Eggs and development of Hancockia californica

November 30, 2005
From: Jeff Goddard

Hi Bill,

Here are some images of the egg mass (2 mm high), uncleaved eggs, and veligers (one day before hatching) of Hancockia californica. The eggs averaged 100 microns in diameter and hatched after 10 days at 12-17 degrees C as planktotrophic veligers with egg-shaped shells averaging 243 microns in length. I rarely see this species, and this was the first time I have been able to observe its egg mass and development.

Locality: Montana de Oro, California, USA. Length: 2 mm (height of egg mass). 30 May 2005. Rocky intertidal. Photographer: Jeff Goddard

Best wishes,
Jeff

goddard@lifesci.ucsb.edu

Goddard, J.H.R., 2005 (Nov 30) Eggs and development of Hancockia californica. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15369

Thanks Jeff,
Bill Rudman

Rudman, W.B., 2005 (Nov 30). Comment on Eggs and development of Hancockia californica by Jeff Goddard. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15369

Factsheet

Hancockia californica

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