Re: Tenellia adspersa from Arcachon Bay
April 7, 2009
From: Marina Poddubetskaia Ossokine
Concerning message #22381:
Dear Bill,
To answer your request of more photos of Tenellia adspersa, here is another set from Arcachon Bay :
Upper photo: a 1 mm long juvenile and as you can see it, at this size the oral tentacles aren't visible on the oral veil.
Locality: "L'Ecluse de Verdurette", Domaine de Graveyron, Audenge, Bassin d'Arcachon, 1 m, France, Atlantic: 25 August 2006, Length: 1 mm. Photographer: Marina Poddubetskaia .
Middle photo: the lateral view of a 3 mm long specimen.
Locality: "L'Ecluse de Verdurette", Domaine de Graveyron, Audenge, Bassin d'Arcachon, 1 m, France, Atlantic: 4 September 2006, Length: 3 mm. Photographer: Marina Poddubetskaia .
Lower photo: another view of the 3.5 mm long specimen in my previous message.
Best wishes,
Marina.
Nembro website
nembro@yahoo.fr
Poddubetskaia Ossokine, M., 2009 (Apr 7) Re: Tenellia adspersa from Arcachon Bay. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/22399
Dear Marina,
Thanks for these extra photos.
Following our on-going discussion on different egg masses in animals identified as Ercolania viridis [message #22387] I should mention that Tenellia adspersa is one species that has been shown to have two development types. Individuals can produce a few egg masses with relatively large eggs which hatch as small crawling slugs [direct development] or it can lay many egg masses with slightly smaller eggs which hatch as swimming but non-feeding larvae [lecithotrophic].
Best wishes,
Bill Rudman
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