Fine morphology of frontal filaments in nauplii of cirriped crustaceans
Related Experiment Video
Updated: Mar 17, 2026

Historical View and Physiology Demonstration at the NMJ of the Crayfish Opener Muscle
Published on: November 9, 2009
A L Obukhova1, E E Voronezhskaya2, V V Malakhov3,4
1Koltsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119334, Russia. allobukhova@gmail.com.
Abstract:
Fine morphology of the frontal filaments (FFs) at all nauplius stages of two barnacle species (Verruca stroemia and Hesperibalanus hesperius) has been investigated by scanning electron microscopy. FFs have been detected at the second nauplius stage and persist during all stages. FFs contain a wide proximal and a fine distal parts, but they are not actually separated as segments of the limbs, and the area between them looks like a single cuticular crease. Apical and subapical pores have been found at the top of each FF in the larvae of both species, which may indicate the chemoreceptor function of these organs.
More Related Videos
11:45The Swimmeret System of Crayfish: A Practical Guide for the Dissection of the Nerve Cord and Extracellular Recordings of the Motor Pattern
Published on: November 25, 2014
16:16Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises
Published on: January 18, 2011
Related Concept Videos
Mechanism of Filopodia Formation
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Generation of Straight or Branched Actin Filaments
Arp2/3 Complex
Arp2/3 complex is a seven-subunit complex consisting of two proteins similar to actin- Arp2 and Arp3, and five other subunits that help keep Arp2 and Arp3 inactive. When required, the complex is...
The Structure of Intermediate Filaments
Intermediate...
Fimbriae, Pili, and Axial Filaments
Surface Appendages of Archaea
Studying the Cytoskeleton