Plasmodium dominicana

Plasmodium dominicana
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Sar
Clade: Alveolata
Phylum: Apicomplexa
Class: Aconoidasida
Order: Haemospororida
Family: Plasmodiidae
Genus: Plasmodium
Species:
P. dominicana
Binomial name
Plasmodium dominicana
Poinar, 2005

Plasmodium dominicana is an extinct parasite of the genus Plasmodium.

The species is only known from a mosquito fossil, dating from the Cenozoic era, that was found embedded in amber. The mosquito vector was identified as Culex malariager. The fossil was found in what is now the Dominican Republic.[1][2]

The vertebrate host of this species is unknown but it seems likely that it may have been a bird.

Description

Oldest mosquito fossil with Plasmodium dominicana, 15–20 million years old

The parasite was first described by Poinar in 2005.[1] It appears that it may have been a relation of Plasmodium juxtanucleare which would place it in the subgenus Bennettinia.

Four oocysts were present in the mosquito, two ruptured and two entire. They were large, measuring between 75 and 105 μm in diameter. Sporozoites were found around the ruptured oocysts as well as in the salivary glands. A possible ookinete was observed.[1]

Geographical occurrence

The fossil was found in the La Toca amber mine, Dominican Republic.

Clinical features and host pathology

The host seems likely to have been a member of the order Galliformes but this cannot be confirmed.

References

  1. 1 2 3 Poinar G Jr. (2005) Plasmodium dominicana n. sp. (Plasmodiidae: Haemospororida) from Tertiary Dominican amber. Syst. Parasitol. 61(1):47-52.
  2. John P. Roche (2016). "Did the Malaria Parasite First Evolve in the Insect Vector or the Vertebrate Host?". Entomology Today. March 18, 2016.