Surface contraction waves in amphibian eggs

M. Yoneda, Yoshitaka Kobayakawa, H. Y. Kubota, M. Sakai

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Circular waves of change in brightness , known as 'surface contraction waves' (SCW-1 and SCW-2), propagate over the animal surface of amphibian eggs at each cycle of cleavage. Movement of carbon particles attached to the egg surface indicated that SCW-1 involves expansion of the egg surface, whereas SCW-2 accompanies surface contraction. Stiffness of the cortex as measured by applying negative pressure through a micropipette increased concomitantly with the passage of SCW-2. Measurement of stiffness at two loci on the egg surface with two sets of pipettes confirmed the spatio-temporal coincidence of the wave of stiffness and SCW-2. The stiffness showed either no change or even a slight decrease on passage of SCW-1. Thus SCW-2 is a genuine wave of 'contraction', but SCW-1 can more properly be called a 'surface relaxation wave'.

Original languageEnglish
Pages (from-to)35-46
Number of pages12
JournalJournal of Cell Science
VolumeVol. 54
Publication statusPublished - Jan 1 1982
Externally publishedYes

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Amphibians
Eggs
Ovum
Carbon
Pressure

All Science Journal Classification (ASJC) codes

  • Cell Biology

Cite this

Yoneda, M., Kobayakawa, Y., Kubota, H. Y., & Sakai, M. (1982). Surface contraction waves in amphibian eggs. Journal of Cell Science, Vol. 54, 35-46.

Surface contraction waves in amphibian eggs. / Yoneda, M.; Kobayakawa, Yoshitaka; Kubota, H. Y.; Sakai, M.

In: Journal of Cell Science, Vol. Vol. 54, 01.01.1982, p. 35-46.

Research output: Contribution to journalArticle

Yoneda, M, Kobayakawa, Y, Kubota, HY & Sakai, M 1982, 'Surface contraction waves in amphibian eggs', Journal of Cell Science, vol. Vol. 54, pp. 35-46.
Yoneda M, Kobayakawa Y, Kubota HY, Sakai M. Surface contraction waves in amphibian eggs. Journal of Cell Science. 1982 Jan 1;Vol. 54:35-46.
Yoneda, M. ; Kobayakawa, Yoshitaka ; Kubota, H. Y. ; Sakai, M. / Surface contraction waves in amphibian eggs. In: Journal of Cell Science. 1982 ; Vol. Vol. 54. pp. 35-46.
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