Post-Cretaceous bursts of evolution along the benthic-pelagic axis in marine fishes

Ribeiro, Emanuell Duarte; Davis, Aaron M.; Rivero-Vega, Rafael A.; Ortı́, Guillermo; Betancur‐R, Ricardo

doi:10.1098/rspb.2018.2010

Cited by 33 publications

(44 citation statements)

References 47 publications

(73 reference statements)

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“…This time-calibrated phylogeny consists of 508 tips and comprises a phylogenetic backbone of Rabosky et al ( 73 ), with additional carangarian taxa grafted onto it. We pruned the Ribeiro et al ( 52 ) phylogeny in ape ( 74 ) to only include the taxa present in our study. The resulting pruned tree consisted of 102 carangarian species.…”

Section: Methodsmentioning

confidence: 99%

“…Phylogenetic Reconstruction. To study the evolution of shape change across Carangaria, we used the phylogeny of Ribeiro et al (52). This time-calibrated phylogeny consists of 508 tips and comprises a phylogenetic backbone of Rabosky et al (73), with additional carangarian taxa grafted onto it.…”

Section: Methodsmentioning

confidence: 99%

“…Phylogenetic Visualization. To visualize major axes of shape variation and evolution, we utilized a phylomorphospace approach using our first two PCs of shape variation (accounting for 56% of total shape variance) and projected the Ribeiro et al (52) phylogeny onto them (75). In order to compare phylogenetic trends in our data, we coupled our PC analysis with a phylogenetically aligned components analysis (76), which uses an ordinary leastsquares approach to align the trait data to the axis of greatest phylogenetic signal and projected the first two components onto the aforementioned phylogeny.…”

Section: Methodsmentioning

confidence: 99%

“…The flatfish body plan is thought to have rapidly arisen shortly after the Cretaceous–Paleogene boundary (66 Mya) ( 49 ). Comparative analyses show rapid bursts of body-shape diversification in flatfishes and their close relatives within the broader clade Carangaria, a diverse radiation including disparate lineages like billfishes and remoras in addition to flatfishes ( 49 , 51 , 52 ) ( Fig. 1 ).…”

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confidence: 99%

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Integration drives rapid phenotypic evolution in flatfishes

Evans

Larouche

Watson

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

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Evolutionary innovations are scattered throughout the tree of life, and have allowed the organisms that possess them to occupy novel adaptive zones. While the impacts of these innovations are well documented, much less is known about how these innovations arise in the first place. Patterns of covariation among traits across macroevolutionary time can offer insights into the generation of innovation. However, to date, there is no consensus on the role that trait covariation plays in this process. The evolution of cranial asymmetry in flatfishes (Pleuronectiformes) from within Carangaria was a rapid evolutionary innovation that preceded the colonization of benthic aquatic habitats by this clade, and resulted in one of the most bizarre body plans observed among extant vertebrates. Here, we use three-dimensional geometric morphometrics and a phylogenetic comparative toolkit to reconstruct the evolution of skull shape in carangarians, and quantify patterns of integration and modularity across the skull. We find that the evolution of asymmetry in flatfishes was a rapid process, resulting in the colonization of novel trait space, that was aided by strong integration that coordinated shape changes across the skull. Our findings suggest that integration plays a major role in the evolution of innovation by synchronizing responses to selective pressures across the organism.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Integration drives rapid phenotypic evolution in flatfishes

Evans

Larouche

Watson

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

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“…2018; Ribeiro et al . 2018). This has been interpreted through the lens of an ecological release model, with extant groups filling ecological roles vacated by the extinction of the dominant clades of large‐bodied Late Cretaceous marine predators, such as †ichthyodectiforms, †pachyrhizodontids, †pachycormids and †enchodontids (Cavin & Martin 1995; Cavin 2002; Friedman 2009).…”

Section: Figmentioning

confidence: 99%

A Paleocene (Danian) marine osteoglossid (Teleostei, Osteoglossomorpha) from the Nuussuaq Basin of Greenland, with a brief review of Palaeogene marine bonytongue fishes

