Christopher W. Ashelby
Preliminary observations on the mandibles of palaemonoid shrimp (Crustacea: Decapoda: Caridea: Palaemonoidea)
Ashelby, Christopher W.; De Grave, Sammy; Johnson, Magnus L.
Sammy De Grave
Dr Magnus Johnson M.Johnson@hull.ac.uk
Senior Lecturer in Environmental Marine Science
The mandibles of caridean shrimps have been widely studied in the taxonomy and functional biology of the group. Within the Palaemonoidea the mandibles reach a high level of structural diversity reflecting the diverse lifestyles within the superfamily. However, the majority of studies have been restricted to light microscopy, with the ultrastructure at finer levels poorly known. This study investigates the mandible of nine species belonging to six of the recognised families of the Palaemonoidea using SEM and analyses the results in a phylogenetic and dietary framework. The results of the study indicate that little phylogenetic information is conveyed by the structure of the mandible, but that its form is influenced by primary food sources of each species. With the exception of Anchistioides antiguensis, all species examined possessed cuticular structures at the distal end of the pars molaris (molar process). Five types of cuticular structures are recognised herein, each with a unique form, but variable in number, placement and arrangement. Each type is presumed to have a different function which is likewise related to diet.
Ashelby, C. W., De Grave, S., & Johnson, M. L. (2015). Preliminary observations on the mandibles of palaemonoid shrimp (Crustacea: Decapoda: Caridea: Palaemonoidea). PeerJ, 2015(3), e846. https://doi.org/10.7717/peerj.846
|Journal Article Type||Article|
|Acceptance Date||Mar 2, 2015|
|Online Publication Date||Mar 24, 2015|
|Publication Date||Mar 24, 2015|
|Deposit Date||Aug 9, 2018|
|Publicly Available Date||Oct 27, 2022|
|Peer Reviewed||Peer Reviewed|
|Keywords||SEM; Functional biology; Diet; Caridean shrimps; Palaemonidae; Hymenoceridae; Gnathophyllidae; Desmocarididae; Anchistioididae; Euryrhynchidae|
© 2015 Ashelby et al.<br /> <br /> Licence<br /> This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
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