Nematopsis messor     (Protozoan)
Organism information awaits expert curation
Taxonomy
Kingdom:Chromista
Phylum:Myzozoa
Class: Conoidasida
Order:Eugregarinorida
Family:Porosporidae

Description
Sporadins: Biassociative; association caudofrontal; color milky-white. Syzygy early, linear.
Primites: Protomerite shape hemispherical, wider than long, maximum width at posterior end; transparent lens-shaped structure present at anterior end; epicyte uniformly thick, striated; endocyte granular. Septum circular, convex toward deutomerite; constriction at septum inconspicuous. Deutomerite ovoid, narrow behind septum, gradually widens caudally, posterior end broadly rounded; maximum width in posterior half; epicyte uniformly thick; endocyte granular. Nucleus spherical, faintly visible in fresh sporadins, variable in position; endosome single, spherical.
Satellites: Lengths on average slightly shorter than primites. Protomerite shape hemispherical, wider than long; epicyte uniformly thick, striated; endocyte granular with transparent lens-shaped structure at anterior end. Septum similar to primite. Deutomerite ovoid, narrow behind septum, gradually widens caudally, posterior end broadly rounded; maximum width at posterior half. Nucleus and endosome similar to primate.

Gametocysts: Shape spherical; color milky white. Cyst wall double; epicyst thick, hyaline, width uneven, 6.6-11.5; endocyst thin, width uniformly even, 1.6.
Gymnospores: Shape spherical; diameter 4.5-5.3; uninucleated bodies arranged radially in rosette
pattern around central, hyaline cytoplasm.
Trophozoites: Development extracellular. Smallest observed trophozoite has a hemispherical protomerite and ovoid deutomerite. In an association measuring 129.6 long, the primate measured 70.7 by 37.1 and satellite 58.6 by 37.1.

Type host: Metapograpsus messor (Forskal)
Site of infection: Intestine


Synonym (s)

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Rocky, Sandy, Coastal

Biogeography


• Kerala, Kadalundi Estuary INDIA (Record: 00/02/1988, 00/03/1988, 00/11/1988, 00/12/1988, 00/10/1089-00/12/1989, 00/01/1990-00/04/1990)

Literature Source(s)
  • Prasadan, PK and Janardanan, KP (2001) Three new species of gregarines (Apicomplexa: Sporozoea: Porosporidae) in the estuarine crabs from Kerala, India Acta Protozoologica 40(4) 303-309 Available at - http://www.nencki.gov.pl/pdf/ap/ap581.pdf
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Integrated Taxonomic Information System (ITIS) Available at - http://www.itis.gov.


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