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Do Leptocephali of the European Eel Swim to Reach Continental Waters? Status of the Question

  • J.D. McCleave (a1), P.J. Brickley (a1), K.M. O'Brien (a2), D.A. Kistner (a1), M.W. Wong (a1), M. Gallagher (a2) and Stephanie M. Watson (a3)...
Abstract

We examined recent arguments that leptocephali of the European eel, Anguilla anguilla, swim in an oriented manner, rather than drift, to reach the continental shelf of Europe and the Mediterranean Sea. There is a cline of increasing body length of leptocephali from south to north and from west to east from the Mid-Atlantic Ridge (30°W) to the continental shelf, which could represent migration from south-west to north-east, transport eastward at all latitudes, or increased growth rate with latitude. Evidence that this cline is a trend in age of arriving glass eels along the European coast, and that the duration of migration is less than one year, is weak. Ages reported in the literature for specimens from Morocco to The Netherlands were based on the unvalidated assumption that rings in otoliths were deposited daily. The assumption is unwarranted because of low metabolic rate and uncertainty of nutritional mode of leptocephali. If the assumption were accepted, calculated hatching dates of eels arriving at the European coast imply year-round spawning. Lengths of leptocephali in the Sargasso Sea at various times imply that eels spawn only in late winter and spring. Leptocephali contain tiny amounts of muscle, especially aerobic muscle for sustained swimming. They probably have insufficient capability to swim across the Atlantic in the less than 1–2 y reported by others.

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S. Appelbaum & R. Riehl , 1993. Scanning electron microscopic observations on the head morphology of seven different leptocephali belonging to six eel families (Anguilliformes). Helgoländer Meeresuntersuchungen, 47, 113124.

H.-D. Bast & B. Strehlow , 1990. Length composition and abundance of eel larvae, Anguilla anguilla (Anguilliformes: Anguillidae), in the Iberian Basin (northeastern Atlantic) during July-September 1984. Helgoländer Meeresuntersuchungen, 44, 353361.

N.A. Bray , C.D. Winant , T.H. Kinder & J. Candela , 1990. Generation and kinematics of the internal tide in the Strait of Gibraltar. In The physical oceanography of sea straits (ed. Pratt L.J. ), pp. 477491. Dordrecht: Kluwer.

A.F. Bruun , 1963. The breeding of the north Atlantic freshwater-eels. Advances in Marine Biology, 1, 137169.

M. Castonguay & J.D. McCleave , 1987. Vertical distribution, diel and ontogenetic vertical migrations and net avoidance of leptocephali of Anguilla and other common species in the Sargasso Sea. Journal of Plankton Research, 9, 195214.

P.S. Enger , L. Kristensen & O. Sand , 1976. The perception of weak electric d.c. currents by the European eel (Anguilla anguilla). Comparative Biochemistry and Physiology, 54A, 101103.

W.J. Gould , 1985. Physical oceanography of the Azores front. Progress in Oceanography, 14, 167190.

M. Hanson , L. Karlsson & H. Westerberg , 1984. Magnetic material in European eel (Anguilla anguilla L.). Comparative Biochemistry and Physiology, 77A, 221224.

A.J. Haro & W.H. Krueger , 1988. Pigmentation, size, and migration of elvers (Anguilla rostrata (Lesueur)) in a coastal Rhode Island stream. Canadian Journal of Zoology, 66, 25282533.

W.H. Hulet , 1978. Structure and functional development of the eel leptocephalus Ariosoma balearicum (De La Roche, 1809). Philosophical Transactions of the Royal Society of London B, 282, 107138.

R.H. Käse , J.F. Price , P.L. Richardson & W. Zenk , 1986. A quasi-synoptic survey of the thermocline circulation and water mass distribution within the Canary Basin, journal of Geophysical Research, 91, 97399748.

L. Karlsson , 1985. Behavioural responses of European silver eels (Anguilla anguilla) to the geomagnetic field. Helgoländer Meeresuntersuchungen, 39, 7181.

R.C. Kleckner & J.D. McCleave , 1988. The northern limit of spawning by Atlantic eels (Anguilla spp.) in the Sargasso Sea in relation to thermal fronts and surface water masses, journal of Marine Research, 46, 647667.

B. Klein & G. Siedler , 1989. On the origin of the Azores Current. Journal of Geophysical Research, 94, 61596168.

R. Kracht , 1982. On the geographic distribution and migration of I- and II-group eel larvae as studied during the 1979 Sargasso Sea Expedition. Helgoldnder Meeresuntersuchungen, 35, 321327.

R. Kracht & F.-W. Tesch , 1981. Progress report on the eel expedition of RV ‘Anton Dohrn’ and RC ‘Friedrich Heincke’ to the Sargasso Sea 1979. Environmental Biology of Fishes, 6, 371375.

W. Krauss , 1986. The North Atlantic Current. Journal of Geophysical Research, 91, 50615074.

R. Lecomte-Finiger , 1992. Growth history and age at recruitment of European glass eels (Anguilla anguilla) as revealed by otolith microstructure. Marine Biology, 114, 205210.

