Michel, Kurt; Gundlach, Heinz (2021). CIL:39225, Psophus stridulus, spermatocyte. In Cell Image Library. UC San Diego Library Digital Collections. Dataset. https://doi.org/10.6075/J0K073MP

Time lapse movie of the prophase stage during meiosis I in spermatocytes of the Locust Psophus stridulus.
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. Several sequences are shown, some proceeding to metaphase.
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:
From the microlaboratory of the Carl Zeiss Company, Jena
Director: Dr. K. Michel
Meiosis in spermatogenesis in the locust Psophus stridulus L
Scientific direction, production and filming by Dr. K. Michel
Recorded with the phase contrast procedure of Zernike.
Meiosis division I
Prophase
(Duration ca. 2 hr)

IWF is the logo of The Institut fur den wissenscaftliche Film (Institute for scientific film located in Goettingen)
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Based on the 2 hr real time 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: 39225

Doi: https://doi.org/10.6075/J0K073MP

Source data

• Source Record in the Cell Image Library: https://doi.org/10.7295/W9CIL39225

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

2022-08-12