Alder & Hancock, 1854
Northeastern Atlantic from Norway to western Mediterranean.
UPPER: Baie de Peyrefitte (near French/Spanish Mediterranean border), under stones in 4 m deep, in June, 2002. Approx 20 mm long. Photo: Patrick Heurtaux.
LOWER: radular ribbon with indiviudal teeth fused into a serrated ribbon. Scale bar = 1 micron. PHOTO: Gonçalo Calado.
This strange species appears to feed exclusively on the eggs of teleost fish. It grows to about 25mm but is seldom seen outside the fish egg masses it feeds on. The anus is absent, apparently because there is little waste in the highly nutritious food Calma feeds on.
See message from Gonçalo Calado below comparing Calma glaucoides which feeds on eggs of Lepadogaster lepadogaster, Lepadogaster purpurea, Lepadogaster candollei, Parablennius gattorugine and Parablennius pilicornis, with Calma gobioophaga Calado & Urgorri, 2002 which feeds on the spawn of Gobius niger,.
• Alder, J. & Hancock, A. (1854). Notice of some new species of British Nudibranchiata. Annals and Magazine of Natural History, 14(2): 102-105
• Calado, G. & V. Urgorri, 2002. A new species of Calma Alder & Hancock, 1855 (Gastropoda: Nudibranchia) with a review of the genus. Journal of Molluscan Studies, 68: 311-317.
Rudman, W.B., 1999 (September 15) Calma glaucoides Alder & Hancock, 1854. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/calmglau
Re: Unknown white aeolid from French Brittany
From: Greg Brown, August 11, 2006
Unknown white aeolid from French Brittany
From: Wilfried Bay-Nouailhat, July 29, 2006
Calma glaucoides and C. gobioophaga
From: Gonçalo Calado, October 27, 2002
Calma glaucoides from French Mediterranean
From: Patrick Heurtaux, August 1, 2002
Re: Calma glaucoides
From: Gonçalo Calado, August 1, 2002
From: Gonçalo Calado, September 16, 1999