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Topic: Giant clam

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	giant clam - HighBeam Encyclopedia (Site not responding. Last check: 2007-10-14)
		Giant clams are found in the South Pacific and Indian oceans, especially in the Great Barrier Reef.
		The algae live in the tissues of the clam's siphon and mantle; they are able to obtain the sunlight needed for photosynthesis because the clam lies with its valves opening upward and part of the thick, purple mantle extruding over the shell.
		Giant clams three metres (10 feet) across have always been a special delicacy for the people of the Marshall Islands, but are increasingly rare.
	www.encyclopedia.com /doc/1E1-giantcla.html (499 words)

	ADW: Tridacna gigas: Information
		Giant clams are found throughout the Tropical Indo-Pacific oceanic region, from the south China seas in the north to the northern coasts of Australia and from the Nicobar Islands in the west to Fiji in the east.
		Farmed giant clams are also sold for food (the adductor muscle is considered a delicacy) and for the aquarium trade.
		Giant clams are listed as vulnerable by the IUCN because of extensive collecting for food, aquaculture, and the aquarium trade.
	animaldiversity.ummz.umich.edu /site/accounts/information/Tridacna_gigas.html (729 words)

	PBS - The Voyage of the Odyssey - Track the Voyage - Kiribati
		This smaller species of giant clam is one of several different giant clam species found in tropical waters, and has exquisite iridescent blue and green mottling on the mantle.
		The species of Giant clam we have consistently encountered here in Kiribati are slightly smaller than the enormous 2-meter long specimens, the creatures that have captured our imagination from early Polynesian times to present day Hollywood, where stories are told of a divers hand or foot being trapped in a closing shell.
		Giant clams were once a regular component of most tropical pacific reefs, but have been exploited in many areas.
	www.pbs.org /odyssey/odyssey/20001101_log_transcript.html (577 words)

	Shedd Aquarium
		The giant clam has two siphons, or holes where water is sucked in or out, in the middle its mantle cavity, one that sucks water in and the other pushes water out.
		The tiny algae and the clam have a symbiotic relationship or partnership needed for survival.
		Since they can't move, giant clams have to spawn or release their gametes or sex cells into the water at the same time, in hopes that there will be enough gametes to fertilize each other.
	www.sheddaquarium.org /sea/fact_sheets.cfm?id=106 (1214 words)

	Giant clam - Wikipedia, the free encyclopedia
		In Japanese cuisine, Geoduck (mirugai) is sometimes referred to as "giant clam".
		The giant clam (Tridacna gigas) or traditionally, pa’ua, is the largest living bivalve mollusc.
		Today, it is generally acknowledged that the giant clam is neither aggressive nor particularly dangerous; while it is certainly capable of holding one fast in its grip, the shell's closing action is actually a defensive response, and far too slow to pose any reasonable threat.
	en.wikipedia.org /wiki/Giant_clam (371 words)

	The Tongan Community Giant Clam Sanctuaries
		In the case of the giant clams, individuals had to overcome their personal desire to kill the clams in the sanctuary; even if they were very hungry or wanted to sell the meat for money they truly needed.
		The clam came from the first settlement of juveniles from the sanctuary and is the same age as the girl.
		The loss of the giant clams throughout the Pacific is tied to a widespread lack of appreciation or understanding of the coral reef environment combined with a rapid increase in the availability of tools to destroy the coral reef habitats.
	www.tellusconsultants.com /tongan.html (6906 words)

	Giant Clams of the Great Barrier Reef (Site not responding. Last check: 2007-10-14)
		This giant clam, tridacna crocea, is the smallest of the nine species, reaching no more than about 15 centimeters in length.
		Giant clams have often been overfished, but they grow fast and can be farmed successfully and even kept in aquariums.
		The clams get much of their food from filtering very fine particles from the water through their siphons, but they also get a lot of their nourishment from the algae, so if the algae die then the clam dies, too.
	www.richard-seaman.com /Underwater/Australia/GiantClams (806 words)

	Giant Clam (Site not responding. Last check: 2007-10-14)
		A giant clam eats sugars and proteins produced by the algae living inside their tissues; tiny, drifting plants and animals filtered from the water.
		Giant clams are related to other clams and mussels, snails, octopuses, and squids.
		Giant clams are now being farmed, which cut down on the numbers taken from the wild.
	www.promotega.org /fdt30021/giant_clam1.htm (99 words)

	Giant Clam -- Pictures, Animal Facts, Habitats, Video, Sound, Wallpaper -- National Geographic
		Giant clams achieve their enormous proportions by consuming the sugars and proteins produced by the billions of algae that live in their tissues.
		Giant clams have a wildly undeserved reputation as man-eaters, with South Pacific legends describing clams that lie in wait to trap unsuspecting swimmers or swallow them whole.
		The adductor muscle of the giant clam is actually considered a delicacy, and overharvesting of the species for food, shells, and the aquarium trade have landed it on at least one group's "vulnerable" list.
	channel.nationalgeographic.com /animals/invertebrates/giant-clam.html (418 words)

