Fascination Sobre grupo coral

Fascination Sobre grupo coral

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Submarine springs found along the coast of Mexico's Yucatán Peninsula produce water with a naturally low pH (relatively high acidity) providing conditions similar to those expected to become widespread as the oceans absorb carbon dioxide.

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If the stressful conditions persist, the polyp eventually dies.[23] Zooxanthellae are located within the coral cytoplasm and due to the algae's photosynthetic activity the internal pH of the coral can be raised; this behavior indicates that the zooxanthellae are responsible to some extent for the metabolism of their host corals [24] Reproduction[edit]

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Polyps feed on a variety of small organisms, from microscopic zooplankton to small fish. The polyp's tentacles immobilize or kill prey using stinging cells called nematocysts. These cells carry venom which they rapidly release in response to contact with another organism. A dormant nematocyst discharges in response to nearby prey touching the trigger (cnidocil).

They secrete calcium carbonate to form hard skeletons that fonte become the framework of the reef. However, not all reef-building corals in shallow water contain zooxanthellae, and some deep water species, living at depths to which light cannot penetrate, form reefs aqui but do not harbour the symbionts.[32]

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Over many generations, the colony thus creates a large skeleton characteristic of the species. Individual heads grow by asexual reproduction of polyps. Corals also breed sexually by spawning: polyps of the same species release gametes simultaneously over aqui a period of one to several nights around a full moon.

Some soft corals encrust other sea objects or form lobes. Others are tree-like or whip-like and chem a central axial skeleton embedded at its base in the matrix of the supporting branch.[nove] These branches are composed either of a fibrous protein called gorgonin or of a calcified material.

Many governments now prohibit removal of coral from reefs, and inform coastal residents about reef protection and ecology.

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