Alone in the dark: Distribution, population structure and reproductive mode of the dominant isopod Eurycope spinifrons Gurjanova, 1933 (Isopoda: Asellota: Munnopsidae) from bathyal and abyssal depths of the Sea of Japan

Elsner, Nikolaus O.; Golovan, Olga A.; Malyutina, Marina V.; Brandt, Angelika

doi:10.1016/j.dsr2.2012.07.043

Cited by 21 publications

(4 citation statements)

References 30 publications

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“…living in or on the sediment). Data on reproduction patterns in deep-sea isopods are very limited; continuous recruitment throughout the year and several broods within a lifetime (iteroparity) has been reported [ 39 , 40 ], with each brood yielding up to 30 eggs [ 39 , 41 ].…”

Section: Methodsmentioning

confidence: 99%

A Reverse Taxonomic Approach to Assess Macrofaunal Distribution Patterns in Abyssal Pacific Polymetallic Nodule Fields

et al. 2015

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Heightened interest in the exploitation of deep seafloor minerals is raising questions on the consequences for the resident fauna. Assessing species ranges and determination of processes underlying current species distributions are prerequisites to conservation planning and predicting faunal responses to changing environmental conditions. The abyssal central Pacific nodule belt, located between the Clarion and Clipperton Fracture Zones (CCZ), is an area prospected for mining of polymetallic nodules. We examined variations in genetic diversity and broad-scale connectivity of isopods and polychaetes across the CCZ. Faunal assemblages were studied from two mining claims (the eastern German and French license areas) located 1300 km apart and influenced by different productivity regimes. Using a reverse taxonomy approach based on DNA barcoding, we tested to what extent distance and large-scale changes in environmental parameters lead to differentiation in two macrofaunal taxa exhibiting different functions and life-history patterns. A fragment of the mitochondrial gene Cytochrome Oxidase Subunit 1 (COI) was analyzed. At a 97% threshold the molecular operational taxonomic units (MOTUs) corresponded well to morphological species. Molecular analyses indicated high local and regional diversity mostly because of large numbers of singletons in the samples. Consequently, variation in composition of genotypic clusters between sites was exceedingly large partly due to paucity of deep-sea sampling and faunal patchiness. A higher proportion of wide-ranging species in polychaetes was contrasted with mostly restricted distributions in isopods. Remarkably, several cryptic lineages appeared to be sympatric and occurred in taxa with putatively good dispersal abilities, whereas some brooding lineages revealed broad distributions across the CCZ. Geographic distance could explain variation in faunal connectivity between regions and sites to some extent, while assumed dispersal capabilities were not as important.

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Section: Methodsmentioning

confidence: 99%

A Reverse Taxonomic Approach to Assess Macrofaunal Distribution Patterns in Abyssal Pacific Polymetallic Nodule Fields

et al. 2015

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“…The Eastern Pacific species of the genus Haplomunna are known only by females as well [1,27]. In general, the numerical predominance of females over males is typical for deep-sea isopod species ( [49,57] and personal observations). Due to the small amount of material, at this stage, it is impossible to give a clear explanation for the predominance of males in the collections of the two Western Pacific species of Haplomunna.…”

Section: Discussionmentioning

confidence: 99%

Additions to the Pacific Fauna of Haplomunnidae (Isopoda: Asellota) with Descriptions of Three New Species from the Kuril–Kamchatka Trench Region

Golovan,

Malyutina,

Sharina

2023

Diversity

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Three new species of the rare deep-sea family Haplomunnidae are described from the abyssal of the Northwestern (NW) Pacific adjacent to the Kuril–Kamchatka Trench (KKT) based on material collected during the deep-sea expeditions KuramBio (2012) and SokhoBio (2015). Previously, only three species of the genus Haplomunna Richardson, 1908 were described in the whole North Pacific, including one species from its western part. Haplomunna kurilensis Golovan and Malyutina sp. nov., closely resembling H. japonica (Gamô, 1983) from the upper hadal of the Japan Trench, was the most numerous haplomunnid species in the studied region. Thylakogaster wilsoni Malyutina and Golovan sp. nov., and Abyssaranea minuta Golovan and Malyutina sp. nov., are the first species of their genera described from the Pacific Ocean. For H. kurilensis sp. nov. and T. wilsoni sp. nov., DNA sequences were obtained for 18S rRNA and 28S rRNA genes. The phylogenetic relationship between these species, as well as their position within the Haplomunnidae, were reconstructed using 18S rDNA.

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“…Baeonectes were found at 455-3,435 m depths (Elsner et al 2013;Malyutina et al 2013). Therefore, the regional speciesrichness declines from the abyssal Northwest Map 11.…”

Section: Richness Patternsmentioning

confidence: 98%

“…The Sea of Japan is geographically isolated and has an abnormally high level of dissolved oxygen in its deeper parts; however, its bottom-water oxygen level has declined up to 8-10% in the past three decades (Elsner et al 2013;Huang et al 2019;Huang et al 2018). The abyssal depths of the Sea of Japan were formed in the Cenozoic as a caldera of the mainland (Malyutina and Brandt 2013).…”

Section: Sea Of Japanmentioning

confidence: 99%

Biogeographic Atlas of the Deep NW Pacific Fauna

Saeedi¹,

Brandt²

2020

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We would like to thank the captains and crews of RVs 'Akademik M.A. Lavrentyev' and 'Sonne' , student helpers, and anyone else who contributed to sample management and sorting the specimens. Special thanks to Mark Costello for his advice and Marianna Simões for her help in this book project. A very special thanks to James Reimer for editing and English proofreading of this chapter and to Rachel Downey for English proofreading most of the chapters of this book.

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Alone in the dark: Distribution, population structure and reproductive mode of the dominant isopod Eurycope spinifrons Gurjanova, 1933 (Isopoda: Asellota: Munnopsidae) from bathyal and abyssal depths of the Sea of Japan

Cited by 21 publications

References 30 publications

A Reverse Taxonomic Approach to Assess Macrofaunal Distribution Patterns in Abyssal Pacific Polymetallic Nodule Fields

A Reverse Taxonomic Approach to Assess Macrofaunal Distribution Patterns in Abyssal Pacific Polymetallic Nodule Fields

Additions to the Pacific Fauna of Haplomunnidae (Isopoda: Asellota) with Descriptions of Three New Species from the Kuril–Kamchatka Trench Region

Biogeographic Atlas of the Deep NW Pacific Fauna

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