The origin and early radiation of terrestrial vertebrates

Carroll, Robert L.

doi:10.1017/s0022336000017248

Cited by 23 publications

(14 citation statements)

References 39 publications

(43 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1), we may argue that polystomes evolved from fish parasites that colonized terrestrial hosts during the ecological transition of vertebrates close to lungfish (Brinkmann et al, 2004;George and Blieck, 2011), in the Late Devonian (Carroll, 2001), or even earlier in the early Middle Devonian (Niedź wiedzki et al, 2010). Although polystomes of amphibians do not constitute a monophyletic group, i.e.…”

Section: Host-parasite Coevolution At a Macroevolutionary Scalementioning

confidence: 99%

Evolutionary processes involved in the diversification of chelonian and mammal polystomatid parasites (Platyhelminthes, Monogenea, Polystomatidae) revealed by palaeoecology of their hosts

Héritier

Badets

Preez

et al. 2015

Molecular Phylogenetics and Evolution

View full text Add to dashboard Cite

Section: Host-parasite Coevolution At a Macroevolutionary Scalementioning

confidence: 99%

Evolutionary processes involved in the diversification of chelonian and mammal polystomatid parasites (Platyhelminthes, Monogenea, Polystomatidae) revealed by palaeoecology of their hosts

Héritier

Badets

Preez

et al. 2015

Molecular Phylogenetics and Evolution

View full text Add to dashboard Cite

“…3a); (2) lissamphibians are derived from the lepospondyl lysorophids (Laurin and Reisz, 1997) (Fig. 3b); (3) caecilians are most closely related to lepospondyl microsaurs, but salamanders and frogs are derived from different families of temnospondyl dissorophoids (Carroll, 2001) (Fig. 3c).…”

Section: Lissamphibian Origin: Monophyly Versus Polyphylymentioning

confidence: 99%

Mitogenomic Perspectives on the Origin and Phylogeny of Living Amphibians

Zhang¹,

Zhou²,

Chen³

et al. 2005

Systematic Biology

161

135

View full text Add to dashboard Cite

Establishing the relationships among modern amphibians (lissamphibians) and their ancient relatives is necessary for our understanding of early tetrapod evolution. However, the phylogeny is still intractable because of the highly specialized anatomy and poor fossil record of lissamphibians. Paleobiologists are still not sure whether lissamphibians are monophyletic or polyphyletic, and which ancient group (temnospondyls or lepospondyls) is most closely related to them. In an attempt to address these problems, eight mitochondrial genomes of living amphibians were determined and compared with previously published amphibian sequences. A comprehensive molecular phylogenetic analysis of nucleotide sequences yields a highly resolved tree congruent with the traditional hypotheses (Batrachia). By using a molecular clock-independent approach for inferring dating information from molecular phylogenies, we present here the first molecular timescale for lissamphibian evolution, which suggests that lissamphibians first emerged about 330 million years ago. By observing the fit between molecular and fossil times, we suggest that the temnospondyl-origin hypothesis for lissamphibians is more credible than other hypotheses. Moreover, under this timescale, the potential geographic origins of the main living amphibian groups are discussed: (i) advanced frogs (neobatrachians) may possess an Africa-India origin; (ii) salamanders may have originated in east Asia; (iii) the tropic forest of the Triassic Pangaea may be the place of origin for the ancient caecilians. An accurate phylogeny with divergence times can be also helpful to direct the search for "missing" fossils, and can benefit comparative studies of amphibian evolution.

show abstract

“…Available data on biodiversity in water and land reveal that only a restricted subset of the major clades of plants, animals, fungi and microbes have radiated on land [1] The emergence of Tetrapoda from their ancestral aquatic habitats during the Devonian was thus a key transitionary Period that ultimately led to the successful radiation of vertebrates in terrestrial environments [2]. To achieve this success, the ancient ancestors of modern Tetrapoda had to overcome major physiological challenges that included locomotion, breathing and dessication in an aerial environment.…”

Section: Introductionmentioning

confidence: 99%

The Lineage-Specific Evolution of Aquaporin Gene Clusters Facilitated Tetrapod Terrestrial Adaptation

Finn

Chauvigné

Hlidberg³

et al. 2014

PLoS ONE

143

183

View full text Add to dashboard Cite

A major physiological barrier for aquatic organisms adapting to terrestrial life is dessication in the aerial environment. This barrier was nevertheless overcome by the Devonian ancestors of extant Tetrapoda, but the origin of specific molecular mechanisms that solved this water problem remains largely unknown. Here we show that an ancient aquaporin gene cluster evolved specifically in the sarcopterygian lineage, and subsequently diverged into paralogous forms of AQP2, -5, or -6 to mediate water conservation in extant Tetrapoda. To determine the origin of these apomorphic genomic traits, we combined aquaporin sequencing from jawless and jawed vertebrates with broad taxon assembly of >2,000 transcripts amongst 131 deuterostome genomes and developed a model based upon Bayesian inference that traces their convergent roots to stem subfamilies in basal Metazoa and Prokaryota. This approach uncovered an unexpected diversity of aquaporins in every lineage investigated, and revealed that the vertebrate superfamily consists of 17 classes of aquaporins (Aqp0 - Aqp16). The oldest orthologs associated with water conservation in modern Tetrapoda are traced to a cluster of three aqp2-like genes in Actinistia that likely arose >500 Ma through duplication of an aqp0-like gene present in a jawless ancestor. In sea lamprey, we show that aqp0 first arose in a protocluster comprised of a novel aqp14 paralog and a fused aqp01 gene. To corroborate these findings, we conducted phylogenetic analyses of five syntenic nuclear receptor subfamilies, which, together with observations of extensive genome rearrangements, support the coincident loss of ancestral aqp2-like orthologs in Actinopterygii. We thus conclude that the divergence of sarcopterygian-specific aquaporin gene clusters was permissive for the evolution of water conservation mechanisms that facilitated tetrapod terrestrial adaptation.

show abstract

The origin and early radiation of terrestrial vertebrates

Cited by 23 publications

References 39 publications

Evolutionary processes involved in the diversification of chelonian and mammal polystomatid parasites (Platyhelminthes, Monogenea, Polystomatidae) revealed by palaeoecology of their hosts

Evolutionary processes involved in the diversification of chelonian and mammal polystomatid parasites (Platyhelminthes, Monogenea, Polystomatidae) revealed by palaeoecology of their hosts

Mitogenomic Perspectives on the Origin and Phylogeny of Living Amphibians

The Lineage-Specific Evolution of Aquaporin Gene Clusters Facilitated Tetrapod Terrestrial Adaptation

Contact Info

Product

Resources

About