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词汇 altricial
释义

Definition of altricial in English:

altricial

adjective əlˈtrɪʃ(ə)lalˈtriSHəl
Zoology
  • 1(of a young bird or other animal) hatched or born in an undeveloped state and requiring care and feeding by the parents.

    (幼鸟等)晚成雏的。亦称NIDICOLOUS . 常与PRECOCIAL 相对

    Often contrasted with precocial
    Also called nidicolous
    Example sentencesExamples
    • The altricial chicks are fed primarily insects, beetle larvae, grasshoppers, spiders and small lizards.
    • Their altricial cubs are born in mid-winter, with their eyes closed, and weighing only about 0.6 kg.
    • In addition, the amount of food altricial nestlings receive from their parents varies depending on how much food is in the environment.
    • The altricial young are fed semi-digested fish by both parents.
    • After hatching, the altricial nestlings are brooded for 1 to 2 weeks depending on the weather.
    1. 1.1 (of a particular species) having altricial young.
      (某特定物种)养育晚成雏的
      Example sentencesExamples
      • In altricial bird species, parents need to provide their growing nestlings with food to prevent starvation, ensure proper development, and minimize any negative effects of a poor start in life.
      • Moreover, chicks of precocial species generally require less parental care than those of altricial species.
      • In altricial birds the chicks depend entirely on their parents for food and protection.
      • In altricial species, the parents of hungry nestlings may be helped in feeding and guarding their young by other adult birds who have not bred that year.
      • The brown pelican produces a relatively large chick at a relatively high cost compared to other, smaller altricial species.

Origin

Late 19th century: from Latin altrix, altric-, feminine of altor 'nourisher', from alere 'nourish'.

Definition of altricial in US English:

altricial

adjectivealˈtriSHəl
Zoology
  • 1(of a young bird or other animal) hatched or born in an undeveloped state and requiring care and feeding by the parents.

    (幼鸟等)晚成雏的。亦称NIDICOLOUS . 常与PRECOCIAL 相对

    Also called nidicolous
    Often contrasted with precocial
    Example sentencesExamples
    • The altricial young are fed semi-digested fish by both parents.
    • After hatching, the altricial nestlings are brooded for 1 to 2 weeks depending on the weather.
    • In addition, the amount of food altricial nestlings receive from their parents varies depending on how much food is in the environment.
    • Their altricial cubs are born in mid-winter, with their eyes closed, and weighing only about 0.6 kg.
    • The altricial chicks are fed primarily insects, beetle larvae, grasshoppers, spiders and small lizards.
    1. 1.1 (of a particular species) having altricial young.
      (某特定物种)养育晚成雏的
      Example sentencesExamples
      • Moreover, chicks of precocial species generally require less parental care than those of altricial species.
      • In altricial birds the chicks depend entirely on their parents for food and protection.
      • In altricial bird species, parents need to provide their growing nestlings with food to prevent starvation, ensure proper development, and minimize any negative effects of a poor start in life.
      • In altricial species, the parents of hungry nestlings may be helped in feeding and guarding their young by other adult birds who have not bred that year.
      • The brown pelican produces a relatively large chick at a relatively high cost compared to other, smaller altricial species.

Origin

Late 19th century: from Latin altrix, altric-, feminine of altor ‘nourisher’, from alere ‘nourish’.

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