Looking Inside Marine Organisms with Magnetic Resonance and X‐ray Imaging

Zanette, Irène; Daghfous, Gheylen; Weitkamp, Timm; Gillet, Brigitte; Adriaens, Dominique; Langer, Max; Cloetens, Peter; Helfen, Lukas; Bravin, A.; Peyrin, Françoise; Baumbach, Tilo; Dischler, Jean‐Michel; Loo, Denis Van; Praet, Tomas; Poirier‐Quinot, Marie; Boistel, Renaud

doi:10.1002/9783527675418.ch7

Cited by 20 publications

(19 citation statements)

References 164 publications

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“…All CT data were reconstructed using Feldkamp's filtered back-projection algorithm with a cut-off at the Nyquist frequency and an isotropic voxel size of 100 lm. Three-dimensional processing and rendering followed the protocols of Boistel et al (Boistel et al, 2011) and Zanette et al (Zanette et al, 2013) after semiautomatic segmentation of different skeletal units (cranial, 12 first vertebrae and otolith) using 'Convert Image Type', converted into 8-bit voxels to obtain a mask and subsequently having used ImageJ (Abramoff, Magalhaes & Ram, 2014) for masking the anatomical structures we were not interested in, for each skeletal unit. Direct volume rendering was used for visualizing the subset of selected voxels of cranial, otolith and post cranial elements as well as gut content, in 8.0.1 (FEI, VSG, SAS, Merignac, France).…”

Section: Methodsmentioning

confidence: 99%

Sexual dimorphism in the sonic system and otolith morphology of Neobythites gilli (Ophidiiformes)

et al. 2018

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Although males and females of many sound‐producing fish species may show differences at the level of the sonic apparatus, otoliths are usually species specific having intraspecific variation only if exposed to different environmental condition or in relation with the fish size. This study reports sexual dimorphism at the level of both otolith shape and sonic apparatus in the ophidiid Neobythites gilli. As it is the case in other Neobythites species, sound‐producing apparatus is better developed in males. Due to their way of life in darker or deep waters, differences at the level of the sound‐producing apparatus support more constraints related to acoustic communication for sex recognition or mate localization. Otolith modifications concern only Neobythites male specimens, whereas otolith of females are virtually unchanged when compared to sister species without sexual dimorphism, meaning this feature would not be related to sexually induced differences in calling. Differences between the otoliths of males and females could therefore be related to their way of life.

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Section: Methodsmentioning

confidence: 99%

Sexual dimorphism in the sonic system and otolith morphology of Neobythites gilli (Ophidiiformes)

et al. 2018

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“…Three‐dimensional processing and rendering followed the protocols of Zanette et al () after semiautomatic segmentation of each skeletal unit using “generate surface,” and having used ImageJ (Rasband, −2005) for masking body wall of each skeletal unit. Direct volume rendering were used for visualizing the subset of selected voxels of cranial and post cranial elements as well as gut content, in AVIZO 7.1 and 8.0.1 (FEI, VSG, SAS, Merignac, France).…”

Section: Methodsmentioning

confidence: 99%

Osteological Observations on the Alytid Anura Latonia nigriventer with Comments on Functional Morphology, Biogeography, and Evolutionary History

Biton

Boistel

Rabinovich

et al. 2016

Journal of Morphology

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The Hula Painted Frog (Latonia nigriventer) is a rare frog species endemic to the Hula Valley, Israel. The species is the sole relict of a clade that was widespread mainly in Europe from the Oligocene until the beginning of the Pleistocene. The osteological characteristics of L. nigriventer are described based on X-ray microtomography scans of extant specimens and Pleistocene bones from the Hula Valley, to elucidate the evolutionary history of Alytidae and more specifically of Latonia. Based on the osteological description of L. nigriventer, we now better understand the differences, between Latonia and its sister taxon Discoglossus. They differ mainly in their cranial structure with the reinforced skull of Latonia having powerful jaws. Latonia nigriventer can achieve great force while closing its jaws, due to increased adductor muscle insertion surfaces as expressed by the presence of an additional paracoronoid process and an enlarged upper margin of the postero-lateral wall of the lower jaw. In addition, a wider pterygoid fossa and higher canthus postero-lateralis of the frontoparietal, compared to that of Discoglossus, also suggest the presence of well-developed adductor muscles. Furthermore, L. nigriventer have particularly strong skulls as expressed by: long articulations between different skull elements, interdigitation in the contact area between the nasals and between nasals and the frontoparietals, and fused frontoparietals. Both males and females L. nigriventer have very robust forelimbs, as indicated by well-developed medial crests of the humerus. Based on limited eastern Mediterranean paleontological data, we can only suspect that the dispersal of Latonia into the Levant from Asia Minor occurred at some point during the Miocene or later. The first appearance of L. nigriventer in the Hula Valley, its current habitat, dates to approximately 780 thousand years ago at the archaeological site of Gesher Benot Ya'aqov. J. Morphol. 277:1131-1145, 2016. © 2016 Wiley Periodicals, Inc.

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“…A number of 3D imaging techniques can be employed to study animal morphology and anatomy non-destructively or even entirely non-invasively (Ziegler et al 2008, Boistel et al 2011, Ziegler 2012, Zanette et al 2014, Gutiérrez et al 2018. These technologies include magnetic resonance imaging (MRI), a technique based on the principle of nuclear magnetic resonance (NMR) as well as computed tomography (CT), which relies on differences in X-ray attenuation of biological tissues (Table 1).…”

Section: Digital Three-dimensional Imaging Techniques Provide New Anamentioning

confidence: 99%

“…Signifi cantly less damage to DNA can be observed when conventional μCT or CT systems are used (Paredes et al 2012, Hall et al 2015, Immel et al 2016, Wanek and Rühli 2016. In addition, due to technical limitations SRμCT is commonly performed using a FOV of only a few millimeters width and height (Zanette et al 2014), which obviously complicates the analysis of larger specimens. One example for SRμCT-based research on molluscs is provided by a study focusing on embryonic shell formation in a gastropod (Marxen et al 2008).…”

Section: Computed Tomography Techniques In Malacological Research μCtmentioning

confidence: 99%

Digital Three-Dimensional Imaging Techniques Provide New Analytical Pathways for Malacological Research

Ziegler¹,

Bock

Ketten

et al. 2018

American Malacological Bulletin

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Looking Inside Marine Organisms with Magnetic Resonance and X‐ray Imaging

Cited by 20 publications

References 164 publications

Sexual dimorphism in the sonic system and otolith morphology of Neobythites gilli (Ophidiiformes)

Sexual dimorphism in the sonic system and otolith morphology of Neobythites gilli (Ophidiiformes)

Osteological Observations on the Alytid Anura Latonia nigriventer with Comments on Functional Morphology, Biogeography, and Evolutionary History

Digital Three-Dimensional Imaging Techniques Provide New Analytical Pathways for Malacological Research

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