The scientific framework for using condition index as ecological indicator is defined. Bivalve molluscs are abundant in marine and freshwater ecosystems and perform important ecological functions. A bivalve’s body includes a nervous system, a digestive system, and a heart. Bivalve ecology is a large field of study, but few comparisons among aquatic ecosystems or lifestyles have been conducted. Term. Siphons in molluscs are tube-like structures in which water flows (or more rarely in which air flows). The word 'bivalve' comes from the Latin bis ('two') and valvae('leaves of a door'). (ˈbaɪˌvælv ) noun. bivalves. Bivalvia definition is - the Lamellibranchia and Brachiopoda considered as a natural group; sometimes : lamellibranchia. However, information on the diet of filter feeding bivalves in estuarine ecosystems is uncertain, as estuarine waters contain particulate matter from a range of sources and as bivalves are opportunistic feeders. The name bivalvecomes from Latin as most biological classifications do. Some knowledge of bivalve biology is necessary to understand operations of a bivalve hatchery and to assist in solving problems that arise. (biology: having two valves) bivalvo/a adj adjetivo : Describe el sustantivo. The majority are filt… clams, mussels, oysters, and other bivalves [+] more examples [-] hide examples [+] Example sentences [-] Hide examples — bivalve adjective. PLAY. Level. Definition. 2. In bivalve: Locomotion. Clams, oysters, scallops, and mussels are bivalves. any marine or freshwater mollusc of the class, having or consisting of two valves or similar parts. Yes, enough to tell a bivalve when I see one: should like to have a ‘dozen fried’ before me now. WDFW - Shellfish: Geoduck clam. ... Additional Biology Flashcards . We Asked, You Answered. Its name is a reference to the two shells, called valves , that protect its soft inner body parts. chromatophore. “Monolith” vs. “Megalith”: What’s The Difference? A principal limitation to assessing genetic improvement and domestication is a lack of basic, detailed, mariculture statistics. bivalve definition: 1. a type of mollusc, such as an oyster, that has its body inside two connected shells: 2. having…. STUDY. 4 [April 1901], Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6. Also called lamellibranch, pelecypod. The name bivalve comes from Latin as most biological classifications do. Many bivalve species play important roles in aquatic and marine ecosystems by filtering the water and serving as habitat and prey for a variety of sea life. bivalve meaning: 1. a type of mollusc, such as an oyster, that has its body inside two connected shells: 2. having…. Bivalve molluscs are abundant in marine and freshwater ecosystems and perform important ecological functions. An internal organ called the mantle secretes calcium carbonate so that as the inner invertebrate grows, the outer shell provides a roomier home. A bivalve is an animal that has two hinged shells, which are called valves. All bivalves are mollusks. Biology. Bivalves have epifaunal or infaunal lifestyles but are largely filter feeders that couple the water column and benthos. Not Applicable. Basic bivalve biology: taxonomy, anatomy and life history 2.1 TAXONOMY AND ANATOMY 2.1.1 Introduction. 2. bivalve. spicules: Definition. Mantle, in biology, soft covering, formed from the body wall, of brachiopods and mollusks; also, the fleshy outer covering, sometimes strengthened by calcified plates, of barnacles. ^ Washington Department of Fish and Wildlife. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. Meaning of bivalve. 'Bi' means two and 'valve' is really 'valvae', which means 'leaves of a door'. Created. Bivalves are a group of mollusks that includes clams, scallops, oysters, mussels, razor shells, cockles, venus shells, borers, trough shells and many others (some of which live in the deep sea and have yet to be identified).Bivalves are the second most diverse group of mollusks, ranking only behind gastropods in number of species. any marine or freshwater mollusc of the class Pelecypoda ( formerly Bivalvia or Lamellibranchia ), having a laterally compressed body, a shell consisting of two hinged valves, and gills for respiration. The Ostracoda have the body enclosed in a bivalve shell-covering, and normally unsegmented. Term. Bivalves are found in both freshwater and marine environments. Learner's definition of BIVALVE [count] biology: a sea animal that has a shell with two movable parts connected by a hinge. hemolymph. The class Bivalvia is also called Pelecypoda, and was formerly called Lamellibranchia. Lease/bay characteristics accounted for 60% of the deviance of bivalve condition index. The group includes clams, cockles, oysters, and mussels. Published by Houghton Mifflin Harcourt Publishing Company. Describe 2020 In Just One Word? Bivalve: (L bi = two; valva = door) any mollusc having two valves or shells that are hinged together, as in mussels and clams. Biology A covering or partition of thin membranous tissue, such as the veil of a mushroom, a rim of tissue around the margin of the bell of certain cnidarians, or a membrane of … Can you identify the antonym of “protagonist,” or the opposite of a hero or heroine? sponge's "skeleton" Term. Bivalves are aquatic animals, and different species of bivalve… accessed 26 February 2009. A siphon is an anatomical structure which is part of the body of aquatic molluscs in three classes: Gastropoda, Bivalvia and Cephalopoda (members of these classes include saltwater and freshwater snails, clams, octopus, squid and relatives). the fluid that circulates through the body of an animal that has an open circulatory system. See more. The People’s Choice 2020 Word Of The Year: 2020 Was A $#@#%%$@! “Affect” vs. “Effect”: Use The Correct Word Every Time. An internal organ called the mantle secretes calcium carbonate so that as the inner invertebrate grows, the outer shell provides a roomier home. The bivalve foot, unlike that of gastropods, does not have a flat creeping sole but is bladelike (laterally compressed) and pointed for digging. Birds and Nature Vol. Enrich your vocabulary with the English Definition dictionary This is my vocab (assignment due Mon) for Adv Biology--the Mollusks part. amoebocytes: Definition. Dictionary.com Unabridged Undergraduate 2. adj. Branchial: (GR branchia = gills) The ventral or inhalant aperture. Oceanography and Marine Biology CRC Press. bivalve (bī′vălv′) n. Any of numerous freshwater and marine mollusks of the class Bivalvia, having a shell consisting of two hinged valves connected by a ligament, and including the clams, mussels, oysters, and scallops. on the floor of the buccal cavity, the odontophore (connective tissue) Term. valve. Copyright © 2011. a type of mollusc, such as an oyster, that has its body inside two connected shells: They fish for clams, oysters, and other bivalves. bivalve n noun: Refers to person, place, thing, quality, etc. 2000. Examples of bivalves are clams, mussels, oysters, and scallops. It also forms a mantle Having a shell consisting of two hinged valves. Branchiae: (Gr Branchia = gills) gills; respiratory organs for breathing the oxygen dissolved in water. Palaeos Metazoa: Mollusca: Bivalvia: Bivalve Glossary Archived 6 November 2008 at the Wayback Machine. 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