Open WL Archief (OWA)

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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.

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one publication added to basket [29933]

Electrophoretic heterogeneity within and between flat periwinkles (Mollusca : Gastropoda) along an intertidal transect at Ria Ferrol, northwest Spain Olabarria, C.; Timmermans, J.M.; Backeljau, T. (1998). Electrophoretic heterogeneity within and between flat periwinkles (Mollusca : Gastropoda) along an intertidal transect at Ria Ferrol, northwest Spain. Hydrobiologia 378: 11-19 In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 29933 [ download pdf ]

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Trefwoorden

ANE, Spain, Galicia, Ria de Ferrol Environments > Aquatic environment > Marine environment > Intertidal environment Genetic diversity Littorinidae Children, 1834 [WoRMS] ANE, Spain, Galicia, Ria de Ferrol [Marine Regions] Marien/Kust

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Auteurs		Top
Olabarria, C. Timmermans, J.M. Backeljau, T., meer

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Abstract

Using isoelectric focusing of esterases (EST), general proteins (GP) and myoglobin (Mb), we surveyed intra- and interspecific differentiation in flat periwinkles along a vertical intertidal transect in the Ensenada do Bano at Ria Ferrol, N.W. Spain. In this region, L. obtusata occurs in four algal belts, although it is rare in the lowest zone defined by Fucus serratus. L. fabalis is common in the F: serratus and F: vesiculosus belt, but is absent higher up on Ascophyllum nodosum and F: spiralis. Our data show that (I) EST and GP consistently differentiate between L. obtusata and L. fabalis, Without however providing useful diagnostic markers, (2) L. fabalis is the less variable (heterozygous), but more heterogeneous species, (3) Mb patterns show significant heterogeneity in L. obtusata between the F. serratus zone and the other algal belts, but not in L. fabalis, and (4) the data on littorinid Mb appear inconsistent with a dimeric protein controlled by a single locus. Yet, assuming two loci coding for a monomeric (or dissociated dimeric) protein produces for the flat periwinkles a data set in which no significant deviations from Hardy-Weinberg expectations were detected. Nevertheless, this speculative interpretation fails to explain all littorinid Mb data. Hence the genetics and structure of littorinid Mb need further study.

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