Bivalve Mollusks as Hosts in the Fossil Record

Huntley, John Warren; Baets, Kenneth De; Scarponi, Daniele; Linehan, Liane Christine; Epa, Yuwan Ranjeev; Jacobs, Gabriel; Todd, Jonathan A.

doi:10.1007/978-3-030-52233-9_8

Cited by 12 publications

(6 citation statements)

References 99 publications

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“…However, high numbers of dead quagga mussel shells (which have a low mass density) were found present on the substrate during our field study, and were attached to many of these druses. Bivalve shells can persist for hundreds to thousands of years in fluvial environments (e.g., Himson et al, 2020; Huntley et al, 2021; Wolverton et al, 2010), and so it is reasonable to assume that across decades, new populations of mussels may be forced to establish on beds of dead mussels from prior generations, resulting in a lower mass of abiotic grains attached to the sampled surface druses. Multiple layers of quagga mussels would likely give increased protection to bed gravels and further reduce sediment transport, with surface mineral grains buried under multiple layers of quagga mussels.…”

Section: Discussionmentioning

confidence: 99%

Stabilization of fluvial bed sediments by invasive quagga mussels (Dreissena bugensis)

Sanders

Mason

Mills³

et al. 2022

Earth Surf Processes Landf

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River gravel mobility is an important control on river behaviour, morphology, and ecosystem processes. Gravel stability is dependent on abiotic flow and sediment properties, alongside less widely acknowledged biotic processes. The quagga mussel (Dreissena bugensis), a highly invasive bivalve, frequently occurs at high population densities in rivers and lakes. Quagga mussels attach to benthic sediments using byssal threads, which might affect sediment stability and thereby broader river geomorphology. We aimed to (1) characterize controls of quagga mussel sediment attachment by conducting a field survey in an invaded river, (2) investigate resultant changes in the critical shear stress needed to entrain fluvial bed materials via an ex situ flume experiment, for measured average (135 m À2 ) and potential future (270 m À2 ) mussel densities, and (3) model how this may affect sediment transport rates. From field surveys, mean quagga mussel density was 122 m À2 , attaching to an average of 591 g m À2 of mineral bed sediments. Across the survey reach, mussels attached to all grain sizes available, with attachment driven by grain availability, rather than active selection of particular grain sizes. In the ex situ flume experiment, densities of 135 mussels m À2 did not significantly increase the critical shear stress of fluvial bed materials, but a density of 270 mussels m À2 significantly increased critical shear stress by 40%. Estimates of the proportion of time these critical stresses are exceeded at the field site indicated high densities of quagga mussels may reduce the occurrence of a geomorphically active flood event from Q 30 to Q 2 . These results present feasible invasion scenarios, as quagga mussels frequently reach benthic densities orders of magnitude greater than observed here. This study indicates that substantial alterations to bedload sediment transport may occur following quagga mussel invasion. Future geomorphic modelling should include biology to better understand rates and processes of landscape development.

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Section: Discussionmentioning

confidence: 99%

Stabilization of fluvial bed sediments by invasive quagga mussels (Dreissena bugensis)

Sanders

Mason

Mills³

et al. 2022

Earth Surf Processes Landf

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“…Huntley et al . 2021), Rodocanalis does not cause any thickening, callosities or blister pearls in the host shells. Instead, the hosts seem to make space for the hydroids in their shell, but otherwise follow their inherited programme with regard to shell growth and ornament.…”

Section: Submarines and Islands: Ecologies Of The Molluscan Hostsmentioning

confidence: 95%

Putative hydroid symbionts recorded by bioclaustrations in fossil molluscan shells: a revision and reinterpretation of the cecidogenusRodocanalis

Wisshak

Schneider²,

Mikuláš

et al. 2023

Papers in Palaeontology

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The fossil record yields a peculiar phenomenon in different kinds of molluscan shells: bioclaustrations formed around (epi)symbionts during growth of the hosts' shell margin. Four morphologies, two of them formerly considered bioerosion traces, are here united in the parataxonomy of bioclaustration structures under the revised cecidogenus Rodocanalis. These are: (1) simple linear grooves (Rodocanalis linearis csp. nov.) formed below the periostracum in Pleistocene to Recent endobenthic bivalves;(2) series of distally ramifying grooves (Rodocanalis runicus) in Silurian orthoconic nautiloids; (3) irregular networks of grooves (Rodocanalis reticulatus) in Jurassic to Cretaceous bivalves and gastropods; and (4) regular reticulate networks (Rodocanalis geometricus csp. nov.) in Jurassic to Cretaceous gastropods. The linear grooves might be associated with commensal worms, while multiple lines of reasoning point towards hydrozoan symbionts in the case of the

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“…Concurrently, the median number of pits per infested valve decreased significantly. Trematode-induced pits are generally highly aggregated among their Holocene C. gallina hosts, meaning that most hosts have only a few pits, and a few hosts have many (Huntley and Scarponi, 2021). This pattern is common among macroparasite-host interactions and effectively increases the parasite population density (Shaw and Dobson, 1995).…”

Section: Pre-anthropogenic Impact Baselinementioning

confidence: 99%

“…Given their substantial ecological influence, it is useful to have similar long-term data for parasites. Although small, soft-bodied parasites have a low preservation potential, some parasite-host interactions are recorded on the skeleton of their hosts (Huntley et al, 2021), enabling a temporal scale of observation well beyond that of even the longest-term ecological studies (De Baets et al, 2021a). Our goal is to leverage this underexploited fossil record to reconstruct recent par-asite-host dynamics and to place those dynamics in a broader historical context of increasing human influence on ecosystems (e.g., Huntley and Scarponi, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Trematode flatworms (Platyhelminthes) are complex life cycle parasites (i.e., with multiple hosts) that induce a characteristic, preservable growth response (pitting) on their bivalve host's shell interior (Ruiz and Lindberg, 1989;Huntley et al, 2021). We use the Holocene sedimentary record to assess parasitic infestation in Chamelea gallina-an ecologically and economically important bivalve-before and after the onset of significant human influence in shoreface ecosystems of the Adriatic Sea, one of the most heavily altered marine regions globally (Lotze et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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A sea of change: Tracing parasitic dynamics through the past millennia in the northern Adriatic, Italy

Fitzgerald,

Ryan,

Scarponi

et al. 2024

Geology

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Our study uses data from Holocene core samples and modern death assemblages to understand how human-induced environmental change in the northern Adriatic Sea (Italy) may have affected parasite-host dynamics in the economically important bivalve Chamelea gallina. Thirty-one radiocarbon dates confirm temporal distinctness between the periods before and after the onset of significant human influence and confirm that trematode prevalence has decreased by an order of magnitude over the past ∼2 k.y. The median number of parasite-induced pits per bivalve host and parasite aggregation has also decreased significantly, signaling a substantial decrease in the effective population size of digenean trematodes. Gaussian finite mixture modeling of pit size does not support the hypothesis of parasite extinction. Combined, these results indicate the (potentially ongoing) collapse of parasite-host interactions in C. gallina in concert with human influence on the Adriatic and its transition to an urban sea.

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Bivalve Mollusks as Hosts in the Fossil Record

Cited by 12 publications

References 99 publications

Stabilization of fluvial bed sediments by invasive quagga mussels (Dreissena bugensis)

Stabilization of fluvial bed sediments by invasive quagga mussels (Dreissena bugensis)

Putative hydroid symbionts recorded by bioclaustrations in fossil molluscan shells: a revision and reinterpretation of the cecidogenusRodocanalis

A sea of change: Tracing parasitic dynamics through the past millennia in the northern Adriatic, Italy

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