory behaviour in the eel (Anguilla anguilla) to the Sargasso Sea. Naturwissenschaften 77:488–490CrossRefGoogle Scholar
  32. Lionetto MG, Maffia M,Vignes F, Storelli C, Schettino T (1996) Differences in intestinal electrophysiological parameters and nutrient transport rates between eels (Anguilla anguilla) at yellow and silver stages. J Exp Zool 275:399–405CrossRefGoogle Scholar
  33. Lokman PM,Vermeulen GJ, Lambert JGD,Young G (1998) Gonad histology and plasma steroid profiles in wild New Zealand freshwater eels (Anguilla dieffenbachii and A. australis) before and at the onset of the natural spawning migration. I. Females. Fish Physiol Biochem 19:325–338CrossRefGoogle Scholar
  34. Moriarty C (1983) Age determination and growth rate of eels, Anguilla anguilla (L). J Fish Biol 23:257–264CrossRefGoogle Scholar
  35. Oliveira K (1999) Life history characteristics and strategies of the American eel, Anguilla rostrata. Can J Fish Aquat Sci 56:795–802CrossRefGoogle Scholar
  36. Oliveira K, McCleave JD (2002) Sexually different growth histories of the American eel in four rivers in Maine. Trans Am Fish Soc 131:203–211CrossRefGoogle Scholar
  37. Oliveira K, McCleave JD, Wippelhauser GS (2001) Regional variation and the effect of lake:river area on sex distribution of American eels. J Fish Biol 58:943–952Google Scholar
  38. Panfili J, Xim#x00EB;n#x00EB;s MC, Crivelli A (1994) Sources of variation in growth of the European eel (Anguilla anguilla) estimated from otoliths. Can J Fish Aquat Sci 51:506–515CrossRefGoogle Scholar
  39. Pankhurst NW (1982a) Changes in the skin scale complex with sexual maturation in the European eel Anguilla anguilla (L). J Fish Biol 21:549–561CrossRefGoogle Scholar
  40. Pankhurst NW (1982b) Relation of visual changes to the onset of sexual maturation in the European eel, Anguilla anguilla (L.). J Fish Biol 21:127–140CrossRefGoogle Scholar
  41. Pankhurst NW (1982c) Changes in body musculature with sexual maturation in the European eel Anguilla anguilla (L). J Fish Biol 21:417–428CrossRefGoogle Scholar
  42. Pankhurst NW, Lythgoe JN (1982) Structure and colour of the integument of the European eel Anguilla anguilla (L.). J Fish Biol 21:279–296CrossRefGoogle Scholar
  43. Pankhurst NW, Lythgoe JN (1983) Changes in vision and olfaction during sexual maturation in the European eel Anguilla anguilla (L.). J Fish Biol 23:229–240CrossRefGoogle Scholar
  44. Pankhurst NW, Sorensen PW (1984) Degeneration of the alimentary-tract in sexually maturing European Anguilla anguilla (Lesueur). Can J Zool 62:1143–1149CrossRefGoogle Scholar
  45. Peters G (1982) The effect of stress on the stomach of the European eel Anguilla anguilla L. J Fish Biol 21:497–512CrossRefGoogle Scholar
  46. Poole WR, Reynolds JD (1996) Growth rate and age at migration of Anguilla anguilla. J Fish Biol 48:633–642Google Scholar
  47. Robertson OH, Wexler BC (1960) Histological changes in the organs and tissues of migrating and spawning Pacific salmon (genus Onchorhynchus). Endocrinology 66:222–239PubMedCrossRefGoogle Scholar
  48. Robinet T, Feunteun E (2002) First observation of shortfinned Anguilla bicolor bicolor and longfinned Anguilla marmorata silver eels in the Reunion Island. Bull Fr Peche Piscic 364:87–95CrossRefGoogle Scholar
  49. Sasai S, Kaneko T, Hasegawa S, Tsukamoto K (1998) Morphological alteration in two types of gill chloride cells in Japanese eels (Anguilla japonica) during catadromous migration. Can J Zool 76:1480–1487Google Scholar
