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103 results for “teleost fish”
Fig. 1 in A Review of the Problematic Extinct Teleost Fish Araripichthys, with a Description of a New Species from the Lower Cretaceous of Venezuela
Fig. 1. Occurrences of Araripichthys discussed in the text. (A) A. axelrodi, from Venezuela (Aptian);
Data from: How predation shaped fish: the impact of fin spines on body form evolution across teleosts
It is well known that predators can induce morphological changes in some fish: individuals exposed to predation cues increase body depth and the length of spines. We hypothesize that these structures may evolve synergistically, as together, these traits will further enlarge the body dimensions of the fish that gape-limited predators must overcome. We therefore expect that the orientation of the spines will predict which body dimension increases in the presence of predators. Using phylogenetic comparative methods, we tested this prediction on the macroevolutionary scale across 347 teleost families, which display considerable variation in fin spines, body depth and width. Consistent with our predictions, we demonstrate that fin spines on the vertical plane (dorsal and anal fins) are associated with a deeper-bodied optimum. Lineages with spines on the horizontal plane (pectoral fins) are associated with a wider-bodied optimum. Optimal body dimensions across lineages without spines paralleling the body dimension match the allometric expectation. Additionally, lineages with longer spines have deeper and wider body dimensions. This evolutionary relationship between fin spines and body dimensions across teleosts reveals functional synergy between these two traits and a potential macroevolutionary signature of predation on the evolutionary dynamics of body shape.
Data from: Computed tomography scanning as a tool for linking the skeletal and otolith-based fossil records of teleost fishes
Micro-computed tomography scanning (µCT scanning) now represents a standard tool for non-destructive study of internal or concealed structure in fossils. Here we report on otoliths found in situ during routine µCT scanning of three-dimensionally preserved skulls of Palaeogene and Cretaceous fishes. Comparisons are made with isolated otolith-based taxa in order to attempt correlations between the body fossil and otolith fossil records. In situ otoliths previously extracted mechanically from specimens of Apogon macrolepis and Dentex laekeniensis match our µCT models. In some cases, we find a high degree of congruence between previously independent taxonomic placements for otolith and skeletal remains (Rhinocephalus, Osmeroides, Hoplopteryx). Unexpectedly, in situ otoliths of the aulopiform Apateodus match isolated otoliths of Late Cretaceous age previously interpreted as belonging to gempylids, a group of percomorph fishes that do not appear in the body fossil record until the Palaeogene. This striking example of convergence suggests constraints on otolith geometry in pelagic predators. The otoliths of Apateodus show a primitive geometry for aulopiforms and lack the derived features of Alepisauroidea, the lizardfish clade to which the genus is often attributed. In situ otoliths of Early Cretaceous fishes (Apsopelix) are not well preserved, and we are unable to identify clear correlations with isolated otolith morphologies. We conclude that the preservation of otoliths suitable for µCT scanning appears intimately connected with the taphonomic history, lithological characteristics of surrounding matrix, and syn- and postdepositional diagenetic effects.
Data from: Evolution of the immune system influences speciation rates in teleost fishes
Teleost fishes constitute the most species-rich vertebrate clade and exhibit extensive genetic and phenotypic variation, including diverse immune defense strategies. The genomic basis of a particularly aberrant strategy is exemplified by Atlantic cod, in which a loss of major histocompatibility complex (MHC) II functionality coincides with a marked expansion of MHC I genes. Through low-coverage genome sequencing (9–39×), assembly and comparative analyses for 66 teleost species, we show here that MHC II is missing in the entire Gadiformes lineage and thus was lost once in their common ancestor. In contrast, we find that MHC I gene expansions have occurred multiple times, both inside and outside this clade. Moreover, we identify an association between high MHC I copy number and elevated speciation rates using trait-dependent diversification models. Our results extend current understanding of the plasticity of the adaptive immune system and suggest an important role for immune-related genes in animal diversification.
The effect of locomotion mode on body shape evolution in teleost fishes
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Data from: Evolution of the immune system influences speciation rates in teleost fishes
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Data from: Computed tomography scanning as a tool for linking the skeletal and otolith-based fossil records of teleost fishes
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Data from: Starvation causes female to male sex reversal through lipid metabolism in the teleost fish, medaka (Oryzias latipes)
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Data from: How predation shaped fish: the impact of fin spines on body form evolution across teleosts
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Data from: A rich diversity of opercle bone shape among teleost fishes
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Data from: Ecological influences and morphological correlates of resting and maximal metabolic rates across teleost fish species
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Data from: Body shape diversity in Triassic‒Early Cretaceous neopterygian fishes: sustained holostean disparity and predominantly gradual increases in teleost phenotypic variety
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Data from: Incremental analysis of vertebral centra can reconstruct the stable isotope chronology of teleost fishes
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Data for: Warming temperatures limit the maximum body length of teleost fishes across a latitudinal gradient in Norwegian waters
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Data from: Automated integration of trees and traits: a case study using paired fin loss across teleost fishes
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Resolving the early divergence pattern of of teleost fish using genome-scale data
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Fig. 4. Tortonian fish otoliths from northern Italy. A in Tortonian teleost otoliths from northern Italy: taxonomic synthesis and stratigraphic significance
Fig. 4. Tortonian fish otoliths from northern Italy. A. Gonostoma sp., Costa Vescovato (IRSNB P 9709). B. Gonostomatidae indet., Mondovi, Madonna della Neve (IRSNB P 9710). C–E. Polyipnus sp.; C. Sant'Alosio, D–E. Stazzano (IRSNB P 9711–P 9713). F. Argyropelecus sp., Sant'Agata Fossili (IRSNB P 9714). G. Polymetme sp., Mondovi, Madonna della Neve (IRSNB P 9715). H. Paralepis sp., Sant'Agata Fossili (IRSNB P 9716). I.?Woodsia sp., Mondovi, Madonna della Neve (IRSNB P 9717). J–K. Maurolicus muelleri (Gmelin, 1789), Sant'Agata Fossili (IRSNB P 9718–P 9719). L. Scopelarchus analis (Brauer, 1902), Mondovi, Madonna della Neve (IRSNB P 9720). M–N. Valenciennellus tripunctulatus (Esmark, 1871), Sant'Agata Fossili (IRSNB P 9721–P 9722). O.?Lestrolepis sp., Sant'Agata Fossili (IRSNB P 9723). P–Q. Bolinichthys italicus (Anfossi & Mosna, 1971), Sant'Agata Fossili (IRSNB P 9724–P 9725). R. Benthosema aff. glaciale (Reinhardt, 1837), Mondovi, Madonna della Neve (IRSNB P 9726). S–T. Benthosema fitchi Brzobohatý & Schultz, 1978; S. Costa Vescovato, T. Sant'Alosio (IRSNB P 9727–P 9728). U. Diaphus befralai Brzobohatý & Nolf, 2000, Mondovi, Madonna della Neve (IRSNB P 9729). V–W. Diaphus cavallonis Brzobohatý & Nolf, 2000, Costa Vescovato (IRSNB P 9730–P 9731). 1 = ventral view; 2 = inner view; 3 = anterior view; 4 = posterior view. Scale bars = 1 mm.
