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Nr. 323 (2001) Gould, Exemplaren Zijn Vrij Klein (Resp. 6.9, 7.0, 7.0 119 SPIRULA- Corr.'blad Ned. Malac. Ver,, nr. 323 (2001) MARIENE MOLLUSKEN UIT HET OOSTELIJK DEEL VAN DE MIDDELLANDSE ZEE 6. De eerste vondsten van CerithiumegenumGould, 1849 H.K. Mienis Marine molluscs from the Eastern Mediterranean. first 6. The finds of Cerithium egenum Gould, 1849 Cerithium small Indo-Pacific is here for the first time from three different localities the egenum, a species reported along Mediterranean coast of Israel (Table 1). Follow-up studies are needed to show whether this Lessepsian migranthas man- aged to establish a permanent foothold in the Eastern Mediterranean. Een revisie van MiddellandseZee materiaalbehoren- 21325); Elat, 1953 (HUJ 1875); Elat, leg. H. Steinitz, Cerithium 1789 1956 haven 1968 de tot het genus Bruguière, (Fam. (HUJ 1877); Elat, dreggingen, (HUJ in de Nationale Mollusken Collecties R. Cerithiidae) van 1867); Egypte, Taba, 1993 (HUJ 3543); Nabeq, leg. Universiteit in Jeruzalem 1982.04.00 de Hebreeuwse (HUJ) en de Platner, (HUJ 1871); Golf van Suez, Egypte, Tel Aviv Universiteit (TAU), en een lokale privé-verza- A-Tur, leg. Y. Ayal, 1979 (HUJ 21327). meling, bracht tot mijn verrassing een nieuwe Lessepsi- het licht: Cerithium Houbrick maakt aanse migrant aan egenum Gould, Volgens Kay (1979) en (1992) 1849. In totaal konden vier vondsten van deze Indo- Cerithium egenum een planktonisch stadium in zijn Pacifische soort afkomstig van de Israëlische Middel- ontwikkelingsfase door. Dit is waarschijnlijk de oorzaak landse Zee-kust genoteerd worden (Tabel 1). dat zo nu en dan larven van deze soort erin slagen om Middel- via het Suez Kanaal in het oostelijk deel van de Tabel 1: Vondsten van Cerithium egenum Gould, 1849 landse Zee door te dringen. De toekomst moet uitmaken in het oostelijk deel van de Middellandse Zee ter hoogte of Cerithium egenum werkelijk een vaste plaats weet te van Israël. veroveren in het kustwater van deLevant. Lokatie Verzamelaar Datum Collectie t.h.v. 55 Fishelson 1971.06.01 TAU/1 Haifa, gedregd op m diepte L. Atlit H.K. Mienis 1988.11.09 HUJ 35717/1 Shiqmona H.K. Mienis 1990.12.12 HUJ 7011/2 Shiqmona E.Holzer 1993.05.00 E. Holzer/1 Alle exemplaren zijn vrij klein (resp. 6.9, 7.0, 7.0, 7.3 Geraadpleegde literatuur Y. & en 10.3 mm) maar komen in vorm, sculptuur en kleur AYAL, SAFRIEL, U.N., 1981. Species composition, geo- distribution and habitat characteristics of rocky volledig overeen met de uitvoerige herbeschrijving van graphical intertidal Cerithiidae (Gastropoda; Prosobranchia) along Houbrick (1992: 86-90). the Red Sea shores of Sinai. — Argamon, Israël Journal of Malacology, 7 (5): 53-72. Cerithium is bekende uit de Indis- egenum een soort HOUBRICK, R.S., 1992. Monograph of the genus Cerithium che en Stille Oceaan waarvan de verspreiding zich uit- Bruguière in the Indo-Pacific (Cerithiidae: Prosobranchia). strekt van de Rode Zee en de oceanische eilanden ter — SmithsonianContributions to Zoology, 510: 1-211. van Oost-Afrika het en Paas Eilandin hoogte in westen KAY, E.A., 1979. Hawaiian Marine Shelis: Reef and Shore het oosten (Houbrick. 1992: fig. 57). Houbrick (1992) Fauna of Hawaii, Section 4: Mollusca. Bernice P. Bishop Museum 64 XVIII 653 vermeldt deze soort slechts van één lokatie uit de Rode Special Publication, (4): + p. 1979. Zonation ofCerithiid in the Gulf of Zee: de Baai van Ophira nabij Sharm el Sheikh, aan de YARON, I., species Aqaba (Red Sea). — Levantina, 21: 231-235. oostkust van het Sinai schiereiland, Egypte. Merk- waardig genoeg vermelden Yaron (1979) en Ayal & Adres van de schrijver: Safriel deze soort niet in hun (1981) ecologisch georiën- National Mollusc Collection teerde werken betreffende de Cerithiidae van Sinai. Berman Building ofEvolution, Waarschijnlijk hebben zij deze kleine soort over het Department Systematics & Ecology net kleinere soort: Cerithium hoofd gezien als een nog Hebrew University & 1933. atromarginatum Dautzenberg Bouge, 11-91904 Jerusalem Israël In de HUJ-collectie bevinden zich de volgende mon- E-mail 1: [email protected] E-mail 2: [email protected] sters Cerithium uit de Sinai: van egenum omgeving van Golf van Aqaba, Jordanië, Aqaba, leg. G. Haas, 1941. 03.00 (HUJ 21324); Israël, Elat, leg. G. Haas, 1949. 05. 00 (HUJ 21326); Elat, Bet Williams, 1951.10.00 (HUJ Cerithium egenum Gould, 1849. 8 mm. Naar Kay (1979): fig. 45G..
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