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WormBase ParaSite HomeVersion: WBPS19 (WS291)-  Archive: WBPS18

About Dirofilaria immitis

The nematode Dirofilaria immitis, or dog heartworm, is an important parasite of dogs and cats that is often fatal if left untreated. Transmitted by mosquitoes in warmer climatic zones, it is spreading across southern Europe and the Americas at an alarming pace.

There is 1 alternative genome project for Dirofilaria immitis available in WormBase ParaSite: PRJEB1797

Genome Assembly & Annotation


This assembly was generated from an adult D. immitis worm sampled from the right heart and pulmonary artery of a dog that died from an unrelated cause in the municipality of Caminha, northern Portugal, November 2020.

Oxford nanopore long-reads were used to perform a complete genome assembly using Flye software (version 2.8.3). Contigs potentially belonging to D. immitis were corrected by mapping the raw reads against the assembled contigs through the Pilon software (version 1.24). For full details read Gomes-de-Sa S., et al. (2022).


The genome was annotated using Genemark-ES software (version 4.65) with self-training and default parameters. Non-coding regions belonging to rRNAs and tRNAs were also located with RNAmmer software (version 1.2) and tRNAscan-SE (version 2.0), respectively. For full details read Gomes-de-Sa S., et al. (2022).

Key Publications

Assembly Statistics

AssemblyICBAS_JMDir_1.0, GCA_024305405.1
Database VersionWBPS19
Genome Size86,813,779
Data SourceCIBIO – Research Centre in Biodiversity and Genetic Resources - InBIO Associate Laboratory
Annotation Version2022-10-WormBase

Gene counts

Coding genes9,741
Non coding genes79
Small non coding genes79
Gene transcripts9,820

Learn more about this widget in our help section

This widget has been derived from the assembly-stats code developed by the Lepbase project at the University of Edinburgh