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Related to Amphipods: order Amphipoda


(invertebrate zoology)
An order of crustaceans in the subclass Malacostraca; individuals lack a carapace, bear unstalked eyes, and respire through thoracic branchiae or gills.



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.


References in periodicals archive ?
Boulders with filamentous algae in the experiment served as an object of grazing for the palaemonid prawns and gammarid amphipods and as a refuge for gammarids.
The data points in the center of this graph indicate those prey that were more frequently found in the stomachs of Atlantic croaker than in the stomachs of the other 2 species: mysid shrimp, various unidentified crustacean parts, and gammaridean amphipods.
It's not just the amphipods that are potentially at risk, but also animals that have yet to be discovered.
At least 22 species of invertebrates were represented, of which shrimp was predominant at 86% FO followed by polychaetes and isopods at 38% FO each, then bivalves at 33% FO, echiurids and amphipods at 29% FO each, mysids at 24% FO, crab and tunicates at 14% FO; gastropods, cephalopods, and bryozoans were each represented at 10% FO (Tabic 3).
granifera invasion Lake Nhlange 189 Brachidontes 316 polychaetes virgiliae Lake Sibaya 864 oligochaetes 164 chironomid larvae 749 oligochaetes 1388 amphipods Lake Bhangazi 132 Melcmoides 166 oligochaetes tuberculata South 154 oligochaetes 425 chironomid larvae St Lucia 26132 Assiminea sp.
The endangered Kauai cave wolf spider (Adelocosa anops) feeds on the equally endangered Kauai cave amphipod (Spelaeorchestia koloana).
Similar acanthocephalans and trematodes have been found in Mallards, which can be exposed while feeding on amphipods.
Thomas and his team discovered new species of sea slugs (nudibranchs), feather stars (crinoids) and amphipods (genus Leucothoe).
Indeed, biologists have observed a rich variety of crustaceans hanging around vents, including amphipods resembling sand fleas, and tiny lobsters called galatheids.
These examples comprise studies in water-living insects, such as amphipods and water striders, and also in land insects, as investigated in a recent study in Australian plague locusts that are at a higher risk of being eaten as mating pairs compared to single animals.