February 20, 2007
From: Jackie Hildering
The photos are not ideal but thought it might be of interest to have photos of the egg masses that might potentially allow discerning between Adalaria proxima and Onchidoris muricata. There were multiple patches of Adalaria laying eggs at this site. Do they too have an annual lifecycle like Onchidoris?
Locality: Five Fathom Rock, Port Hardy, 55, British Columbia, Canada, Pacific Ocean, 18 February 2007, Bouldered bottom . Length: 1.5 cm. Photographer: Glen Miller.
Great thanks for your dedication to this site,
Hildering, J., 2007 (Feb 20) Adalaria proxima egg coils. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19495
Thanks for the photos. I am surprised we haven't many photos of the egg masses of these two species, which have been the subject of many studies comparing their reproductive strategies, life histories etc. You will find a link to some major references on this work onthe Fact Sheets of both species.
Both have annual life cycles, but Adalaria proxima has lecithotrophic larvae [non-feeding planktonic larvae] while Onchidoris muricata has planktotrophic [feeding planktonic larvae].
Re: Adalaria proxima egg coils
From: J. Hildering & G. Miller, November 10, 2007
Re: Korean Adalaria proxima
From: Sandra Millen, February 12, 2006
Re: Korean Adalaria proxima feeding
From: Jeff Goddard, February 12, 2006
Korean Adalaria proxima feeding
From: Dong Bum Koh, February 11, 2006
Re: Adalaria proxima? from British Columbia?
From: Jeff Goddard, October 9, 2003
Re: Adalaria proxima? from British Columbia
From: Alan Shepard, October 9, 2003
Adalaria proxima? from British Columbia
From: Marli Wakeling, October 6, 2003
Adalaria proxima from Newfoundland
From: Paulette Penton, March 23, 2003
Photos of Adalaria proxima
From: Bernard Picton , July 6, 2001