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They lay 25–30 eggs in a deep, tapering nest. Their eggs are small, dark and extremely thick-shelled. The hens have a habit of hiding their nests, and sharing it with other hens until large numbers of eggs have accumulated. The incubation period is 26–28 days, and the chicks are called "keets".
Dracunculus medinensis (Guinea worm, dragon worm, fiery serpent[1]) is a nematode that causes dracunculiasis, also known as guinea worm disease. [2] The disease is caused by the female [3] which, at around 80 centimetres (31 inches) in length, [4] is among the longest nematodes infecting humans. [5] The length of specimens exhibits extreme ...
Dracunculiasis, also called Guinea-worm disease, is a parasitic infection by the Guinea worm, Dracunculus medinensis. A person becomes infected by drinking water contaminated with Guinea-worm larvae that reside inside copepods (a type of small crustacean). Stomach acid digests the copepod and releases the Guinea worm, which penetrates the ...
Eradication of dracunculiasis is an ongoing program. Dracunculiasis, or Guinea worm disease, is an infection by the Guinea worm. [1] In 1986, there were an estimated 3.5 million cases of Guinea worm in 20 endemic nations in Asia and Africa. [2] Ghana alone reported 180 000 cases in 1989. The number of cases has since been reduced by more than ...
Egg incubation. A female mallard duck incubates her eggs. Egg incubation is the process by which an egg, of oviparous (egg-laying) animals, develops an embryo within the egg, after the egg's formation and ovipositional release. Egg incubation is done under favorable environmental conditions, possibly by brooding and hatching the egg.
Precociality and altriciality. Precocial species in birds and mammals are those in which the young are relatively mature and mobile from the moment of birth or hatching. They are normally nidifugous, meaning that they leave the nest shortly after birth or hatching. Altricial species are those in which the young are underdeveloped at the time of ...
List of mammalian gestation durations. This is a collection of lists of mammal gestation period estimated by experts in their fields. The mammals included are only viviparous (marsupials and placentals) as some mammals, which are monotremes (including platypuses and echidnas) lay their eggs. A marsupial has a short gestation period, typically ...
Migration of parasites in the subcutaneous tissues causing intermittent, migratory, painful, pruritic swellings is known as cutaneous larva migrans. Patches of edema appear after initial symptoms clear and are usually found on the abdomen. [3] These lesions vary in size and can be accompanied by pruritus, rash, and stabbing pain.