Electrophoretic heterogeneity in Hediste diversicolor (Annelida : Polychaeta) within and between estuaries in Northern France

Citation
P. Scaps et al., Electrophoretic heterogeneity in Hediste diversicolor (Annelida : Polychaeta) within and between estuaries in Northern France, VIE MILIEU, 51(3), 2001, pp. 99-111
Citations number
68
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
VIE ET MILIEU-LIFE AND ENVIRONMENT
ISSN journal
0240-8759 → ACNP
Volume
51
Issue
3
Year of publication
2001
Pages
99 - 111
Database
ISI
SICI code
0240-8759(200109)51:3<99:EHIHD(>2.0.ZU;2-Y
Abstract
We compared the general protein and non-specific esterases band patterns of different populations of the polychaete annelid Hediste diversicolor (O.F. Muller) (Nereididae) located at different spatial scales in the estuaries of Aa, Canche, Authie and Rance (France). Our results indicate a restricted gene flow between populations located in different estuaries but also with in the same estuaries. These results could be explained by the particular l ife cycle of this species ("bentho-pelagic" life cycle with a brief semi-pe lagic larval phase) which does not favour a great dispersion of larvae and by local marine currents and eroding channels which canalize an oriented di ssemination of larvae. In a preliminary step, intra-population banding patt ern variability was assessed in two populations by high resolution two-dime nsional electrophoresis analysis of proteins. Our results show a great inte r-individual variability in protein profiles. These results are in good con cordance with the hypothesis of the existence of a restricted gene flow bet ween populations.