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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.
The orca (Orcinus orca), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. It is the only extant species in the genus Orcinus and is recognizable by its black-and-white patterned body. A cosmopolitan species, it is found in diverse marine environments, from Arctic to Antarctic regions to tropical seas.
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 ...
Drone videos of gray whales off Oregon have revealed new details about how the marine mammals find food. The findings were described in studies this summer. Drone video of gray whales offers new ...
Orcinus species, like many other predatory marine lineages, may have fished up the food chain, with the apparently more primitive O. citoniensis able to hunt large fish, and the modern killer whale's ability to hunt large whales. [4] The Middle Pleistocene deposits indicate a warm temperate climate, and temperate forests of land.
A diagram that sets out the intricate network of intersecting and overlapping food chains for an ecosystem is called its food web. [6] Decomposers are often left off food webs, but if included, they mark the end of a food chain. [6] Thus food chains start with primary producers and end with decay and decomposers.
A killer whale was spotted balancing a salmon on its head. It’s not clear what the behavior means, but orcas were observed doing the same thing in the 1980s.
The killer whale pod in Mexico hunts and attacks much larger whale sharks by targeting them from below, a study finds Killer Whales Are Hunting Whale Sharks — the Largest Fish in the World, New ...