Flabellina affinis egg-mass

March 18, 2001
From: Erwin Koehler


Dear Bill,
Attached are 2 photos of Flabellina affinis with egg-masses:
ek112224 has the purple egg-mass of F. affinis in the background, in front are 2 white egg-masses which I think to be from Cratena peregrina which I have sent a photo of in a separate message.
ek113116 shows a pair of F. affinis on the egg-mass of C. peregina.

I used to think that different species don't live so close together, these 2 are often seen together...
Data:
ek112224: slug 27mm, depth 16m, Spain, Cala Joncols, divesite El Bisba, July 2000
ek112224: slugs ~35mm, depth 9m, Spain, Cala Joncols, divesite La Caverna, July 2000
Erwin

Erwin@medslugs.de

Koehler, E., 2001 (Mar 18) Flabellina affinis egg-mass. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3940

Thanks Erwin,
Concerning species not living close together. Species tend to live near their food, so species that eat things that no one else eats are usually not found in mixed species groups, but if a number of species feed on the same species of food then you often find a mixed group. In the case of hydroids, where often many species of hydroids form a tangled 'thicket' then again you can find an assortment of aeolids looking for their particular delicacies.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (Mar 18). Comment on Flabellina affinis egg-mass by Erwin Koehler. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/3940

Factsheet

Flabellina affinis

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