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单词 fiddler crab
释义

fiddler crab


fiddler crab

n. Any of various burrowing crabs of the genus Uca of coastal areas, the male of which has one greatly enlarged claw.

fiddler crab

n (Animals) any of various burrowing crabs of the genus Uca of American coastal regions, the males of which have one of their anterior pincer-like claws very much enlarged [C19: referring to the rapid fiddling movement of the enlarged anterior claw of the males, used to attract females]

fid′dler crab`


n. any small burrowing crab of the genus Uca, characterized by one greatly enlarged claw in the male. [1700–10, Amer.]
Thesaurus
Noun1.fiddler crab - burrowing crab of American coastal regions having one claw much enlarged in the malefiddler crab - burrowing crab of American coastal regions having one claw much enlarged in the malecrab - decapod having eyes on short stalks and a broad flattened carapace with a small abdomen folded under the thorax and pincersgenus Uca, Uca - fiddler crabs
Translations
招潮蟹

fiddle

(ˈfidl) noun1. a violin. She played the fiddle. 小提琴 小提琴2. a dishonest business arrangement. He's working a fiddle over his taxes. 欺騙行為 欺骗行为 verb1. to play a violin. He fiddled while they danced. 拉提琴 拉提琴2. (with with) to make restless, aimless movements. Stop fiddling with your pencil! (胡亂)擺弄 (胡乱)摆弄 3. to manage (money, accounts etc) dishonestly. She has been fiddling the accounts for years. 偽造作假 弄虚作假ˈfiddler noun 拉小提琴的人 拉小提琴的人fiddler crab a small crab, the male of which has an enlarged claw. 招潮蟹 招潮蟹on the fiddle dishonest. He's always on the fiddle. 不誠實 不诚实

fiddler crab


fiddler crab,

common name for small, amphibious crabscrab,
crustacean with an enlarged cephalothorax covered by a broad, flat shell called the carapace. Extending from the cephalothorax are the various appendages: five pairs of legs, the first pair bearing claws (or pincers), are attached at the sides; two eyes on short, movable
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 belonging to the genus Uca. They are characterized by a rectangular carapace (shell) and a narrow abdomen, which is flexed under the body. They are called fiddler crabs because the males have one enormous claw, held in front of the body like a fiddle. This claw often contrasts in color with the rest of the body, and is used by the male at certain times of the year to attract females in a complicated courtship display procedure, characteristically different in each species of Uca. The claw also functions to warn off intruders and to establish territories. The female Uca has two small claws on the first appendages. Some species of fiddler crabs live on sandy beaches that are somewhat protected from extreme wave action. Others live in muddy marshes and estuaries. The Uca species living on sandy beaches, such as the common Atlantic fiddler, U. pugilator, make burrows about 1 ft (30 cm) deep, just below the high tide line. The sand is carried to the surface by specialized legs of the crab, and pushed away from the entrance. Fiddler crabs are poor swimmers and rarely enter the water during their adult lives. During the spring and summer, the fiddlers remain in their burrows only during high tide periods. The entrances of the burrows are covered with sand, and the burrows contain a bubble of air, which the crabs use for respiration. When the tide ebbs, the fiddlers emerge and scurry about, collecting food in the drift lines left by the ebbing water. Both claws of the female and the smaller claw of the male are used to scoop up sand and pass the grains to the mouthparts. Certain specialized appendages (the first and second maxillipeds) have spoon-shaped setae, used to scour organic matter from the sand grains and pass it to the mouth. The sand grains are then rejected in the form of small sand balls. After mating, the female fiddler crab carries the fertilized eggs under her flexed abdomen. Certain cyclic changes occur in Uca (as well as in some other crustaceans), such as changes in pigmentation. During the day the crabs are dark; at night they are pale. Fiddler crabs are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, subphylum Crustacea, order Decapoda.

fiddler crab


  • noun

Words related to fiddler crab

noun burrowing crab of American coastal regions having one claw much enlarged in the male

Related Words

  • crab
  • genus Uca
  • Uca
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