Allometric growth in the extant coelacanth lung during ontogenetic development

Cupello, Camila; Brito, Paulo M.; Herbin, Marc; Meunier, François; Janvier, Philippe; Dutel, Hugo; Clément, Gérard

doi:10.1038/ncomms9222

Cited by 35 publications

(63 citation statements)

References 28 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These small plates could be homologous to the calcified plates of Palaeozoic and Mesozoic coelacanth lungs [18]. During the development of this work, we have not identified the presence of true pulmonary arteries in L. chalumnae , probably due to the poor conservation of the pre-dissected material.…”

Section: Resultsmentioning

confidence: 91%

“…Virtual sections of high-quality tomography facilities of the earlier known embryo of L. chalumnae CCC 202.1 (4 cm TL), in which the lung exhibits some features still compatible with a potentially functional lung [18], and of the late embryo without yolk sac CCC 162.21 (35.6 cm TL) have evidenced the presence of compartmentalized structures throughout the length of the lung (figure 4 a−d ), suggesting the presence of alveolation in these first ontogenetic stages.…”

Section: Resultsmentioning

confidence: 99%

“…The extant coelacanth lung is unpaired, well vascularized and originated from the ventral portion of the oesophagus by the presence of a non-obliterated opening [18]. Although this lung exhibits some respiratory features by the presence of ciliated cells intercalated by goblet cells in the adult specimens here analysed, it lacks compartmentalization and pneumocytes.…”

Section: Discussionmentioning

confidence: 99%

“…Lungs, as a ventral derivate, are considered as plesiomorphic for osteichthyans [11,13], as they are found in the extant basal actinopterygian polypterids [14–16], and in all major groups of extant sarcopterygians: coelacanths [17,18], lungfishes [1,19–21] and tetrapods.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Lung anatomy and histology of the extant coelacanth shed light on the loss of air-breathing during deep-water adaptation in actinistians

et al. 2017

Self Cite

View full text Add to dashboard Cite

Lungs are specialized organs originated from the posterior pharyngeal cavity and considered as plesiomorphic for osteichthyans, as they are found in extant basal actinopterygians (i.e. Polypterus) and in all major groups of extant sarcopterygians. The presence of a vestigial lung in adult stages of the extant coelacanth Latimeria chalumnae is the result of allometric growth during ontogeny, in relation with long-time adaptation to deep water. Here, we present the first detailed histological and anatomical description of the lung of Latimeria chalumnae, providing new insights into its arrested differentiation in an air-breathing complex, mainly represented by the absence of pneumocytes and of compartmentalization in the latest ontogenetic stages.

show abstract

Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Lung anatomy and histology of the extant coelacanth shed light on the loss of air-breathing during deep-water adaptation in actinistians

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, it appears that the intermediate form facilitates ingestion of body uids, and the proboscis structure in the juvenile stages of Alboglossiphonia sp. persists as a vestige in the common glossiphoniid leeches [40,41] (Fig. 4C).…”

Section: Resultsmentioning

confidence: 97%

Diversification of Leech Proboscis Structure According to Prey Ingestion Behavior

Kwak

Kim

et al. 2020

Preprint

View full text Add to dashboard Cite

Background Adaptive radiation is a phenomenon in which various organs, depending on their diet and circumstance, are diversified morphologically or functionally as animals adapt to the environment. Although previous studies on changes caused by various external pressures have been well studied, the evidence for variation in invertebrates is not well known. We used freshwater leeches as an invertebrate model to observe their specific trophic niche and diversity of ingestion organ. Our results show convergent evolution according to structural changes through a representative species Alboglossiphonia sp., and the origin from common ancestor due to the remaining fluid ingestion behavior of the larval stages as a vestige.Results We identified the feeding behavior of rhynchobdellid leeches, which have the proboscis. Alboglossiphonia sp. swallows the entire prey using its proboscis, whereas proboscis leeches exhibit typical fluid-sucking behavior. We observed that proboscis of fluid-sucking leeches encompasses compartmentalized and dense muscle layers. In contrast, macrophagous leeches have relatively simple esophagus structures. To address whether the different feeding behaviors were intrinsic, we investigated the behavioral pattern and muscle arrangement in the earlier developmental stage of rhynchobdellid leeches. Interestingly, juveniles of the macrophagous leech as well as fluid-sucking leeches have the proboscis with the compartmentalized muscle layers and exhibit fluid-sucking behaviorsConclusions Animals have adapted various ways to obtain the energy needed for their survival. Diversification and evolution of ingestion methods across species further exhibit the functional morphology of the ingestion organ. However, information on ingestion behavior and internal structure is still lack and unclear, especially in invertebrate models. Our results suggest that the proboscis leeches have originated from the common fluid-sucking glossiphoniid ancestor and species diversification has led to modifications in the structure of the feeding tube. Together, leeches represent a comparative model for esophagus development according to the ingestion pattern based on diverse muscular arrangement in proboscis.

show abstract

Development and growth of the pelvic fin in the extant coelacanthLatimeria chalumnae

Mansuit

Clément²,

Herrel

et al. 2020

The Anatomical Record

Self Cite

View full text Add to dashboard Cite

The ontogeny of the paired appendages has been extensively studied in lungfishes and tetrapods, but remains poorly known in coelacanths. Recent work has shed light on the anatomy and development of the pectoral fin in Latimeria chalumnae. Yet, information on the development of the pelvic fin and girdle is still lacking. Here, we described the development of the pelvic fin and girdle in Latimeria chalumnae based on 3D reconstructions generated from conventional and X‐ray synchrotron microtomography, as well as MRI acquisitions. As in other jawed vertebrates, the development of the pelvic fin occurs later than that of the pectoral fin in Latimeria. Many elements of the endoskeleton are not yet formed at the earliest stage sampled. The four mesomeres are already formed in the fetus, but only the most proximal radial elements (preaxial radial 0–1) are formed and individualized at this stage. We suggest that all the preaxial radial elements in the pelvic and pectoral fin of Latimeria are formed through the fragmentation of the mesomeres. We document the progressive ossification of the pelvic girdle, and the presence of a trabecular system in the adult. This trabecular system likely reinforces the cartilaginous girdle to resist the muscle forces exerted during locomotion. Finally, the presence of a preaxial element in contact with the pelvic girdle from the earliest stage of development onward questions the mono‐basal condition of the pelvic fin in Latimeria. However, the particular shape of the mesomeres may explain the presence of this element in contact with the girdle.

show abstract

Allometric growth in the extant coelacanth lung during ontogenetic development

Cited by 35 publications

References 28 publications

Lung anatomy and histology of the extant coelacanth shed light on the loss of air-breathing during deep-water adaptation in actinistians

Lung anatomy and histology of the extant coelacanth shed light on the loss of air-breathing during deep-water adaptation in actinistians

Diversification of Leech Proboscis Structure According to Prey Ingestion Behavior

Development and growth of the pelvic fin in the extant coelacanthLatimeria chalumnae

Contact Info

Product

Resources

About