Photography

Larva of the Sea Urchin Lytechinus Variegatus

Elizabeth Whitehill

Larva of the Sea Urchin Lytechinus Variegatus  by Elizabeth Whitehill

This photomicrograph of a larva of the sea urchin Lytechinus variegatus was taken to document growth of the larvae. The length of the arms of a sea urchin larva is often measured to monitor growth of the larva. This particular larva was raised at 25°C and was being raised concurrently with larvae held at 30°C to study the effects of temperature on the early development of this species. Sea urchins are easily reared from fertilization through metamorphosis, and the purpose of this study was to see if elevated rearing temperatures affect larvae even after metamorphosis.

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