Syndinium dolosum

Super Group: 
Alveolata
Phylum: 
Dinophyta
Class: 
Syndinea
Order: 
Syndiniales
Genus: 
Syndinium
Species: 
dolosum
Authority: 
Chatton 1923
Synonym(s): 
Merodinium dolosum Chatton 1923

Diagnosis

Diagnosis_Genus: These parasites were initially confounded with a putative formation of anisospores during sexual reproduction of radiolarian by Hertwig 1879 and Brandt 1885. Chatton 1923 erected a new genus (Merodinium) for all Syndinium-like parasites infesting radiolarian, then separating parasites of copepods  from the ones infecting radiolarian. This separation is based on the mode of infection (intracellular in Merodinium and in the general cavity of copepods), by the earlier fragmentation of the plasmodium in Merodinium, and the shape of their spores (fusiform in Syndinium and piriform for Merodinium). Hollande and Enjumet 1953 kept the genus name Syndinium for all parasites of radiolarian located inside the capusle, and reserved the genus name of Merodinium for all extracapsular parasites. Merodinium and Syndinium were considered as synonymous two years after by Hollande and Enjumet 1955. Delineation of these two genera, if valid, needs to be more studied. Species were mainly separated based upon the identity of their host species.
Diagnosis_Species: S. dolosum Chatton 1923. Intracapsular parasite of Sphaerozoum punctatum. First stage unknown. Sporogenesis starts inside the capsule. V-shaped chromosomes (5 in total).

Type illustration / Type locality / Type specimen

Type host: Sphaerozoum punctatum
Type locality: Banyuls sur mer

Ecology

Substrate: endozoic
Salinity: marine

Life cycle

Phases_alternance: haplontic
Generation: <1 month
Reproduction_mode: asexual
Symbiont: horizontal

Feeding behaviour

Parasitism
Osmotrophy

Observation site(s)

HOSTS

Displaying 1 - 1 of 1
Association with... Region origin Name of site In reference...
Sphaerozoum punctatum Banyuls-sur-mer
Chatton E (1923) Les péridiniens parasites des Radiolaires. C R Acad Sci Paris 177:1246-1249.