Amphipoda

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Amphipoda

[am′fip·ə·də]
(invertebrate zoology)
An order of crustaceans in the subclass Malacostraca; individuals lack a carapace, bear unstalked eyes, and respire through thoracic branchiae or gills.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Amphipoda

 

an order of saltwater and freshwater invertebrate animals of the subclass of higher crustaceans (Malacostraca).

The size of Amphipoda is from 0.5 to 25 cm. The body is usually laterally compressed, but sometimes it is flattened from back to front. Amphipoda swim on their sides—hence the Russian name bokoplavy (side-swimmers). Amphipoda are dioecious; the males are larger than the females. The females deposit eggs in a brood chamber. Young Amphipoda are not much different from the adults. Almost 7,000 species of Amphipoda are known. They are especially widely distributed in the oceans, but they are also found in fresh water (rivers, lakes, and subterranean and cave waters).

Amphipoda carry on various activities: they bury themselves in the ground, build small houses, and live among algae and hydroids. Some of them swim in the depth of the water or float on its surface. Amphipoda are food for many edible fish (cod, flounder, herring, carp, and trout), seals, whales, and birds. Amphipoda include the pests Chelura terebrans, which gnaw wooden structures (docks and piles), and several species of the genus Gammarus, which eat anchored fishnets.

A. I. BULYCHEVA

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
We observed no amphipods and very few other small aquatic organisms/larvae in samples collected from plankton tows at this site, and did not quantify the abundance of organisms during these plankton tows.
The study authors suspect the amphipods' large size and long life are likely the byproducts of their evolution to living in the environment of low temperatures, high pressure and a limited food supply.
I dislodged a large amphipod from the bivalve using a soft brush and placed it into a glass look box.
Adaptive Evolution of Deep-Sea Amphipods from the Superfamily Lysiassanoidea in the North Atlantic.
The amphipod Hyalella azteca can be used as an alternative freshwater organism to expand the number of species for ecotoxicological evaluation in estuarine environments and conditions of low salinity.
3A) and fed predominantly on copepods (%IRI=76.5%), polychaetes (%IRI=11.8%; unidentified and Fabricia sabella), and amphipods (%IRI= 11.4%) (Fig.
Parasite-induced suppression of aggregation under predation risk in a freshwater amphipod: sociality of infected amphipods.
The chemicals then enter the bodies of these amphipods and other smaller marine creatures, and disrupt their hormone balances.
The objectives of this study were to determine: (1) whether amphipods (G.
A partial explanation for this difference between the Virginia and New Jersey study sites may lay in the fact that macroalgae is more common in the harvested and uncultivated areas in New Jersey than in Virginia (see section on Macroalgal biomass below), and ampeliscid amphipods dominate abundance numbers by an order of magnitude in New Jersey relative to Virginia.
adspersus, mixed, none), Palaemon density (1 or 2 individuals per aquarium, which corresponded to 14 and 28 ind [m.sup.-2] or 1.49 [+ or -] 0.92 and 2.57 [+ or -] 1.06 g [m.sup.-2] of dry biomass (mean+standard deviation), respectively), presence of macroalgae (vegetated boulders, unvegetated boulders), presence of gammarid amphipods (present, absent).
They never caught a fish, but they did nab some of the amphipods. Still, Scherer, who loves seafood, wasn't tempted to nibble.