The Sea Slug Forum - Ascidians (Sea squirts, Tunicates)
Many ascidians form colonies. In the intertidal zone, many of the fleshy, brightly coloured patches under rocks or in shaded crevices are ascidian colonies. PHOTO A is of a solitary ascidian showing the inhalent and exhalent siphons. PHOTO B is a colonial species in which each individual animal (zooid) retains its exhalent siphon.
The Sea Slug Forum - Goniodoris meracula
2008年4月7日 · The foot is usually folded up the sides of the hole so the slug's body is effectively surrounded by its own foot. In some instances the exit/entrance hole in the ascidian colony is smaller than the slug, suggesting that it has grown in size since entering the ascidian colony. In these cases the slug is almost invisible from the outside.
The Sea Slug Forum - Nembrotha kubaryana
2009年12月10日 · Both species removed antifeedant compounds from the ascidian and stored them in their own bodies, exudung them in a slimy mucus when disturbed for their own defence. [N. kubarayna has also been reported feeding on another dark blue ascidian which has been identified as Sigillina signifera. Perhaps Atapozoa is another name for Sigillina.
The Sea Slug Forum - Austrodoris kerguelenensis
2010年4月16日 · Concerning feeding. I agree that it would be most unlikely that your animal is feeding on the ascidian or forams on the surface. As I mention on the Fact Sheet, Barnes & Bullough (1996) report that it feeds almost exclusively on Dendrilla antarctica. Nudibranchs tend to perch in some strange places at times. Best wishes, Bill Rudman
The Sea Slug Forum - Velutinidae - are they sea slugs?
The velutinids [previously Lamellariidae] are a group of snails in which the flattened shell ahs been covered over by the mantle so they look like sea slugs. Many species are very well camouflaged on the ascidian colonies on which they feed. Best wishes, Bill Rudman.
The Sea Slug Forum - Goniodoris castanea
2002年6月13日 · UPPER RIGHT: On compound ascidian Botryllus schlosseri. LOWER LEFT: Laying egg-ribbon. LOWER RIGHT: egg-ribbon. Photos: Peter van Bragt. The mottled brown and white colouration are usually an effective camouflage. Often found partially buried in a hollow which they excavate in the ascidian colony on which they are feeding.
The Sea Slug Forum - Hallaxa michaeli
2009年8月31日 · The lower photo is a single stalked ascidian with one of these at the base. The upper photo is of a group of the stalked ascidians with another one of these at the base we think, it is a bit overgrown and we are not confident of our knowledge about these particular ascidians.
Nembrotha kubaryana feeding in the Philippines - Sea Slug Forum
2009年12月10日 · The ascidian shown was very abundant in the area and while I didn't see either the N. cristata or N. milleri actually feeding they were all situated on or very near the same ascidian. Locality: Dive Site - Sinandigan Wall, 30 ft, Puerto Galera, Philippines, South China Sea, 22 Feb 2007, Reef. Length: 4-6 cm. Photographer: Mike Krampf. Cheers, Mike
The Sea Slug Forum - Ascidian
2000年5月26日 · Did it squirt out some water when you touched it. I am pretty sure that your animal is an ascidian or Sea Squirt, quite unrelated to slugs. It seems to be attached to the rock at one end and has a pair of openings at the free end at the bottom of your photo. I have posted a page on ascidians. Have a look at it for some background information.
The Sea Slug Forum - Nembrotha chamberlaini
2000年9月13日 · Here is a Nembrotha chamberlaini from the Philippines feeding on an ascidian. Size 3 cm, depth 14 m, Nov. 05, 1998, Panglao Island, divesite "housereef" Erwin. Medslugs.Koehler@t-online.de. Koehler, E., 2000 (Sep 13) Nembrotha chamberlaini feeding. [Message in] Sea Slug Forum. Australian Museum, Sydney.