katatrepsis
n. [Gr. kata, down; trepein, to turn]
1. (ARTHROPODA: Insecta)
In blastokinesis, the movement of the embryo inside the egg from one pole to another.
2. Refers to different activities in different groups of insects, i.e., dorsal to ventral, ventral to dorsal.
3. Decrease of movement during blastokinesis; see anatrepsis.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • anatrepsis — n. [Gr. anatrepein, to turn over] 1. Increase of movement during blastokinesis. 2. (ARTHROPODA: Insecta) In blastokinesis, a term used to describe the movement of the embryo inside the egg from one pole to another; refers to different activities… …   Dictionary of invertebrate zoology

  • catatrepsis — see katatrepsis …   Dictionary of invertebrate zoology

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