Marina Malyutina

National Scientific Center of Marine Biology

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 describ...

Eurycope producta Sars, 1868 is a highly abundant and widely distributed munnopsid species complex within Icelandic waters. The complex differs from all other Eurycope Sars, 1864 species by having a broad and long rostrum with serrated margins, which is subequal in length and width to article 1 of antenna I. Previous molecular evidence to disentang...

Three species of asellote isopods (Crustacea) were found in hydrothermal vent biotopes on the submarine Piip Volcano, Bering Sea, at the depth of 373–472 m. Collection was obtained during 82−nd cruise of the R/V Akademik M.A. Lavrentyev using ROV Comanche-18. One species of the family Janiridae was tentatively identified as Janiralata cf. bilobata....

Four species of paramunnids (Isopoda: Asellota) were found on the Koryak slope in the Bering Sea during 82-nd cruise of the R/V Akademik M.A. Lavrentyev with a remotely operated vehicle (ROV) Comanche-18 in 2018. The paramunnids were collected at depths 415–660 m in vicinity of methane seep area. One species, Notoxenoides cf. setosa Shimomura 2009,...

With increasing pressure to extract minerals from the deep-sea bed, understanding the ecological and evolutionary processes that limit the spatial distribution of species is critical to assessing ecosystem resilience to mining impacts. The aim of our study is to gain a better knowledge about the abyssal isopod crustacean fauna of the central Pacifi...

As part of the New Zealand government Ocean Survey 20/20 programme (OS 20/20, 2006–2013), samples from the Chatham Rise and Challenger Plateau collected in 2007 were analysed to determine the effects of key environmental parameters, in particular sediment and water mass properties, on spatial changes in the community structure (abundance, diversity...

The aim of this dataset is to deliver a sound biogeographic baseline study of the NW Pacific area including our available data from the Sea of Japan, Sea of Okhotsk, Kuril-Kamchatka Trench (KKT), Aleutian Trench (AT), SW Bering Sea, and the NW Pacific open abyssal plain. We aim at compiling a novel book on the biogeography of the NW Pacific faunas,...

A new deep-sea genus of the asellotan family Munnopsidae Lilljeborg, 1864, Pirinectes Malyutina & Brix gen. nov., including two new species, is described from the abyssal manganese nodule area of the Clarion Clipperton Fracture Zone in the north-eastern tropical Pacific. The new genus of the subfamily Eurycopinae Hansen, 1916, which is distinguishe...

The benthos of the Kuril–Kamchatka Trench (KKT) was sampled during the KuramBio II expedition on board the RV Sonne in 2016. Macrobenthos was, for the first time, collected in the KKT hadal zone using an epibenthic sledge. Isopod crustaceans were one of the dominant taxa, and Munnopsidae was the most abundant and diverse asellotan family, comprisin...

The bathymetric ranges of the same deep-sea (2000 m) species in the Sea of Japan and outside it are compared. Among 85 deep-sea species of the Sea of Japan mega- and macrofauna, 25 species are known outside the sea at the depths greater than 2000 m and 45 species are known outside the sea only from the sublittoral and bathyal (2000 m). Remaining 14...

Aim of our study is to gain a better knowledge about the isopod crustacean fauna of the abyssal Clarion Clipperton Fracture Zone (CCZ) located in the central Pacific Ocean. In total, we examined 22 EBS samples taken at 6 abyssal areas in the central pacific manganese nodule area (CCZ and DISCOL). The dataset comprised 619 specimens belonging to 187...

Reductogonium iroquois gen. nov. sp. nov., a new genus and species of paramunnid isopods from the Northwest Pacific open abyssal plain to the east of the Kuril-Kamchatka Trench, is described based on materials from the KuramBio expedition (2012). The new genus is distinguished from other paramunnid genera by its reduced pereonite 7 that lacks appen...

A B S T R A C T Areas of the Northwest (NW) Pacific have been investigated in the last century from board of the Russian RV Vityaz. During the past decade intensive collaboration between German and Russian scientists has yielded a wealth of precious material partly from unknown areas. The samples are comparable and were retrieved using comparative...

During the KuramBio expedition in 2012, macrobenthos samples were collected with an epibenthic sledge from 12 sites on the abyssal plain of the Northwest Pacific Basin adjacent to the Kuril-Kamchatka Trench (KKT) and on the western slope of the KKT, at depths between 4830 and 5780 m. In terms of the peracarid fauna, the NW Pacific abyss was found t...

The asellote family Gnathostenetroididae Kussakin, 1967 is reported for the first time from Australian waters. Four new species of Gnathostenetroides Amar, 1957 from the Great Barrier Reef are described. The genus Maresiella Fresi and Scipione, 1980 is here placed into synonymy with Gnathostenetroides and a new diagnosis is given for Gnathostenetro...

Benthic boundary layer (BBL) communities are a taxonomically and functionally diverse but poorly known component of deep‐sea environments. We investigated macrofaunal assemblages across the upper slope of the Chatham Rise (CR) in the south‐western Pacific in relation to location, depth and sediment variables. Using data from the TAN1116 voyage to t...

