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|Haloquadratum walsbyi||Sitta europaea caesia||Caloboletus calopus||♂Aphyocharax anisitsi|
|♀Brachypelma smithi||Hippopotamus amphibius||Euphorbia leuconeura||Sarcophaga sp. with Tipulidae|
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Ua colaboraçon antre l Biquispeces i ZooKeys (ambora an anglés) fui anunciada. PhytoKeys juntou-se tamien a la colaboraçon an nobembre de 2010. Las eimaiges de speces de l ZooKeys i PhytoKeys seran ambiadas ne l Wikimedia Commons i outelizadas ne l Biquispeces.
Francesco Redi was an Italian entomologist, parasitologist and toxicologist, sometimes referred to as the "founder of experimental biology" and the "father of modern parasitology". Having a doctoral degree and in both medicine and philosophy from the University of Pisa at the age of 21, he worked in various cities of Italy.
Redi is best known for his series of experiments, published in 1668 as Esperienze Intorno alla Generazione degli Insetti ("Experiments on the Generation of Insects"), which is regarded as his masterpiece and a milestone in the history of modern science. The book is one of the first steps in refuting "spontaneous generation", a theory also known as "Aristotelian abiogenesis". At the time, prevailing theory was that maggots arose spontaneously from rotting meat, which Redi was able to disprove. In an experiment, He used samples of rotting meat that were either fully exposed to the air, partially exposed to the air, or not exposed to air at all. Redi showed that both fully and partially exposed rotting meat developed fly maggots, whereas rotting meat that was not exposed to air did not develop maggots. This discovery completely changed the way people viewed the decomposition of organisms and prompted further investigations into insect life cycles and into entomology in general. It is also an early example of forensic entomology.
In Esperienze Intorno alla Generazione degli Insetti Redi was the first to describe ectoparasites, such as lice (Phthiraptera), fleas (Siphonaptera), and some mites (Acari). His next treatise in 1684, titled Osservazioni intorno agli animali viventi che si trovano negli animali viventi ("Observations on Living Animals, that are in Living Animals") recorded the descriptions and the illustrations of more than 100 parasites. In it he also differentiates the earthworm (generally regarded as a helminth) and Ascaris lumbricoides, the human roundworm. An important innovation from the book is his experiments in chemotherapy in which he employed what is now called "scientific control", the basis of experimental design in modern biological research. Perhaps, his most significant observation was that parasites produce eggs and develop from them, which contradicted the prevailing opinion that they are produced spontaneously. Altogether he is known to have described some 180 species of parasites.See also: Distinguished authors of previous months.
Species of the month
Decim Periodical Cicada
Some facts on this insect:
Body length: 28-29 mm.
Eggs deposited by the female: 400-600.
Male song: High-pitched call resembling "weeeee-whoa" or "Pharaoh".
Range: Canada and the United States.
Life-span: 17 years.
First described: By Swedish naturalist Carolus Linnaeus in 1758, who originally named it Cicada septendecim.
See also: Species of previous months
Endangered species of the month
Lord Howe Island stick insect
Some facts about this species:
Total length: 130–140 mm
Weight: 25 grams
Distribution: It was thought to be extinct by 1920, only to be rediscovered in 2001. It is extinct in its largest habitat, Lord Howe Island (Tasman Sea, Pacific Ocean). It has been called "the rarest insect in the world", as the rediscovered population consisted of a mere 24 individuals living on the small islet of Ball's Pyramid (20 km southeast of Lord Howe Island, measuring 1,100 metres in length and 300 metres across).
Surviving number: Less than 15,000 specimens, mainly in captivity.
Conservation status: Critically Endangered (IUCN 3.1).
First described: As Karabidion australe by the French botanist, zoologist and entomologist Xavier Montrouzier in "Essai sur la faune del'ile de Woodlark ou Moiou", Annales De La Societé D'Agriculture De Lyon, 1885.
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