holothuroidea การใช้

The species is parasitic on holothuroidea, sea cucumbers.
In Venezuela are five classes representatives living today : Crinoidea, Asteroidea, Ophiuroidea, Echinoidea and Holothuroidea.
Extracellular endosymbionts are also represented in all four extant classes of Echinodermata ( Crinoidea, Ophiuroidea, Echinoidea, and Holothuroidea ).
Together with sea cucumbers ( Holothuroidea ), they make up the subphylum Echinozoa, which is characterized by a globoid shape without arms or projecting rays.
Th閑l was asked to classify the sea cucumbers, class Holothuroidea, that had been collected during the Challenger expedition, a British scientific expedition that investigated the deep sea and its fauna.