ISSN:
1573-5117
Keywords:
Biogeography
;
Chordariales
;
crossing
;
introduction
;
Mediterranean
;
Phaeophyceae
;
sexuality
;
Sphaerotrichia divaricata
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Crossing studies revealed an intraspecific sterility barrier on the level of zygote formation between Japanese Sphaerotrichia divaricata and isolates of the same species from the Northeast Pacific and the North Atlantic. Because no consistent morphological differences exist between sporophytes from Japan and other areas, we propose not to distinguish the intersterile populations as different species. Japanese Sphaerotrichia and isolates from a recently detected population in the Étang de Thau, French Mediterranean coast, are interfertile. The crossing studies support the assumption that this Mediterranean population is a recent introduction from Japan.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00049000
Permalink