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The ultrastructure of the "pigment knob" on Pleuromamma spp. (Copepoda: Calanoida)

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Date Issued:
1988
Title: The ultrastructure of the "pigment knob" on Pleuromamma spp. (Copepoda: Calanoida).
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Name(s): Blades-Eckelbarger, Pamela I., creator
Youngbluth, Marsh J., creator
Type of Resource: text
Genre: Article
Issuance: single unit
Date Issued: 1988
Publisher: John Wiley & Sons, Inc.
Extent: 13 p.
Physical Description: pdf
Language(s): English
Identifier: 3342281 (digitool), FADT3342281 (IID), fau:6403 (fedora), 10.1002/jmor.1051970306 (doi)
Note(s): The calanoid copepod genus Pleuromamma is easily distinguished from all other copepods by the presence of a rounded, dark-red cuticular structure ( = pigment knob) that protrudes from the left or right side of the second thoracic segment in both sexes. The present study of the pigment knob reveals a complex ultrastructure consisting of various cell types within three distinct areas that are bathed by hemolymph from the lateral sinus. The knob is covered by a greatly expanded cuticle through which a pore passes. The pore appears to connect with a centrally positioned pigment cell containing a large mass of darkly staining granules. This suggests that the knob may have a secretory function. Observations of live animals and dissected pigment knobs, however, indicates that the knob does not secrete a luminescent material nor does it luminesce internally.
This manuscript is an author version with the final publication available at http://www.wiley.com/WileyCDA/ and may be cited as: Blades-Eckelbarger, P. I., & Youngbluth, M. J. (1988). The ultrastructure of the
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution #628.
Subject(s): Pleuromamma
Ultrastructure (Biology)
Calanoida
Copepoda
Morphology
Persistent Link to This Record: http://purl.flvc.org/FCLA/DT/3342281
Links: http://dx.doi.org/10.1002/jmor.1051970306
Restrictions on Access: ©1988 John Wiley & Sons, Inc.
Host Institution: FAU