science

Jacques Pellegrin

Jacques Pellegrin is a science 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 Jacques Pellegrin rather than just read about it. In short: Jacques Pellegrin (12 June 1873 – 12 August 1944) was a French zoologist. Biography Pellegrin was born in Paris on 12 June 1873.

Key takeaways

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

Reference excerpt

Jacques Pellegrin (12 June 1873 – 12 August 1944) was a French zoologist.

Biography Pellegrin was born in Paris on 12 June 1873. He worked under zoologist Léon Vaillant (chair of reptiles and fishes) at the Muséum national d'histoire naturelle. From 1897, Pellegrin served as préparateur at the museum. He obtained doctorates in medicine (1899) and science (1904), and in 1908 was named as an assistant director. After many missions abroad, he became sub-director of the museum in 1937, and replaced Louis Roule (1861–1942) as the chairperson of herpetology and ichthyology. He published over 600 scientific books and articles and scientifically described around 350 new species. He named a number of fishes from the family Cichlidae, such as the genera Astatoreochromis, Astatotilapia, Boulengerochromis, Lepidiolamprologus, Nanochromis and Ophthalmotilapia. Pellegrin fought with the French Resistance during World War II. He was killed by a Wehrmacht soldier using a MG 42 while in his hiding spot.

Taxa described by him See Category:Taxa named by Jacques Pellegrin

Taxa named in his honor He has the following species named in his honor:

The Clingfish Apletodon pellegrini Enteromius pellegrini (Pellegrin's barb) The Pike Cichlid Crenicichla pellegrini Ploeg, 1991 The Yellow hump eartheater cichlid Geophagus pellegrini Regan, 1912 Nemacheilus pellegrini Petrocephalus pellegrini, is a species of electric fish in the family Mormyridae, found the coastal basins between Sierra Leone and Côte d'Ivoire, part of the Sassandra River. Luciosoma pellegrinii Popta, 1905

Selected writings Contribution à l'étude anatomique, biologique et taxinomique des poissons de la famille des cichlidés, 1903 – Contribution to the anatomical, biological and taxonomic study of fish of the family Cichlidae. Les Poissons du bassin du Tchad, 1912 – Fish of the Lake Chad basin. Les poissons des eaux douces de l'Afrique du Nord Française : Maroc, Algérie, Tunisie, Sahara, 1921 – Freshwater fish of French North Africa; Morocco, Algeria, Tunisia and the Sahara. Les poissons des eaux douces de l'Afrique occidentale : du Sénégal au Niger, 1923 – Freshwater fish of western Africa; Senegal and Niger. Poissons du Chiloango et du Congo, 1928 – Fish from the Chiloango and the Congo. Les poissons des eaux douces d'Asie-Mineure, 1928 – Freshwater fish of Asia Minor Les poissons des eaux douces de Madagascar et des îles voisines (Comores, Seychelles, Mascareignes), 1933 – Freshwater fish of Madagascar and neighboring islands (Comoros, Seychelles, Mascarenes).

See also List of chairs of the National Museum of Natural History, France

Sources This article incorporates text from the German Wikipedia; sources listed as "Staatsbibliothek zu Berlin" & "Bayerische Staatsbibliothek München".

References

Worked examples

Example 1 — a first encounter with Jacques Pellegrin

Start with the simplest possible case. Write down what Jacques Pellegrin claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Jacques Pellegrin 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 Jacques Pellegrin 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 Jacques Pellegrin

In research: Jacques Pellegrin appears in science 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 Jacques Pellegrin 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: Jacques Pellegrin is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1873 births, 1944 deaths, 20th-century French male writers, so understanding it makes those chapters shorter.
In everyday life: Look for Jacques Pellegrin 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 Jacques Pellegrin in 20 minutes

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

Frequently asked questions

What is Jacques Pellegrin in simple terms?

Jacques Pellegrin (12 June 1873 – 12 August 1944) was a French zoologist. Biography Pellegrin was born in Paris on 12 June 1873.

Why does Jacques Pellegrin matter?

Because it connects several science 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 Jacques Pellegrin?

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 Jacques Pellegrin.