英语词汇“uropod”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

uropod

释义

uropod Zool.|ˈjʊərəʊpɒd|
[f. uro-² + Gr. πούς, ποδ- foot.]
Orig., any abdominal appendage of a crustacean; now spec. each of the sixth and last pair of abdominal appendages of malacostracan crustacea, which together form part of the tail fan in lobsters.
[1884A. Sedgwick tr. Claus's Elem. Text-bk. Zool. x. 454 The three posterior pairs of abdominal feet (uropoda) are well developed and often much elongated.]1893T. R. R. Stebbing Crustacea iv. 46 In Amphipoda the fourth and fifth pairs [of abdominal appendages] are more or less adapted for springing, and bear the name of uropods, or tail-feet. This name is also given to the appendages of the twentieth segment whenever they are present.1933R. H. Wolcott Animal Biol. xlii. 251 The appendages of the last abdominal segment [of the crayfish] are broad and flat and are called uropods.1974Encycl. Brit. Macropædia V. 547/1 In hermit crabs the uropods are modified into structures that help to hold the abdomen of the crab in the gastropod shell in which it lives.

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