Ctenophora - Science topic

Can anyone help me to identify the following ctenophore up to species level ..Location -Indian west Coast. Size- 25 mm diameter (Bell)..If anyone can share ctenophore ID resource materials ( books or manuals ) we will be highly grateful....Thank you ..

Hello!

The attached pictures show several ctenophore species photographed between July and October in the Kwajalein Atoll, Marshall Isalnds by SCUBA divers. Unfortunaltey, no size measurements have been taken at the time.

Does anybody know the species names?

Your help is much appreciated.

Florian

recently I am working on a project about the effect of bio-luminescence in cancer research. It would be my honor and pleasure to help me on this way

I would like to reach out to the coral reef research community to find out if anyone is (or was) working on benthic ctenophores, Coeloplana spp., associated with soft corals. Some 26 years ago while working on “The Ecology of the Indonesian Seas” we observed long sticky strands steaming from soft corals. These strands were streaming mainly from Sinularia spp. in areas with strong currents (0.5.m/sc). The sticky stands were extended from the surface of the soft corals and then reeled in once plankton or other suspended material became attached to them. I have done many dives, but I have never seen this type of activity associated with Sinularia spp. during daylight hours. Initially I thought that these strands originate from the soft corals themselves, but I think that they are actually the feeding tentacles of benthic ctenophores that are associated with some of these soft corals. I would like to find out if anyone else has observed this during their field observations and if they know which species of ctenophores were involved. I am attaching a short video of this activity.

Tomas

Literature that contains diagnosis/ identification key to Pleurobranchia species.

Hi,

I have here some in-situ imagery from the Canadian Arctic. Ctenophores and Hydromedusae? I have ideas what species or genus they are but I am not sure. Would be nice to have some more opinions on this. There is no scale bar, but 1 image pixel is 20 micron. I'll put a size estimate next to the links.

Link group 1:  Size is about 1.56 mm

Link group 2: I actually have no idea what this is. The diameter is about 2.56 mm for the more disk shaped one and 2.15 mm for the elongated one (top to bottom).

Link group 3: Size about 10.82 mm top to bottom.

Link group 4: I am quite lost here. Size about 7 mm for the first link.

~14.780 mm top to bottom

Size about ~17.6 mm 

Thanks a lot!

I am looking for the time until hatching (in combination with temperature) of this species. If the size at the time of hatching was also known that would be great - thank you.

I have read four published studies by Kasuyo et al. (2000a, 2000b, 2002 and 2008) and did not find the information in there.