Breathing tube on a fruit fly's pupa, SEM

Breathing tube on a fruit fly's pupa, SEM

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Caption: Breathing tube on a fruit fly's pupa. Coloured scanning electron micrograph (SEM) of a breathing tube, or spiracle. This fruit fly is Drosophila melanogaster (wild type Oregon R), and its larva develop within a structure called a puparium, from which pupal spiracles project outward. The anterior pair of spiracles terminate in tubelike extensions, called spiracular papillae (red). The exposed ends open in narrow slits, which take in air and pass it to the developing pupa. Magnification: x470 when printed 10 centimetres high.

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Keywords: air, anatomical, anatomy, animal, animal body, anterior, biological, biology, breathing tube, coloured, developing, developmental biology, drosophila melanogaster, entomological, entomology, false-colour, false-coloured, fauna, front, fruit fly, insect, insect body, insecta, invertebrate, invertebrates, larval stage, life cycle, metamorphosis, nature, organ, oxygen, papilla, papillae, pupa, puparium, respiration, respiratory, scanning electron micrograph, scanning electron microscope, sem, spiracle, spiracles, spiracular, spiracular papilla, spiracular papillae, tube, tubes, wild type oregon r, wildlife, zoological, zoology

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