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Mancae are born with 6 segments and gain an additional one after their first molt. Whole woodlouse. While the broader phylogeny of the Oniscideans has not been settled, eleven infraorders / sections are agreed on with 3,937 species validated in scientific literature in 2004 [ 5 ] and 3,710 species in 2014 out of an estimated total of 5,000 ...
Louse (pl.: lice) is the common name for any member of the clade Phthiraptera, which contains nearly 5,000 species of wingless parasitic insects. Phthiraptera has variously been recognized as an order, infraorder, or a parvorder, as a result of developments in phylogenetic research. [1] [2] [3]
Argulus foliaceus, also known as the common fish louse, is a species of fish lice in the family Argulidae. [1] It is "the most common and widespread native argulid in the Palaearctic " [ 2 ] and "one of the most widespread crustacean ectoparasites of freshwater fish in the world", considering its distribution and range of hosts. [ 3 ]
It is a sea louse, a parasite living mostly on salmon, particularly on Pacific and Atlantic salmon and sea trout, but is also sometimes found on the three-spined stickleback. [2] It feeds on the mucus, skin and blood of the fish. [3] [4] Once detached, they can be blown by wind across the surface of the sea, like plankton. When they encounter a ...
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The use of a louse comb is the most effective way to detect living lice. [9] The most characteristic symptom of infestation is pruritus (itching) on the head that normally intensifies 3 to 4 weeks after the initial infestation. The bite reaction is very mild and it can be rarely seen between the hairs.
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The lobster louse was first reported in 1826 by Audoin & Milne-Edwards. [2] N. astaci has been found on lobsters inhabiting locations including Scotland, [3] Lundy Island in the Bristol Channel [4] and as far south as France and Portugal. [5] The louse possesses a narrow suctorial mouthpart to feed on host haemolymph.