Evolutionary trends and ecology of Mesozoic decapod crustaceans

Förster, Reinhard

doi:10.1017/s0263593300010518

Cited by 44 publications

(34 citation statements)

References 6 publications

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“…Habitat differentiation in body size was also reported for another clade of crustaceans, the stomatopods [58]. The small size of crab carapaces and their reduced abdomen early in their evolutionary history [29,59] may have helped them to invade and radiate in Late Jurassic reef environments because the reef framework increased the number of places to hide from predators. Conversely, the relatively long tails and large size of lobsters may have limited early lobsters from invading and radiating in Late Jurassic reefs because lobsters are rare in Mesozoic reefs [24].…”

Section: Discussionmentioning

confidence: 90%

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Environmental and scale-dependent evolutionary trends in the body size of crustaceans

et al. 2015

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The ecological and physiological significance of body size is well recognized. However, key macroevolutionary questions regarding the dependency of body size trends on the taxonomic scale of analysis and the role of environment in controlling long-term evolution of body size are largely unknown. Here, we evaluate these issues for decapod crustaceans, a group that diversified in the Mesozoic. A compilation of body size data for 792 brachyuran crab and lobster species reveals that their maximum, mean and median body size increased, but no increase in minimum size was observed. This increase is not expressed within lineages, but is rather a product of the appearance and/or diversification of new clades of larger, primarily burrowing to shelter-seeking decapods. This argues against directional selective pressures within lineages. Rather, the trend is a macroevolutionary consequence of species sorting: preferential origination of new decapod clades with intrinsically larger body sizes. Furthermore, body size evolution appears to have been habitat-controlled. In the Cretaceous, reef-associated crabs became markedly smaller than those in other habitats, a pattern that persists today. The long-term increase in body size of crabs and lobsters, coupled with their increased diversity and abundance, suggests that their ecological impact may have increased over evolutionary time.

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Section: Discussionmentioning

confidence: 90%

“…[26,28,29,71])-was accompanied by a progressive increase (due, probably, to species sorting) in the average body size of lobsters and crabs. Decapods also became more common prey in the Mesozoic [72].…”

Section: Discussionmentioning

confidence: 99%

Environmental and scale-dependent evolutionary trends in the body size of crustaceans

et al. 2015

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“…From the Late Jurassic to the Early Cretaceous, there was a replacement of highly diverse basal brachyuran (crab) lineages, such as Homolodromioidea, by other species-rich lineages, including Raninoidea and Calappoidea (Förster, 1985;Luque, 2015). This was accompanied by an environmental shift from reef-dwelling taxa to those preferring muddier, deeper, and colder waters (Krobicki & Zatoń, 2008).…”

Section: (E) Arthropodsmentioning

confidence: 99%

Biotic and environmental dynamics through theLateJurassic–EarlyCretaceous transition: evidence for protracted faunal and ecological turnover

et al. 2016

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The Late Jurassic to Early Cretaceous interval represents a time of environmental upheaval and cataclysmic events, combined with disruptions to terrestrial and marine ecosystems. Historically, the Jurassic/Cretaceous (J/K) boundary was classified as one of eight mass extinctions. However, more recent research has largely overturned this view, revealing a much more complex pattern of biotic and abiotic dynamics than has previously been appreciated. Here, we present a synthesis of our current knowledge of Late Jurassic-Early Cretaceous events, focusing particularly on events closest to the J/K boundary. We find evidence for a combination of short-term catastrophic events, large-scale tectonic processes and environmental perturbations, and major clade interactions that led to a seemingly dramatic faunal and ecological turnover in both the marine and terrestrial realms. This is coupled with a great reduction in global biodiversity which might in part be explained by poor sampling. Very few groups appear to have been entirely resilient to this J/K boundary 'event', which hints at a 'cascade model' of ecosystem changes driving faunal dynamics. Within terrestrial ecosystems, larger, more-specialised organisms, such as saurischian dinosaurs, appear to have suffered the most. Medium-sized tetanuran theropods declined, and were replaced by larger-bodied groups, and basal eusauropods were replaced by neosauropod faunas. The ascent of paravian theropods is emphasised by escalated competition with contemporary pterosaur groups, culminating in the explosive radiation of birds, although the timing of this is obfuscated by biases in sampling. Smaller, more ecologically diverse terrestrial non-archosaurs, such as lissamphibians and mammaliaforms, were comparatively resilient to extinctions, instead documenting the origination of many extant groups around the J/K boundary. In the marine realm, extinctions were focused on low-latitude, shallow marine shelf-dwelling faunas, corresponding to a significant eustatic sea-level fall in the latest Jurassic. More mobile and ecologically plastic marine groups, such as ichthyosaurs, survived the boundary relatively unscathed. High rates of extinction and turnover in other macropredaceous marine groups, including plesiosaurs, are accompanied by the origin of most major lineages of extant sharks. Groups which occupied both marine and terrestrial ecosystems, including crocodylomorphs, document a selective extinction in shallow marine forms, whereas turtles appear to have diversified. These patterns suggest that different extinction selectivity and ecological processes were operating between marine and terrestrial ecosystems, which were ultimately important in determining the fates of many key groups, as well as the origins of many major extant lineages. We identify a series of potential abiotic candidates for driving these patterns, including multiple bolide impacts, several episodes of flood basalt eruptions, dramatic climate change, and major disruptions to oceanic systems. The J/K t...

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“…A ocorrência contínua destes, assim como os calianassídeos, tanto nas camadas que tipificam ambiente costeiro quanto nas de mangue, sugere que eles possuem uma considerável plasticidade ecológica (Forster, 1985). O aspecto reduzido do abdômen e sua inflexão com o esterno, a fusão dos esternitos 1, 2 e 3, o aspecto indistinto dos esternitos 6, 7 e 8 e o maior tamanho dos esternitos 4 e 5 em relação aos demais, representa uma adaptação ao interior do substrato, já que o abdômen bem desenvolvido impedia rápida locomoção no benthos.…”

Section: Considerações Paleobiológicasunclassified

“…O aspecto reduzido do abdômen e sua inflexão com o esterno, a fusão dos esternitos 1, 2 e 3, o aspecto indistinto dos esternitos 6, 7 e 8 e o maior tamanho dos esternitos 4 e 5 em relação aos demais, representa uma adaptação ao interior do substrato, já que o abdômen bem desenvolvido impedia rápida locomoção no benthos. Esta especialização foi importante para a sobrevivência do grupo, quando foi reduzida a ameaça de predadores e aumentou no ecoespaço marinho a competição por espaço e alimentação (Forster, 1985;Matondo & Demaio, 2015).…”

Section: Considerações Paleobiológicasunclassified

Raninidae Crustaceans of the Maria Farinha Formation (Paleocene-Eocene), Pernambuco State, Brazil

et al. 2016

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Evolutionary trends and ecology of Mesozoic decapod crustaceans

Cited by 44 publications

References 6 publications

Environmental and scale-dependent evolutionary trends in the body size of crustaceans

Environmental and scale-dependent evolutionary trends in the body size of crustaceans

Biotic and environmental dynamics through theLateJurassic–EarlyCretaceous transition: evidence for protracted faunal and ecological turnover

Raninidae Crustaceans of the Maria Farinha Formation (Paleocene-Eocene), Pernambuco State, Brazil

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