The myology of polyodon

Danforth, C. H.

doi:10.1002/jmor.1050240104

Cited by 38 publications

(36 citation statements)

References 7 publications

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“…The development and form of the m. adductor mandibulae in acipenseriforms has been variably described in past studies. For example, Carroll and Wainwright (), Edgeworth (), and Kurz () described the muscle as a single portion in sturgeons, while Danforth () and Adams () reported two portions in Polyodon spathula . Luther () in contrast, who studied A. gueldenstaedtii, A. ruthenus and Scaphirhynchus platorhynchus as well as Polyodon , discussed a “symphysial” and an “articular” portion present in all taxa, although less obvious in species of Acipenser .…”

Section: Discussionmentioning

confidence: 99%

“…The muscles of the hyoid arch comprise the dorsal hyoid constrictor muscles ( m. retractor hyomandibulae and m. opercularis ) and the ventral hyoid constrictor muscles ( m. interhyoideus and m. hyohyoideus ). The elements of the dorsal portion have been reported to either be joined (Adams, ; Luther, ) or separated (Kurz, ) in different species of acipenserids, whereas Polyodon appears to lack a m. opercularis (Danforth, ). Our ontogenetic series shows that the anlage of the dorsal hyoid constrictor muscle differentiates into the m. retractor hyomandibulae anteriorly and that the m. opercularis forms later in relation to the m. hyohyoideus .…”

Section: Discussionmentioning

confidence: 99%

“…The development and form of the m. adductor mandibulae in acipenseriforms has been variably described in past studies. For example, Carroll and Wainwright (2003), Edgeworth (1935), and Kurz (1924) described the muscle as a single portion in sturgeons, while Danforth (1913) and Adams (1918) reported two portions in Polyodon spathula. Luther (1913) in contrast, who studied A. gueldenstaedtii, A. ruthenus…”

Section: Mandibular Arch Musclesmentioning

confidence: 99%

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Development of the muscles associated with the mandibular and hyoid arches in the Siberian sturgeon, Acipenser baerii (Acipenseriformes: Acipenseridae)

Warth

Hilton

Naumann

et al. 2017

Journal of Morphology

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The skeleton of the jaws and neurocranium of sturgeons (Acipenseridae) are connected only through the hyoid arch. This arrangement allows considerable protrusion and retraction of the jaws and is highly specialized among ray-finned fishes (Actinopterygii). To better understand the unique morphology and the evolution of the jaw apparatus in Acipenseridae, we investigated the development of the muscles of the mandibular and hyoid arches of the Siberian sturgeon, Acipenser baerii. We used a combination of antibody staining and formalin-induced fluorescence of tissues imaged with confocal microscopy and subsequent three-dimensional reconstruction. These data were analyzed to address the identity of previously controversial and newly discovered muscle portions. Our results indicate that the anlagen of the muscles in A. baerii develop similarly to those of other actinopterygians, although they differ by not differentiating into distinct muscles. This is exemplified by the subpartitioning of the m. adductor mandibulae as well as the massive m. protractor hyomandibulae, for which we found a previously undescribed portion in each. The importance of paedomorphosis for the evolution of Acipenseriformes has been discussed before and our results indicate that the muscles of the mandibular and the hyoid may be another example for heterochronic evolution.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Mandibular Arch Musclesmentioning

confidence: 99%

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Development of the muscles associated with the mandibular and hyoid arches in the Siberian sturgeon, Acipenser baerii (Acipenseriformes: Acipenseridae)

Warth

Hilton

Naumann

et al. 2017

Journal of Morphology

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“…1A) have four interconnected series of paired hypobranchial muscles : the coracoarcuales, coracobranchiales, coracomandibulares, and sternohyoidei (termed coracohyoidei by some earlier workers, cf. Allis, 1917. The paired coracoarcuales originate on the coracoid bar and run anteriorly to an aponeurotic septum where they join the sternohyoidei.…”

Section: Hypobranchial Musclesmentioning

confidence: 99%

“…Much of the information presented below is gleaned from the works of earlier anatomists. The most important of these earlier works are those of Vetter (18781, Allis (1897Allis ( , 1917, Edgeworth (1911, b, 1928, 19351, Daniel (1922 and Sewertzoff (1928). In addition, the later works of Fox (19651, Nelson (1967) were invaluable.…”

Section: Introductionmentioning

confidence: 99%

Ventral gill arch muscles and the interrelationships of gnathostomes, with a new classification of the Vertebrata

Wiley

1979

Zoological Journal of the Linnean Society

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The ventral gill arch muscles of chondrichthyans, Latimeria, dipnoans, larval amphibians and actinopterygians are described and compared. Muscle patterns are characterized as primitive or derived and the derived patterns are used to test various hypotheses of the interrelationships of these griathostome groups. Gnathostomes differ from agnathans in having branchial muscles associated with the ventral gill arches. The monophyly of chondrichthyans is corroborated by the presence of coracobranchiales of hypobranchial origin. The monophyly of Recent teleostomes (Osteichthyes) is indicated by the presence of discrete transversi ventrales and interarcuales ventrales, and by the loss of the fifth superficial constrictor. A monophyletic Sarcopterygii which includes Latimeria is refuted by three paired branchial muscles found in dipnoans, Recent choanates and actinopterygians, but missing in Latimeria: pharyngoclaviculares, obliqui ventrales 1 and transversi ventrales 4. A new name, Euosteichthyes, is proposed for the group including dipnoans, choanates and actinopterygians. Sarcopterygii is restricted to include only dipnoans and choanates (among Recent organisms). Actinistia, including Latimeria, is proposed as the sister‐group of all other Recent osteictithyans. Brachiopterygians (polypterids) are placed within Actinopterygii. A phylogenetic hypothesis supporting this classification is presented.

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The motor nuclei of the cerebral nerves in phylogeny: A study of the phenomena of neurobiotaxis part I. Cyclostomi and pisces

Black

1917

J of Comparative Neurology

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The myology of polyodon

Cited by 38 publications

References 7 publications

Development of the muscles associated with the mandibular and hyoid arches in the Siberian sturgeon, Acipenser baerii (Acipenseriformes: Acipenseridae)

Development of the muscles associated with the mandibular and hyoid arches in the Siberian sturgeon, Acipenser baerii (Acipenseriformes: Acipenseridae)

Ventral gill arch muscles and the interrelationships of gnathostomes, with a new classification of the Vertebrata

The motor nuclei of the cerebral nerves in phylogeny: A study of the phenomena of neurobiotaxis part I. Cyclostomi and pisces

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