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Lack of significant esterase and myoglobin differentiation in the periwinkle, Littorina striata (Gastropoda, Prosobranchia)
De Wolf, H.; Backeljau, T.; Verhagen, R. (1998). Lack of significant esterase and myoglobin differentiation in the periwinkle, Littorina striata (Gastropoda, Prosobranchia). Hydrobiologia 378: 27-32
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158, more
Peer reviewed article  

Available in  Authors 
    VLIZ: Open Repository 29935 [ OMA ]

Keywords
    Ecophysiology; Myoglobins; Population genetics; Littorina striata King, 1832 [WoRMS]; Marine

Authors  Top 
  • De Wolf, H., more
  • Backeljau, T., more
  • Verhagen, R.

Abstract
    The relationship between gene flow and the maintenance of geographic or morphology-related variation in the polymorphic Macaronesian periwinkle, Littorina striata, was investigated by means of isoelectric focusing of esterases (EST) and myoglobin (Mb). This revealed that: (1) individual EST variation is very high, (2) there is no EST differentiation between sexes, shell morphotypes or wave-exposure regimes, (3) there is no clear macrogeographic patterning of EST variability, although both Cape Verde Islands have the highest, with exception of Flores, mean number of EST bands, and (4) there is no Mb variation, not even between islands separated by more than 2000 km. These results indicate that L. striata shows a high degree of genetic homogeneity among geographic populations and that the morphological patterning in this species persists in the presence of intense gene flow.

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