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Jean-Lou Justine

Jean-Lou Justine is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Jean-Lou Justine rather than just read about it. In short: Jean-Lou Justine (born 1955), French parasitologist and zoologist, is a professor at the National Museum of Natural History in Paris, France, and a specialist of fish parasites and invasive land planarians. Higher education and career Justine was in high school in Saint Raphaël, France, then an undergraduate student at the University of Nice (1972–1976), and at the École Normale Supérieure in Saint-Cloud after which…

Jean-Lou Justine — main illustration
Jean-Lou Justine — illustration

Key takeaways

  • Jean-Lou Justine belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Jean-Lou Justine to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Jean-Lou Justine from memory before moving on to harder problems.

Reference excerpt

Jean-Lou Justine (born 1955), French parasitologist and zoologist, is a professor at the National Museum of Natural History in Paris, France, and a specialist of fish parasites and invasive land planarians.

Higher education and career Justine was in high school in Saint Raphaël, France, then an undergraduate student at the University of Nice (1972–1976), and at the École Normale Supérieure in Saint-Cloud after which he passed the Agrégation in 1977, and finally a graduate student at the University of Montpellier. He passed his PhD in 1980 and his Doctorat d'État (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) at the University of Dakar, Senegal. He entered the National Museum of Natural History (MNHN) in 1985 to join, as Maître-Assistant (Assistant Professor) the laboratory directed at that time by Professor Alain Chabaud. He is a member of the MNHN since, and a full professor since 1995, but spent several years (2003–2011) as visiting scholar in Nouméa, New Caledonia. Justine is the curator of the parasitic worms in the National Museum of Natural History 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 of the journal Parasite since 2012.

Research

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.

Editing activities Justine has been the editor-in-chief of the Mémoires du Muséum National d'Histoire Naturelle, from 1992 to 1998, and of Zoosystema, a journal of zoology, from 1998 to 2002; both are journals published by the National Museum of Natural History in Paris. Since 2013, he is the editor-in-chief of the open-access journal Parasite, the official journal of the French Society of Parasitology. Justine is a member of the editorial board of the parasitological journals Helminthologia,

Acta Parasitologica,

and Folia Parasitologica,

and is one of the numerous Academic Editors of the megajournal PeerJ.

Justine has also been the editor of a few books, on spermatozoa, ultrastructure of flatworms and deep-sea fauna and of an International Congress Proceeding on flatworms.

Eponymous taxa

A small number of taxa names have been created to honour his name – most are parasitic worms. The genus Justinema R'kha & Durette-Desset, 1991, is a member of the trichostrongylid nematodes. Species named after him include a nematode, Philometra justinei Moravec, Ternengo & Levron, 2006, two digeneans, Hurleytrematoides justinei McNamara & Cribb, 2009 and Lepotrema justinei Bray, Cutmore & Cribb, 2018, and a parasitic copepod, Anuretes justinei Venmathi Maran, Ohtsuka & Boxshall, 2008. Among the Monogenea, Cichlidogyrus jeanloujustinei Rahmouni, Vanhove & Šimková, 2017 has been named after him, as well as four species of the genus Pseudorhabdosynochus, namely Pseudorhabdosynochus justinei Zeng & Yang, 2007, P. enitsuji Neifar & Euzet, 2007 (an anagram 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, 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 National Museum of Natural History

Illustrations

Jean-Lou Justine illustration
Jean-Lou Justine: Drawings of spermatozoa from a paper authored by Justine
Drawings of spermatozoa from a paper authored by Justine
Jean-Lou Justine: Pseudorhabdosynochus enitsuji, male and female organs
Pseudorhabdosynochus enitsuji, male and female organs

Worked examples

Example 1 — a first encounter with Jean-Lou Justine

Start with the simplest possible case. Write down what Jean-Lou Justine claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Jean-Lou Justine before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Jean-Lou Justine ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Jean-Lou Justine

In research
Jean-Lou Justine appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Jean-Lou Justine in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Jean-Lou Justine is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1955 births, 20th-century French zoologists, 21st-century French zoologists, so understanding it makes those chapters shorter.
In everyday life
Look for Jean-Lou Justine outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Jean-Lou Justine in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Jean-Lou Justine means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Jean-Lou Justine out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jean-Lou Justine in simple terms?

Jean-Lou Justine (born 1955), French parasitologist and zoologist, is a professor at the National Museum of Natural History in Paris, France, and a specialist of fish parasites and invasive land planarians. Higher education and career Justine was in high school in Saint Raphaël, France, then an und…

Why does Jean-Lou Justine matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Jean-Lou Justine?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Jean-Lou Justine.

Tags

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

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