uropod

(redirected from Uropodal)
Also found in: Dictionary.

uropod

[′yu̇r·ə‚päd]
(invertebrate zoology)
One of the flattened abdominal appendages of various crustaceans that with the telson forms the tail fan.
References in periodicals archive ?
caldera Bamber & Costa, 2009, by having only three maxilliped basis setae and a biarticulated uropodal exopod that is longer than the first endopod article.
Leptochelia africana (females) can be separated from all of these species by the presence of a biarticulated uropodal exopod.
Variation within a specimen in the uropodal endopod article number (Fig.
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.
Uropodal protopod with posterolateral projection suboval (Fig.
For example, although the uropodal exopodite is jointed in the postlarva, it was never jointed in animals classified as stage IVC; however, the typical postlarval spine located on the outer margin was always acquired.
The ability to differentiate at the next molt is attained in the tail region first, with uropodal endopods and pleopods gaining the ability to differentiate to postlarval form (and size) as early as 2 and 20 h posthatching, respectively.
The uropodal claws are long, proximally straight and distally curved.