Michèle De Saint Laurent
   HOME

TheInfoList



OR:

Michèle de Saint Laurent (December 9, 1926 – July 11, 2003) was a French
carcinologist This is a list of notable carcinologists. A carcinologist is a scientist who studies crustaceans or is otherwise involved in carcinology (the science of crustaceans). References

{{Reflist, 24em Carcinologists, . Lists of zoologists, Carcino ...
. She spent most of her career at the ' in Paris, working on the
systematics 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: phylogenetic trees, phylogenies). Phy ...
of
decapod The Decapoda or decapods, from Ancient Greek δεκάς (''dekás''), meaning "ten", and πούς (''poús''), meaning "foot", is a large order of crustaceans within the class Malacostraca, and includes crabs, lobsters, crayfish, shrimp, and p ...
crustacean Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are traditionally a part of the subphylum Crustacea (), a large, diverse group of mainly aquatic arthrop ...
s; her major contributions were to
hermit crab Hermit crabs are anomuran Decapoda, decapod crustaceans of the superfamily (taxonomy), superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons. There are over 800 species of hermit c ...
s and
Thalassinidea Thalassinidea is the former infraorder classification of decapod crustaceans that live in burrows in muddy bottoms of the world's oceans. In Australian English, the littoral thalassinidean '' Trypaea australiensis'' is referred to as the ''yabby'' ...
, and she also co-described '' Neoglyphea'', a
living fossil A living fossil is a Deprecation, deprecated term for an extant taxon that phenotypically resembles related species known only from the fossil record. To be considered a living fossil, the fossil species must be old relative to the time of or ...
discovered in 1975.


Biography

Michèle de Saint Laurent was born on December 9, 1926, at
Fontainebleau Fontainebleau ( , , ) is a Communes of France, commune in the Functional area (France), metropolitan area of Paris, France. It is located south-southeast of the Kilometre zero#France, centre of Paris. Fontainebleau is a Subprefectures in Franc ...
, near
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
.Obituary by Jacques Forest, originally published in French as Forest (2004a), and later published in translation by Gary C. B. Poore as Forest (2004b). Her father, an army officer, retired on grounds of ill health in 1938 and moved with his family to
Plestin-les-Grèves Plestin-les-Grèves (; ) is a commune in the Côtes-d'Armor department of Brittany in north-western France. Plestin-les-Grèves is situated on the north coast of Brittany, with a sailing club in Stefflam and Loquirec. There are a few riding sc ...
in
Brittany Brittany ( ) is a peninsula, historical country and cultural area in the north-west of modern France, covering the western part of what was known as Armorica in Roman Gaul. It became an Kingdom of Brittany, independent kingdom and then a Duch ...
; he died in 1939. During the
Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, Michèle's mother concealed British airmen from the Nazi regime, for which she was convicted in 1942 by a military tribunal and sent to
Ravensbrück concentration camp Ravensbrück () was a Nazi concentration camp exclusively for women from 1939 to 1945, located in northern Germany, north of Berlin at a site near the village of Ravensbrück (part of Fürstenberg/Havel). The camp memorial's estimated figure of 1 ...
, where she died in 1944. Michèle married in 1950, taking the name Michèle Dechancé, and her daughter Odile was born later that year. She studied general biology at the
University of Paris The University of Paris (), known Metonymy, metonymically as the Sorbonne (), was the leading university in Paris, France, from 1150 to 1970, except for 1793–1806 during the French Revolution. Emerging around 1150 as a corporation associated wit ...
under Pierre-Paul Grassé, earning her ' in 1954. She started undertaking
scientific research The scientific method is an empirical method for acquiring knowledge that has been referred to while doing science since at least the 17th century. Historically, it was developed through the centuries from the ancient and medieval world. The ...
even before finishing her degree, during a term spent at the ' under
Robert Deschiens The name Robert is an ancient Germanic given name, from Proto-Germanic "fame" and "bright" (''Hrōþiberhtaz''). Compare Old Dutch ''Robrecht'' and Old High German ''Hrodebert'' (a compound of '' Hruod'' () "fame, glory, honour, praise, reno ...
, where she investigated the effect of
iron Iron is a chemical element; it has symbol Fe () and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's o ...
salts on the
molluscs Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...
that transmit
schistosomiasis Schistosomiasis, also known as snail fever, bilharzia, and Katayama fever is a neglected tropical helminthiasis, disease caused by parasitism, parasitic Schistosoma, flatworms called schistosomes. It affects both humans and animals. It affects ...
(also known as ''bilharzia'' or ''snail fever''). The resulting
paper Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, Textile, rags, poaceae, grasses, Feces#Other uses, herbivore dung, or other vegetable sources in water. Once the water is dra ...
brought her into contact with staff at the ' in Paris, where
Jacques Forest Jacques Forest (14 June 1920 – 16 February 2012) was a French carcinologist. Biography Born in Créteil on 14 June 1920, Jacques Forest grew up in Maubeuge. He served in the army for a year during the Second World War, and went on to study at ...
suggested she study the
larvae A larva (; : larvae ) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage. Animals with indirect developmental biology, development such as insects, some arachnids, amphibians, or cnidarians typical ...
of
hermit crab Hermit crabs are anomuran Decapoda, decapod crustaceans of the superfamily (taxonomy), superfamily Paguroidea that have adapted to occupy empty scavenged mollusc shells to protect their fragile exoskeletons. There are over 800 species of hermit c ...
s. From 1955 until 1960, she worked at the ' (CNRS), at their laboratory at
Banyuls-sur-Mer Banyuls-sur-Mer (; ) is a Communes of France, commune in the Pyrénées-Orientales Departments of France, department in southern France. Geography Location Banyuls-sur-Mer is located in the canton of La Côte Vermeille and in the arrondissemen ...
; thereafter, she returned to the Paris museum. In 1965, Michèle divorced, and returned to using her
maiden name When a person (traditionally the wife in many cultures) assumes the family name of their spouse, in some countries and cultures that name replaces the person's previous surname, which in the case of the wife is called the maiden name ("birth name" ...
. She retired on October 1, 1992, and split her time between her continued research activities and spending time at a house in Brittany. She had suffered for years from
hepatitis C Hepatitis C is an infectious disease caused by the hepatitis C virus (HCV) that primarily affects the liver; it is a type of viral hepatitis. During the initial infection period, people often have mild or no symptoms. Early symptoms can include ...
and contracted
liver cancer Liver cancer, also known as hepatic cancer, primary hepatic cancer, or primary hepatic malignancy, is cancer that starts in the liver. Liver cancer can be primary in which the cancer starts in the liver, or it can be liver metastasis, or secondar ...
in 2001; she died following a fall on July 11, 2003.


