Jean-Lou Justine (born 1955), French

parasitologist Parasitology is the study of parasites, their hosts, and the relationship between them. As a biological discipline, the scope of parasitology is not determined by the organism or environment in question but by their way of life. This means it f ...

and

zoologist Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological clas ...

, is a professor at the

National Museum of Natural History The National Museum of Natural History is a natural history museum administered by the Smithsonian Institution, located on the National Mall in Washington, D.C., United States. It has free admission and is open 364 days a year. In 2021, with 7 ...

Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

, and a specialist of

fish parasites Like humans and other animals, fish suffer from diseases and parasites. Fish defences against disease are specific and non-specific. Non-specific defences include skin and scales, as well as the mucus layer secreted by the epidermis that traps ...

and invasive

land planarians Geoplanidae is a family of flatworms known commonly as land planarians or land flatworms. These flatworms are mainly predators of other invertebrates, which they hunt, attack and capture using physical force and the adhesive and digestive proper ...

Higher education and career

Justine was in high school in Saint Raphaël,

, then an undergraduate student at the

University of Nice A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, the ...

(1972–1976), and at the

École Normale Supérieure École may refer to: * an elementary school in the French educational stages normally followed by secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing in région Île-de-France * École, Savoi ...

Saint-Cloud Saint-Cloud () is a commune in the western suburbs of Paris, France, from the centre of Paris. Like other communes of Hauts-de-Seine such as Marnes-la-Coquette, Neuilly-sur-Seine and Vaucresson, Saint-Cloud is one of France's wealthiest towns ...

after which he passed the ''

Agrégation In France, the ''agrégation'' () is a competitive examination for civil service in the French public education system. Candidates for the examination, or ''agrégatifs'', become ''agrégés'' once they are admitted to the position of ''professe ...

'' in 1977, and finally a graduate student at the

University of Montpellier The University of Montpellier (french: Université de Montpellier) is a public university, public research university located in Montpellier, in south-east of France. Established in 1220, the University of Montpellier is one of the oldest univ ...

. He passed his PhD in 1980 and his ''

Doctorat d'État Habilitation is the highest university degree, or the procedure by which it is achieved, in many European countries. The candidate fulfills a university's set criteria of excellence in research, teaching and further education, usually including a ...

'' (State doctorate) in 1985, both in the University of Montpellier, under the supervision of Professors Xavier Mattei and Louis Euzet. From 1978 to 1985, Justine was ''Assistant'' then ''Maître-Assistant'' (

Assistant Professor Assistant Professor is an academic rank just below the rank of an associate professor used in universities or colleges, mainly in the United States and Canada. Overview This position is generally taken after earning a doctoral degree and general ...

) at the

University of Dakar Cheikh Anta Diop University (french: Université Cheikh Anta Diop or UCAD), also known as the Cheikh Anta Diop University of Dakar, is a university in Dakar, Senegal. It is named after the Senegalese physicist, historian and anthropologist Cheikh ...

Senegal Senegal,; Wolof: ''Senegaal''; Pulaar: 𞤅𞤫𞤲𞤫𞤺𞤢𞥄𞤤𞤭 (Senegaali); Arabic: السنغال ''As-Sinighal'') officially the Republic of Senegal,; Wolof: ''Réewum Senegaal''; Pulaar : 𞤈𞤫𞤲𞤣𞤢𞥄𞤲𞤣𞤭 � ...

. He entered the

(MNHN) in 1985 to join, as ''Maître-Assistant'' (Assistant Professor) the laboratory directed at that time by Professor

Alain Chabaud Alain Chabaud (13 March 1923 – 11 March 2013) was a French parasitologist, mainly a specialist of nematodes and sporozoa. He was the Director of the Laboratoire de Zoologie (Vers) in the Muséum National d'Histoire Naturelle in Paris from 1960 t ...

. He is a member of the MNHN since, and a full

professor Professor (commonly abbreviated as Prof.) is an Academy, academic rank at university, universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who pr ...

since 1995, but spent several years (2003–2011) as

visiting scholar In academia, a visiting scholar, visiting researcher, visiting fellow, visiting lecturer, or visiting professor is a scholar from an institution who visits a host university to teach, lecture, or perform research on a topic for which the visitor ...

Nouméa Nouméa () is the capital and largest city of the French special collectivity of New Caledonia and is also the largest francophone city in Oceania. It is situated on a peninsula in the south of New Caledonia's main island, Grande Terre, a ...

New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).svg , map_alt = Location of New Caledonia , map_caption = Location of New Caledonia , mapsize = 290px , subdivision_type = Sovereign st ...

