[Deep-sea food webs] Xray goodness | The Octopus News Magazine Online
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[Deep-sea food webs] Xray goodness

TPOTH

Vampyroteuthis
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Jan 22, 2004
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280
#1
Disclaimer: No ceph content. Apologies in advance. :oshea: made me post this :lol:

So thanks to Master O's galaxy of contacts we have managed to get a few fishes to an X-ray machine. Suffice to say that I'm blown away...really...

We got Xrays for two spiky oreos (Neocyttus rhomboidalis).



One (spiky1.jpg), above, did show a rather large scar (almost guaranteed to be a predator attack which the fish did survive) on its pre-dorsal profile but said scar doesn't seem to have left any permanent "record" onto the bone structure. However we were told that this oreo got its back/spine broken at some point and survived that too. Upon playing with the contrast (and other Photoshop whatchamacallits), other "interesting" things appear which leave us rather baffled. Damage (and, i believe, healing) in areas (thin arrows) surrounding the compressed vertebrae (larger arrow).



For comparison, spiky2.jpg (above) doesn't show that kind of damage.

Also spine.jpg (below) shows a close-up of the spine areas for both oreo (spiky1 on top and spiky2 below).



More to follow, stay tuned....

TPOTH
 

Steve O'Shea

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Nov 19, 2002
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4,668
#2
Mightily impressed I am!! I hope you all don't mind this slight non-ceph digression. It will become ceph-oriented in no time, once the stomach contents of these fish start getting analysed, especially the Orange Roughy.

There's method in our madness. Who wants to see more???
 

CarlS

O. vulgaris
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Aug 30, 2004
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89
#3
Very interesting. I wouldn't mind seeing a whole series of these :)

--Carl - whose back problems makes him empathize with spiky1 :?
:onycho:
 

Infusoria

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Jun 3, 2004
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#4
Here's an orange roughy (Hoplostethus atlanticus) in this picture you can clearly see the otoliths and swimbladder. This is an immature fish of about 20cm.

These are a couple of dodgy shots from my dodgy digital camera. The resolution of this is pretty crap. It will be interesting once we've had all the x-rays scanned and I've enhanced them a bit.


Interesting how dense the roughy flesh is.




 

Infusoria

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Jun 3, 2004
Messages
486
#5
These have been enhanced in Photoshop CS. Obviously this the same image as above, I've just tried to enhance as best I can from the original digital shot. Thanks again to Steve making this possible. :notworth:





You know this marine biology thing is much more fun/interesting/cooler than making brochures about molded cupboard doors... :P
 

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