Michel, Kurt; Gundlach, Heinz (2021). CIL:39226, Psophus stridulus, spermatocyte. In Cell Image Library. UC San Diego Library Digital Collections. Dataset. https://doi.org/10.6075/J0DV1J7X

Time lapse movie of meiotic metaphase and anaphase in spermatocytes of the Locust Psophus stridulus. Two sequences are shown, each continuing through telophase to the start of cytokinesis. In addition to the squat meiotic chromosomes, the spindles are clearly visible.
This is a historic movie made in the early 40s by Kurt Michel of the Zeiss company in Jena using Zernike's newly invented phase contrast microscope.
Despite its early date, the movie and the others in the group remain some of the clearest examples of chromosome behavior during meiosis.

• 2021

• Gundlach, Heinz
• Michel, Kurt

The movie was originally recorded on 35mm film, and later transferred to CD format. The text at the beginning of the movie translates approximately as follows:

Meiosis division I
Metaphase ( ca. 9-10 hr)
and
Anaphase (ca. 1-2 hr)
-----------------------
Based on the duration, it appears the movie represents an increased speed of ca. 50x.

See also:
Michel, K. (1941): Die Darstellung von Chromosomen mittels des Phasenkontrastverfahrens. Die Naturwissenschaften 29, 61-62
Michel, K. (1958): Die Reifeteilungen (Meiose) bei der Spermatogenese der Schnarrheuschrecke (Psophus stridulus l.) Institut für den Wissenschaftlichen Film, Göttingen

Preparation: living tissue
Relation to intact cell: whole mounted tissue
Item type: film
Imaging mode: phase contrast microscopy
Parameter imaged: elastic scattering of photons
Source of contrast: differences in amount of elastic light scattering
Visualization methods: visualization of contiguous regions
Data qualification: Processed

• Cell Image Library Group ID: 10170

• Psophus stridulus

• Nuclear chromosome
• Spermatocyte

• Spermatogenesis

• data
• image
• video

• No linguistic content; Not applicable

Samplenumber: 39226

Doi: https://doi.org/10.6075/J0DV1J7X

Source data

• Source Record in the Cell Image Library: https://doi.org/10.7295/W9CIL39226

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Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)

2022-08-12