uropod


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Related to uropod: Swimmerets

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 ?
Larvae searched for prey by sweeping an arc-shaped area around them and moved from point to point by securing themselves with their uropod. The 1st instars ate the fewest eggs and were unable to extract all the fluid contents of the eggs especially within 24 h after emergence.
WAS[p.sup.-/-] neutrophils exhibit multiple F-actin fronts and fail to redistribute CD11b into clusters at the uropod [14, 16].
Uropod exopod biarticulated, longer than proximal endopod article; endopod terminal article longer than other articles.
Into each trap was placed a sample of approximately 40 male rock lobsters, each of which had been measured (CL) and marked by cutting a notch in its uropod. In this way, it was possible to distinguish between lobsters that had been placed in the trap and those that had entered the trap of their own accord.
These areas included the tips of each claw (n = 2); the inside of each claw (n = 2); claws (n = 2); claw "shoulders" (n = 2); rostrum (n = 1); around each eye (n = 2); left, center, and right carapace (n = 3); each abdominal segment (n = 6); and each tail uropod (n = 5).
Exopod of uropod as long as telson, with two spines on posterior half of outer margin; telson with 45 pairs of dorsolateral spines and one pair of distal spines (Fig.
One week before the start of the experiment, a standard v-notch tool (used by North Cape v-notchers in the field) was used to mark each lobster in the experimental group with a v-notch in the right uropod next to the telson.
The molt stage was determined by examining the uropod in which partial retraction of the epidermis could be observed (Peebles 1977).
Uropod with broad mmi; exopod with two small spines at posterolateral angle and with distinct transverse suture; posterolateral projection of protopod terminally blunt.
1), four measurements were taken with a pair of dividers and a ruler calibrated to 1 mm: antennal length, uropod length, body length (excluding antennae and uropods), and total specimen length (including antennae and uropods).
Molt stage was determined by examination of setogenesis via changes in the seta on the margin of the inner uropod, in accordance with Smith and Dall (1985).