	Giant Clams in the Philippines (Site not responding. Last check: 2007-10-14)
		Giant clams are hermaphrodite, they have both male and female germ-glands.
		Giant clams have always been harvested by the local population in the past.
		All species of giant clams are listed now in the Appendix II of the Convention on the International Trade of Endangered Species of Wild Flora and Fauna (CITES).
	home.arcor.de /be/bethge/giantclam.htm (1384 words)

	Care2's Race for the Oceans
		The giant clam (Tridacna gigas) is an impressive and highly endangered resident of the tropical oceans.
		During the day, giant clams open their shells and spread out their soft tissues, letting sunlight feed the algae that lives on the clam's bodies in a symbiotic, or mutually beneficial, relationship.
		Giant clams are internationallyprotected under the Convention on International Trade of Endangered Species (CITES), because they are heavily exploited for human consumption and for the aquarium trade.
	oceans.care2.com /1giantclam.html (405 words)

	Giant Clam - WoWWiki
		Giant clams are sea creatures found on the sea floor.
		Giant clams in Darkshore, The Barrens and Westfall drop Clam Meat and a chance of dropping a Small Lustrous Pearl.
		Giant clams in Stranglethorn Vale will drop Giant Clam Meat and will always have a Blue Pearl, which is used to make Flash Bombs and in the elite Badlands quest Pearl Diving.
	www.wowwiki.com /index.php?title=Giant_Clam&printable=yes (170 words)

	Clam Culture
		Clams also act as natural biofilters as they take up dissolved ammonia and nitrate from the surrounding seawater to supply their symbiotic zooxanthellae with nitrogen for growth.
		Someday giant clams may be found in aquaculture tanks in a Moon Colony to supply food, excess oxygen in sunlight, and as biofilters for fish and other aquacultured animals.
		Until then, the aquaculture of giant clams for food and restocking of overharvested reefs is an example to follow for other endangered species.
	www.aquasearch.net.au /aqua/clamculture.htm (1255 words)

	IntroToClams
		Tridacnid clams are the most commonly kept clams in the reef aquarium.
		Watch the clam after introduction to ensure it is not being molested by any of the fish or invertebrate inhabitants.
		A new clam will frequently have tasty stuff on its shell that is new to the tank and so it is not uncommon for fish to show an interest in it when first introduced and should not be a cause for concern as long as they do not bite at and tear the mantle.
	www.reefcorner.com /introtoclams.htm (685 words)

	Fish and Aquatic Invertebrates » Saltwater Inverts » Clam - Giant Main Page
		Giant Clams have a symbiotic relationship with tiny algae called zooxanthellae that produce food for their hosts.
		This means that Giant Clams can produce their own food photosynthetically and should not be fed. It also means that Giant Clams require bright light and generally need to be placed near the surface of an aquarium to ensure sufficient light reaches them.
		One Giant Clam that is not healthy, and releases its gametes, may cause all Giant Clams in the area to release gametes.
	www.centralpets.com /animals/fish/saltwater_inverts/swi1812.html (1013 words)

	Augsburg College: Aquaria: Giant Clam (Site not responding. Last check: 2007-10-14)
		A juvenile giant clam (Tridacna derasa) in the reef aquarium.
		The brown tubular creatures to the left of the giant clam are nocturnal zooanthid anemones in the genus Isaurus.
		Giant clams are commonly eaten by humans in the Indo-Pacific region, and overcollecting by burgeoning human populations have driven these clams to the brink of extinction over much of their natural range.
	www.augsburg.edu /home/biology/aquaria/Initial2PhotoSets/blue.html (374 words)

	Saltwater Aquaria Magazine: Giant Clams Care
		Giant Clams are one of the most sought after invertabres for the reef aquarium.
		There are many places selling captive bred Giant Clams now, and they should obviously be a first choice, due to being more adaptive and hardier, and to conserve the reefs of course.
		Giant Clam meat is a delicacy in many countries, and it has lead to a shortage of wild clams.
	members.tripod.com /mark26/clam1.html (759 words)

	Fish and Aquatic Invertebrates » Saltwater Inverts » Clam - Derasa Main Page
		The photosynthetic Derasa Giant Clam does not need to be fed, but it is important to maintain levels of calcium, carbonates, and other trace elements in the tank in which your clam is kept.
		As with all giant clams, they do not need to be fed, creating most of their food through photosynthetic processes accomplished by symbiotic zooxanthellae living in the tissues of the clam.
		Once the clam is attached to a surface, you should not attempt to remove it, lest damage be caused to the byssal gland and associated tissues.
	www.centralpets.com /animals/fish/saltwater_inverts/swi1810.html (1055 words)

