Re: Hypselodoris bullocki - different colours mating

October 25, 2005
From: Paul Whitehead

Dear Bill,
Concerning your comments about Hypselodoris bullocki - H. apolegma mating  or mating of distinct colour variations within a species.[see message #15038], you may find the attached photographs of interest. They are from a trip to Lembeh last October.

Locality: Nudi Falls, Lembeh Straits, Indonesia, Sulawesi. Lembeh Straits.
Depth: 5 meters. Length: 7 cm (larger of specimens). October 2004. Sand and rock strewn area next to wall. Photographer: Paul Whitehead

Paul

pw@whiteheadimages.com

Whitehead, Paul, 2005 (Oct 25) Re: Hypselodoris bullocki - different colours mating. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15104

Dear Paul,
A very interesting find. I have in the past considered these to be colour forms of one species, but I know some people would like to make them distinct species. What is particularly interesting is how the smaller one is developing a purple band at the front of the mantle and also on the posterior tip of the foot. I assume this means it is gradually chnaging colour to purple. I had previously discounted a colour change like this as I had found small purple animals and large whitish ones, but I guess this suggests animals can change colour, or at least gain colour, at different sizes.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Oct 25). Comment on Re: Hypselodoris bullocki - different colours mating by Paul Whitehead. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15104

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