Skip to main content

Free Content Morphology and Classification of Decapod Crustacean Larval Setae: A Scanning Electron Microscope Study of Dissodactylus Crinitichelis Moreira, 1901 (Brachyura: Pinnotheridae)

Download Article:
(PDF 2,581.1 kb)


Setae of the three zoeae, megalopa and first crab instar of Dissodactylus crinitichelis are described in detail from laboratory reared specimens. Scanning electron microscopy showed that setae are morphologically more complex and diverse than previously thought. More than thirty distinct setal types were observed. Of these, fifteen are plumodenticulate, equipped with distal denticules and proximal setules. An attempt has been made to accommodate this diversity within a unified system of classification by combining two previously existing schemes, which required some minor modifications. The proposed criteria for classification include such shaft characteristics as length/width ratio, location and conspicuousness of annulus, shape of tip, presence (or absence) and position of pore as well as the distribution and type of setules and denticules. On a basis of morphology some functions of setae can be inferred. It is suggested that complex setae, such as some plumodenticulate types, might perform multiple functions. Other cuticular structures are described and illustrated, including two cuticular organ complexes of unknown function, found in all examined stages.

Document Type: Research Article

Publication date: July 1, 1981

More about this publication?
  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more