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Ilan, M.; Vacelet, J. (1993). Kebira uteoides (Porifera, Calcarea)a recent ‘Pharetronid' sponge from coral reefs. Ophelia. 38 (2): 107-116.
Ilan, M.; Vacelet, J.
<i>Kebira uteoides</i> (Porifera, Calcarea)a recent ‘Pharetronid' sponge from coral reefs
38 (2): 107-116
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The recent "pharetronid" sponge Kebira uteoides Row, 1909 (Lelapiidae) has been rediscovered, inhabiting ceilings of small caves within coral reefs (1-3 m depth), in the northern and central Red Sea. Kebira uteoides is relatively abundant in the central Red Sea (17 specimens collected and others observed) versus low abundance (3 found) in the Gulf of Suez, and complete absence in Eilat (Northern Red Sea). This pattern may indicate a low temperature barrier for Kebira's development and that this sponge is either endemic to the northern section of the central Red Sea; or that its cryptic habitat, small size, and scarcity of studies done in more southern parts of the Red Sea, contributed to its presumed absence from that area. Most sponges are pear-shaped while wide specimens may resemble two pear-shaped individuals fused laterally. The skeletal organization conforms to the species' original description, with multispicular tracts of the "nail" spicules typical of this genus. The choanosome is densely packed with choanocyte chambers. In the Gulf of Suez, oocytes and embryos (amphiblastula type) develop during summer, and larvae might be released more than once annually. Oocytes were also observed in central Red Sea sponges during summer (the only season examined). Skeletal organization, apical position of the choanocyte's nucleus, and larval type reaffirm this species' position within the subclass Calcaronea, class Calcarea.