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Truxor in action on a freshwater lake. An aquatic weed harvester, also known as a water mower, [1] [2] mowing boat and weed cutting boat, [3] is an aquatic machine specifically designed for inland watercourse management to cut and harvest underwater weeds, reeds and other aquatic plant life. [4]
The electricity causes muscle spasms that damage the vertebrae. For unknown reasons, [5] this is more common and severe in longer fish. [6] Due to the conductivity of saltwater, electrofishing is not an effective tool for catching saltwater fish, as the electricity travels through the water, rather than through the fish. [7]
Aquaponics is a food production system that couples aquaculture (raising aquatic animals such as fish, crayfish, snails or prawns in tanks) with hydroponics (cultivating plants in water) whereby the nutrient-rich aquaculture water is fed to hydroponically grown plants.
[5] [6] It is very similar to the technique used on frogs in laboratories called spiking or pithing. Another technique [clarification needed] in APEC Air shipment of live and fresh fish and seafood guidelines is described as follows: "A cut is made toward the front of the flatfish severing the major artery and the spinal cord. Placement of the ...
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The term fish processing refers to the processes associated with fish and fish products between the time fish are caught or harvested, and the time the final product is delivered to the customer. Although the term refers specifically to fish, in practice it is extended to cover any aquatic organisms harvested for commercial purposes, whether ...
Rainwater capture and storage system, Mexico City campus, Monterrey Institute of Technology and Higher Education Cistern, Mission District, San Francisco, California Rainwater capture, Gibraltar East Side, 1992 Home, with rain collection jars on roof, Panarea, Aeolian Islands, north of Sicily, Italy [7] Rainwater harvesting and hand washing system for a toilet in Kenya.
In very small animals, plants and bacteria, simple diffusion of gaseous metabolites is sufficient for respiratory function and no special adaptations are found to aid respiration. Passive diffusion or active transport are also sufficient mechanisms for many larger aquatic animals such as many worms, jellyfish, sponges, bryozoans and similar ...
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