Germlings and marine things.

Images made through a microscope. All subject types.

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micro_pix
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Germlings and marine things.

Post by micro_pix »

Here are three things I caught in my plankton net on the shoreline.

The first is the larvae of the shell-boring polychaete, Polydora hoplura - a view of the underside.
Polydora hoplura
Polydora hoplura
.

These are the germlings of the seaweed Sargassum muticum - Japanese Wireweed, they are around 150 microns long.
Germlings - Sargassum species.
Germlings - Sargassum species.
and this is a marine harpacticoid Copepod, it's around 700 microns.
Harpacticoid Copepod.
Harpacticoid Copepod.
The images were taken using darkfield with the led/flash unit supplied by Saul and were stacked in Zerene Stacker
Last edited by micro_pix on Sun Jun 28, 2020 4:27 pm, edited 3 times in total.

sebba28
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Re: Germlings and marine things.

Post by sebba28 »

Very nice.

micro_pix
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Re: Germlings and marine things.

Post by micro_pix »

.

Thanks.

CEN
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Re: Germlings and marine things.

Post by CEN »

Super. I am jealous because the next salt water is 600 km away

Robert Berdan
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Re: Germlings and marine things.

Post by Robert Berdan »

Interesting subjects, wish I had an ocean nearby. The darkfield microscopy really compliments the subjects.
Cheers
RB

micro_pix
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Re: Germlings and marine things.

Post by micro_pix »

.
Thanks for the kind comments.

Here are a few more things that ended up in the net.

This is a tip section of Ceramium echionotum - Banded Pincer Weed showing the tetrasporangia (egg producing areas) on the surface and some of the fertilised sporophytes that have been released.
Ceramium_echionotum.jpg
This is the sexual Medusa stage of the Hydromedusa Corymorpha nutans, It's about 2.5mm long.
Corymorpha_nutans.jpg
A tiny juvenille Neomysis integer which is comonly called a Mysid (or Opposum) shrimp. Not a true shrimp - around 3.5mm long, in esturine water.
Neomysis_-integer_2.jpg
and a close-up of Neomysis integer.
Neomysis_integer3.jpg
and this is a dead tip of a Ceramium sp. of Red Seaweed under UV excitation. It has lost it's chlorophyll so the photosynthetic accessory pigment phycoerythrin's yellow fluorescence dominates.
Ceramium.jpg

Macro_Cosmos
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Re: Germlings and marine things.

Post by Macro_Cosmos »

I really like that "not a true shrimp", looks kind of cute actually.

Saul
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Re: Germlings and marine things.

Post by Saul »

Neomysis integer is amazing !
Saul
μ-stuff

carlos.uruguay
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Re: Germlings and marine things.

Post by carlos.uruguay »

Super nice

KurtM
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Re: Germlings and marine things.

Post by KurtM »

Marine plankton always fascinates to me to no end, and these are splendid images, thank you for posting them. I totally agree with Dr Berdan: your darkfield really makes them pop. I particularly love the Mysid 'shrimp', with the pair of statocysts clearly visible in its tail. The head closeup is out of this world, just wonderful!
Cheers,
Kurt Maurer
League City, Texas

micro_pix
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Joined: Fri May 11, 2012 12:05 pm
Location: Southampton, Hampshire, UK

Re: Germlings and marine things.

Post by micro_pix »

Many thanks for the kind comments.

The variety of interesting things in one sample is remarkable.
KurtM wrote:
Tue Jul 07, 2020 6:19 pm
Marine plankton always fascinates to me to no end, and these are splendid images, thank you for posting them. I totally agree with Dr Berdan: your darkfield really makes them pop. I particularly love the Mysid 'shrimp', with the pair of statocysts clearly visible in its tail. The head closeup is out of this world, just wonderful!
Thanks Kurt, trying to find out what the shrimp was took some work! As you point out, the round statocysts on the inside of each "Uropod" at the tail end identifies it as a member of the Mysidae family. The species keys are tough as there are about 1000 species in 170 genera, habitat narrows the choices a lot and the shape and spine arrangement on the "Telson" (the central plate on the tail) is one of the useful morphological characteristics. Here's a closer view of the tail.
.
Tail section of Mysid Shrimp
Tail section of Mysid Shrimp
Last edited by micro_pix on Sun Jul 12, 2020 12:03 am, edited 3 times in total.

Smokedaddy
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Re: Germlings and marine things.

Post by Smokedaddy »

Excellent

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