Ontogeny of the Vertebral Column of <i>Eleutherodactylus johnstonei</i> (Anura: Eleutherodactylidae) Reveals Heterochronies Relative to Metamorphic Frogs

Meza‐Joya, Fabio Leonardo; Ramos-Pallares, Eliana; Ramírez‐Pinilla, Martha Patricia

doi:10.1002/ar.22705

Cited by 10 publications

(12 citation statements)

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“…; Barrionuevo ; Meza‐joya et al . ; Vera and Ponssa ), comprehensive information on the structure and development of the skeleton of frogs remains rare. Detailed skeletal developmental information is known for only about 50 (Havens ; Hoyos et al .…”

Section: Discussionmentioning

confidence: 99%

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Osteological development of Cope's Gray Treefrog, Hyla chrysoscelis

Shearman

Maglia

2014

Acta Zoologica

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Shearman, R.M. and Maglia, A.M. 2014. Osteological development of Cope's Gray Treefrog, Hyla chrysoscelis. -Acta Zoologica (Stockholm) 00: 000-000.Hyla chrysoscelis, Cope's Gray Treefrog, is a generalized treefrog found throughout much of east-central North America. Although it is a model for many behavioural and ecological studies, little is known of its skeletal morphology or development. Herein, we describe the postembryonic skeletal development and adult osteology of H. chrysoscelis. The adult skull is well ossified with slight dermal ornamentation, the postcranial and tadpole skeletons are fairly non-distinct with no obvious novel morphologies, and the Gosner stage by which bony elements first appear varies. We compare the rank order sequence of ossification to that of its sibling species Hyla versicolor and use examples from this study to demonstrate current complications with conducting ossification sequence meta-analyses.

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Section: Discussionmentioning

confidence: 99%

“…; Fabrezi and Goldberg ; Meza‐joya et al . ) target frogs that are specialized or unique (including hyperossified, autapomorphic, and miniaturized species). Frequently, these species are the only representatives of a single large clade for which skeletal developmental data are known.…”

Section: Discussionmentioning

confidence: 99%

Osteological development of Cope's Gray Treefrog, Hyla chrysoscelis

Shearman

Maglia

2014

Acta Zoologica

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“…However, this topic is still controversially discussed. Besides the decreased requirement for aquatic breeding sites, direct development also tends to negate larval constraints on adult morphology (Schlosser and Roth, ; Meza‐Joya et al, ). However, it was also argued that tadpoles and adults are tightly connected via a variable ontogeny and that without the process of metamorphosis the outcome in adult morphology is constrained (Altig, ).…”

Section: Introductionmentioning

confidence: 99%

Cranial muscle development in frogs with different developmental modes: Direct development versus biphasic development

Ziermann

Diogo

2013

Journal of Morphology

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Normal development in anurans includes a free swimming larva that goes through metamorphosis to develop into the adult frog. We have investigated cranial muscle development and adult cranial muscle morphology in three different anuran species. Xenopus laevis is obligate aquatic throughout lifetime, Rana(Lithobates) pipiens has an aquatic larvae and a terrestrial adult form, and Eleutherodactylus coqui has direct developing juveniles that hatch from eggs deposited on leaves (terrestrial). The adult morphology shows hardly any differences between the investigated species. Cranial muscle development of E. coqui shows many similarities and only few differences to the development of Rana (Lithobates) and Xenopus. The differences are missing muscles of the branchial arches (which disappear during metamorphosis of biphasic anurans) and a few heterochronic changes. The development of the mandibular arch (adductor mandibulae) and hyoid arch (depressor mandibulae) muscles is similar to that observed in Xenopus and Rana (Lithobates), although the first appearance of these muscles displays a midmetamorphic pattern in E. coqui. We show that the mix of characters observed in E. coqui indicates that the larval stage is not completely lost even without a free swimming larval stage. Cryptic metamorphosis is the process in which morphological changes in the larva/embryo take place that are not as obvious as in normal metamorphosing anurans with a clear biphasic lifestyle. During cryptic metamorphosis, a normal adult frog develops, indicating that the majority of developmental mechanisms towards the functional adult cranial muscles are preserved.

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“…This lack of vertebral elements in the tail was thus achieved by the ‘slower’ and more elaborate mode of vertebral development via cartilaginous vertebral centra which ossify subsequently. Thereby, both direct‐developing as well as metamorphic frogs display the ancestral chondrification and ossification sequence (neural arches chondrify and ossify prior to the vertebral centra) although heterochonic effects (delay and acceleration of chondrification processes) are observed (Meza‐Joya, Ramos‐Pallares & Ramírez‐Pinilla, ).…”

Section: Discussionmentioning

confidence: 99%

How informative is vertebral development for the origin of lissamphibians?

et al. 2019

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The origin of lissamphibians remains unresolved and different origins within Paleozoic early tetrapods have been proposed. Both the vertebral morphology as well as the ossification sequence of the vertebrae are potentially important character traits to test these different hypotheses. Here, we aim to determine if vertebral formation and ossification sequence in lissamphibians and early tetrapods are valuable indicatives of phylogenetic relationships. To answer this question, we examined the vertebral development in growth series of different salamander taxa and compared the results with literature data on vertebral development in frogs, caecilians and early tetrapods. In salamanders, caecilians and early tetrapods, the vertebral centrum develops by chordacentral and perichordal centrum formation, whereas in frogs, no chordacentral centrum formation has been observed so far. In the salamander taxa studied here, the following chondrification and ossification sequences are observed: chondrification first of the neural arches and then of the centra followed by ossification first of the centra and then of the neural arches. In frogs, in contrast, the neural arches ossify prior to the centra and it can be assumed that this developmental sequence represents the ancestral condition for tetrapods, as it characterizes some stem‐tetrapods and all temnospondyls from which growth series are known. However, the ossification sequence of the vertebral column is only incompletely known in stem‐amniotes which makes a comparison with extant lissamphibians difficult. This indicates that the mode of centrum formation and the ossification sequence are highly variable and cannot be used to determine the origin of lissamphibians within early tetrapods.

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Ontogeny of the Vertebral Column of Eleutherodactylus johnstonei (Anura: Eleutherodactylidae) Reveals Heterochronies Relative to Metamorphic Frogs

Cited by 10 publications

References 44 publications

Osteological development of Cope's Gray Treefrog, Hyla chrysoscelis

Osteological development of Cope's Gray Treefrog, Hyla chrysoscelis

Cranial muscle development in frogs with different developmental modes: Direct development versus biphasic development

How informative is vertebral development for the origin of lissamphibians?

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