Search results
Results from the WOW.Com Content Network
The mandible (from Latin: mandibula or mandĭbŭ-lum, a jaw) [1] of an arthropod is a pair of mouthparts used either for biting or cutting and holding food. Mandibles are often simply called jaws. Mandibles are often simply called jaws.
In general, arthropods have mouthparts for cutting, chewing, piercing, sucking, shredding, siphoning, and filtering. This article outlines the basic elements of four arthropod groups: insects, myriapods, crustaceans and chelicerates. Insects are used as the model, with the novel mouthparts of the other groups introduced in turn.
The antennae and mandibles are the largest limb pairs, with the antennae having a masticatory endite on the coxa while the mandible has a cluster of setae on the protopod. Both antennae and mandibles bear three-segmented endopods , with the exopods of the mandibles having 14 segments and those of the antennae having 12.
Mandibulates include the crustaceans, myriapods (centipedes and millipedes), and all true insects. The name "Mandibulata" refers to the mandibles , a modified pair of limbs used in food processing, the presence of which are characteristic of most members of the group.
The 67,000 described species range in size from Stygotantulus stocki at 0.1 mm (0.004 in), to the Japanese spider crab with a leg span of up to 3.8 m (12.5 ft) and a mass of 20 kg (44 lb). Like other arthropods, crustaceans have an exoskeleton, which they moult to grow.
Because its jaw can unhinge, the viperfish can eat large prey for its size. Pacific Viperfish Use Bioluminescence. ... The viperfish is a mid-level predator, eating small fish and crustaceans. It ...
In this malacostracan crustacean diagram, the maxillae are labelled maxilla and maxillula.. In arthropods, the maxillae (singular maxilla) are paired structures present on the head as mouthparts in members of the clade Mandibulata, used for tasting and manipulating food.
The mandible and its palpilform branch are well developed, and, as well as the three pairs of foot-jaws, exactly resemble those of Diaptomus. The four anterior pairs of feet are all alike, and consist of a basal stalk of two articulations, and two branches of unequal size. The inner branch is much the smaller, but both are divided into two joints.