Filter Feeder

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filter feeder

[′fil·tər ‚fēd·ər]
(invertebrate zoology)
A microphagous organism that uses complex filtering mechanisms to trap particles suspended in water.

Filter Feeder


an aquatic animal that feeds on minute planktonic organisms or suspended particles, which it filters from the water. Active filter feeders, including many crustaceans, tunicates, and whalebone whales, draw water through external or internal filtration organs by moving their cilia or extremities or contracting their muscles. Passive filter feeders make use of water currents. For example, sea lillies have branches with numerous feathery outgrowths, which they spread in the direction of the current, creating a complex, immobile filtration network. Filter feeders often combine suspension feeding with deposit feeding. Filter feeders include many marine and freshwater species. Some species, for example, marine mussels, play an important role in purifying sea water of slime in coastal regions.

References in periodicals archive ?
Giant clams are autotrophic and heterotrophic organisms, in contrast to several marine bivalves that have filter feeding as their sole energy source.
Siphusauctum has a long stem, with a calyx -- a bulbous cup-like structure -- near the top that encloses an unusual filter feeding system and a gut.
DA can affect many different species, most often by the contamination of shellfish beds and planktivorous fish via filter feeding.
The study revealed a rich community of more than 370 types of sponge and other filter feeding organisms, many are likely to be new species.
Hardy filter feeding species carpeted the marine realm.
Vibrio vulnificus is a marine bacterium that is commonly accumulated in shellfish during the filter feeding process.
an increase in protozoa density resulted in a shift toward predation by filter feeding, while an increase in substrate-bound resources resulted in a shift toward predation by browsing.
These include hand-picked produce, peeled or cut produce, sprouts, filter feeding shellfish and low-acid canned foods.
Baleen whales have since lost these sharp teeth, and rely now on filter feeding to satiate their hunger.
There is also a possible threat to human health where, for example, biotoxins are ingested by filter feeding organisms, accumulate within their flesh, and then are transferred higher up the food chain to human consumption level, for example through the consumption of shellfish.
According to a report in National Geographic News, the fossil whale, thought to be between 25 and 28 million years old, hints that mud sucking might have been a precursor to the filter feeding used by today's baleen whales.