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Bimodality in head shape in European eel
Ide, C.; De Schepper, N.; Christiaens, J.; van Liefferinge, C.; Herrel, A.; Goemans, G.; Meire, P.; Belpaire, C.; Geeraerts, C.; Adriaens, D. (2011). Bimodality in head shape in European eel. J. Zool. (1987) 285(3): 230-238. hdl.handle.net/10.1111/j.1469-7998.2011.00834.x
In: Journal of Zoology. Zoological Society of London: London. ISSN 0952-8369; e-ISSN 1469-7998, meer
Peer reviewed article  

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Trefwoorden
    Anguilliformes; Dimorphism; Anguilliformes [WoRMS]
Author keywords
    phenotypic plasticity; head shape; dimorphism; Anguilliformes

Auteurs  Top | Datasets 
  • Ide, C.
  • De Schepper, N.
  • Christiaens, J.
  • van Liefferinge, C.
  • Herrel, A.
  • Goemans, G.
  • Meire, P.
  • Belpaire, C.
  • Geeraerts, C.
  • Adriaens, D.

Abstract
    The existence of two morphotypes, broadheaded and narrowheaded, in European eels Anguilla anguilla is common knowledge among fishermen and eel biologists in Europe. To test whether European eels really are dimorphic in head shape, a total of 277 specimens from two locations in Belgium (Scheldt–Lippenbroek and Lake Weerde), in combination with a larger data set of 725 eels from river systems across Flanders (the northern part of Belgium) were examined. Our biometric data support the hypothesis that a head shape variation in ‘Belgian’ European eel is best described as having a bimodal distribution. Literature data suggest that this may be the result of phenotypic plasticity related to trophic segregation between morphs.

Datasets (2)
  • Eel pollution data from Lake Weerde (Zemst)
  • Eel pollution monitoring database

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