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词汇 Gastrotricha
释义

Definition of Gastrotricha in English:

Gastrotricha

plural noun ˌɡastrəˈtrʌɪkəɡasˈträtrikə
Zoology
  • A small phylum of minute aquatic wormlike animals that bear bristles and cilia. They are thought to be related to the nematode worms and rotifers.

    〔动〕腹毛动物门

    Example sentencesExamples
    • With the two examples from Nematomorpha and Gastrotricha I aimed to exemplify these interconnections and show gaps in knowledge that are mainly due to the evaluation of nematomorphs and gastrotrichs as ‘lesser known groups.’
    • Furthermore they have several plesiomorphic characters, such as a myoepitheal pharyngeal bulb, comparable to the other Cycloneuralia, especially the Nematoda and Gastrotricha.
    • These are the horsehair worms or Nematomorpha and the Gastrotricha.
    • The name Gastrotricha derives from the possession of ventral locomotory cilia which are covered by cuticle, a unique feature among metazoan animals.
    • They concluded that Gastrotricha is the sister-taxon of a monophyletic clade comprising Nematoda, Nematomorpha, Priapulida, Kinorhyncha and Loricifera.

Derivatives

  • gastrotrich

  • noun ˈɡastrətrɪk
    Zoology
    • Furthermore, the micrognathozoans have two rows of multiciliated cells that forms a locomotory organ, similar to that in some gastrotrichs and interstitial annelids.
      Example sentencesExamples
      • With the two examples from Nematomorpha and Gastrotricha I aimed to exemplify these interconnections and show gaps in knowledge that are mainly due to the evaluation of nematomorphs and gastrotrichs as ‘lesser known groups.’
      • There are also a number of differences, however, perhaps most important of which is the observation of a clade consisting of the gastrotrichs plus platyheminthes that is basal to all other lophotrochozoan taxa.
      • The body cavity nature varies considerably in these phyla, from complete absence of body cavity in the entoprocts and gastrotrichs to the priapulid body cavity that is actually interpreted as a true coelom by some authors.
      • A gastrotrich (meaning ‘hairy stomach’) uses myriad hairs over its head and belly to glide, wriggle, and squirm, looking for food.

Origin

Modern Latin (plural), from Greek gastēr, gastr- 'stomach' + thrix, trikh- 'hair'.

Definition of Gastrotricha in US English:

Gastrotricha

plural nounɡasˈträtrikə
Zoology
  • A small phylum of minute aquatic wormlike animals that bear bristles and cilia. They are thought to be related to the nematode worms and rotifers.

    〔动〕腹毛动物门

    Example sentencesExamples
    • The name Gastrotricha derives from the possession of ventral locomotory cilia which are covered by cuticle, a unique feature among metazoan animals.
    • Furthermore they have several plesiomorphic characters, such as a myoepitheal pharyngeal bulb, comparable to the other Cycloneuralia, especially the Nematoda and Gastrotricha.
    • These are the horsehair worms or Nematomorpha and the Gastrotricha.
    • They concluded that Gastrotricha is the sister-taxon of a monophyletic clade comprising Nematoda, Nematomorpha, Priapulida, Kinorhyncha and Loricifera.
    • With the two examples from Nematomorpha and Gastrotricha I aimed to exemplify these interconnections and show gaps in knowledge that are mainly due to the evaluation of nematomorphs and gastrotrichs as ‘lesser known groups.’

Origin

Modern Latin (plural), from Greek gastēr, gastr- ‘stomach’ + thrix, trikh- ‘hair’.

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