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Sagitta siamensis, a new benthoplanktonic Chaetognatha living in marine meadows of the Andaman Sea, Thailand
Casanova, J.-P.; Goto, T. (1997). Sagitta siamensis, a new benthoplanktonic Chaetognatha living in marine meadows of the Andaman Sea, Thailand. Cah. Biol. Mar. 38(1): 51-58
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Casanova, J.-P.
  • Goto, T.

Abstract
    A new benthoplanktonic chaetognath, Sagitta siamensis, is described from near-shore waters of Phuket Island (Thailand), in the Andaman Sea, where it lives among submerged vegetation. It is related to species of the "hispida" group. In the laboratory, specimens have been observed swimming in the sea water but also sometimes adhering to the wall of the jars, and the eggs are benthic and attached on the substratum. Their fins are particularly thick and provided with clusters of probably adhesive cells on their ventral side and edges.This is the first mention of such fins in the genus Sagitta but the adhesive apparatus do not resemble that found in the benthic family Spadellidae and is less evolved. A review of the morphological characteristics of the species of the "hispida" group is done as well as their biogeography.

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