exopodite


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exopodite

[ek′säp·ə‚dīt]
(invertebrate zoology)
The outer branch of a biramous crustacean appendage.
References in periodicals archive ?
These setae are organized in groups of 3, with an apical orifice, and are set between each plumose seta of the exopodite (Fig.
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.
carpathicus Exopodite A2 2-Segmented 1-Segmented 1-Segmented with with 4 setae with 4 setae 4 setae Mandibular 1-Segmented 1-Segmented 1-Segmented with palp with 4 setae with 5 setae 3 setae The fast With seta With seta Without seta segment P2 Spines on Rows of spines Rows of spines -- abdominal discontinuous discontinuous somites in the middle in the middle on ventral on dorsal side side Presence of No No No additional differential features Distribution Estonia Arctics and South Subarctics Carpathians Features M.
Standardized metric It follows from the above that the best measure available for use was the length (in ventral aspect) of the left first exopodite.
squammosus exhibit a disproportionately long first left exopodite was 47.
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.
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.
Five pairs of biramous pleopods nearly symmetrical on opposite sides of body, endopodites of first three pairs greatly expanded into large subrectangular fleshy lobes extending far to sides, other exopodites and all endopodites much reduced and mostly extending posteriorly somewhat beyond margins of lateral plates; pleopods covering all but small medioanterior region of pleon ventrally.