	Small giant clam - Tridacna maxima: More Information - ARKive
		A sessile mollusc, the small giant clam attaches itself to rocks and siphons water through its body, filtering it for phytoplankton, as well as extracting oxygen with its gills.
		The small giant clam is collected in small numbers for the shell trade, and may also be eaten (2).
		Research into clam farming, as well as into the ecology, growth rates and reproductive behaviour of the small giant clam is necessary to understand the conservation needs of this species.
	www.arkive.org /species/GES/invertebrates_marine/Tridacna_maxima/more_info.html (856 words)

	Giant clams (pa'ua) in the Cook Islands (Site not responding. Last check: 2007-10-14)
		Clams are relatively slow growing and the species introduced from Australia are only now coming into maturity at about ten years of age.
		Probably the most effective way to increase the number of clams in the lagoons is to manage existing stocks and their habitat and allow them to repopulate the lagoon naturally.
		Clam meat is a delicacy in the southern Cook Islands and an important food source in the northern group.
	www.spc.org.nc /coastfish/Countries/CookIslands/MMR2/Giant-clams.htm (549 words)

	GCManual
		Giant clams deprived of sunlight quickly die despite the presence of food in the water, indicating the importance of zooxanthelle to clam survival.
		Giant clam hatcheries should be equipped with a dissolved oxygen meter, a pH meter and a salinity refractometer to monitor these water quality parameters (suppliers 1 and 5 in Appendix A).
		Giant clams are epidemic spawners and are stimulated to spawn by the presence of giant clam gametes (eggs or sperm) in the water.
	library.kcc.hawaii.edu /CTSA/publications/GCManual.html (10152 words)

	A GIANT CLAM STOCK SURVEY AND PRELIMINARY INVESTIGATION OF PEARL OYSTER RESOURCES IN THE TOKELAU ISLANDS
		This mantle surface is exposed to sunlight and thus the symbiosis requires that giant clams live in shallow (<20m where the water is clear) tropical seas.
		Giant clams naturally grow amongst coral reefs although large individuals may sometimes be found on sand, probably an example of clams growing up in the protection of a thicket of branching Acropora sp.
		Reproduction in giant clams was first investigated for biological interest (Stephenson, 1931; Wada, 1954) but recently reproduction and larval biology have been studied for the mariculture potential (Beckvar, 1981; Gwyther and Munro, 1981; Heslinga et al., 1984; Braley, 1986; Crawford et al., 1986; Braley et al., 1988).
	www.fao.org /docrep/field/003/AC293E/AC293E01.htm (2399 words)

	Monterey Bay Aquarium: Online Field Guide
		Giant clams are now being farmed, which can cut down on the numbers taken from the wild.
		As their name implies, giant clams are the largest clams in the world.
		Once a giant clam settles into a place and begins to grow, it stays permanently attached to that spot for life.
	www.mbayaq.org /efc/living_species/?hOri=1&inhab=411 (233 words)

	Clam - Wikipedia, the free encyclopedia
		While the term "clam" has no taxonomic significance in biology, in general use, the term clam refers to a bivalve (a mollusk whose body is protected by two symmetrical shells) that is not an oyster, mussel, or a scallop, and that has a more-or-less oval shape, or alternately, to a freshwater mussel (Merriam-Webster Dictionary.).
		An exception to the oval shape is the razor clam, which has an elongate shell suggesting a straight razor.
		Clam chowder is a popular soup in the U.S. and Canada.
	en.wikipedia.org /wiki/Clam (299 words)

	Vanuatu Giant Clam Sanctuaries
		He had been a fisher since he was a boy and knew very well that the fish, dugongs, turtles and giant clams around his island were vanishing.
		The giant clams, in particular, were vanishing rapidly.
		Nobody stole the clams, and by 1998 there were over 1100 clams in the sanctuary; more than in any other community sanctuary in the Pacific.
	www.unescap.org /mced2000/pacific/background/vanclam.htm (408 words)

	Clam- Enchanted Learning Software
		Clams are animals that burrow under the sea floor.
		When a clam is threatened, most clams will pull their soft body into into the shells and close the shells tightly for protection.
		Clams use their tube-like siphon to draw in water, from which they extract oxygen and filter plankton (tiny plants that they eat).
	www.enchantedlearning.com /subjects/invertebrates/bivalve/Clamprintout.shtml (221 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		Great sermons and speaches were made, praising the Clam of Peace, and condemning the ignorant inhabitants of the neighboring village for not appreciating such glorious things.
		He was too interested in the barnacles attached to the clam's shell to be caught up in their peacefull pillaging and so was the only villager left on the beach when the clam finally spoke.
		"I am the Clam of Math." And the giant clam taught the child many wonderfull things regarding geometry and set theory and combinatorics that night, untill the little boy finally fell asleep there on the beach, under the full moon, his head awhirl with the mysteries of mathematics.
	www.cca.org /dave/fiction/clam (438 words)

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