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Field work with Nature Live

2 Posts tagged with the molluscs tag
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I spent day 8 of our trip with Andreia Salvador, curator of marine molluscs, looking at some of the stunning creatures she has found here in Scilly.

 

PIC 1 (Custom).JPGAndreia Salvador collecting marine molluscs

 

 

PIC 2 (Custom).JPGMarvellous marine molluscs

 

A curator’s job is to ‘future proof’ their collection; in the future, a specimen may be researched using techniques we don’t yet know of and Andreia is keen to perfect preservation methods that allow for as much of a mollusc to be accessible as possible. The molluscs known as gastropods, (things like top shells and winkles) have a trap door called an operculum which completely seals the animal inside.

 

PIC 3 (Custom).JPGA firmly shut operculum

 

In the past, researchers who needed the soft parts of molluscs may have had to break the shell open, destroying the specimen. Andreia is keen to work out the best way to preserve both the shell and the soft parts intact. The process of encouraging the animal out of its shell is called relaxing. This may take anything up to 12 hours to do, but it is crucial in providing future researchers with the specimens they may need.

 

PIC 4 (Custom).JPGA specimen beginning to ‘relax’

 

We have found some exceptionally beautiful molluscs over the past few days. When I was out with James, we found these spotted cowries and blue-rayed limpets.

 

PIC 5 (Custom).JPGSpotted cowrie

 

PIC 6 (Custom).JPGBlue-rayed limpets

 

The limpets in particular, were exciting for Andreia because, in her native Portugal, they are know as beijinho, a ‘little kiss’. We found them inside the kelp forests and they have absolutely stunning, electric colors. Although not rare, they provided quite a challenge to locate, as they lived in the 'hold fasts' at the base of the kelp.

 

PIC 7 (Custom).JPGA blue-rayed limpet living in the hold fast of kelp

 

Andreia was delighted when we returned with the good news that we had got some. I felt a little left out but, as the bigger man, kept my feelings to myself ...

 

PIC 8 (Custom).JPGBitter? Me?

 

Last night we had a BBQ - organised by Jon and Tony, it was to make the most of the nice weather that has now turned for the worse. It was a very serious affair...

 

PIC 9 (Custom).jpgWho has a hat specifically for BBQ? Tony Vinhas!

 

... Tony put on his ‘BBQ hat’ and began to refer to himself, in the 3rd person, as the grillmaster.

 

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The grillmaster in the world's biggest barbecue pit - how long ‘til it’s ready?

 

He expertly worked his way through various meats and veggie options and as the sun set behind us we enjoyed a lovely evening all together.

 

PIC 10 (Custom).JPG

Relaxing on the Woolpack

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After collecting so many samples over the last few days it was now time to sit down and sift and sort through all of them to see what species we found.

 

Diva spent the morning looking over the bits of wood that were brought up yesterday. She picked off as much of the fauna as she could and put them directly into salt water and alcohol to preserve them for the journey back to London. So far she has found crabs, shrimps, polychaetes and some hydroids growing on the worms.

 

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Above: Diva is trying to pick off all the animals she can see living on the wood

(Click on images to see them full size)

 

She also put the pieces of wood out to dry in the sun so that she can take those back with her and put them in the CT scanner. She will be looking for wood-boring molluscs but won’t have the results for a while.

 

We all got slightly preoccupied by seeing a grass snake in the bushes...

 

snake.jpg

 

Helena spent most of the day going over the only piece of whale bone the shark left behind. She has found lots of polychaete worms living on the bones but no evidence of any whale fall specialists, like Osedax, yet.

 

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Above: Helena shows us on the big screen the creatures she is looking at under the microscope

 

Helena has already spotted 2 potential new species of worm from the mangrove samples and once she's back at the Museum she’ll be able to say for certain. If they are, then that leaves one more thing. The name…

 

 

Tomorrow we're hoping to go over to Ocean Hole on Eleuthera to drop REX down to 200m and hopefully see lots of animals using the HD camera. Maybe sharks too. We’ll also be collecting some copeopods that Geoff asked us to collect for him from the Attenborough Studio during the Nature Live event last week! All weather dependent, of course...