Sponsor
Portland State University. Department of Biology
First Advisor
Randy Zelick
Date of Publication
Fall 1-17-2018
Document Type
Thesis
Degree Name
Master of Science (M.S.) in Biology
Department
Biology
Language
English
Subjects
Catfishes, Sound production by animals, Loricariidae -- Behavior, Loricariidae -- Morphology
DOI
10.15760/etd.6043
Physical Description
1 online resource (v, 56 pages)
Abstract
The Neotropical catfish Pterygoplichthys pardalis produces a harsh stridulation sound upon manual capture. This stridulation sound is made on the abduction of the pectoral fin spine, and is accomplished by friction of a ridged dorsal condyle against a rough spinal fossa of the cleithrum in the pectoral girdle. The sound produced has an average frequency of 121 Hz, and is used with other anti-predator adaptations such as bony subdermal armor and defensive fin-spreading. Pterygoplichthys pardalis does not display behavioral modification in response to conspecific stridulation sound, and therefore it is likely that stridulation sound in P. pardalis is being used as a predator deterrent.
Rights
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
Persistent Identifier
http://archives.pdx.edu/ds/psu/23894
Recommended Citation
Slusher, Monique Renee, "Morphological Correlates and Behavioral Functions of Sound Production in Loricariid Catfish, with a Focus on Pterygoplichthys pardalis (Castelnau, 1855)" (2018). Dissertations and Theses. Paper 4155.
https://doi.org/10.15760/etd.6043