Alderina arabianensis   Menon & Nair,  1967 (Bryozoan)
Organism information awaits expert curation
Class: Gymnolaemata

Size (Zooecium): Length 530 µ; breadth 230 µ.

Encrusting. Colonies grow like flat, disc-like structures in the absence of any hindrance. Zooecia elongated, quadrangular, the distal portion of the preceding zooecium slightly overarch the proximal portion of the succeeding one. Aperture occupying three-fourth of the front, being narrowed distally. Gymnocyst present, slightly extensive proximally. Cryptocyst with spinules, the size of the spinules decrease at the distal portion of the cryptocyst. On the disto-lateral corners of the zooecium bordered at the point of origin by two triangular areas are two spines, which may be simple or branched. Ovicells hyperstomial and ribbed. Ancestrula possesses a pair of branched spines.

Synonym (s)
Alderina arabianensis Menon and Nair, 1967
Alderina arabianensis Menon and Nair, 1975

Common Name (s)
Economic Importance and Threats



• Kerala, Ernakulam Channel INDIA (Record: 04/02/1964)
• Kerala, Kochi INDIA (Record: 02/1964 -05/1964, 02/1965 - 05/1965, 02/1966 - 05/1966)
• Andhra Pradesh, Vishakhapatnam Harbour INDIA

Literature Source(s)
  • Menon, NR and Menon, NN (2006) Taxonomy of Bryozoa from the Indian EEZ. A monograph Ocean Science and Technology Cell on Marine Benthos, Kochi and Centre for Marine Living resources and Ecology, Kochi 263 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Balaji, M; Rao, MV and Rao, KS (1999) Natural resistance of ten species of catamaran grade timber to marine wood borer attack at Visakhapatnam and Kochi harbours Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 41(1&2) 96-102 Available at - NIO, Goa
  • Menon, NR and Nair, NB (1975) Indian species of malacostega (polyzoa, ectoproacta) Journal of the marine biological association of India The marine biological association of India 17(3) 553-579 Available at - NIO, Goa

Page last updated on:2011-06-16

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