Summary: Eur. J. Phycol. (2005), 40: 397407
Analysis of sexual phenotype and prezygotic fertility in natural
populations of Fucus spiralis, F. vesiculosus (Fucaceae,
Phaeophyceae) and their putative hybrids
, ESTER A. SERRA~ O2
, GARETH A. PEARSON2
CAROLYN R. ENGEL1
, CHRISTOPHE DESTOMBE1
AND MYRIAM VALERO1
Equipe Evolution et Ge´ne´tique des Populations Marines. UMR-CNRS/UPMC 7144 Lia Diams, Station Biologique de Roscoff.
B.P.74. Place Georges Teissier, 29682 Roscoff cedex France
CCMAR/CIMAR Laborato´rio Associado, FCMA, Universidade do Algarve, 8005-139 Faro, Portugal
(Received 2 February 2005; accepted 26 August 2005)
In the genus Fucus, the character dioecy/hermaphroditism has undergone multiple state changes and hybridization is possible
between taxa with contrasting mating systems, e.g. between the dioecious Fucus vesiculosus and the hermaphrodite F. spiralis.
In the context of mating system evolution, we evaluated the potential consequences of hybridization by studying the variation