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Field work with Nature Live

2 Posts tagged with the mollusc 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.

 

PIC 11 (Custom).JPG

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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As well as taking part in video conferences with schools back on the mainland this morning, we visited the local The Five Island School, to talk to some of the classes about our trip and why we we’re here. James Maclaine and Jon Ablett are seasoned Nature Live speakers but three classes of thirty 6-10 year olds is a daunting prospect for anyone. However, the pupils were superb - enthusiastic and interested and full of great questions.

 

I don't have any photos of the sessions to put up here, but I think it is safe to say that the the pupils enjoyed hearing from our scientists. I saw that two of them, Hafwen and Amelie, had drawn a quick (but very detailed and accurate) picture in the playtime after we had finished and had to get a picture of it. Well done to them for doing such a good picture and to Jon; the mollusc message clearly struck home.

 

PIC 1 (Custom).JPGAmelie and Hafwen's brilliant molluscs

 

I spent the rest of the day with Jon, back at the bulb fields head-down looking for snails and slugs.

 

PIC 2 (Custom).JPGSnail and slug hunt

 

This was really hard work but great fun. Finding a slug in a field of bulbs can be a harder task than finding a needle in a haystack. However, I did fin myself getting extraordinarily excited by the tiny molluscs, and they are very beautiful close up.

 

PIC 3 (Custom).JPGWe have a winner

 

If you look closely you can see the breathing hole. All slugs and snails breathe through a hole in the side of their body and - in slugs - the position of this hole can determine what family they are in.

 

PIC 4 (Custom).JPGLook closely and you can see the hole in the slug that it uses to breathe

 

After a good search we had found some really cool stuff, including Oxycailus alliarius.


 

 

Collecting slugs and snails

 

It is interesting in itself that there are any terrestrial molluscs on the islands. The soil here has very little naturally occurring calcium in it and molluscs require this element to build their shells. In Scilly, the high winds and high humidity mean the calcium is effectively ‘blown’ across the islands and dissolved into the soil, and it is this that allows the molluscs to build their shells.

 

Back at the ranch Jon explained some of techniques he uses to preserve the specimens.

 

 

 

How to join the snail preservation society

 

Today was also my birthday, and the team prepared a great meal and baked me a cake which was brilliant.

 

PIC 5 (Custom).JPGMy birthday cake ... thanks guys!

 

We had (foraged) watercress soup to start, then an amazing fisherman's pie - I caught the pollock and Vanessa turned them into this spectacular creation complete with (foraged, again) samphire.

 

PIC 6 (Custom).JPGMy catch of pollock

 

 

PIC 7 (Custom).JPGFisherman's (pollock) pie made by Vanessa Pike, yum!

 

Thanks so much to all the team but especially Mark and Vanessa for making such a lovely meal!

 

PIC 8 (Custom).JPGWhat better way to end my birthday than a sight like this?