M.H. Martin , 1995. Validation of daily growth increments in otoliths of Anguilla rostrata (Lesueur) elvers. Canadian Journal of Zoology, 73, 208211.

J.D. McCleave , 1993. Physical and behavioural controls on the oceanic distribution and migration of leptocephali. Journal of Fish Biology, 43, supplement A, 243273.

N. Mochioka , M. Iwamizu & T. Kanda , 1993. Leptocephalus eel larvae will feed in aquaria. Environmental Biology of Fishes, 36, 381384.

T. Otake , J. Hirokawa , H. Fujimoto & K. Imaizumi , 1995. Fine structure and function of the gut epithelium of pike eel larvae. Journal of Fish Biology, 47, 126142.

T. Otake , K. Nogami & K. Maruyama , 1993. Dissolved and particulars organic matter as possible food sources for eel leptocephali. Marine Ecology Progress Series, 92, 2734.

N.R. Pettigrew & R.A. Hyde , 1990. The structure of the internal bore in the Strait of Gibraltar and its influence on the Atlantic inflow. In The physical oceanography of sea straits (ed. Pratt L.J. ), pp. 493508. Dordrecht: Kluwer.

E. Pfeiler , 1986. Towards an explanation of the developmental strategy in leptocephalus larvae of marine teleost fishes. Environmental Biology of Fishes, 15, 313.

E. Pfeiler & J.J. Govoni , 1993. Metabolic rates in early life history stages of elopomorph fishes. Biological Bulletin. Marine Biological Laboratory, Woods Hole, 185, 277283.

R.T. Pollard & S. Pu , 1985. Structure and circulation of the upper Atlantic Ocean northeast of the Azores. Progress in Oceanography, 14, 443462.

S.A. Rommel Jr, & J.D. McCleave , 1973a. Sensitivity of American eels (Anguilla rostrata) and Atlantic salmon (Salmo salar) to weak electric and magnetic fields, journal of the Fisheries Research Board of Canada, 30, 657663.

S.A. Rommel Jr, & J.D. McCleave , 1973b. Prediction of oceanic electric fields in relation to fish migration, journal du Conseil international pour I ‘Exploration de la Mer, 35, 2731.

J. Schmidt , 1922. The breeding places of the eel. Philosophical Transactions of the Royal Society of London B, 211, 179211.

W.J. Schmitz Jr., & M.S. McCartney , 1993. On the North Atlantic circulation. Reviews of Geophysics, 31, 29–19.

M. Schoth & F.-W. Tesch , 1982. Spatial distribution of 0-group eel larvae (Anguilla sp.) in the Sargasso Sea. Helgolander Meeresuntersuchungen, 35, 309320.

A. Sy , 1988. Investigation of large-scale circulation patterns in the central North Atlantic: the North Atlantic Current, the Azores Current, and the Mediterranean water plume in the area of the Mid-Atlantic Ridge. Deep-Sea Research, 35, 383413.

A. Sy , U. Schauer & J. Meincke , 1992. The North Atlantic Current and its associated structure above and eastwards of the Mid-Atlantic Ridge. Deep-Sea Research, 39, 825853.

O. Tabeta , K. Tanaka , J. Yamada & W.-N. Tzeng , 1987. Aspects of the early life history of the Japanese eel Anguilla japonica determined from otolith microstructure. Nippon Suisan Gakkaishi, 53, 17271734.

F.-W. Tesch , 1980. Occurrence of eel Anguilla anguilla larvae west of the European continental shelf, 1971–1977. Environmental Biology of Fishes, 5, 185190.

F.-W. Tesch , 1982. The Sargasso Sea eel expedition 1979. Helgolander Meeresuntersuchungen, 35, 263277.

F.-W. Tesch & G. Wegner , 1990. The distribution of small larvae of Anguilla sp. related to hydrographic conditions 1981 between Bermuda and Puerto Rico. Internationale Revue der Gesamten Hydrobiologie, 75, 845858.

F.-W. Tesch , T. Wendt & L. Karlsson , 1992. Influence of geomagnetism on the activity and orientation of the eel, Anguilla anguilla (L.), as evident from laboratory experiments. Ecology of Freshwater Fish, 1, 5260.

K. Tsukamoto , 1990. Recruitment mechanism of the eel, Anguilla japonica, to the Japanese coast. journal of Fish Biology, 36, 659671.

D.W. Tucker , 1959. A new solution to the Atlantic eel problem. Nature, London, 183, 495501.

A.W.H. Turnpenny , 1983. Swimming performance of juvenile sprat, Sprattus sprattus L., and herring, Clupea harengus L., at different salinities, journal of Fish Biology, 23, 321325.

W.N. Tzeng , 1990. Relationship between growth rate and age at recruitment of Anguilla japonica elvers in a Taiwan estuary as inferred from otolith growth increments. Marine Biology, 107, 7581.

A. Umezawa & K. Tsukamoto , 1991. Factors influencing otolith increment formation in Japanese eel, Anguilla japonica T. & S., elvers, journal of Fish Biology, 39, 211223.

G.R. Williamson , 1987. Vertical drifting position of glass eels, Anguilla rostrata, off Newfound-land. Journal of Fish Biology, 31, 587588.

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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
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