protopodite

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Related to protopod: protopod larva

protopodite

[prə′täp·ə‚dīt]
(invertebrate zoology)
The basal segment of a crustacean limb bearing an endopodite or exopodite, or both, at its distal extremity.
References in periodicals archive ?
lividus References Cuesta & Shubart (1999) Carapace RDL (mm) 0.75 [+ or -] 0.03 CW (mm) 0.32 [+ or -] 0.01 CL (mm) 0.42 [+ or -] 0.02 Antennule 2A, 1S Antenna Small spines in protopod 6-7 Maxilliped 1 Coxa (S) nd Telson Outer spines 3 Pleon Dorsolateral processes (P) 2-4 G.
Protopod of first and second thoracopods large, carrying biramous rami, with each ramus transformed into movable chela.
Uropod with broad rami; exopod with two small spines at posterolateral angle and with distinct transverse suture; posterolateral projection of protopod terminally blunt.
Presumable synapomorphies among species of Chorocaris and Rimicaris are the following: the tendency of a rostral reduction, nonacuminate antennal tooth of the carapace, nonmarginally dentate posterolateral margin of pleura of fourth and fifth pleonal somites, the presence of a distolateral transverse suture on the antennal scale, and the nonacuminate uropodal protopod. Shank et al.
Nevertheless, Opaepele can be distinguished from Chorocaris by the acuminate antennal and pterygostomial teeth of the carapace, the denticulate posterolateral margin of the fifth pleonal pleuron, the well differentiated, sharp distolateral tooth of the antennal scale and the sharply pointed posterolateral projection of the uropodal protopod. Mirocaris superficially resembles Chorocaris, but the presence of strap-like epipods immediately distinguishes Mirocaris from Chorocaris.
3C): Biramous; protopod two-segmented; endopod two-segmented with 5, 5 setae; exopod 10-segmented with 0, 0, 1, 2, 1, 2, 1, 1, 1, 3 setae.
3E): Biramous; protopod two-lobed, coxal endite with eight setae, basal endite with two stout setae and two setae; endopod three-segmented with 3, 2, 5 setae; small exopod with four plumose setae.
3F): Biramous; protopod five-lobed, endites with 8, 3, 3, 3, 3 setae; endopod four-segmented with 2, 2, 2, 3 setae; exopod with five plumose setae.
Protopod with 1 outer and 1 inner plumose setae, 1 proximolateral setulose papilla, and 1 mid-lateral pore.
4A) protopod large, modified to form apron, with 1 outer plumose seta situated near base of exopod, 1 inner plumose seta near large intercoxal sclerite, 1 proximolateral corrugated pad on dorsal surface, 3 marginal membranes, minute pores scattered on ventral surface, and 2 unequal sensilla along posterior margin.
Larval cells became squamous general epidermal cells (GECs) in the protopod in instar V as their height decreased from 10 [micro]m to 3-5 [micro]m (Fig.
Setal cells developed in distal regions associated with high cell density, whereas GECs formed in more proximal regions adjacent to the protopod (Fig.