R2K

 
Sea urchin Egg SEM 1030X
Sunday, July 31, 2005

This is an image from work. What you see here is a sea urchin egg, but just the egg (never met a sperm so to speak). The big grid it is on is really very fine mesh, four times as small as a window screen would be.

It is a pretty funny story, but when you mate urchins in the lab, you have to stimulate them into producing the sperm and eggs. You do this by injecting them with a small amount of, basically, salt water. And this puts them in the mood, as it were, and in a few min. you get either orange or milky ppt. And the rest is history. In a few min, the microscopic stork comes and you have a developing sea urchin embryo.
posted by High Power Rocketry @ Sunday, July 31, 2005  
11 Comments:
  • At 7/31/05, 9:15 PM, Blogger Qivan said…

    This is so strange, I had sushi last night but have never been adventurous enough to order sea urchin.

    I keep imagining a drowned Victorian child.

     
  • At 7/31/05, 11:36 PM, Blogger tisjewel said…

    Hey Alex, thanks for your comment on my blog!

    I love sea urchin sushi, in fact it's one of my favorite types, and never once (until now) stopped to think about how their procreation worked (in lab or otherwise), lol.

     
  • At 7/31/05, 11:59 PM, Blogger R2K said…

    Yeah I also like uni. It is expensive, but once a year I get uni at a really good place with a raw quale egg on top.

    A side of Oshinko... And thats what sushi is about I think.

     
  • At 8/1/05, 4:50 AM, Blogger MIN said…

    Hi, from Lisbon
    ;o)

     
  • At 8/1/05, 7:55 AM, Blogger Chhuy-Ing said…

    Hi from Paris ;)
    Nice photos and nice cat :)

     
  • At 8/1/05, 2:36 PM, Blogger new york on time said…

    Hi Alex! In Buzios, Brazil, I used to dive with friends to catch sea urchins and eat them alive with lime and black pepper, on the boat. They're wonderful. best, Jorge

     
  • At 8/17/05, 1:10 PM, Blogger Sam Freedom said…

    Will the salt water thing work with human females? You know, now that I think of it, being near the beach does cause some women to act mighty unusual...hmmmmm

    Sam
    the coolest guy on the planet

     
  • At 8/17/05, 1:10 PM, Blogger Sam Freedom said…

    Will the salt water thing work with human females? You know, now that I think of it, being near the beach does cause some women to act mighty unusual...hmmmmm

    Sam
    the coolest guy on the planet

     
  • At 8/18/05, 12:23 AM, Blogger R2K said…

    Yeah, stabbing women in the abdomen with a needle of salt water will make them ovulate.

    Frankly im shocked you didnt already know this.

     
  • At 8/19/05, 9:12 AM, Blogger Gwyn said…

    Well, whatever floats their boat, I guess! LOL

     
  • At 5/29/06, 3:49 AM, Blogger Not found said…

    Hola, Alex! gracias por visitar mi blog.

    En mi universidad todos los años se hace una práctica de fecundación de erizos, pero como vivimos a 400 km del mar mediterráneo muchas veces llegan muertos y el profesor tiene que volver a por ellos! Por lo demás es un fenómeno fascinante, y se puede ver con un sencillo microscopio.

     
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