A review of the pharyngeal apophysis and its significance in the classification of African cichlid fishes

Greenwood, Humphry

doi:10.5962/p.314130

Cited by 22 publications

(9 citation statements)

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“…Whole-mount antibody staining against different muscle proteins has proven detecting also very thin filigreed muscles (Naumann & Olsson, 2018). This technique has been used to clearly identify a cucullaris in some early-branching actinopterygian taxa where an absence of this muscle was reported previously ( Lepisosteus osseus : Naumann et al, 2017 vs. Edgeworth 1935; Polypterus senegalus : Noda et al, 2017 vs. Greenwood and Lauder, 1981).…”

Section: Discussionmentioning

confidence: 93%

“…One such example is the enigmatic cucullaris muscle, which is a complicated case due to the filigree nature of this muscle in many early-branching ray-finned fishes. Polypterus bichir , in which a cucullaris is reported as absent (Greenwood & Lauder, 1981), would not be an appropriate model to represent the Polypteriformes in questions regarding the reconstruction of the evolution of the vertebrate cucullaris , as in P. ornatipinnes and P. senegalus a cucullaris is present (Greenwood & Lauder, 1981; Noda et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…This technique has been used to clearly identify a cucullaris in some early-branching actinopterygian taxa where an absence of this muscle was reported previously (Lepisosteus osseus : Naumann et al, 2017vs. Edgeworth 1935 Polypterus senegalus: Noda et al, 2017 vs. Greenwood andLauder, 1981).…”

Section: Interspecific Variation and The Use Of Model Species In Evol...mentioning

confidence: 99%

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Development of the branchial musculature of the Siberian sturgeon (Acipenser baerii) reveals a heterochronic shift during the evolution of acipenseriform cranial muscles

Naumann¹,

Warth

Hammel

et al. 2023

Preprint

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Heterochronic shifts are regarded one of the major evolutionary changes acting on developmental modules and underlying the origin of morphological disparity. Conserved characters, rarely subject to heterochronic shifts during the curse of evolution, in contrast could indicate underlying developmental or functional constraints. Here we use the development of the cranial musculature Siberian sturgeon (Acipenser baerii) as a model to investigate the role of heterochrony during the evolution of the craniofacial system of Actinopterygii. Using histology, fluorescent antibody staining and fast propagation-based phase contrast imaging in combination with 3D-reconstruction we describe the development of the branchial and hypobranchial musculature. We show that the development of the first branchial arch is accelerated compared to other basal-branching actinopterygians leading to a more synchronous development with the hyoid arch. A pattern that could relate to the derived migratory behaviour of the neural crest cells in sturgeons. In contrast, the developmental timing of the more posterior branchial musculature, including the cucullaris muscle in the Siberian sturgeon, appears to be highly conserved compared to other Actinopterygii and even Osteognathostomata. This could indicate the presence of functional or developmental constraints underlying the evolution of the muscles at the head/trunk interface.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Interspecific Variation and The Use Of Model Species In Evol...mentioning

confidence: 99%

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Development of the branchial musculature of the Siberian sturgeon (Acipenser baerii) reveals a heterochronic shift during the evolution of acipenseriform cranial muscles

Naumann¹,

Warth

Hammel

et al. 2023

Preprint

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“…Previous studies have relied on a relatively limited comparative framework of three to eight families (Eagderi, 2010; G. J. Nelson, 1967; Springer & Johnson, 2004, 2015). Facial and opercular muscles have proved highly informative in anatomical descriptions of several subgroups of bony fish, such as Notacanthiformes (Greenwood, 1977), Teleostei (Datovo & Vari, 2014; Winterbottom, 1974a), Tetraodontiformes (Winterbottom, 1974b), Stromateiformes (Pastana et al, 2021), Gymnotiformes (Peixoto & de Pinna, 2022), and Actinopterygii (Datovo and Rizzato, 2018). There is every reason to believe that similarly, valuable information awaits discovery in these myological complexes of anguilliforms.…”

Section: Introductionmentioning

confidence: 99%

Facial and opercular muscles in the Anguilliformes (Elopomorpha: Teleostei): Comparative anatomy and phylogenetic implications for the basal position of Protanguilla

