Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Datasheet

Leishmania

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Datasheet

Leishmania

Summary

  • Last modified
  • 14 July 2018
  • Datasheet Type(s)
  • Invasive Species
  • Preferred Scientific Name
  • Leishmania
  • Taxonomic Tree
  • Domain: Eukaryota
  •   Kingdom: Protista
  •     Phylum: Protozoa
  •       Subphylum: Sarcomastigophora
  •         Order: Kinetoplastida
  • There are no pictures available for this datasheet

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    Compendia
    CAB International
    Wallingford
    Oxfordshire
    OX10 8DE
    UK
    compend@cabi.org

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Pictures

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PictureTitleCaptionCopyright
Amastigotes of Leishmania infantum in a macrophage from a spleen aspirate of an infected dog.
TitleAmastigotes of Leishmania infantum
CaptionAmastigotes of Leishmania infantum in a macrophage from a spleen aspirate of an infected dog.
Copyright©Gad Baneth-2011
Amastigotes of Leishmania infantum in a macrophage from a spleen aspirate of an infected dog.
Amastigotes of Leishmania infantumAmastigotes of Leishmania infantum in a macrophage from a spleen aspirate of an infected dog.©Gad Baneth-2011
Promastigote of Leishmania infantum grown in culture.
TitlePromastigote of Leishmania infantum
CaptionPromastigote of Leishmania infantum grown in culture.
Copyright©Gad Baneth-2010
Promastigote of Leishmania infantum grown in culture.
Promastigote of Leishmania infantumPromastigote of Leishmania infantum grown in culture.©Gad Baneth-2010

Identity

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Preferred Scientific Name

  • Leishmania

Taxonomic Tree

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  • Domain: Eukaryota
  •     Kingdom: Protista
  •         Phylum: Protozoa
  •             Subphylum: Sarcomastigophora
  •                 Order: Kinetoplastida
  •                     Family: Trypanosomatidae
  •                         Genus: Leishmania

Pathogen Characteristics

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Leishmaniosis is caused by diphasic protozoans of the genus Leishmania in the class Kinetoplasta and family Trypanosomatidae. The genus Leishmania is divided into the subgenera Leishmania and Viannia based on the differences in the location of parasite development within the sandfly gut. Organisms of the Viannia subgenus such as Leishmania braziliensis replicate in the hindgut, in contrast to the midgut replication characteristic of other Leishmania species.

In vertebrate hosts, Leishmania is found in macrophages in its intracellular form, the amastigote. Amastigotes are ovoid or round, 2.5 to 5 μm long and 1.5 to 2 μm wide (See picture: Amastigotes of Leishmania infantum). They contain, in addition to a nucleus, a rod-shape, basophilic staining kinetoplast. Amastigotes multiply by binary fission, then subsequently rupture out of the macrophage to infect new cells. In contrast, the motile promastigotes found in sandflies are longer, 15-30 µm in length and 4-5 µm in width, extracellular and contain a prominent posterior flagella, nucleus and kinetoplast (See picture: Promastigote of Leishmania infantum).

Vectors and Intermediate Hosts

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VectorSourceReferenceGroupDistribution
LutzomyiaInsect
PhlebotomusInsect