Savigny was born at Provins. In 1798 he travelled to Egypt with the Emperor Napoleon as part of the French scientific expedition to that country, and contributed to the publication of the findings of the expedition in 1809 (Description de l'Égypte; published more fully in 1822). He wrote about the fauna in the Mediterranean Sea and the Red Sea. He is also known for proposing a theory that the mouth-parts of insects are homologous with locomotory organs (e.g. legs).
Marie Jules César Savigny
|Born||5 April 1777|
|Died||5 October 1851 (aged 74)|
|Institutions||Muséum national d'histoire naturelle|
At age 16, Savigny traveled from his home of Provins, in the department of Seine et Marne, to Paris to finish his studies. Being very interested in botany, he worked at the Muséum national d'histoire naturelle with Jean-Baptiste Lamarck and Georges Cuvier. Cuvier suggested to Napoleon that the 21-year-old Savigny should follow him as zoologist to Egypt. Savigny became responsible for studying invertebrates, while Étienne Geoffroy Saint-Hilaire took care of the vertebrates. After returning to Paris, in 1802, Savigny started to work on the large collections from Egypt, producing a number of manuscripts and plates. In 1805 he published Histoire naturelle et mythologique de l'ibis (Natural and mythological history of the ibis).
By 1817, Savigny's eyesight had deteriorated, and he had to stop working for a number of years. Between 1816 and 1820 he published the important Mémoires sur les animaux sans vertèbres (Memoires on the animals without vertebrae). After returning to work in 1822, his eyesight continued to worsen, and by 1824 he became more-or-less blind, with terrible "optical hallucinations." Victor Audouin offered to complete Savigny's work but Savigny refused to part with the original artwork. Savigny was elected member of the Academy of Science on July 30, 1821.
Aegypius is a genus of Old World vultures found in the subfamily Aegypiinae. Of the three species in the genus, only the cinereous vulture is extant.
The genus name Aegypius is a Greek word (αἰγυπιός) for 'vulture', or a bird not unlike one; Aelian describes the aegypius as "halfway between a vulture (gyps) and an eagle". Some authorities think this a good description of a lammergeier; others do not. Aegypius is the eponym of the species, whatever it was.Aplidium
Aplidium is a genus of colonial sea squirts, tunicates in the family Polyclinidae. There are about 188 species in the genus found in shallow waters around the world.Aporrectodea rosea
Aporrectodea rosea, the rosy-tipped worm, is a species of earthworm commonly found in Europe especially in Ukraine.Botrylloides leachii
Botrylloides leachii is a colonial tunicate of the genus Botrylloides. Its unique methods of propagation and regeneration make it an ideal model organism for use in biological study of development, immunology, stem cells, and regeneration.Didemnum
Didemnum is a genus of colonial tunicates in the family Didemnidae. It is the most speciose genus in the didemnid family. Species in this genus often have small calcareous spicules embedded in the tunic and form irregular or lobed colonies. Some Didemnum species, including Didemnum vexillum and Didemnum perlucidem are considered invasive species. In early 2006, Didemnum vexillum was found covering a 230 km2 area of cobble habitat in Georges Bank off the coast of New England, and is classified as an invasive species of greatest concern in coastal areas throughout Europe, New Zealand, and North America. Didemnum sp. invasions have also been recorded in Canada, the Mediterranean, and the Netherlands.Species in this genus can be found in tropical or temperate regions. Some tropical species such as Didemnum molle have photosynthetic algae in their tunics.Eisenia fetida
Eisenia fetida (older spelling: foetida), known under various common names such as redworm, brandling worm, panfish worm, trout worm, tiger worm, red wiggler worm, red Californian earthworm, etc., is a species of earthworm adapted to decaying organic material. These worms thrive in rotting vegetation, compost, and manure. They are epigean, rarely found in soil. In this trait, they resemble Lumbricus rubellus.
They have groups of bristles (called setae) on each segment that move in and out to grip nearby surfaces as the worms stretch and contract their muscles to push themselves forward or backward.