Espíndola

Johnson

Pinna

2023

Journal of Morphology

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The teleost order Anguilliformes, true eels, comprises more than 1000 described species in 20 families, commonly known as eels, congers, morays, and gulper eels.Comprehensive studies of Anguilliformes are limited, resulting in a lack of consensus for morphology-based phylogenetic hypotheses. A detailed morphological analysis of the cephalic and opercular myology offers a promising new source of characters to help elucidate the intrarelationships of Anguilliformes. Our study is the most extensive myological analysis for the group and includes 97 terminal taxa, with representatives from each of the 20 families of Anguilliformes plus outgroup clades. Results demonstrate that muscle characters inform phylogenetic relationships withinAnguilliformes, and we propose two new synapomorphies for all extant members, including Protanguilla palau, the "living fossil"-adductor mandibulae originating on the parietal (vs. restricted to suspensorium) and segmentum mandibularis absent (vs. present). Exceptions for the first condition characterize highly modified saccopharyngoids, and for the second one, Notacanthidae. More importantly, we suggest three new synapomorphies for the remaining extant anguilliforms (except in highly modified saccopharyngoids)-adductor mandibulae originates on the frontals (vs. frontals naked), adductor mandibulae stegalis is separated from the rictalis (vs. rictostegalis fused into a single piece), and the levator operculi inserts on the lateral surface of the opercle (vs. medial surface of the opercle). Our phylogenetic optimization strongly corroborates the hypothesis that Protanguilla is the sister group of all other extant eels. A further goal of this paper is to clearly document the substantive conflicts between the available molecular data and the extensive and diverse morphological evidence.

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“…This osteological disorder has already been referred as a response to adverse environmental factors (Chang et al, 2008;Greenwood, 1992;Schlüter & Kohring, 2002), hydrostatic maintenance, floating aid (Paig-tran et al, 2016), fungal infestation (Grabda, 1982), a natural consequence of age (Aguilera et al, 2017;Gauldie & Czochanska, 1990;Smith-Vaniz & Carpenter, 2007). Although consensus has not been reached on the causes and possible consequences of hyperostosis, several studies reported the occurrence of the condition in fossil records (Béarez, 1997;Chang et al, 2008;Gaudant & Meunier, 1996;Guzmán & Polaco, 2002;Lidour et al, 2020;Schlüter & Kohring, 2002;Schlüter et al, 1992;Tyler et al, 1992;van Mesdag et al, 2020).…”

mentioning

confidence: 99%

Patterns description of hyperostosis observed in Atlantic moonfish Selene setapinnis and lookdown Selene vomer

Tuna,

Calixto,

Luz

et al. 2023

Journal of Morphology

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Hyperostosis manifests itself and develops differently in taxonomically related species. Radiographic images of individuals belonging to different size classes of Atlantic Moonfish Selene setapinnis and Lookdown Selene vomer were obtained from two different estuarine areas of Rio de Janeiro/Brazil. In S. setapinnis, hyperostosis occurred in 65.22% of the specimens analyzed in three different skeletal regions. All specimens of S. vomer had hyperostosis in four regions. Patterns of occurrence were detected in both species, and the affected regions did not coincide in the same bone region, except for the cleithrum. Hyperostosis in S. setapinnis were observed in high frequencies of seventh dorsal pterygiophore, whereas in specimens of S. vomer this condition was detected to a greater extent in the neural spines of the second abdominal vertebra and first to third caudal vertebrae. The data demonstrated a relationship between the sexual maturity and the occurrence and development of hyperostotic bones in ageing process of individuals. It is the first description of S. vomer with a hyperostosis phenomenon for the species on the Brazilian coast.

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A review of the pharyngeal apophysis and its significance in the classification of African cichlid fishes

Cited by 22 publications

References 0 publications

Development of the branchial musculature of the Siberian sturgeon (Acipenser baerii) reveals a heterochronic shift during the evolution of acipenseriform cranial muscles

Development of the branchial musculature of the Siberian sturgeon (Acipenser baerii) reveals a heterochronic shift during the evolution of acipenseriform cranial muscles

Facial and opercular muscles in the Anguilliformes (Elopomorpha: Teleostei): Comparative anatomy and phylogenetic implications for the basal position of Protanguilla

Patterns description of hyperostosis observed in Atlantic moonfish Selene setapinnis and lookdown Selene vomer

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