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A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
A food web model is a network of food chains. Each food chain starts with a primary producer or autotroph, an organism, such as an alga or a plant, which is able to manufacture its own food. Next in the chain is an organism that feeds on the primary producer, and the chain continues in this way as a string of successive predators.
Food chain in a Swedish lake. Osprey feed on northern pike, which in turn feed on perch which eat bleak which eat crustaceans.. A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales), detritivore (such as earthworms and woodlice ...
The black ruff (Centrolophus niger) is a medusafish, the only member of the genus Centrolophus. It is a pelagic fish found in all tropical and temperate oceans at depths of 0 to 1,000 m (0 to 3,280 ft). Its length is typically up to 60 cm (24 in), but it may reach 150 cm (60 in).
A shed carapace of a lady crab, part of the hard exoskeleton Body structure of a typical crustacean – krill. The body of a crustacean is composed of segments, which are grouped into three regions: the cephalon or head, [5] the pereon or thorax, [6] and the pleon or abdomen. [7]
"Cephalic fins": The "horns" of manta rays and their relatives, sometimes called cephalic fins, are actually a modification of the anterior portion of the pectoral fin. Pelvic/Ventral fins: Found in pairs on each side ventrally below the pectoral fins, pelvic fins are homologous to the hindlimbs of tetrapods. They assist the fish in going up or ...
This is a list of freshwater fish pursued by recreational anglers. Alligator gar; American paddlefish; Amur catfish; Amur pike; Arapaima; Arctic grayling; Asian arowana; Asp (fish) Atlantic salmon; Atlantic sturgeon; Australian bass; Australian grayling; Bagarius yarrelli; Barramundi; Basa (fish) Bayad; Beluga (sturgeon) Biara; Black arowana ...
In a 100-gram (3 + 1 ⁄ 2-ounce) reference serving of whelk, there are 570 kilojoules (137 kilocalories) of food energy, 24 g of protein, 0.34 g of fat, and 8 g of carbohydrates. [ 3 ] Dog whelk , a predatory species, was used in antiquity to make a rich red dye that improves in color as it ages.