Capobianco

Foreman

Friedman

2019

Papers in Palaeontology

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The early Palaeogene represents a key interval in the evolution of modern marine fish faunas. Together with the first appearances of many familiar fish lineages characteristic of contemporary marine environments, early Palaeogene marine deposits worldwide feature the occurrence of osteoglossid bonytongues. Their presence in marine rocks is surprising, given that these fishes are strictly associated with freshwater environments in modern settings and in other parts of the fossil record. Despite its possible relevance to faunal recovery after the Cretaceous–Palaeogene (K–Pg) extinction, this marine osteoglossid radiation is relatively understudied. Here we describe an osteoglossid specimen from marine Danian deposits of western Greenland (Eqalulik Formation, northern Nuussuaq Peninsula). It consists of disarticulated cranial, pectoral and vertebral material belonging to a relatively large‐bodied predator, similar to the widespread †Brychaetus but with some distinctive features. This specimen expands the geographical range of extinct osteoglossids to the Arctic and represents one of the earliest records of this group in marine deposits. We review other fossil occurrences of marine osteoglossids, highlighting temporal and biogeographical patterns that characterize their rise, diversification and sudden disappearance in the middle Eocene. It is likely that the transition from freshwater to marine environments occurred around the K–Pg boundary, possibly related to ecological replacement of predatory fish lineages that went extinct at the end of the Cretaceous. Further study of the Eqalulik Formation fauna could yield additional insight into the consequences of the end‐Cretaceous extinction with regard to marine fish evolution and the assembly of modern marine faunas.

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The interaction of resource use and gene flow on the phenotypic divergence of benthic and pelagic morphs of Icelandic Arctic charr (Salvelinus alpinus)

Brachmann

Parsons

Skúlason

et al. 2021

Ecology and Evolution

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Conceptual models of adaptive divergence and ecological speciation in sympatry predict differential resource use, phenotype–environment correlations, and reduced gene flow among diverging phenotypes. While these predictions have been assessed in past studies, connections among them have rarely been assessed collectively. We examined relationships among phenotypic, ecological, and genetic variation in Arctic charr ( Salvelinus alpinus ) from six Icelandic localities that have undergone varying degrees of divergence into sympatric benthic and pelagic morphs. We characterized morphological variation with geometric morphometrics, tested for differential resource use between morphs using stable isotopes, and inferred the amount of gene flow from single nucleotide polymorphisms. Analysis of stable isotopic signatures indicated that sympatric morphs showed similar difference in resource use across populations, likely arising from the common utilization of niche space within each population. Carbon isotopic signature was also a significant predictor of individual variation in body shape and size, suggesting that variation in benthic and pelagic resource use is associated with phenotypic variation. The estimated percentage of hybrids between sympatric morphs varied across populations (from 0% to 15.6%) but the majority of fish had genotypes (ancestry coefficients) characteristic of pure morphs. Despite evidence of reduced gene flow between sympatric morphs, we did not detect the expected negative relationship between divergence in resource use and gene flow. Three lakes showed the expected pattern, but morphs in the fourth showed no detectable hybridization and had relatively low differences in resource use between them. This coupled with the finding that resource use and genetic differentiation had differential effects on body shape variation across populations suggests that reproductive isolation maintains phenotypic divergence between benthic and pelagic morphs when the effects of resource use are relatively low. Our ability to assess relationships between phenotype, ecology, and genetics deepens our understanding of the processes underlying adaptive divergence in sympatry.

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Post-Cretaceous bursts of evolution along the benthic-pelagic axis in marine fishes

Cited by 33 publications

References 47 publications

Integration drives rapid phenotypic evolution in flatfishes

Integration drives rapid phenotypic evolution in flatfishes

A Paleocene (Danian) marine osteoglossid (Teleostei, Osteoglossomorpha) from the Nuussuaq Basin of Greenland, with a brief review of Palaeogene marine bonytongue fishes

The interaction of resource use and gene flow on the phenotypic divergence of benthic and pelagic morphs of Icelandic Arctic charr (Salvelinus alpinus)

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