by neufer » Wed May 03, 2017 2:04 pm
thayer wrote:
It looks like a copepod, with the antennae, eye and some of the innards.
The fact that it is pictured above the ocean is appropriate also!
https://en.wikipedia.org/wiki/Copepod wrote:
<<Copepods (meaning "oar-feet") are a group of small crustaceans found in the sea and nearly every freshwater habitat. Some species are planktonic (drifting in sea waters), some are benthic (living on the ocean floor), and some continental species may live in limnoterrestrial habitats and other wet terrestrial places, such as swamps, under leaf fall in wet forests, bogs, springs, ephemeral ponds, and puddles, damp moss, or water-filled recesses (phytotelmata) of plants such as bromeliads and pitcher plants. Many live underground in marine and freshwater caves, sinkholes, or stream beds.
The second pair of cephalic appendages in free-living copepods is usually the main time-averaged source of propulsion, beating like oars to pull the animal through the water. Some copepods have extremely fast escape responses when a predator is sensed and can jump with high speed over a few millimetres. Many species have neurons surrounded by myelin (for increased conduction speed), which is very rare among invertebrates. Even rarer, the myelin is highly organized, resembling the well-organized wrapping found in vertebrates (Gnathostomata). Despite their fast escape response, copepods are successfully hunted by slow-swimming seahorses, which approach their prey so gradually, it senses no turbulence, then suck the copepod into their snout too suddenly for the copepod to escape.
Copepods feed directly on phytoplankton, catching cells singly. Some of the larger species are predators of their smaller relatives. Many benthic copepods eat organic detritus or the bacteria that grow in it, and their mouth parts are adapted for scraping and biting. Herbivorous copepods, particularly those in rich, cold seas, store up energy from their food as oil droplets while they feed in the spring and summer on plankton blooms. These droplets may take up over half of the volume of their bodies in polar species. Many copepods (e.g., fish lice) are parasites, and feed on their host organisms.>>
http://ssep.ncesse.org/communities/experiments-selected-for-flight/selected-experiments-on-ssep-mission-3-to-iss/ wrote:
<<The Student Spaceflight Experiments Program is proud to report that there were a total of 1,466 proposals submitted from student teams participating in Mission 3 to ISS—the greatest number of proposals received for a SSEP flight opportunity to date. On November 27-28, 2012, the Step 2 Review Board met at the Smithsonian’s National Air and Space Museum, reviewed all 51 finalist proposals, and selected a total of 17 flight experiments. All 51 finalist experiment teams are provided below:
HONORABLE MENTION FINALISTS:
Copepod Growth in Microgravity
Grade 8, Wilde Lake Middle School
Co-Principal Investigators: Cyrus Jenkins and Calvin Kuang
Teacher Facilitators: Damisha Drakes and Douglas Spicher, Science Teachers
Proposal Summary:
Our SSEP proposal is to see how copepod growth is affected in micro gravity. We are doing this because copepods are the base of many food chains and if they can survive, then other life may be able to as well. If this works, humanity may be able to create entire ecosystems in space and perhaps retrieve food from fish farms and such. Not to mention we will also be able to possible generate oxygen in the depths of space. Copepods are a type of zooplankton and their diet includes microscopic algae, diatoms, and bacteria. In space, we plan to keep them alive by putting algae in ampoules and having the astronaut break those ampoules in order to feed the copepods. Once the copepods return to Earth, we will analyze their growth as well as how many of them remain. Then, we will compare these test results to those we’ve gathered on Earth.
[quote="thayer"]
It looks like a copepod, with the antennae, eye and some of the innards.
The fact that it is pictured above the ocean is appropriate also![/quote][quote=" https://en.wikipedia.org/wiki/Copepod"]
[float=left][img3=""]https://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Copepodkils.jpg/1024px-Copepodkils.jpg[/img3][/float]<<Copepods (meaning "oar-feet") are a group of small crustaceans found in the sea and nearly every freshwater habitat. Some species are planktonic (drifting in sea waters), some are benthic (living on the ocean floor), and some continental species may live in limnoterrestrial habitats and other wet terrestrial places, such as swamps, under leaf fall in wet forests, bogs, springs, ephemeral ponds, and puddles, damp moss, or water-filled recesses (phytotelmata) of plants such as bromeliads and pitcher plants. Many live underground in marine and freshwater caves, sinkholes, or stream beds.
The second pair of cephalic appendages in free-living copepods is usually the main time-averaged source of propulsion, beating like oars to pull the animal through the water. Some copepods have extremely fast escape responses when a predator is sensed and can jump with high speed over a few millimetres. Many species have neurons surrounded by myelin (for increased conduction speed), which is very rare among invertebrates. Even rarer, the myelin is highly organized, resembling the well-organized wrapping found in vertebrates (Gnathostomata). Despite their fast escape response, copepods are successfully hunted by slow-swimming seahorses, which approach their prey so gradually, it senses no turbulence, then suck the copepod into their snout too suddenly for the copepod to escape.
Copepods feed directly on phytoplankton, catching cells singly. Some of the larger species are predators of their smaller relatives. Many benthic copepods eat organic detritus or the bacteria that grow in it, and their mouth parts are adapted for scraping and biting. Herbivorous copepods, particularly those in rich, cold seas, store up energy from their food as oil droplets while they feed in the spring and summer on plankton blooms. These droplets may take up over half of the volume of their bodies in polar species. Many copepods (e.g., fish lice) are parasites, and feed on their host organisms.>>[/quote][quote=" http://ssep.ncesse.org/communities/experiments-selected-for-flight/selected-experiments-on-ssep-mission-3-to-iss/"]
<<The Student Spaceflight Experiments Program is proud to report that there were a total of 1,466 proposals submitted from student teams participating in Mission 3 to ISS—the greatest number of proposals received for a SSEP flight opportunity to date. On November 27-28, 2012, the Step 2 Review Board met at the Smithsonian’s National Air and Space Museum, reviewed all 51 finalist proposals, and selected a total of 17 flight experiments. All 51 finalist experiment teams are provided below:
HONORABLE MENTION FINALISTS:
Copepod Growth in Microgravity
Grade 8, Wilde Lake Middle School
Co-Principal Investigators: Cyrus Jenkins and Calvin Kuang
Teacher Facilitators: Damisha Drakes and Douglas Spicher, Science Teachers
Proposal Summary: [i][color=#0000FF]Our SSEP proposal is to see how copepod growth is affected in micro gravity. We are doing this because copepods are the base of many food chains and if they can survive, then other life may be able to as well. If this works, humanity may be able to create entire ecosystems in space and perhaps retrieve food from fish farms and such. Not to mention we will also be able to possible generate oxygen in the depths of space. Copepods are a type of zooplankton and their diet includes microscopic algae, diatoms, and bacteria. In space, we plan to keep them alive by putting algae in ampoules and having the astronaut break those ampoules in order to feed the copepods. Once the copepods return to Earth, we will analyze their growth as well as how many of them remain. Then, we will compare these test results to those we’ve gathered on Earth.[/color][/i][/quote]