Suberitidae (Demospongiae, Hadromerida) from the North Aegean Sea

Sampling in the North Aegean Sea yielded nine species of the family Suberitidae, four of which, Pseudosuberites sulphureus, P. hyalinus, Suberiles ficus and S. syringella, are new for the fauna of the Eastern Mediterranean, and three more, S. carnosus, S. domuncula, and S. massa, are new records for the fauna of the Aegean Sea. For each of the nine species comments on the systematics, as well as geographical and ecological information is given. A redescription is given of the little known species Suberites massa Nardo. A review of the distribution of all Mediterranean Suberitidae is also presented, in which it is concluded that a further three species not represented in our material have been reported from the Eastern Mediterranean, viz. Laxosuberites ectyoninus, Prosuberites longispina, and P. epiphytum. Six suberitids reported from other parts of the Mediterranean so far have not been found in the Eastern Mediterranean

Hemiasterella aristoteliana n. sp. (Porifera, Hadromerida) from the Aegean Sea with a discussion on the family Hemiasterellidae

A representative of the genus Hemiasterella Carter, 1879 was found for the first time in the Mediterranean Sea during sampling in the shallow waters of the northern Aegean Sea. The new species, H. aristoteliana, is compared with Atlantic Hemiasterella elongata Topsent, 1928. The status of the family Hemiasterellidae is discussed

SYSTEMATICS ZOOGEOGRAPHY AND ECOLOGY OF THE DEMOSPONGES (PORIFERA) OF THE CONTINENTAL SHELF IN THE NORTH AEGEAN SEA

117 SPECIES OF DEMOSPONGIAE (PORIFERA) WERE COLLECTED FROM 144 SAMPLING STATIONS, IN THE NORTH AEGEAN SEA. THREE OF THESE SPECIES, BUBARIS YIOURI, ENDECTYONAEGAENSIS AND SPONGIA SPORADHI ARE NEW FOR THE SCIENCE. 61 OF THEM ARE NEW FOR THE FAUNA OF THE EASTERN MEDITERRANEAN AND 80 ARE NEW FOR THE FAUNA OF THE NORTH AEGEAN SEA. FOR EVERY ONE OF THE EXAMINED SPECIES THE FOLLOWING SUBJECTS ARE STUDIED: THEIR GEOGRAPHICAL AND VERTICAL DISTRIBUTION, THEIR FREQUENCY, THE SUBSTRATES OF SETTLEMENT AND THEIR APPEARANCE IN THE VARIOUS BENTHIC ASSEMBLAGES. FINALLY, THE ASSOCIATION OF SOME OF THE SPONGE SPECIES WITH OTHER ANIMAL SPECIES IS ALSO EXAMINED.117 ΕΙΔΗ ΔΗΜΟΣΠΟΓΓΩΝ ΣΥΛΛΕΧΤΗΚΑΝ ΑΠΟ 144 ΣΤΑΘΜΟΥΣ ΣΤΟ ΒΟΡΕΙΟ ΑΙΓΑΙΟ. ΤΡΙΑ ΑΠΟ ΤΑ ΕΙΔΗ ΑΥΤΑ, ΤΑ BUBARIS YIOURI, ENDECTYON AEGAENSIS ΚΑΙ SPONGIA SPORADHI ΠΕΡΙΓΡΑΦΟΝΤΑΙ ΩΣ ΝΕΑ ΓΙΑ ΤΗΝ ΕΠΙΣΤΗΜΗ. 61 ΑΠΟ ΑΥΤΑ ΑΝΑΦΕΡΟΝΤΑΙ ΓΙΑ ΠΡΩΤΗ ΦΟΡΑ ΑΠΟ ΤΗΝ ΑΝΑΤΟΛΙΚΗ ΜΕΣΟΓΕΙΟ ΚΑΙ 80 ΕΙΔΗ ΓΙΑ ΠΡΩΤΗ ΦΟΡΑ ΑΠΟ ΤΟ ΒΟΡΕΙΟ ΑΙΓΑΙΟ. ΓΙΑ ΟΛΑ ΤΑ ΕΙΔΗ ΕΞΕΤΑΖΕΤΑΙ Η ΓΕΩΓΡΑΦΙΚΗ ΚΑΙ Η ΒΑΘΥΜΕΤΡΙΚΗ ΤΟΥΣ ΔΙΑΝΟΜΗ, Η ΣΥΧΝΟΤΗΤΑ ΕΜΦΑΝΙΣΗΣ ΤΟΥΣ, ΤΑ ΥΠΟΣΤΡΩΜΑΤΑ ΠΟΥ ΠΡΟΤΙΜΟΥΝ ΓΙΑ ΕΓΚΑΤΑΣΤΑΣΗ, ΚΑΙ Η ΣΥΜΜΕΤΟΧΗ ΤΟΥΣ ΣΤΙΣ ΔΙΑΦΟΡΕΣ ΒΕΝΘΙΚΕΣ ΣΥΝΕΥΡΕΣΗΣ. ΤΕΛΟΣ ΕΞΕΤΑΖΕΤΑΙ Η ΣΧΕΣΗ ΩΡΙΣΜΕΝΩΝ ΑΠΟΤΑ ΕΙΔΗ ΠΟΥ ΒΡΕΘΗΚΑΝ ΜΕ ΑΛΛΟΥΣ ΖΩΙΚΟΥΣ ΟΡΓΑΝΙΣΜΟΥΣ