Justine has worked on several fields during his career.
His early research and his theses were about sperm ultrastructure in parasitic flatworms and its use for phylogeny.
He then worked on systematics of nematodes, monogeneans and other parasites, especially the species from coral reef fish.

Justine has published more than 250 papers since 1981 
 and described more than one hundred new species, which are  all parasitic animals belonging mainly to the Nematoda and Monogenea, and also Digenea, Cestoda, and Crustacea.

After 2013,  Justine undertook a research about invasive land planarians, such as Platydemus manokwari.
The papers issued from this research 
had some impact on the media, including French radios, televisions and newspapers, and newspapers and media from the USA, UK  and other countries.
Justine has worked on several fields during his career. His early research and his theses were about sperm ultrastructure in parasitic flatworms and its use for phylogeny. He then worked on systematics of nematodes, monogeneans and other parasites, especially the species from coral reef fish.
Justine has published more than 250 papers since 1981 
 and described more than one hundred new species, which are  all parasitic animals belonging mainly to the Nematoda and Monogenea, and also Digenea, Cestoda, and Crustacea.
After 2013,  Justine undertook a research about invasive land planarians, such as Platydemus manokwari. The papers issued from this research 
had some impact on the media, including French radios, televisions and newspapers, and newspapers and media from the USA, UK  and other countries.
Jean-Lou Justine