filter feeding

      in zoology, a form of food procurement in which food particles or small organisms are randomly strained from water. Filter feeding is found primarily among the small- to medium-sized invertebrates but occurs in a few large vertebrates (e.g., flamingos, baleen whales).

      In bivalves such as the clam, the gills, larger than necessary for respiration, also function to strain suspended material out of the water. Hairlike filaments called cilia produce a water current over the gills, and other cilia move the trapped food particles along the gill face and into food grooves. Many bristle-worms, such as the fan worm Sabella (peacock worm), have ciliated tentacles near the mouth, which entrap passing food particles. The limbs of certain crustaceans, including the brine shrimp Artemia, bear hairlike setae that filter tiny organisms as the animal swims.

      The blue whale has baleen (whalebone), or whalebone, in place of teeth. These narrow vertical plates, which hang inside the mouth cavity, are fringed on the inner edges to trap the shrimplike krill engulfed by the whale in a mouthful of water.

* * *


Universalium. 2010.

Look at other dictionaries:

  • filter-feeding — adjective Zoology (of an aquatic animal) feeding by filtering out plankton or nutrients suspended in the water. Derivatives filter feeder noun …   English new terms dictionary

  • filter-feeding — filˈter feeding noun • • • Main Entry: ↑filter …   Useful english dictionary

  • filter feeding — …   Useful english dictionary

  • feeding behaviour — Any action of an animal directed toward obtaining nutrients. Each species evolves methods of searching for, obtaining, and ingesting food for which it can successfully compete. Some species eat only one type of food, others a variety. Among… …   Universalium

  • Filter feeder — [ left|thumb|200px|Krill feeding under high phytoplankton concentration (slowed down by a factor of 12).] Filter feeders (also known as suspension feeders) are animals that feed by straining suspended matter and food particles from water,… …   Wikipedia

  • List of feeding behaviours — Feeding is the process by which organisms, typically animals, obtain food. Terminology often uses either the suffix vore from Latin vorare, meaning to devour , or phagy, from Greek φαγειν, meaning to eat . Mosquito drinking blood …   Wikipedia

  • Raised-cosine filter — The raised cosine filter is a particular electronic filter, frequently used for pulse shaping in digital modulation due to its ability to minimise intersymbol interference (ISI). Its name stems from the fact that the non zero portion of the… …   Wikipedia

  • CSS filter — A CSS Filter is a coding technique used to hide or show CSS markup depending on the browser s brand and/or version number. Browsers have different interpretations of CSS behavior and different levels of support for the W3C standards. Web… …   Wikipedia

  • animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …   Universalium

  • Pelagic fish — A school of large pelagic predator fish (giant trevally) sizing up a school of small pelagic prey fish (anchovies) Pelagic fish live near the surface or in the water column of coastal, ocean and lake waters, but not on the bottom of the sea or… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.