. Justine is the

curator A curator (from la, cura, meaning "to take care") is a manager or overseer. When working with cultural organizations, a curator is typically a "collections curator" or an "exhibitions curator", and has multifaceted tasks dependent on the parti ...

of the parasitic

worm Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always). Worms vary in size from microscopic to over in length for marine polychaete wor ...

s in the

in Paris, France, and, since 2013, a deputy-director the Institute of Systematics, Evolution and Biodiversity (ISYEB), one of the largest units in the MNHN. He is also a member of the EASIN (European Alien Species Information Network) Editorial Board since 2015 and the

editor-in-chief An editor-in-chief (EIC), also known as lead editor or chief editor, is a publication's editorial leader who has final responsibility for its operations and policies. The highest-ranking editor of a publication may also be titled editor, managing ...

of the journal ''

Parasite Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has ...

'' since 2012.

Research

Spermatozoa of Chimaericola leptogaster - coloured background

Justine has worked on several fields during his career. His early research and his theses were about

sperm Sperm is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction (forms in which there is a larger, female reproductive cell and a smaller, male one). Animals produce motile sperm with a tail known as a flagellum, whi ...

ultrastructure Ultrastructure (or ultra-structure) is the architecture of cells and biomaterials that is visible at higher magnifications than found on a standard optical light microscope. This traditionally meant the resolution and magnification range of a co ...

in parasitic

flatworms The flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek πλατύ, ''platy'', meaning "flat" and ἕλμινς (root: ἑλμινθ-), ''helminth-'', meaning "worm") are a phylum of relatively simple bilaterian, unsegment ...

and its use for

phylogeny A phylogenetic tree (also phylogeny or evolutionary tree Felsenstein J. (2004). ''Inferring Phylogenies'' Sinauer Associates: Sunderland, MA.) is a branching diagram or a tree showing the evolutionary relationships among various biological spec ...

. He then worked on

systematics Biological systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: cladograms, phylogenetic tre ...

nematodes The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broa ...

monogenea Monogeneans are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they have both male and female reprod ...

ns and other

parasites Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted structurally to this way of lif ...

, especially the species from

coral reef fish Coral reef fish are fish which live amongst or in close relation to coral reefs. Coral reefs form complex ecosystems with tremendous biodiversity. Among the myriad inhabitants, the fish stand out as colourful and interesting to watch. Hundreds ...

. 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 The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broa ...

and

Monogenea Monogeneans are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they have both male and female reprod ...

, and also

Digenea Digenea (Gr. ''Dis'' – double, ''Genos'' – race) is a class of trematodes in the Platyhelminthes phylum, consisting of parasitic flatworms (known as ''flukes'') with a syncytial tegument and, usually, two suckers, one ventral and one oral. ...

Cestoda Cestoda is a class of parasitic worms in the flatworm phylum (Platyhelminthes). Most of the species—and the best-known—are those in the subclass Eucestoda; they are ribbon-like worms as adults, known as tapeworms. Their bodies consist of man ...

, and

Crustacea Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean gro ...

. After 2013, Justine undertook a research about invasive

, such as ''

Platydemus manokwari ''Platydemus manokwari'', also known as the New Guinea flatworm, is a species of large predatory land flatworm. Native to New Guinea, it has been accidentally introduced to the soil of many countries, including the United States. It was als ...

''. 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.

Editing activities

Justine has been the

of the ''Mémoires du Muséum National d’Histoire Naturelle'', from 1992 to 1998, and of ''

Zoosystema ''Zoosystema'' is a peer-reviewed scientific journal published by the National Museum of Natural History, France (''Muséum national d'histoire naturelle''), covering research in animal biodiversity. Specific subjects within the journal's scope in ...

'', a journal of zoology, from 1998 to 2002; both are journals published by the

in Paris. Since 2013, he is the

of the

open-access Open access (OA) is a set of principles and a range of practices through which research outputs are distributed online, free of access charges or other barriers. With open access strictly defined (according to the 2001 definition), or libre op ...

journal ''

'', the official journal of the French Society of Parasitology. Justine is a member of the

editorial board The editorial board is a group of experts, usually at a publication, who dictate the tone and direction the publication's editorial policy will take. Mass media At a newspaper, the editorial board usually consists of the editorial page editor, a ...

of the parasitological journals ''Helminthologia'', ''Acta Parasitologica'', and ''Folia Parasitologica'', and is one of the numerous Academic Editors of the megajournal ''

PeerJ ''PeerJ'' is an open access peer-reviewed scientific mega journal covering research in the biological and medical sciences. It is published by a company of the same name that was co-founded by CEO Jason Hoyt (formerly at Mendeley) and publisher Pet ...

