Suction feeding of West African lungfish (<i>Protopterus annectens</i>): An XROMM analysis of jaw mechanics, cranial kinesis, and hyoid mobility

Gartner, Samantha M; Whitlow, Katrina R.; Laurence-Chasen, J. D.; Kaczmarek, Elska B; Granatosky, Michael C.; Ross, Callum F.; Westneat, Mark W.

doi:10.1242/bio.059447

Cited by 2 publications

(2 citation statements)

References 50 publications

(108 reference statements)

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“…A more 3D linkage system would allow greater lateral and ventral expansion of the skull ( Olsen et al. 2017 ; Gartner et al. 2022 ; Whitlow et al.…”

Section: Discussionmentioning

confidence: 99%

Evolutionary Patterns of Modularity in the Linkage Systems of the Skull in Wrasses and Parrotfishes

Gartner,

Larouche,

Evans

et al. 2023

Integrative Organismal Biology

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The concept of modularity is fundamental for understanding the evolvability of morphological structures and is considered a central framework for the exploration of functionally and developmentally related subsets of anatomical traits. In this study, we explored evolutionary patterns of modularity and integration in the four-bar linkage biomechanical system of the skull in the fish family Labridae (wrasses and parrotfishes). We measured evolutionary modularity and rates of shape diversification of the skull partitions of three biomechanical four-bar linkage systems using 205 species of wrasses (Family: Labridae) and a three-dimensional geometric morphometrics data set of 200 coordinates. We found support for a two-module hypothesis on the family level that identifies the bones associated with the three linkages as being a module independent from a module formed by the remainder of the skull (neurocranium, nasals, premaxilla, pharyngeal jaws). We tested the patterns of skull modularity for four tribes in wrasses: hypsigenyines, julidines, cheilines and scarines. The hypsigenyine and julidine groups showed the same two-module hypothesis for Labridae, whereas cheilines supported a four-module hypothesis with the three linkages as independent modules relative to the remainder of the skull. Scarines showed increased modularization of skull elements where each bone is its own module. Diversification rates of modules show that linkage modules have evolved at a faster net rate of shape change than the remainder of the skull, with cheilines and scarines exhibiting the highest rate of evolutionary shape change. We developed a metric of linkage planarity and found the oral jaw linkage system to exhibit high planarity while the rest position of the hyoid linkage system exhibited increased three-dimensionality. This study shows a strong link between phenotypic evolution and biomechanical systems, with modularity influencing rates of shape change in the evolution of the wrasse skull.

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“…A more 3D linkage system would allow greater lateral and ventral expansion of the skull ( Olsen et al. 2017 ; Gartner et al. 2022 ; Whitlow et al.…”

Section: Discussionmentioning

confidence: 99%

Evolutionary Patterns of Modularity in the Linkage Systems of the Skull in Wrasses and Parrotfishes

Gartner,

Larouche,

Evans

et al. 2023

Integrative Organismal Biology

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“…A similar role of cranial elevation has been reconstructed for paleoniscoid fishes (Lauder, 1980; Schaeffer & Rosen, 1961). Retraction of the pectoral girdle (Bishop & Foxon, 1968) and neurocranial elevation (Bemis, 1986; Bemis & Lauder, 1986; Gartner et al, 2022) have also been described in lungfishes.…”

Section: Introductionmentioning

confidence: 99%

Occipital‐synarcual joint mobility in ratfishes (Chimaeridae) and its possible adaptive role

Romanov,

Shakhparonov,

Gerasimov

et al. 2024

Journal of Morphology

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The neurocranial elevation generated by axial muscles is widespread among aquatic gnathostomes. The mechanism has two functions: first, it contributes to the orientation of the mouth gape, and second, it is involved in suction feeding. To provide such mobility, anatomical specialization of the anterior part of the vertebral column has evolved in many fish species. In modern chimaeras, the anterior part of the vertebral column develops into the synarcual. Possible biological roles of the occipital‐synarcual joint have not been discussed before. Dissections of the head of two species of ratfishes (Chimaera monstrosa and Chimaera phantasma) confirmed the heterocoely of the articulation surface between the synarcual and the neurocranium, indicating the possibility of movements in the sagittal and frontal planes. Muscles capable of controlling the movements of the neurocranium were described. The m. epaxialis is capable of elevating the head, the m. coracomandibularis is capable of lowering it if the mandible is anchored by the adductor. Lateral flexion is performed by the m. lateroventralis, for which this function was proposed for the first time. The first description of the m. epaxialis profundus is given, its function is to be elucidated in the future. Manipulations with joint preparations revealed a pronounced amplitude of movement in the sagittal and frontal planes. Since chimaeras generate weak decrease in pressure in the oropharyngeal cavity when sucking in prey, we hypothesised the primary effect of neurocranial elevation, in addition to the evident lateral head mobility, is accurate prey targeting.

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Suction feeding of West African lungfish (Protopterus annectens): An XROMM analysis of jaw mechanics, cranial kinesis, and hyoid mobility

Cited by 2 publications

References 50 publications

Evolutionary Patterns of Modularity in the Linkage Systems of the Skull in Wrasses and Parrotfishes

Evolutionary Patterns of Modularity in the Linkage Systems of the Skull in Wrasses and Parrotfishes

Occipital‐synarcual joint mobility in ratfishes (Chimaeridae) and its possible adaptive role

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