Marine Sponge (Porifera: Demospongiae) Liosina paradoxa Thiele, 1899 from Sandspit backwater mangroves at Karachi coast, Pakistan

摘要

Marine sponge Liosina paradoxa was recently collected from pneumatophore of Avicennia marina at Sandspit backwater (66 degrees 54 ' 25 '' E, 24 degrees 49 ' 20 '' N), Karachi coast in May 2015. Identification of specimen was based on the structure of siliceous spicules scattered irregularly in mesohyl observed under light microscope and scanning electron microscope. Spicules are megascleres, entirely smooth, strongyle (length = 310-451 +/- 59.65 mu m, width = 5-8 +/- 1.8 mu m), microscleres absent. The result has been shown that the species is Liosina paradoxa (Family Dictyonellidae) first time reported from coastal area of Pakistan.