''. Justine has also been the editor of a few books, on

spermatozoa A spermatozoon (; also spelled spermatozoön; ; ) is a motile sperm cell, or moving form of the haploid cell that is the male gamete. A spermatozoon joins an ovum to form a zygote. (A zygote is a single cell, with a complete set of chromosomes, ...

,Jamieson, Barrie G. M., Justine, Jean-Lou, & Ausió, Juan (Eds)(1995). Advances in Spermatozoal Phylogeny and Taxonomy. Mémoires du Muséum National d'Histoire Naturelle, 166, 564 pp. Paris: Éditions du Muséum.
(details)
/ref>

and

deep-sea The deep sea is broadly defined as the ocean depth where light begins to fade, at an approximate depth of 200 metres (656 feet) or the point of transition from continental shelves to continental slopes. Conditions within the deep sea are a combin ...

fauna Richer de Forges, Bertrand & Justine Jean-Lou (eds) 2006 — Tropical Deep-Sea Benthos volume 24. Muséum national d'Histoire naturelle, Paris, 417 p. (Mémoires du Muséum national d'Histoire naturelle ; volume 193).
(details)
/ref> and of an International Congress Proceeding on flatworms.

Eponymous taxa

A small number of

taxa In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular nam ...

names have been created to honour his name – most are parasitic worms. The

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

'' Justinema'' R’kha & Durette-Desset, 1991,R'Kha, S., & Durette-Desset, M.-C. (1990). Trois espèces (dont deux nouvelles) de Nématodes Trichostrongyloïdes coparasites de ''Proechimys semispinosus'' en Colombie: description de ''Justinema'' n. gen. Bulletin du Muséum National d'Histoire Naturelle, Paris, 4ème série (Zoologie), 12, 555-562. is a member of the trichostrongylid

Species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

named after him include a

nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhab ...

, '' Philometra justinei'' Moravec, Ternengo & Levron, 2006, two

digenea Digenea (Gr. ''Dis'' – double, ''Genos'' – race) is a class of trematodes in the Platyhelminthes phylum, consisting of parasitic flatworms (known as ''flukes'') with a syncytial tegument and, usually, two suckers, one ventral and one oral. ...

ns, '' Hurleytrematoides justinei'' McNamara & Cribb, 2009 and ''

Lepotrema justinei ''Lepotrema justinei'' is a species of lepocreadiid digenean parasitic in the intestine of marine fish. It was described in 2018. This species was not characterised by molecular means but was distinguished from other species of the genus ''Lepo ...

'' Bray, Cutmore & Cribb, 2018, and a parasitic

copepod Copepods (; meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat (ecology), habitat. Some species are planktonic (inhabiting sea waters), some are benthos, benthic (living on the ocean floor) ...

, '' Anuretes justinei'' Venmathi Maran, Ohtsuka & Boxshall, 2008. Among the

, ''

Cichlidogyrus jeanloujustinei ''Cichlidogyrus jeanloujustinei'' is a species of monopisthocotylean monogenean in the family Dactylogyridae (or Ancyrocephalidae according to certain classifications). It is a parasite of the gills of the fish '' Eretmodus marksmithi'' (Perci ...

'' Rahmouni, Vanhove & Šimková, 2017 has been named after him, as well as four species of the genus ''

Pseudorhabdosynochus ''Pseudorhabdosynochus'' is a genus of monopisthocotylean monogeneans, included in the family Diplectanidae. The type-species of the genus is ''Pseudorhabdosynochus epinepheli'' ( Yamaguti, 1938). The genus includes more than 80 species, which a ...

'', namely '' Pseudorhabdosynochus justinei'' Zeng & Yang, 2007, '' P. enitsuji'' Neifar & Euzet, 2007 (an

anagram An anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. For example, the word ''anagram'' itself can be rearranged into ''nag a ram'', also the word ...

of ''justinei''), '' P. jeanloui'' Knoff, Cohen, Cárdenas, Cárdenas-Callirgos & Gomes, 2015, and '' P. justinella'' Kritsky, Bakenhaster & Adams, 2015. '' Solenofilomorpha justinei'' Nilsson, Wallberg & Jondelius 2011, an

Acoela Acoela, or the acoels, is an order of small and simple invertebrates in the subphylum Acoelomorpha of phylum Xenacoelomorpha, a deep branching bilaterian group of animals, which resemble flatworms. Historically they were treated as an order of ...

, is not a parasite.

References

External links

Personal website of Jean-Lou Justine

Conference on invasive land planarians in France
20 March 2018, by Jean-Lou Justine (in French) on the website of the

{{DEFAULTSORT:Justine, Jean-Lou Living people 1955 births French parasitologists French taxonomists People from Saint-Quentin, Aisne University of Montpellier alumni Côte d'Azur University alumni 20th-century French zoologists 21st-century French zoologists National Museum of Natural History (France) people