&lt;strong&gt;New &lt;em&gt;Prionospio&lt;/em&gt; and &lt;em&gt;Aurospio&lt;/em&gt; Species from the Deep Sea (Annelida: Polychaeta)&lt;/strong&gt;

Paterson, Gordon L.J.; Neal, Lenka; Altamira, Iris; Soto, Eulogio H.; Smith, Craig R.; Menot, Lénaïck; Billett, David; Cunha, Marina R.; Marchais-Laguionie, Claire; Glover, Adrian G.

doi:10.11646/zootaxa.4092.1.1

Cited by 19 publications

(39 citation statements)

References 24 publications

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“…The large populations of deposit feeders suggest an accumulation of sediment and food. These shelf troughs could be considered analogous to submarine canyons, which can have depressed diversity due to high dominance in turn explained by organic enrichment (e. g. Paterson et al 2016;Gunton et al 2015). In fact, Ophelina abranchiata has been found to dominate polychaete communities in the canyons on Iberian margin (Paterson et al 2016) and Whittard canyon in NE Atlantic (Gunton et al 2015).…”

Section: Diversity Comparisons Within the Amundsen And Scotia Seasmentioning

confidence: 99%

“…These shelf troughs could be considered analogous to submarine canyons, which can have depressed diversity due to high dominance in turn explained by organic enrichment (e. g. Paterson et al 2016;Gunton et al 2015). In fact, Ophelina abranchiata has been found to dominate polychaete communities in the canyons on Iberian margin (Paterson et al 2016) and Whittard canyon in NE Atlantic (Gunton et al 2015). Finally, many polychaetes collected from trough sites were juveniles (Neal et al 2014), suggestive of recent recruitment, likely as a result of food availability as oligotrophic outer shelf sites did not show such a trend.…”

Section: Diversity Comparisons Within the Amundsen And Scotia Seasmentioning

confidence: 99%

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Comparative marine biodiversity and depth zonation in the Southern Ocean: evidence from a new large polychaete dataset from Scotia and Amundsen seas

et al. 2017

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Based on a dataset of 16,991 and 307 morphospecies of polychaete worms collected from 58 epibenthic sledge deployments across the Scotia and Amundsen Seas, we show that the structures of their shelf, deep-shelf and slope communities are composed of distinct polychaete assemblages spanning regions with Bhigh^, Bintermediate^, and Blow^biodi-versity. Depth has been identified as the main factor structuring the polychaete communities in both seas, countering the prevalent notion of extended eurybathy of the Southern Ocean benthos. From an evolutionary perspective, this strong dissimilarity between shelf and slope fauna could be interpreted as evidence for survival in shelf refugias, rather than migration into deeper waters during glacial maxima. The previously unsampled Amundsen Sea is shown to be diverse, harbouring a high level of taxonomic novelty, with many species new to science. The polychaete community of the inner shelf in the Amundsen Sea (Pine Island Bay) has also been shown to be of deep-sea character, likely due to intrusion of the Circumpolar Deep Water onto the shelf. In the Scotia Sea, our data support the notion of relatively high biodiversity of waters around the South Orkney Islands, South Georgia, and Shag Rocks (all recently established as Marine Protected Areas) and depressed diversity in the extreme environment of Southern Thule.

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Section: Diversity Comparisons Within the Amundsen And Scotia Seasmentioning

confidence: 99%

Section: Diversity Comparisons Within the Amundsen And Scotia Seasmentioning

confidence: 99%

Comparative marine biodiversity and depth zonation in the Southern Ocean: evidence from a new large polychaete dataset from Scotia and Amundsen seas

et al. 2017

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“…The genus Prionospio Malmgren 1867 is one of the most diverse and speciose taxon within the Spionidae (Guggolz et al 2018;Paterson et al 2016). Prionospio is morphologically not well defined, even after several revisions and the erection of closely related subgenera and new genera in a Prionospio complex (Foster 1971;Maciolek 1985;Sigvaldadottir 1998;Wilson 1990).…”

Section: Introductionmentioning

confidence: 99%

“…marinespecies.org/deepsea/). Only a few generic characters are available to distinguish between the genera of the Prionospio complex; often, only the arrangement of the branchiae is important for the characterization of different subgenera and genera (Paterson et al 2016). These characters seem to be sufficient to identify specimens in appropriate conditions, but the morphological identification of these softbodied annelids from deep-sea samples is often difficult.…”

