Germlings and marine things.
Moderators: rjlittlefield, ChrisR, Chris S., Pau
Germlings and marine things.
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.
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These are the germlings of the seaweed Sargassum muticum - Japanese Wireweed, they are around 150 microns long.
and this is a marine harpacticoid Copepod, it's around 700 microns.
The images were taken using darkfield with the led/flash unit supplied by Saul and were stacked in Zerene Stacker
The first is the larvae of the shell-boring polychaete, Polydora hoplura - a view of the underside.
.
These are the germlings of the seaweed Sargassum muticum - Japanese Wireweed, they are around 150 microns long.
and this is a marine harpacticoid Copepod, it's around 700 microns.
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.
Re: Germlings and marine things.
Very nice.
Re: Germlings and marine things.
.
Thanks.
Thanks.
Re: Germlings and marine things.
Super. I am jealous because the next salt water is 600 km away
- Robert Berdan
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Re: Germlings and marine things.
Interesting subjects, wish I had an ocean nearby. The darkfield microscopy really compliments the subjects.
Cheers
RB
Cheers
RB
Re: Germlings and marine things.
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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.
This is the sexual Medusa stage of the Hydromedusa Corymorpha nutans, It's about 2.5mm long.
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.
and a close-up of Neomysis integer.
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.
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.
This is the sexual Medusa stage of the Hydromedusa Corymorpha nutans, It's about 2.5mm long.
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.
and a close-up of Neomysis integer.
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.
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Re: Germlings and marine things.
I really like that "not a true shrimp", looks kind of cute actually.
- carlos.uruguay
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Re: Germlings and marine things.
Super nice
Re: Germlings and marine things.
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
Kurt Maurer
League City, Texas
Re: Germlings and marine things.
Many thanks for the kind comments.
The variety of interesting things in one sample is remarkable.
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The variety of interesting things in one sample is remarkable.
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.KurtM wrote: ↑Tue Jul 07, 2020 6:19 pmMarine 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!
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Last edited by micro_pix on Sun Jul 12, 2020 12:03 am, edited 3 times in total.
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Re: Germlings and marine things.
Excellent