The fingerprint of chemosymbiosis: origin and preservation of isotopic biosignatures in the nonseep bivalve Loripes lacteus compared with Venerupis aurea

Dreier, Anne; Stannek, Lorena; Blumenberg, Martin; Taviani, Marco; Sigovini, Marco; Wrede, Christoph; Thiel, Volker; Hoppert, Michael

doi:10.1111/j.1574-6941.2012.01374.x

Cited by 16 publications

(53 citation statements)

References 78 publications

(105 reference statements)

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“…() is the measurement of the differences between the isotopic values of the shell organic matrix (conchioline) and the soft tissues; the latter have lower δ 13 C org (about −3‰) and higher δ 15 N org (variable, but on average +1‰), which is consistent with the results of a later study by Dreier et al . (). As based on mollusc data, soft tissues have different isotopic values from shell organic matrix, to aid our discussion, we consider a simplified model of Δ 13 C org and Δ 15 N org between shell organic material and soft tissues as that calculated for bivalves (Mae et al .…”

Section: Discussionmentioning

confidence: 97%

“…; Dreier et al . ; Tornabene et al . ) indicated that, under certain circumstances, it is possible to detect ancient symbioses using shell organic matrix carbon and nitrogen isotope signatures.…”

Section: Discussionmentioning

confidence: 99%

“…; Dreier et al . ) and we extend it to brachiopods. We thus suggest that estimated soft tissue δ 13 C org values of our Gigantoproductus species might have varied from −32.0‰ to −28.9‰ and those of δ 15 N org from −1.0‰ to +5.1‰ (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…; Dreier et al . , ), such as the carbon and nitrogen isotope composition (δ 13 C org , δ 15 N org ) of the primary organic fraction occluded in the shell, after the evaluation of its degree of preservation. To discriminate between a suspension‐feeding lifestyle vs a symbiotic lifestyle, we compared different species of Gigantoproductus occurring together in different palaeoenvironmental settings (Nolan et al .…”

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confidence: 99%

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The giants of the phylum Brachiopoda: a matter of diet?

et al. 2019

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The species of the brachiopod Gigantoproductus are giants within the Palaeozoic sedentary benthos. This presents a dilemma as living brachiopods have low‐energy lifestyles. Although brachiopod metabolic rates were probably higher during the Palaeozoic than today, the massive size reached by species of Gigantoproductus is nevertheless unusual. By examining the diet of Gigantoproductus species from the Visean (Mississippian, Carboniferous) of Derbyshire (UK), we seek to understand the mechanisms that enabled those low‐metabolism brachiopod species to become giants. Were they suspension feeders, similar to all other brachiopods, or did endosymbiosis provide a lifestyle that allowed them to have higher metabolic rates and become giants? We suggest that the answer to this conundrum may be solved by the identification of the biogeochemical signatures of symbionts, through combined analyses of the carbon and nitrogen‐isotopic compositions of the occluded organic matrix within their calcite shells. The shells are formed of substructured columnar units that are remarkably long and a few hundreds of microns wide, deemed to be mostly pristine based on multiple analyses (petrography, cathodoluminescence (CL), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM)); they contain occluded organic fractions detected by TEM, nuclear magnetic resonance (NMR) and gas chromatography mass spectrometry (GC‐MS) analyses. We conclude that the gigantic size reached by the species of Gigantoproductus is probably the result of a mixotroph lifestyle, by which they could rely on the energy and nutrients derived both from photosymbiotic microbes and from filtered particulate food.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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The giants of the phylum Brachiopoda: a matter of diet?

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“…In addition, isotopic signatures of symbiosis (cf. Dreier et al, 2012) offer opportunities for identifying and studying the geological histories of ancient symbioses in animal colonies.…”

Section: Discussionmentioning

confidence: 99%

Differentiating Parasitism and Other Interactions in Fossilized Colonial Organisms

Taylor

2015

Fossil Parasites

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Archaeology and Sclerochronology of Marine Bivalves

Butler

Burchell

Chauvaud

2018

Goods and Services of Marine Bivalves

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In a rapidly changing world, maintenance of the good health of the marine environment requires a detailed understanding of its mechanisms of change, and the ability to detect early signals of a shift away from the equilibrium state that we assume characterized it before there was any significant human impact. Given that instrumental measurements of the oceans go back no further than a few decades, the only way in which we can assess the long-term baseline variability that characterizes the pre-perturbation equilibrium state of the marine environment is by the use of proxy records contained in stratified or layered natural archives such as corals, fish otoliths and bivalve mollusc shells. In this chapter we will look at the ways in which the environmental signals recorded in the shells of bivalve molluscs can be used to shed light on marine variability both in the present and over past centuries and millennia, and specifically how they can be used to study marine climate, the marine environment and the economic and cultural history of the relationship between humans and the oceans. The chapter is divided into two parts: section one describes the morphological, geochemical and crystallographic techniques that are used to obtain information from the shells, while section two covers the use of bivalve shells in a wide range of

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The fingerprint of chemosymbiosis: origin and preservation of isotopic biosignatures in the nonseep bivalve Loripes lacteus compared with Venerupis aurea

Cited by 16 publications

References 78 publications

The giants of the phylum Brachiopoda: a matter of diet?

The giants of the phylum Brachiopoda: a matter of diet?

Differentiating Parasitism and Other Interactions in Fossilized Colonial Organisms

Archaeology and Sclerochronology of Marine Bivalves

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