Morphology frequently varies with phylogeny, body size, sex, and phenotypic plasticity. However, the relative influence of these variables is unknown for most taxa. Morphological variation of Freshwater Drum Aplodinotus grunniens in the Wabash River, USA was described using geometric morphometrics. A MANCOVA model of shape indicated that morphological variation was primarily influenced by allometry (body size), sex, and river location. Among all individuals, at least 50% of the variability in morphology was a product of body size while sex and river km (collection locale) accounted for 10% and 5% of the overall variability in shape, respectively. However, when mature and immature individuals were analyzed separately, mature individuals demonstrated no morphological signal concurrent with river km, while at least 45% of the variability in immature shape was attributed to river locale. The contributions of allometry, sex, and river gradient on Freshwater Drum morphology suggest that morphological variation is largely a result of a combination of developmental, sexual, and environmental influences.
Skip Nav Destination
Article navigation
Morphology and Development|
December 30 2013
Effects of Allometry, Sex, and River Location on Morphological Variation of Freshwater Drum Aplodinotus grunniens in the Wabash River, USA
Stephen J. Jacquemin;
Stephen J. Jacquemin
1 Ball State University, Department of Biology, Aquatic Biology and Fisheries Center, 2000 West University Avenue, Muncie, Indiana 47306.
2 Wright State University—Lake Campus, Department of Biological Sciences, 7600 Lake Campus Drive, Celina, Ohio 45822; E-mail: stephen.jacquemin@wright.edu. Send reprint requests to this address.
Search for other works by this author on:
Mark Pyron
Mark Pyron
1 Ball State University, Department of Biology, Aquatic Biology and Fisheries Center, 2000 West University Avenue, Muncie, Indiana 47306.
Search for other works by this author on:
Copeia (2013) 2013 (4): 740–749.
Citation
Stephen J. Jacquemin, Mark Pyron; Effects of Allometry, Sex, and River Location on Morphological Variation of Freshwater Drum Aplodinotus grunniens in the Wabash River, USA. Copeia 1 December 2013; 2013 (4): 740–749. doi: https://doi.org/10.1643/CI-13-022
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
Sign in via your Institution
Sign in via your InstitutionCiting articles via
Investigating Ex Situ Competitive Interactions in a Novel Fish Community with Implications for the Introduction of Sunfish (Lepomis spp.) in Headwater Streams
Elizabeth Culp, Shawna Fix, Joshua Ennen, Jon Davenport, Kristen Cecala
Rapid Ossification Helps Explain Small Body Size in Urspelerpes brucei (Caudata: Plethodontidae)
Tyler L. Brock, Claire M. Crookston, Christopher K. Beachy, Carlos D. Camp
Image Processing of Thigh Color Pattern Is an Effective Method for Identifying Individual Cope’s Gray Treefrogs, Hyla chrysoscelis
Jacinda Berokoff, Iván de la Hera, Michael S. Reichert
Sexual Dimorphism in the Electric Knifefish Sternarchogiton labiatus (Gymnotiformes: Apteronotidae) with a Hypermorphic Snout and Oral Jaws
Maxwell J. Bernt, Aaron H. Fronk, Kory M. Evans, James S. Albert
Phylogenomics and Morphology of the African Fish Genus Brycinus with Revalidation of Brachyalestes and Description of a New Species from the Congo Basin (Teleostei: Alestidae)
Melanie L. J. Stiassny, Cooper Keane, José J. M. M. Mbimbi, Bruno F. Melo