Nature Blog Network
Showing posts with label Saturday Spineless Specimen. Show all posts
Showing posts with label Saturday Spineless Specimen. Show all posts

Saturday, June 7, 2008

Saturday Spineless Spotlight #1


flambouyant cuttle 3510, originally uploaded by bversteegh.

The flamboyant cuttlefish (Metasepia pfefferi) is one of the other known poisonous cephalopods1. A tiny cuttlefish, adults are only known to reach ~8cm. They inhabit relatively "shallow" waters (<80m) in a very limited geographic range around Indonesia and northernmost Australia. They have been found primarily on mud flats and coral rubble areas. The name flamboyant comes from the purple, pink white, yellow and black colors it displays in ripples when disturbed. The colors are believed to a warning to potential predators of the flamboyants toxicity. They hunt during the day, walking across the ocean floor on their arms and using two flaps of their mantle. Known prey include small crustaceans (shrimp especially) and fish. They mate head to head, after which the female deposits the fertilized eggs in rock and coral caves or in coconut shells, but does not brood them. Like many cephalopods, after mating the adults soon die. The type specimen was collected in 1874 and is now part of The Natural History Museum of London collection.

Daisy Hill Cuttle Farm has some excellent video of a specimen they received from an aquarium display. These cuttles have not been successfully raised in captivity and are NOT recommended for home aquaria.



Check out the rest of the Daisy Hill Cuttlefish video's (warning they also have hard core cuttle porn!)

(edit: If Daisy Hill's Cuttle Porn is down... Dorid has offered us her own home video cuttle sex shots. Thanks for sharing Dorid!)

Kingdom
Animalia

Phylum
Mollusca

Class
Cephalopoda

Order
Sepiida

Family
Sepiidae

Genus
Metasepia

Species
Metasepia pfefferi


1 - http://www.tonmo.com/forums/archive/index.php/t-9570.html Has this been published yet??

Sunday, June 1, 2008

Cephalophilia #1 - Blue Ringed Octopus - H. lunulata



I thought a touch of cephalopod love on a beautiful weekend day. A nice example of one of the three genus of known toxic cephalopods: Hapalochlaena lunulata (Greater Blue Ring Octopus) from the Philippines. Highly toxic, they are rarely above 70g in size, but have enough toxins in them to deliver 20+ doses of toxin at lethal levels to an adult human. The chief component of their toxin is the same compound at the heart of cone snail toxins and the toxin of pufferfish and causes paralysis including respiratory and cardiac shutdown. Fortunately this guy hunts small crustaceans mostly, and bites on humans are self defense.


Kingdom
Animalia

Phylum
Mollusca

Class
Cephalopoda

Order
Octopoda

Family
Octopodidae

Genus
Hapalochlaena

Species
Hapalochlaena lunulata