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in Photo / Video Showcase
Posted February 24, 2009
Not enough worms. ;-)
Posted February 20, 2009
There must be more color variation in living animals (not surprising) than reported in the literature. Below is how the 2 species are separated in a big monograph by Chace & Bruce 1993. The color in your animal doesn't really match either of them. I can get the original descriptions if you want them Les.
Pereopods slender, dactyl of 3rd pair with accessory tooth on flexor margin sharply
acute, propodus more than 12 times as long as wide; color brown marked with
discrete darker reddish brown circles
G. circellum Manning, 1963:54, figs. 3, 4
(Florida Keys and Bahamas, western Atlantic;
cryptic in coral heads to depth of 6 meters)
Pereopods stouter, dactyl of 3rd pair with accessory tooth on flexor margin broadly
rather than sharply acute, propodus less than 8 times as long as wide; color orange
marked with cream-colored spots outlined in dark brown or black
G. splendens Chace and Fuller, 1971:493, figs. 1-5
(Puerto Rico, western Atlantic)
in Critter Identification
Posted February 13, 2009
#1 is a pycnogonid arthropod, commonly known as a sea spider
#2 belongs to family Grapsidae, probably genus Percnon
#3 is the mushroom decorator crab Cyclocoeloma tuberculata. It almost always has corallimorph anemones on the back
Posted February 12, 2009
wow, that sure does looks like Waminoa. I don't know if this association has ever been reported before.
Hey, you got the whole article - cool. Do you have a subscription? Because if you do we have to have a talk..... Actually it will be more like me begging you for certain papers!
Unfortunately the link didn't work. Normally Zootaxa only gives access to the first page (which is here zootaxa ) . You have to have a subscription to get complete publications unless the author pays extra to provide open access.
The other two species - H. colemani & H. waleananus - are described in another subscription only journal here Aquapress
Posted February 10, 2009
Anyone! Wormgirls know they're always at risk of being wrong when offering an opinion about anything other than worms....
Yes, that's more typical color for a severnsi. The color can be fairly light with "marbling"; the bright red patch at the curve of the neck, the small red spots on the breast, the red band where the tail connects to the body, the white tail, and the white spots seem to be consistent characters. Dave Harasti & Richard Smith have some nice shots of light colored ones -
Ah, now that's a gammarid amphipod. A local expert should be able to tell what the family is from the photo - Dr. Jim Lowry at the Australian Museum would be the fellow to ask. It would probably require dissecting out the mouthparts and other bits to figure out species though. And Gile's is right, it's a juvenile fish; just hatched judging by the size! Fantastic capture Matt.
Sphaeromatid? Whatever it is it's stunning. For isopods in your area the guy to contact is Dr Niel Bruce - you'll find his email here http://isopods.nhm.org/people/bruce/
Posted January 30, 2009
That's in Newman & Cannon's "Marine Flatworms: the World of Polyclads" as Acanthozoon sp. It's fairly common but apparently it hasn't been described yet.
Posted January 29, 2009
Really cool find Les! I've gotten these little guys before but never knew what they were.
Posted January 21, 2009
It's certainly possible though given how fast they reproduce and spread I suspect they wouldn't have gone unnoticed for long.
Hi Quinn - Aquarium fish get dumped all the time so I'm not surprised you saw one in the 60s. As single individuals though they die without reproducing unlike what's going on now.
Hard to say. Similar things I've seen in the past were cnidarians (like an anemone or solitary hydroid head), sponges, foraminiferans or other types of large protozoan, tentacle masses, etc. It looks very delicate which means that only a diver would see it in good shape. If it were brought up for examination it would probably deteriorate very rapidly.
Posted January 15, 2009
That's Phycocaris simulans. I've seen images of it from Indonesia, Bali, Philippines, and warm-water areas of Japan. They're probably not rare, just unseen because they are so well camouflaged.
Hi Graham -- They are both species of Hippolyte. The Xenia commensal is what's typically called Hippolyte commensalis in guide books. I couldn't find the other. There are many species which are commonly found on algae & are capable of quite a bit of color change depending on the color of the algae.
Posted January 14, 2009
Yup. Sammy thinks there's likely to be a whole suite of species hiding under the name Hippolyte commensalis.
Posted January 13, 2009
My shrimp guys, Sammy & Art, have yet to see an actual specimen. One says it's a Dasycaris species, the other is a species of hippolytid. None of the images so far have shown the details they need to see to be sure.
Posted January 12, 2009
Hi Laz -- for your part of the world the guy to ask is James Wood. You can contact him through his site the Cephalopod Page - http://www.thecephalopodpage.org/
in The Galley: General Chat
Posted December 27, 2008
Hi everyone --
I belong to SCAMIT - the Southern California Association of Marine Invertebrate Taxonomists - a non-profit dedicated to educating & supporting local taxonomists. Most of our budget goes to training sessions for newbies and grants to encourage publication of new species. Like all non-profits we're always in need of money so I've put together a calender which features microscope shots of live UW critters collected off California, the Caribbean, and Hawaii. So if anyone needs a calender, likes inverts, has $16.99 (plus shipping) to spare and wants to support a good cause head on over to www.cafepress.com/scamit The calender is at the bottom of the page.
Posted December 18, 2008
Same phylum. The common name "gorgonian wrapper" is increasingly used for this species, more correctly known as Nemanthus annamensis. It seems to live only on whips & gorgonians & is usually open at night. I think the pattern on the body makes it one of the most gorgeous anemones around.
Posted December 17, 2008
If only I could!
Yup, that's all I got. I can't find any images of live acoetids - which is why I'm so excited about yours - and nothing about color in the described species. Even if there were some, there's no information on the usefulness of color in the family. If you'd like to legally get me an actual specimen so I can check body structures with a microscope I can give you a better name. In the meantime Acoetidae unidentified is the best I can do. And thanks for the information about habitat and behavior. That fits what's already known.
Posted December 12, 2008
You were right - it's a barnacle, called Alepas pacifica. Here's a bit about them - http://jellieszone.com/hitchhiker4.htm