exopodite

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exopodite

the outer branch of the crustacean limb.
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During zoea I, the antennal exopodite is long, with a small spine in the distal region.
These setae are organized in groups of 3, with an apical orifice, and are set between each plumose seta of the exopodite (Fig.
brucei: exopodite of A2 2-segmented with 4 setae, mandibular palp 1-segmented with 4 setae, the first segment of endopodite P2 with setae on inner side, abdominal somites with continuous row of spines edged on dorsal and discontinuous (of female) in the medial row of some longer spines on ventral side.
It differs from the known six, conspecific subspecies in the combination of the following characters: structure of exopodite of antennae and mandibular palp, presence of inner seta on the first segment of legs 2, and equipment of abdominal somites.
The pleopods are similar to those of the type, their exopodites extending considerably beyond the margins of the pleomeres, the subcircular endopodites not covering the central region of the dorsal surface of the pleon.
Pleon nearly straight across posterior margin, of six pleomeres, first five produced into extended lateral plates, sixth as small embedded pleotelson; five pairs of biramous pleopods, exopodites of first three greatly expanded; no uropods.
Exopodites of left-side pleopods averaged 3% and 2% shorter than exopodites of rightside pleopods for the two respective species (paired t-test; both P<0.
Table 1 Results of tests of potential effects of various criterion variables on the accuracy (bias of delta-bars) and precision (CVs of deltas) for measured lengths of first pleopod exopodites for slipper lobster (Scyllarides squammosus) and Hawaiian spiny lobster (Panulirus marginatus) caught from Necker Bank, Hawaii.
It was shown that both lobsters and crayfish produce a great variety of flow fields by using the exopodites of the maxillipeds and by fanning the pleopods.
4); the paddle-like exopodites that are used by the larval stages to remain in the water column presumably increase drag during tailflicking.
The crabs used their chelae to scrape the third maxillipeds and exopodites of the mouthparts; this behavior was only observed during the first hour of low-salinity exposure.
Simultaneous recordings were made from the basal muscles producing the rhythmic beating of the exopodites and the muscle bundles developing in the merus of the endopodite of the first walking leg.