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biology imaging notes

A ribbon worm

Ribbon worm
Adult specimen of Lineus ruber (Nemertea).
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biology imaging notes

The penis worm

Luckily enough, the magnificent “penis worm” has no penis #priapulida

The penis worm (Priapulida).
Adult specimen of the priapulid Priapulus caudatus collected in Sweden.
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biology imaging notes

Surface of the pilidium larva

Pilidium larva of a nemertean
Cilia covering the pilidium larva of a nemertean, a marine invertebrate. Honorable mention at the Olympus BioScapes 2014.
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biology notes

Nemertean laying eggs

Lineus sp
Nemertean Lineus ruber laying eggs
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biology imaging notes

Face to face with the pluteus larva

pluteus
Frontal view of an echino pluteus larva. Image is composed of 122 photos in different focal planes merged into one.

Source: https://commons.wikimedia.org/wiki/File:Frontal_view_of_a_pluteus_larva.tif

Categories
notes biology imaging

Sea biscuit metamorphosis on the Node’s calendar

The sea biscuit metamorphosis image that I submitted for the Node’s intersection image competition was selected for the November calendar! You can download it here.

Sea biscuit metamorphosis.
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biology imaging notes

Pluteus larva

Pluteus larva of the sea biscuit Clypeaster subdepressus.
Pluteus larva of the sea biscuit Clypeaster subdepressus.
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biology imaging notes

Metamorphosis of a sea biscuit

Metamorphosis is a dramatic life-changing event for many invertebrates. It’s the intersection between two distinct lives – larval and adult. It is how a caterpillar becomes a butterfly.

The process is fascinating, specially when you have the chance to see it happening with your own eyes. You too can see it in the video A Sea Biscuit’s Life.

Recently the community website the Node from The Company of Biologists announced a thematic image competition. The images needed to be related to developmental biology and some sort of intersection.

Because intersection is essentially another word for metamorphosis, I submitted a photomicrograph of a metamorphosing sea biscuit from my master’s thesis research. It made it to the final and was a runner-up!

Metamorphosis of a sea biscuit.
Metamorphosis is a drastic (and common) event in animal life histories intersecting larval and adult stages. The photo shows a sea biscuit during metamorphosis. The apparently amorphous mass of cells exposes the duality of this transformation moment. The larval body retracted and lost its form, but larval skeleton spicules are still attached (at the top). At the bottom developing podia and spines already move and interact with the substrate as the sea biscuit learns how to walk its first steps.
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biology imaging notes

Young sea star

Young sea star
Oral surface of a juvenile sea star. 5th place in the Nikon Small World 2009.
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biology imaging notes

Skeleton of the pluteus larva

Calcareous skeleton of a pluteus larva
Skeleton of the pluteus larva of a sea biscuit. Honorable mention in the Olympus BioScapes 2008.