FN Archimer Export Format PT J TI Sur un phénomème de spéciation induit par l'environnement chez les Soritidae actuels (Foraminifères) OT A phenomenon of speciation induced by the environment on present-day soritids (foraminifera) BT AF LEVY, A AS 1:; FF 1:; IF 0.662 TC 7 UR https://archimer.ifremer.fr/doc/00098/20895/18509.pdf LA French DT Article DE ;PROTOZOA;LARGER FORAMINIFERA;SPECIATION;ECOLOGY;PHYLOGENY AB Archaias angulatus is a soritid species found in abundance on littoral intertropical carbonate platforms. In the margino-littoral euryhaline biotopes, wedged in the neighbouring littoral marine environment, lives a distinct but similar form: Androsina lucasi. As the latter cannot migrate by sea or be transported by birds or fish, it cannot have been derived phylogenetically from an ancestral species before colonizing this wedged habitat in space and time. Only the idea of a reiterated phenomenon of speciation induced by the environment from another littoral species (Archaias angulatus) can explain its noticeable ubiquity in margino-littoral biotopes isolated from one another but each in contact with the biotopes favoured by Archaias angulatus. This interpretation is reinforced by morpho-structural, taxinomic, biological and ecological data concerning these two taxa. PY 1994 SO Oceanologica Acta SN 0399-1784 PU Gauthier-Villars VL 17 IS 1 UT A1994NQ60800003 BP 33 EP 41 ID 20895 ER EF