E. fetida worms are used for vermicomposting of both domestic and industrial organic waste. They are native to Europe, but have been introduced (both intentionally and unintentionally) to every other continent except Antarctica. Tiger worms are also being tested for use in a flushless toilet, currently being trialled in India, Uganda and Myanmar.Elanus
Elanus is a genus of bird of prey in the elanine kite subfamily. It was introduced by the French zoologist Jules-César Savigny in 1809 with the black-winged kite (Elanus caeruleus) as the type species. The name is from the Ancient Greek elanos for a "kite".The genus contains four species:
The first three species above were considered conspecific as subspecies of Elanus caeruleus, which has been known as the black-shouldered kite.These are white and grey raptors of open country, with black wing markings and a short square tail. They hunt by slowly quartering the habitat for rodents and other small mammals, birds and insects, sometimes hovering like a kestrel.Eulalia (annelid)
Eulalia is a genus of polychaete worms.Herdmania momus
The solitary ascidian Herdmania momus is one of the most commonly encountered species of ascidians. While commonly referred to simply as sea squirts, this name is ambiguous, as it can refer to any member of the sub-phylum Tunicata.
This solitary ascidian is sometimes referred to as the red-throated ascidian, as its two siphons are a vivid red in colour. However, most solitary ascidians that are encountered are so covered in algae that the coloration is often not visible. When found at depth the red colourations may also not be visible, as lower frequencies of light are absorbed by the layers of water above.
Like all ascidians, H. momus is a sessile filter feeder. It is commonly found attached to rocks from depths of 3–50 metres (10–160 ft).Ismene (moth)
Ismene is a genus of moths of the family Crambidae. It contains only one species, Ismene pelusia, which is found in Egypt.Lyndia
Lyndia is a genus of moths of the family Crambidae. It contains only one species, Lyndia cannarum, which is found in Egypt.Neanthes fucata
Neanthes fucata is a species of marine polychaete worm in the family Nereididae. It lives in association with a hermit crab such as Pagurus bernhardus. It occurs in the northeastern Atlantic Ocean, the North Sea and the Mediterranean Sea.Oxalis articulata
Oxalis articulata, known as pink-sorrel, pink wood sorrel, windowbox wood-sorrel, sourgrass, Netho (khatta) saag (India) is a perennial plant species in the genus Oxalis native to temperate South America. It has been introduced in Europe in gardens and is now naturalized in these areas.
The plant is susceptible to rust (disease due to the fungus Puccinia oxalidis).Potamon
Potamon is a genus of freshwater or semiterrestrial crabs mainly found from Southern Europe through the Middle East, and as far east as north-western India. The only exception is the North African P. algeriense, which also is the only potamid of mainland Africa. Twenty species are currently recognised:
Many other taxa from Indochina, originally described as species of Potamon, are now placed in other genera, such as Himalayapotamon, Beccumon, Eosamon, and Takpotamon.Protula bispiralis
Protula bispiralis, commonly known as the red fanworm or as a mopworm, is a species of marine polychaete worm in the family Serpulidae.Sabella pavonina
Sabella pavonina, commonly known as the peacock worm, is a marine polychaete worm belonging to the family Sabellidae. It occurs along the coasts of Western Europe and the Mediterranean. It is found in shallow, tidal waters with a bed of mud, sand or gravel. It is sometimes found on rocks or shipwrecks.
It is 10-25 centimetres in length. Its body is elongated and divided into 100-600 small segments. The head has two fans of feathery tentacles arising from fleshy, semi-circular lobes. The body is mostly grey-green while the tentacles are brown, red or purple with darker bands.
The worm lives inside a smooth tube of fine mud or sand particles held together with mucus. The tube stands upright with the lower end attached to stones and the upper end protruding from the sea bed. When covered by water, the worm extends its tentacles out of the tube to feed by filtering out small food particles. At low tide or when disturbed, it withdraws back into the tube.