  50. Sasai S,Aoyama J, Watanabe S, Kaneko T, Miller MJ, Tsukamoto K (2001) Occurrence of migrating silver eels Anguilla japonica in the East China Sea. Mar Ecol Prog Ser 212:305–310CrossRefGoogle Scholar
  51. Sinha VPR, Jones JW (1975) The European freshwater eel. Liverpool University Press, LiverpoolGoogle Scholar
  52. Sloane RD (1984) Preliminary observations of migrating adult freshwater eels (Anguilla australis australis Richardson) in Tasmania. Aust J Mar Freshw Res 35:471–476CrossRefGoogle Scholar
  53. Sugeha HY,Aoyama J, Tsukamoto K (2001) First report on the silver eels of Anguilla marmorata (Quoy Gaimard) from central Sulawesi Island, Indonesia. In: Aida K, Tsukamoto K, Yamauchi K (eds) Proceedings of the international symposium: advances in eel biology. University of Tokyo, Tokyo, pp 137–139Google Scholar
  54. Svedang H, Wickstr#x00F6;m H (1997) Low fat contents in female silver eels: indications of insufficient energetic stores for migration and gonadal development. J Fish Biol 50:475–486CrossRefGoogle Scholar
  55. Svedang H, Numan E, Wickström H (1996) Maturation patterns in female European eel: age and size at the silver eel stage. J Fish Biol 48:342–351CrossRefGoogle Scholar
  56. Svedang H, Wickszr#x00F6;m H, Reizenstein M, Holmgren K, Florenius P (1998) Accuracy and precision in eel age estimation, using otoliths of known and unknown age. J Fish Biol 53:456–464Google Scholar
  57. Tesch FW (1977) The eel: biology and management of anguillid eels. Chapman and Hall, LondonGoogle Scholar
  58. Todd PR (1980) Size and age of migrating New Zealand freshwater eels (Anguilla spp.). NZ J Mar Freshw Res 14:283–293CrossRefGoogle Scholar
  59. Todd PR (1981) Morphometric changes, gonad histology, and fecundity estimates in migrating New Zealand freshwater eels. N Z J Mar Freshw Res 15:155–170CrossRefGoogle Scholar
  60. Tsukamoto K,Nakai I, Tesch WV (1998) Do all freshwater eels migrate? Nature (Lond) 396:635–636CrossRefGoogle Scholar
  61. Tzeng WN, Lin HR, Wang CH, Xu SN (2000) Differences in size and growth rates of male and female migrating Japanese eels in Pearl River, China. J Fish Biol 57:1245–1253CrossRefGoogle Scholar
  62. Vollestad LA (1992) Geographic variation in age and length at metamorphosis of maturing European eel: environmental effects and phenotypic plasticity. J Fish Biol 61:41–48Google Scholar
  63. Vollestad LA, Jonsson B (1986) Life-history characteristics of the European eel Anguilla anguilla in the Imsa River, Norway. Trans Am Fish Soc 115:864–871CrossRefGoogle Scholar
  64. Wenner CA, Musick JA (1974) Fecundity and gonad observations of the American eel, Anguilla rostrata, migrating from Chesapeake Bay, Virginia. J Fish Res Board Can 31:1387–1391CrossRefGoogle Scholar
  65. Williamson GR, Bo#x00EB;tius J (1994) The eels Anguilla marmorata and A. japonica in the Pearl River, China and Hong Kong. Asian Fish Sci 6:335–457Google Scholar
  66. Wood P, Partridge JG (1993) Opsin substitution induced in retinal rods of the eel Anguilla anguilla (L.): a model for G-protein-linked receptors. Proc R Soc Lond B 254:227–232CrossRefGoogle Scholar
  67. Yamada Y, Zhang H, Okamura A, Tanaka S, Horie N, Mikawa N, Utoh T, Oka HP (2001) Morphological and histological changes in the swim bladder during maturation of the Japanese eel. J Fish Biol 58:804–814CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Tokyo 2003

Authors and Affiliations

  • Jun Aoyama
    • 1
  • Michael J. Miller
    • 1
  1. 1.Ocean Research InstituteThe University of TokyoNakano-ku, TokyoJapan

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