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Publication year - 2021
Publication title -
journal of morphology
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.21390
Subject(s) - biology , chromatophore , cover (algebra) , anatomy , cephalopod , octopus (software) , ultrastructure , physics , paleontology , mechanical engineering , quantum mechanics , fishery , engineering
The visibility of cephalopod chromatophore organs is regulated dynamically by rosettes of obliquely striated radial muscles that dilate or relax the diameter of a central pigmented sacculus. In this issue of the Journal of Morphology, Senft and coauthors (pp. 1245‐1258) present results of a study using 3D electron microscopy of Doryteuthis pealeii mantle skin, documenting tight putatively functional muscle‐to‐muscle contacts between radial muscles from different chromatophores, including elaborate sets of axonal processes located adjacent to those myo–myo junctions. These detailed ultrastructural findings demonstrate auxiliary anatomical routes for radial muscle activation. The cover image is a close up of the sking of Doryteuthis pealeii showing the general chromatophore organization.