Also found in: Medical.
Related to antennular: antennal


n. Zoology
A small antenna or similar organ, especially one of the first pair of small antennae on the head of a crustacean.

[French, diminutive of antenne, antenna, from Medieval Latin antenna, sail yard; see antenna.]

an·ten′nu·lar adj.


having antennules or similar appendages
References in periodicals archive ?
The antennular statocyst that appears during larval stage VII of the giant river prawn has an array of sensory structures that enable the perception of chemical and tactile stimuli beginning with its early life stages.
1993) reported that the aesthetascs (small hairlike end organs on the antennular flagella) in Macrobrachium spp.
The long antennular aesthetascs and the long plumose natatory setae of the first and second maxillipeds have been drawn truncated.
Antifouling adaptations of marine shrimp (Crustacea: Decapoda: Caridea): functional morphology and adaptive significance of antennular preening by the third maxillipeds.
Behavioral and electrophysiological experiments suggest that the antennular outer flagellum is the site of pheromone reception in the male helmet crab Telmessus cheiragonus.
Acumen terminating in upturned corneous spine and reaching just distal of midpoint of antennular peduncle.
2] concentrations could alter the behavior and activity of crustaceans, such as locomotion rates and antennular sniffing (de la Haye et al.
notialis: short rostrum, straight distally, and the proximodorsal margin convex, usually extending anteriorly to the end of distal antennular segment, sometimes reaching to proximal one-fourth of broadened portion of lateral antennular flagellum, with RL/CL <0.
Farfantepeaeus brasiliensis had a rostrum that was straight and slender, extending beyond the 3rd antennular segment, and generally reaching the broadened portion of lateral flagellum (Fig.
ABSTRACT In decapod crustaceans, chemical cues are usually detected by antennal and antennular setae.
Antennular peduncles stout, somewhat depressed dorsoventrally, contiguous, thus mesial faces flat; first segment unarmed on distolateral and distomesial margins; dorsal surface with low elevation proximolaterally, but without conspicuous proximolateral tubercle; stylocerite broad, closely appressed to peduncle, reaching distolateral angle of second segment, lateral margin notably convex; second segment nearly as long as broad to slightly longer than broad, with moderately large distomesial tooth.
Also, the interantennular septum is completely absent in the megalopa, and the septum is barely visible at the upper and lower edges between the two antennular fossae in the largest juveniles.