Thursday, December 14, 2006

I want to be a gonozooid when I grow up

So today, dear readers, I will fascinate you with some further information on the potentially world saving Salps, as provided by google search. This article is just fantastic. If only because it features the word oozoid. What a great word. Oozoid. So next time you meet someone who is just a barrel shaped eating machine with no balls, you know what to call them. See, learning is great.

The class Thaliacea contains about 70 species of small barrel shaped animals that spend their lives swimming slowly through the warmer seas of the world. They swim as they feed, or visa versa because like all the Urochordates they are filter feeders and they have their inhalant and exhalent siphons at opposite ends of their bodies. The class is divided into 3 orders; the Pyrosomida which are colonial living and the Salpida and Doliolida which are not colonial. Like the Tunicates they feed by drawing a current of water in through their inhalant siphon and out through the exhalent siphon. Between the two siphons the water passes through the many pore or slats of the enlarged pharynx which occupies most of the body cavity. The water current is driven by beating cilia. Small particles of plankton are collected on a film of mucous which continuously passes across the pharynx. This mucous is secreted by special cells and is kept moving by the beating of numerous small cilia until it is swept into the digestive tract.
The Salps range in size from 1.5 to 19 centimetres long and are often quite common in warmer waters. They are normally colourless and live most of their lives as asexual ozooid form. This form naturally has no gonads, but they have a central stolon along which numerous buds appear, these buds will eventually grow into the sexual gonozooids. Apart from the possession or absence of gonads the two forms are basically the same. The developing gonozooids move along the stolon and are eventually released from its free end, however they remain linked to each other and long chains may develop before they break off from the parent oozoid. These chains may be up to 2.5 metres long. The individual gonozooids are hermaphroditic and again they produce only a single egg which when fertilised and released grows into a new oozoid. The oozoid develops and hatches inside its parent gonozoid meaning that slaps are effectively viviporous (animals which give birth to live young) in their sexual generation

4 Comments:

Blogger Daniel Hoffmann-Gill said...

I'm loving your salp facts.

2:46 PM  
Anonymous Anonymous said...

thats really interesting.

2:55 PM  
Anonymous Anonymous said...

i think you already are.
x

a gonozooid that is. your certainly not a grown up.

3:00 PM  
Anonymous Anonymous said...

Im going to be in Walsall making people redundant in January.

I may pop over to Telford and stalk you for a bit.

5:40 PM  

Post a Comment

<< Home