Tuesday, August 11, 2020

Sea fireflies?

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  1. begin quote from:https://www.bing.com/search?q=Vargula+hilgendorfii&FORM=hpcapt&filters=HpDate:%2220200811_0700%22


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    August 11, 2020
    Sea fireflies at the seashore

    Sea fireflies at the seashore

    Sea fireflies may glow like the fireflies that send out backyard beacons at night, but that's about where the similarities end between the two species. Scientists call the bioluminescent crustaceans washing over these rocks Vargula hilgendorfii, and here in Japan they're commonly known as umi-hotaru. They're visible at night in the shallow sea waters and beaches of Japan, although other species of the genus Vargula can be seen glowing in the waters of the Gulf of Mexico, the Caribbean Sea, and off the California coast.

    Each sea firefly is about the size of a sesame seed, yet as a group they set off an impressive aura. Their glow intensifies depending on the salinity of the sea water and other physical stimuli. Besides lighting up the shores at night, the crustaceans do their part cleaning up the beach by munching on sandworms and dead fish. That's just one less thing for beachcombers to worry about during a glimmering seaside walk.

    Quote of the day

    The fireflies flew up into the sky, free. I watched them until I could no longer tell them apart from the stars.
    —Paul Pen

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  4. Vargula hilgendorfii - Wikipedia

    https://en.wikipedia.org/wiki/Vargula_hilgendorfii
    Vargula hilgendorfii, sometimes called the sea-firefly and one of three bioluminescent species known in Japan as umi-hotaru (海蛍), is a species of ostracod crustacean. It is the only member of genus Vargula to inhabit Japanese waters; all other members of its genus inhabit the Gulf of Mexico, the Caribbean Sea, and waters off the coast of California. V. hilgendorfii was formerly more common, but its numbers have fallen significantly. 
    V. hilgendorfii is a small animal, only 3 millimetres long. It is nocturnal and lives in the sand at the bottom of shallow water. At night, it feeds actively.

    Bioluminescence
    V. hilgendorfii is known for its bioluminescence. It produces a blue-coloured li…
    Wikipedia · Text under CC-BY-SA license

  5. Vargulin - Wikipedia

    https://en.wikipedia.org/wiki/Vargulin
    Vargulin, also called Cypridinid luciferin, Cypridina luciferin, or Vargula Luciferin, is the luciferin found in the ostracod Cypridina hilgendorfii, also named Vargula hilgendorfii. These bottom dwelling ostracods emit a light stream into water when disturbed presumably to deter predation. Vargulin is also used by the midshipman fish, Porichthys.
    Wikipedia · Text under CC-BY-SA license

  6. Cypridina hilgendorfii | ostracod | Britannica

    https://www.britannica.com/animal/Cypridina-hilgendorfii
    Vargula hilgendorfi (also known as Cypridina hilgendorfii), which is 3 to 4 mm (about 1/6 inch) long, become bioluminescent when disturbed. Many squids emit luminous clouds when threatened. Some species of fish emit light in distinctive patterns or at regular intervals, permitting individuals to form or maintain schools.

  7. The Sea Firefly (Vargula hilgendorfii)

    https://myintrepidadventures.blogspot.com/2012/04/...
    Apr 09, 2012 · hilgendorfii is a small animal, only 3 mm long, roughly the size and shape of a sesame seed. The female tends to be larger than the male. It is nocturnal and lives in the sand at the bottom of shallow water. It is both a scavenger and a predator, mainly dining on sandworms and dead fish.

  8. Scilit | Article - Utilization of Vargula Hilgendorfii as ...

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