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Isopoda is an order of crustaceans.Members of this group are called isopods and include both aquatic species and terrestrial species such as woodlice.All have rigid, segmented exoskeletons, two pairs of antennae, seven pairs of jointed limbs on the thorax, and five pairs of branching appendages on the abdomen that are used in respiration.
The IUCN Red List lists the Socorro isopod as extinct in the wild (EW). [13] This listing is likely out of date since the isopod was last assessed on August 1, 1996. Based on the five-year review from the USFWS the isopod is likely Vulnerable (VU). [3] It was the first crustacean ever listed on the endangered species list. [14]
The second antennae in the burrowing Hippoidea and Corystidae have setae that interlock to form a tube or "snorkel" which funnels filtered water over the gills. [ 6 ] A spiny lobster , showing the enlarged second antennae
The Cymothoidae are a family of isopods in the suborder Cymothoida found in both marine and freshwater environments. Cymoithoids are ectoparasites, usually of fish, and they include the bizarre "tongue-biter" (Cymothoa exigua), which attaches to a fish's tongue, causing it to atrophy, and replaces the tongue with its own body. [2]
Sphaeromatidae is a family of isopods, often encountered on rocky shores and in shelf waters in temperate zones. [1] The family includes almost 100 genera and 619 known marine species (and about 65 in fresh water).
Sphaeroma terebrans is a mangrove-boring isopod, first described by Spence Bate in 1866. [2] It is 8–10 millimetres (0.31–0.39 in) long, [2] and is thought to have been introduced to North America by wooden-hulled ships. [2] The isopod is found throughout the Gulf of Mexico mainly in mangrove swamps of Louisiana and Florida.
Euidotea durvillei, known commonly as the red seaweed isopod, ... The red seaweed isopod is a nocturnal grazer feeder, feeding on red seaweed. [3]
Giant isopods are a good example of deep-sea gigantism (cf. giant squid), as they are far larger than the "typical" isopods that are up to 5 cm (2.0 in). Bathynomus can be divided into "giant" species where the adults generally are between 8 and 15 cm (3.1 and 5.9 in) long and "supergiant" species where the adults are typically between 17 and ...