Structure, attachment, replacement and growth of teeth in bluefish, Pomatomus saltatrix (), a teleost with deeply socketed teeth

Bemis, William E.; Giuliano, Anne; McGuire, Betty

doi:10.1016/j.zool.2005.09.004

Cited by 49 publications

(51 citation statements)

References 20 publications

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“…Rates of tooth loss and regeneration of actinopterygian fishes are poorly constrained and vary with taxon, although teeth are replaced continuously throughout the life of the individual (30). However, in at least some taxa, many teeth are resorbed, rather than shed, during tooth replacement, so the number of teeth in the sedimentary record is likely an underrepresentation of teeth produced (30,31).…”

Section: Resultsmentioning

confidence: 99%

New Age of Fishes initiated by the Cretaceous−Paleogene mass extinction

Sibert

Norris

2015

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

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Ray-finned fishes (Actinopterygii) comprise nearly half of all modern vertebrate diversity, and are an ecologically and numerically dominant megafauna in most aquatic environments. Crown teleost fishes diversified relatively recently, during the Late Cretaceous and early Paleogene, although the exact timing and cause of their radiation and rise to ecological dominance is poorly constrained. Here we use microfossil teeth and shark dermal scales (ichthyoliths) preserved in deep-sea sediments to study the changes in the pelagic fish community in the latest Cretaceous and early Paleogene. We find that the Cretaceous−Paleogene (K/Pg) extinction event marked a profound change in the structure of ichthyolith communities around the globe: Whereas shark denticles outnumber ray-finned fish teeth in Cretaceous deep-sea sediments around the world, there is a dramatic increase in the proportion of ray-finned fish teeth to shark denticles in the Paleocene. There is also an increase in size and numerical abundance of ray-finned fish teeth at the boundary. These changes are sustained through at least the first 24 million years of the Cenozoic. This new fish community structure began at the K/Pg mass extinction, suggesting the extinction event played an important role in initiating the modern “age of fishes.”

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Section: Resultsmentioning

confidence: 99%

New Age of Fishes initiated by the Cretaceous−Paleogene mass extinction

Sibert

Norris

2015

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

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“…In basal polyphyodont vertebrates, like sharks, tooth replacement occurs in tooth families, where discrete tooth positions contain a developmentally staggered series of replacement teeth (Reif, 1984;Smith et al, 2009a). Although a few fish species, such as zebrafish, medaka and gobies, have been reported to have tooth families (Abduweli et al, 2014;Huysseune, 2006;Huysseune et al, 1998;Moriyama et al, 2010;Van der heyden and Huysseune, 2000), most teleosts lack obvious multigerm tooth families, instead appearing to replace teeth on an individual basis -as has been termed one-for-one replacement, such as in rainbow trout, Lake Malawi cichlids, Mexican tetra, among others (Atukorala and Franz-Odendaal, 2014;Bemis et al, 2005;Fraser et al, 2006Fraser et al, , 2013Kerr, 1960;Motta, 1984;Wakita et al, 1977). In both cases, replacement teeth can be present on the tooth plate before the previous tooth is shed and can contribute to the functional dentition.…”

Section: Unique Genetic Basis Of Evolved Tooth Gainmentioning

confidence: 99%

Distinct developmental and genetic mechanisms underlie convergently evolved tooth gain in sticklebacks

et al. 2015

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Teeth are a classic model system of organogenesis, as repeated and reciprocal epithelial and mesenchymal interactions pattern placode formation and outgrowth. Less is known about the developmental and genetic bases of tooth formation and replacement in polyphyodonts, which are vertebrates with continual tooth replacement. Here, we leverage natural variation in the threespine stickleback fish Gasterosteus aculeatus to investigate the genetic basis of tooth development and replacement. We find that two derived freshwater stickleback populations have both convergently evolved more ventral pharyngeal teeth through heritable genetic changes. In both populations, evolved tooth gain manifests late in development. Using pulse-chase vital dye labeling to mark newly forming teeth in adult fish, we find that both high-toothed freshwater populations have accelerated tooth replacement rates relative to lowtoothed ancestral marine fish. Despite the similar evolved phenotype of more teeth and an accelerated adult replacement rate, the timing of tooth number divergence and the spatial patterns of newly formed adult teeth are different in the two populations, suggesting distinct developmental mechanisms. Using genome-wide linkage mapping in marine-freshwater F2 genetic crosses, we find that the genetic basis of evolved tooth gain in the two freshwater populations is largely distinct. Together, our results support a model whereby increased tooth number and an accelerated tooth replacement rate have evolved convergently in two independently derived freshwater stickleback populations using largely distinct developmental and genetic mechanisms.

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“…Species which put considerable effort into growing their teeth and have low turnover, or resorb teeth rather than shedding them (Bemis et al, 2005), could produce fewer ichthyoliths than a species which produces numerous, but oftentimes less sturdy teeth which are regularly shed. The majority of the ichthyolith accumulation rate signal is driven by the smallest teeth, which likely are derived from a combination of small species, juvenile fish, and the pharyngeal tooth battery.…”

Section: Biological Ichthyolith Metrics Fish Production: Ichthyolith mentioning

confidence: 99%

Methods for isolation and quantification of microfossil fish teeth and elasmobranch dermal denticles (ichthyoliths) from marine sediments

Sibert

Cramer

Hastings

et al. 2017

Palaeontologia Electronica

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Structure, attachment, replacement and growth of teeth in bluefish, Pomatomus saltatrix (), a teleost with deeply socketed teeth

Cited by 49 publications

References 20 publications

New Age of Fishes initiated by the Cretaceous−Paleogene mass extinction

New Age of Fishes initiated by the Cretaceous−Paleogene mass extinction

Distinct developmental and genetic mechanisms underlie convergently evolved tooth gain in sticklebacks

Methods for isolation and quantification of microfossil fish teeth and elasmobranch dermal denticles (ichthyoliths) from marine sediments

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