Movies

Spider Development

	1 \| Animation \| View Animation Top of germ disc has been removed and cells are visible along cut edge. Top of yolk is dark blue. Cells ingress through the blastopore onto the yolk mass. Internalized cells become mesendoderm (yellow) or cumulus (red). Animation courtesy of Tony Moreno.
	2 \| Canonical \| View Movie Normal development of Cheiracanthium mildei from nuclear division through hatching. Cumulus migrates to the left. Elapsed time 6.6 days. Movie courtesy of Christine Bates ’10 and Marion Burrill ’09.
	3 \| View Movie Contraction in Cheiracanthium mildei, side view. Elapsed time 6 hr. Movie courtesy of Bryce Cragg ’08.
	4 \| View Movie Normal development of Zygiella x-notata from blastoderm through hatching. Posterior down. Elapsed time 271 hr. Movie courtesy of Crystal Chaw ’02.
	5 \| View Movie Cumulus formation and migration (gastrulation I) in Zygiella. Cumulus cells are colored red; some cells that will ingress during gastrulation II are in different colors. Cells were traced frame-by-frame, but movie shows one-hr intervals only. Posterior down. Elapsed time 20 hr. Movie courtesy of Emily Vance ’05.
	6 \| View Movie Primitive plate formation (gastrulation II) in Zygiella. Some ingressing cells are colored. Movie starts at cumulus formation and runs through gastrulation II. Cells were traced frame-by-frame, but movie shows one-hr intervals only. Posterior down. Elapsed time 24 hr. Movie courtesy of Emily Vance ’05.
	7 \| View Movie Primitive plate formation (gastrulation II) in Zygiella. Movie shows movement of surface cells toward and internalization at a central blastopore. Blastopore forms slightly above and to the right of the starting position of the cumulus. Cumulus migrates toward lower left. Elapsed time 15 hr. Movie courtesy of Emily Vance ’05.
	8 \| View Movie Gastrulation I, II, and III (Stages C–H) in Zygiella. Note movement of internalized cells from center to periphery during gastrulation II. Cumulus migrates toward lower left. Elapsed time 45 hr. Movie courtesy of Emily Vance ’05.
	9 \| View Movie Movement of caudal bud in Zygiella. Movie spans cumulus migration through caudal bud movement (Stages D–I). Lateral view, posterior to left. Elapsed time 40 hr. Movie courtesy of David Rasmussen ‘07.
	10 \| View Movie Dorsal field formation in Zygiella. Some dorsal field cells are colored. Cells were traced frame-by-frame, but movie shows five-hr intervals only. Posterior down. Elapsed time 40 hr. Movie courtesy of Emily Vance ’05.

	Steatoda, very early development \| View movie. A, Only yolk globules are visible early. B, some nuclei (red arrowheads) become visible.	Video stills and movie courtesy of Christine Bates ’10.
	*Steatoda* \| View movie. The cellular mass of Steatoda feeds cells into the interior of the embryo.	Video stills and movie courtesy of Emily Vance '05.
( Visit the spider development research page. )

Salamander Development

	Ensatina pharyngula \| View movie. Still from a realtime movie of an Ensatina pharyngula, about a month old. Note enormous yolk sac with vitelline vessels. The embryos regularly rock back and forth at this stage. Development to hatching is said to take about 6 months.
( Visit the salamander development research page. )

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