Developmental Finite Element Analysis of Cichlid Pharyngeal Jaws: Quantifying the Generation of a Key Innovation

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2018 Jan 11

PMID 29320528

Citations 2

Authors

Tim Peterson

Gerd B Muller

Affiliations

Soon will be listed here.

Abstract

Advances in imaging and modeling facilitate the calculation of biomechanical forces in biological specimens. These factors play a significant role during ontogenetic development of cichlid pharyngeal jaws, a key innovation responsible for one of the most prolific species diversifications in recent times. MicroCT imaging of radiopaque-stained vertebrate embryos were used to accurately capture the spatial relationships of the pharyngeal jaw apparatus in two cichlid species (Haplochromis elegans and Amatitlania nigrofasciata) for the purpose of creating a time series of developmental stages using finite element models, which can be used to assess the effects of biomechanical forces present in a system at multiple points of its ontogeny. Changes in muscle vector orientations, bite forces, force on the neurocranium where cartilage originates, and stress on upper pharyngeal jaws are analyzed in a comparative context. In addition, microCT scanning revealed the presence of previously unreported cement glands in A. nigrofasciata. The data obtained provide an underrepresented dimension of information on physical forces present in developmental processes and assist in interpreting the role of developmental dynamics in evolution.

Citing Articles

The legacy and evolvability of Pere Alberch's ideas.

Nuno de la Rosa L, Muller G Interface Focus. 2024; 14(5):20240011.

PMID: 39464645 PMC: 11503022. DOI: 10.1098/rsfs.2024.0011.

Correction: Developmental finite element analysis of cichlid pharyngeal jaws: Quantifying the generation of a key innovation.

PLoS One. 2018; 13(3):e0195393.

PMID: 29596502 PMC: 5875892. DOI: 10.1371/journal.pone.0195393.

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