Fig. 12. Tortonian fish otoliths from northern Italy. A–C in Tortonian teleost otoliths from northern Italy: taxonomic synthesis and stratigraphic significance
Fig. 12. Tortonian fish otoliths from northern Italy. A–C. "Gobius" bicornutus (Lin, Girone & Nolf, 2015), Sant'Agata Fossili (IRSNB P 9836–P 9838). D. Aphanopus carbo Lowe, 1839, Costa Vescovato (IRSNB P 9839). E. Nealotus tripes Johnson, 1865, Mondovi, Madonna della Neve (IRSNB P 9840). F–G. Arnoglossus kokeni (Bassoli & Schubert, 1906), Torrente Stirone (IRSNB P 9841–P 9842). H–I. Gobiidae indet., Sant'Agata Fossili (IRSNB P 9843–P 9844). J–K. Microchirus aff. variegatus (Donovan, 1808), Torrente Stirone (IRSNB P 9845–9846). 1 = ventral view; 2 = inner view. Scale bars = 1 mm.
Fig. 11. Tortonian fish otoliths from northern Italy. A in Tortonian teleost otoliths from northern Italy: taxonomic synthesis and stratigraphic significance
Fig. 11. Tortonian fish otoliths from northern Italy. A. "Sparus" doderleini (Bassoli & Schubert, 1906), Sant'Agata Fossili (IRSNB P 9821). B. Lesueurigobius aff. friesii (Malm, 1874), Torrente Stirone (IRSNB P 9822). C. Lesueurigobius aff. suerii (Risso, 1810), Torrente Stirone (IRSNB P 9823). D. Deltentosteus aff. quadrimaculatus (Valenciennes, 1837), Torrente Stirone (IRSNB P 9824). E. Gobius aff. guerini Chaine & Duvergier, 1931, Montegibbio (IRSNB P 9825). F–I. Lesueurigobius stironensis sp. nov., Torrente Stirone (IRSNB P 9689 (holotype)–P 9692). J–L. Deltentosteus sp., Torrente Stirone (IRSNB P 9826–P 9828). M. Antigonia capros Lowe, 1843, Montegibbio (IRSNB P 9829). N. "Gobius" aff. weileri Bauza Rullan, 1955, Torrente Stirone (IRSNB P 9830). O. "Gobius" brioche (Lin, Girone & Nolf, 2015), Montegibbio (IRSNB P 9831). P–Q. Brachydeuterus speronatus (Bassoli, 1906), Montegibbio (IRSNB P 9832–P 9833). R–S. Gobius aff. paganellus Linnaeus, 1758; R. Torrente Stirone, S. Montegibbio (IRSNB P 9834–P 9835). 1 = ventral view; 2 = inner view. Scale bars = 1 mm.
Fig. 2. Tortonian fish otoliths from northern Italy. A in Tortonian teleost otoliths from northern Italy: taxonomic synthesis and stratigraphic significance
Fig. 2. Tortonian fish otoliths from northern Italy. A. Pterothrissus umbonatus (Koken, 1884), Montegibbio (IRSNB P 9855). B. Paraconger sp., Torrente Stirone (IRSNB P 9856). C. Xenomystax sp., Torrente Stirone (IRSNB P 9857). D. Conger conger (Linnaeus, 1758), Torrente Stirone (IRSNB P 9858). E. Argentina sp., Torrente Stirone (IRSNB P 9859). F. Rhynchoconger pantanellii (Bassoli & Schubert, 1906), Torrente Stirone (IRSNB P 9860). G–I. Bathycongrus nagymarosyi (Nolf & Brzobohatý, 1994), Torrente Stirone (IRSNB P 9699–P 9701). J–K. Gnathophis mystax (Delaroche, 1809), Torrente Stirone (IRSNB P 9702–P 9703). L–M. Nansenia sp., Mondovi, Madonna della Neve (IRSNB P 9704–P 9705). N–P. Xenodermichthys senesi Nolf & Brzobohatý, 1994, Mondovi, Madonna della Neve (IRSNB P 9706–P 9708). 1 = ventral view; 2 = inner view. Scale bars = 1 mm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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