Size Limitations in Semicircular Duct Systems

Müller, M.

doi:10.1006/jtbi.1999.0922

Cited by 59 publications

(122 citation statements)

References 0 publications

Supporting

Mentioning

115

Contrasting

Unclassified

Order By: Relevance

“…In order to explore the functional morphological link between the shape of the SCs and the locomotion mode, a multivariate morphospace of the bony labyrinth was created with the dataset of measurements per species with IBM SPSS STATISTICS v. 20.0. For clarifying the functional relevance of the SCs to different modes of locomotion, the sensitivity of the SCs was calculated [27]: ; R ¼ radii of curvature of SC; r ¼ diameter of SC.…”

Section: Methodsmentioning

confidence: 99%

“…Physical requirements, like a reasonable response speed, a high sensitivity and a low Reynolds number as a dimensionless proxy for laminar flow situations [25] in canal systems must guarantee an undisturbed laminar flow in the SCs. This is also influenced by the highly constrained shape of the inner ear with no significant intraspecific variation in the shape of the SCs [26,27], which stays in contrast to the vestibular system of extant sloths, where the highly variable bony labyrinth is correlated to their sluggish behaviour [8,28,29].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bony labyrinth morphometry indicates locomotor adaptations in the squirrel-related clade (Rodentia, Mammalia)

2015

View full text Add to dashboard Cite

The semicircular canals (SCs) of the inner ear detect angular acceleration and are located in the bony labyrinth of the petrosal bone. Based on highresolution computed tomography, we created a size-independent database of the bony labyrinth of 50 mammalian species especially rodents of the squirrel-related clade comprising taxa with fossorial, arboreal and gliding adaptations. Our sampling also includes gliding marsupials, actively flying bats, the arboreal tree shrew and subterranean species. The morphometric anatomy of the SCs was correlated to the locomotion mode. Even if the phylogenetic signal cannot entirely be excluded, the main significance for functional morphological studies has been found in the diameter of the SCs, whereas the radius of curvature is of minor interest. Additionally, we found clear differences in the bias angle of the canals between subterranean and gliding taxa, but also between sciurids and glirids. The sensitivity of the inner ear correlates with the locomotion mode, with a higher sensitivity of the SCs in fossorial species than in flying taxa. We conclude that the inner ear of flying and gliding mammals is less sensitive due to the large information flow into this sense organ during locomotion.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bony labyrinth morphometry indicates locomotor adaptations in the squirrel-related clade (Rodentia, Mammalia)

2015

View full text Add to dashboard Cite

show abstract

“…Head size is an obvious and unavoidable constraint for exceedingly small fish larvae, whose SCCs start small and grow with the fish [7]. As a group, sharks-even small ones-have abnormally large SCCs (R ∼ 40 mm) [7].…”

Section: /ĉmentioning

confidence: 99%

“…Here, we address a rather astonishing feature of the SCCs: the SCCs of every mammal, from mice to whales, are essentially the same size ( Fig. 1) [6,7]. Mammals span seven decades in mass and almost three in length, yet SCC dimensions are restricted to less than one.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Optimizing the Vertebrate Vestibular Semicircular Canal: Could We Balance Any Better?

Squires

2004

Phys. Rev. Lett.

View full text Add to dashboard Cite

The fluid-filled semicircular canals (SCCs) of the vestibular system are used by all vertebrates to sense angular rotation. Despite masses spanning seven decades, all mammalian SCCs are nearly the same size. We propose that the SCC represents a sensory organ that evolution has 'optimally designed'. Four geometric parameters are used to characterize the SCC, and 'building materials' of given physical properties are assumed. Identifying physical and physiological constraints on SCC operation, we find that the most sensitive SCC has dimensions consistent with available data.

show abstract

A new method for analysis of variance of the hydraulic and reactive attributes of aquifers as linked to hierarchical and multiscaled sedimentary architecture

Soltanian

Ritzi

2014

Water Resources Research

View full text Add to dashboard Cite

This technical note presents a useful methodology for studying how the variance of hydraulic and/or reactive attributes of an aquifer are linked to the multiscaled and hierarchical sedimentary architecture of the aquifer. A new recursive equation is derived which quantitatively describes how the variance is related to sedimentary facies defined at all scales across an entire stratal hierarchy. As compared to prior published equations that emphasize differences in means among facies populations within a hierarchical level, it emphasizes differences across levels. Because of the hierarchical relationships among the terms of the equation, we find it to be useful for conducting a holistic analysis of the relative contributions to the variance arising from all facies types defined across all scales. The methodology is demonstrated using appropriate field data, and is shown to be useful in defining parsimonious classification systems.

show abstract

Size Limitations in Semicircular Duct Systems

Cited by 59 publications

References 0 publications

Bony labyrinth morphometry indicates locomotor adaptations in the squirrel-related clade (Rodentia, Mammalia)

Bony labyrinth morphometry indicates locomotor adaptations in the squirrel-related clade (Rodentia, Mammalia)

Optimizing the Vertebrate Vestibular Semicircular Canal: Could We Balance Any Better?

A new method for analysis of variance of the hydraulic and reactive attributes of aquifers as linked to hierarchical and multiscaled sedimentary architecture

Contact Info

Product

Resources

About