Visualizing allometry: Geometric morphometrics in the study of shape changes in the early stages of the two-banded sea bream, Diplodus vulgaris (Perciformes, Sparidae)

Journal of Morphology
Angelo LoyLeonardo Tunesi

Abstract

The sea bream, Diplodus vulgaris, is a marine teleost widely distributed in the Mediterranean and eastern Atlantic coastal waters. The larvae colonize shallow waters along rocky shores where, after a short period spent in the water column, they settle. Such habitat transition is characterized by important shape changes, mostly related to their swimming capacity and feeding behavior. In this study, geometric morphometrics has been used to characterize shape changes during early juvenile life. All specimens were collected in a single locality in the Gulf of Tigullio (Ligurian Sea), and data relative to their position in the water column and to the habitat selected were recorded. A total of 14 landmarks were collected on 82 specimens (range of standard length 11.2-82.8 mm). Landmark configurations were superimposed, and residuals were modeled with the thin-plate spline interpolating function: shape changes were visualized as splines. Growth trajectories were computed using relative warp analysis. Shape changes in the observed size range concern an overall broadening along the dorsoventral axis, a displacement of the mouth position, and a negative allometry of the head region. The growth trajectory resembles a theoretical saturatin...Continue Reading

References

Mar 1, 1987·Evolution; International Journal of Organic Evolution·William R Atchley

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Citations

Feb 1, 2007·Evolution; International Journal of Organic Evolution·Johan HollanderKerstin Johannesson
Dec 22, 2006·PloS One·Casper J BreukerChristian Peter Klingenberg
Feb 13, 2018·Journal of Fish Biology·N Jahnsen-GuzmánM F Landaeta
Apr 3, 2016·Development Genes and Evolution·Christian Peter Klingenberg
Oct 25, 2007·Proceedings. Biological Sciences·Abby Grace Drake, Christian Peter Klingenberg
Apr 21, 2020·Journal of Fish Biology·Faviel A López-RomeroJürgen Kriwet
Aug 18, 2010·Journal of Morphology·Ioanna Georga, George Koumoundouros
May 2, 2021·Proceedings of the National Academy of Sciences of the United States of America·Kory M EvansMatt Friedman

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