Section: Introductionmentioning

confidence: 99%

“…Species of both genera, Prionospio and Aurospio, are reported to be widespread (Paterson et al 2016) or even cosmopolitan (Mincks et al 2009) (e.g., Aurospio dibranchiata Maciolek 1981). A wide dispersal potential in the abyssal has been reported for many benthic invertebrates (Etter et al 2011;Linse and Schwabe 2018;Schüller and Ebbe 2007); however, these distribution patterns, based solely on morphological taxonomic identification, have to be treated with caution.…”

Section: Introductionmentioning

confidence: 99%

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High diversity and pan-oceanic distribution of deep-sea polychaetes: Prionospio and Aurospio (Annelida: Spionidae) in the Atlantic and Pacific Ocean

et al. 2020

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Prionospio Malmgren 1867 and Aurospio Maciolek 1981 (Annelida: Spionidae) are polychaete genera commonly found in the deep sea. Both genera belong to the Prionospio complex, whose members are known to have limited distinguishing characters. Morphological identification of specimens from the deep sea is challenging, as fragmentation and other damages are common during sampling. These issues impede investigations into the distribution patterns of these genera in the deep sea. In this study, we employ two molecular markers (16S rRNA and 18S) to study the diversity and the distribution patterns of Prionospio and Aurospio from the tropical North Atlantic, the Puerto Rico Trench and the central Pacific. Based on different molecular analyses (Automated Barcode Gap Discovery, GMYC, pairwise genetic distances, phylogenetics, haplotype networks), we were able to identify and differentiate 21 lineages (three lineages composed solely of GenBank entries) that represent putative species. Seven of these lineages exhibited pan-oceanic distributions (occurring in the Atlantic as well as the Pacific) in some cases even sharing identical 16S rRNA haplotypes in both oceans. Even the lineages found to be restricted to one of the oceans were distributed over large regional scales as for example across the Mid-Atlantic Ridge from the Caribbean to the eastern Atlantic (> 3389 km). Our results suggest that members of Prionospio and Aurospio may have the potential to disperse across large geographic distances, largely unaffected by topographic barriers and possibly even between oceans. Their high dispersal capacities are probably explained by their free-swimming long-lived planktonic larvae.

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Toward a reliable assessment of potential ecological impacts of deep‐sea polymetallic nodule mining on abyssal infauna

Lins

Zeppilli

Menot

et al. 2021

Limnology & Ocean Methods

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The increasing demand for metals is pushing forward the progress of deep-sea mining industry. The abyss between the Clarion and Clipperton Fracture Zones (CCFZ), a region holding a higher concentration of minerals than land deposits, is the most targeted area for the exploration of polymetallic nodules worldwide, which may likely disturb the seafloor across large areas and over many years. Effects from nodule extraction cause acute biodiversity loss of organisms inhabiting sediments and polymetallic nodules. Attention to deep-sea ecosystems and their services has to be considered before mining starts but the lack of basic scientific knowledge on the methodologies for the ecological surveys of fauna in the context of deep-sea mining impacts is still scarce. We review the methodology to sample, process and investigate metazoan infauna both inhabiting sediments and nodules dwelling on these polymetallic-nodule areas. We suggest effective procedures for sampling designs, devices and methods involving gear types, sediment processing, morphological and genetic identification including metabarcoding and proteomic fingerprinting, the assessment of biomass, functional traits, fatty acids, and stable isotope studies within the CCFZ based on both first-hand experiences and literature. We recommend multi-and boxcorers for the quantitative assessments of meio-and macrofauna, respectively. The assessment of biodiversity at species level should be focused and/or the combination of morphological with metabarcoding or proteomic fingerprinting techniques. We highlight that biomass, functional traits, and trophic markers may provide critical insights for biodiversity assessments and how statistical modeling facilitates predicting patterns spatially across point-source data and is essential for conservation management.

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<strong>New <em>Prionospio</em> and <em>Aurospio</em> Species from the Deep Sea (Annelida: Polychaeta)</strong>

Cited by 19 publications

References 24 publications

Comparative marine biodiversity and depth zonation in the Southern Ocean: evidence from a new large polychaete dataset from Scotia and Amundsen seas

Comparative marine biodiversity and depth zonation in the Southern Ocean: evidence from a new large polychaete dataset from Scotia and Amundsen seas

High diversity and pan-oceanic distribution of deep-sea polychaetes: Prionospio and Aurospio (Annelida: Spionidae) in the Atlantic and Pacific Ocean

Toward a reliable assessment of potential ecological impacts of deep‐sea polymetallic nodule mining on abyssal infauna

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