Work

The first major focus of Michèle de Saint Laurent's work was the
systematics 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: phylogenetic trees, phylogenies). Phy ...
of hermit crabs. In the late 1960s, she revised the family
Paguridae The Paguridae are a family of hermit crabs of the order Decapoda The Decapoda or decapods, from Ancient Greek δεκάς (''dekás''), meaning "ten", and πούς (''poús''), meaning "foot", is a large order of crustaceans within the clas ...
, erecting several new genera. She was also involved in describing the hermit crabs of the ''Calypso'' expedition from the Atlantic coast of South America, and was on board the ''Jean Charcot'' and the ''Thalassa'' during their scientific voyages. She also investigated other
decapod crustaceans The Decapoda or decapods, from Ancient Greek δεκάς (''dekás''), meaning "ten", and πούς (''poús''), meaning "foot", is a large order of crustaceans within the class Malacostraca, and includes crabs, lobsters, crayfish, shrimp, and pr ...
, particularly the
Thalassinidea Thalassinidea is the former infraorder classification of decapod crustaceans that live in burrows in muddy bottoms of the world's oceans. In Australian English, the littoral thalassinidean '' Trypaea australiensis'' is referred to as the ''yabby'' ...
. As a result of this work, she was invited in 1974 to visit the
Smithsonian Institution The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums, Education center, education and Research institute, research centers, created by the Federal government of the United States, U.S. government "for the increase a ...
to study the thalassinideans in their collections. During this work, she was given an unidentified specimen by Fenner A. Chace Jr. which had been caught by the ''Albatross'' expedition in 1908. She and Jacques Forest realised that it represented a living relative of the
Glypheoidea The Glypheoidea (containing the glypheoid lobsters), is a group of lobster-like Decapoda, decapod crustaceans which forms an important part of fossil faunas, such as the Solnhofen limestone. These fossils included taxa such as ''Glyphea'' (from wh ...
, a group previously thought to have been extinct since the
Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...
. They described the new genus together in 1975, as '' Neoglyphea''. Forest & de Saint Laurent (1975); Forest ''et al.'' (1975). De Saint Laurent's later work included a new classification of
crab Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek language, Greek), which typically have a very short projecting tail-like abdomen#Arthropoda, abdomen, usually hidden entirely under the Thorax (arthropo ...
s (involving the recognition of a new
section Section, Sectioning, or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sig ...
,
Eubrachyura Eubrachyura is a group of decapod crustaceans ( ranked as a "section") comprising the more derived crabs. It is divided into two subsections, based on the position of the genital openings in the two sexes. In the Heterotremata, the openings are o ...
), and three new superfamilies ( Axioidea, Enoplometopoidea and Retroplumoidea), as well as various works on the decapods of
hydrothermal vent Hydrothermal vents are fissures on the seabed from which geothermally heated water discharges. They are commonly found near volcanically active places, areas where tectonic plates are moving apart at mid-ocean ridges, ocean basins, and hot ...
s.


References


Citations

* * * * *


External links

* {{DEFAULTSORT:Saint Laurent, Michele 1926 births 2003 deaths 20th-century French zoologists French carcinologists People from Fontainebleau University of Paris alumni National Museum of Natural History (France) people