Winter Interlude pt. 2: Sea Stars!! Pentaceraster and others!

and so the weather continues in the DC area with a blizzard dropping record breaking snow on the Metro area.. So, I continue to thank Posa Skelton for his pics of tropical echinoderms from Fiji as a pleasant distraction until things get back to normal next week!

Pentaceraster regulus!
Linckia laevigata (with 4 arms!)
Choriaster granulatus

..and of course the crown of thorns! Acanthaster planci

...and here's an unidentified crinoid !!!

Winter Interlude pt. 1: Tropical Holothurians (sea cucumbers) from tropical Fiji!

Greetings to everyone! So, some of you may have heard about the trivial bout of weather we've been having with more to come! Life has been snow! snow! snow! for the last week or so..

I have literally been snowed out of the museum for the last few days!

(photo by Jim Diloreto USNM)

Enter Posa Skelton, the Coordinator of the Pacific Islands Network for Taxonomy, who is based in Fiji and had many pictures of sea stars to identify and other echinoderms to share!

Just the thing to break up the winter monotony!
So, today: TROPICAL SEA CUCUMBERS from FIJI!!

UPDATE!!!! The knowledgeable Dr. Alex Kerr at the University of Guam has provided me with up to date identifications of the animals below!!! Enjoy them with authoritative confidence!!

Yeeha!!

Bohadschia vitiensis (Cuverian tubules are being emitted as a defence!!)
The oh-so sexy Holothuria (Halodeima) edulis

Actinopyga echinites

Stichopus herrmanii (and probably the one below it also) Pearsonothuria graeffei
Holothuria (Microthele) fuscopunctata (and the one below it)Holothuria (Microthele) whitmaei
Stichopus chloronotus
WITH MORE TROPICAL ECHINODERMS LATER THIS WEEK!!

Iconaster longimanus: got a starfish? Share it on the Echinoblog!!

(Iconaster longimanus by Franca Wermuth)

Welcome to the first post of the new year! I thought I would kick-off the year with a new kind of post!

Many of you know that as a taxonomist, I am happy (when i have the time) to identify images of various species that are sent to me from YOU the public. BUT up until recently, I performed this service privately. I am one of the few people in the world who can ID these beasts with some authority, so my time to do "freebies" is at a premium.

So, I was thinking that pics of animals I identify CAN (and should?) BE SHARED with the PUBLIC!

and so here we are.

Today's beast is member of the Goniasteridae, called Iconaster longimanus. A beautiful animal that is found in the central Indo-Pacific, including the Philippines, Singapore, the South China Seas, Indonesia, SE Arabia, and in Northern and western Australia, including Queensland in 6-85 meter depths. You can find a paper I wrote about the taxonomy of Iconaster here.

Today's picture was provided by marine photographer Franca Wermuth, whose website can be found here. My understanding is that she's normally a nudibranch afficionado, but has now added starfish to her list of interests! The animal above was photographed in the Philippines from Romblon (Romblon Province, Romblon Island), next to Lugbung Island in about 35 meters depth. Water temperature was 27.2°.

Relatively little is known about Iconaster's biology. Its name Icon is from the Greek eikon for portrait or image, and possibly refers to the way the marginal plates form a frame around the edge. And -aster of course refers to the word "star".

Its species name longimanus translates into "long hands" which clearly makes reference to the extended arms.

The Pulau Hantu blog has a nice picture and an interesting write up on its conservation in Singapore
A quote from their blog

What may seem common to divers around the the reefs of Pulau Hantu and the Southern Islands, is actually an animal that is listed as "Vulnerable and rare" by The World Conservation Union's Red Data Book.

The icon star (Iconaster longimanus) is a striking species that occurs on lower reef slopes and the adjacent sea bed around many of the Southern Islands. It feeds on epilithic growth on hard substrata and coral rubble. Zoologically, it is interesting as it has large lecithotrophic eggs which show abbreviated development, without a larval stage. In recent years this sea-star has been found to be moderately common on and around many of the reefs fringing the Southern Islands. However it is considered vulnerable because living on and near the slopes of fringing reefs, it is threatened by reclaimation activities. Additionally, its attractive appearance many lead to over collection as a curio. Such threats are of particular concern given its slow growth rates.

The only thing I can add? Iconaster has been made into a plastic toy!
Happy 2010 Everyone!