Macrofauna (46,343 invertebrates from 41 taxa) were collected by means of a camera-epibenthic sledge (C-EBS) during the expedition SokhoBio (Sea of Okhotsk Biodiversity Studies) on board of the RV Akademik M.A. Lavrentyev in 2015. In total 11 sites and 22 stations were sampled at bathyal and abyssal depths ranging from 1696 m to 4798 m in the Kuril...

Eurycope producta Sars, 1868 and Eurycope inermis Hansen, 1916 are two widely distributed and highly abundant isopod species complexes within Icelandic waters, a region known for its highly variable environment. The two species complexes have bathymetric depth ranges from 103 to 2029 m (E. producta) and from 302 to 2113 m (E. inermis). Molecular ev...

Coxicerberus fukudai (Ito, 1974) (Isopoda) is redescribed from Korean and Japanese localities. Molecular analysis based on two mitochondrial markers (mtCOI and Cytb) of the studied populations shows two diverged lineages, reflected in high (10.5% and 9.5%) pairwise differences and high haplotype diversity. One of the clades is shared by Korean and...

Since the 1990s, the marine benthos of the Greenland–Iceland–Faeroe (GIF) Ridge has been sampled through the BIOICE (Benthic Invertebrates of Icelandic waters) and subsequent IceAGE (Icelandic Marine Animals: Genetics and Ecology) projects. Isopod crustaceans formed one of the prominent macrofaunal groups. Most isopod families occurred on both side...

In the past seven years, the biology of the bathyal, abyssal and hadal faunas of meio- macro-, and megabenthos of the northwestern (NW) Pacific have been intensively investigated by Russian and German partners. A total of four joint expeditions with both RV Akademik M.A. Lavrentyev as well as RV Sonne have provided data on the systematic, evolution...

In the past seven years, the biology of the bathyal, abyssal and hadal faunas of meio- macro-, and megabenthos of the northwestern (NW) Pacific have been intensively investigated by Russian and German partners. A total of four joint expeditions with both RV Akademik M.A. Lavrentyev as well as RV Sonne have provided data on the systematic, evolution...

The deep-sea Munnopsidae Lilljeborg, 1864 of the Kuril Basin of the Sea of Okhotsk, the Bussol Strait, as well as the western abyssal slope of the Kuril-Kamchatka Trench (KKT) off the Bussol Strait were studied. The material was collected during the expedition SokhoBio (Sea of Okhotsk Biodiversity Studies) in the summer of 2015. The first data on t...

In the samples of the expedition SokhoBio (Sea of Okhotsk Biodiversity Studies) arcturoid isopods were present at eight sites in the Kuril Basin of the Sea of Okhotsk (1685-3366. m), the Bussol Strait (2327-2358. m), and the western abyssal slope of the Kuril-Kamchatka Trench (KKT) (3371-3377. m). They were represented by eight species of three gen...

The present paper provides data of the world-wide distribution, abundance and diversity of the rare deep-sea munnopsid genus, Acanthocope Beddard, 1885 and presents an identification key to the 18 known species of Acanthocope. Two new species, Acanthocope puertoricana sp. nov. from the tropical abyssal area near the Puerto Rico Trench and Acanthoco...

We analyzed composition and variations in benthic macrofaunal communities along a transect of the entire length of the Vema-Fracture Zone on board of RV Sonne (SO-237) between December 2014 and January 2015 in order to test whether the Mid-Atlantic Ridge serves as a barrier limiting benthic taxon distribution in the abyssal basins on both sides of...

Two new abyssal species of Dendrotionidae are described: Dendromunna kurilensis sp. nov. from the Northwest Pacific Basin to the east of the Kuril–Kamchatka Trench and D. okhotensis sp. nov. from the Kuril Basin of the Sea of Okhotsk. The new species represent the first records of the family for the Northwest Pacific and the first records of the ge...

Protists such as Komokiaceae represent a huge, unexplored diversity in the abyss (Gooday et al. 1992). They likely play a key role in the food web and structuring of deep-sea benthos (Sokolova 1972), where isopods are abundant and diverse. Deep-sea isopods were initially classified as detritus feeders, but gut-content analyses (e.g. Svavarsson et a...

Supplementary for article Riehl, T., Bober, S., Voltski, I., Malyutina, M.V., Brandt, A., 2016. Caught in the act: An abyssal isopod collected while feeding on Komokiaceae. Marine Biodiversity 1–2. doi:10.1007/s12526-016-0606-y.

The German-Russian expedition KuramBio II (Kurile-Kamchatka Biodiversity Studies II) with RV Sonne has been performed between 16.8.–26.9.2016 in the Kurile-Kamchatka Trench (KKT) region (SO-250). This expedition follows the Russian-German SoJaBio (Sea of Japan Biodiversity Studies) expedition to the Sea of Japan in 2010, the German-Russian KuramBio...

The abyssal seafloor makes up > 60% of our planet´s surface, it is nevertheless largely unexplored. We know very little about how the processes which created it have varied through time, about life on the deep seafloor or about how the hydrosphere, biosphere and lithosphere interact over this vast area. In the Atlantic, transform faults and fractur...

The Greenland-Scotland Ridge (GSR) is a major topographic feature, extending from Greenland to Scotland. It constrains the water exchange between the northernmost North Atlantic Ocean and the Greenland, Iceland and Norwegian Seas (GIN Seas) and thus forms a potential barrier for faunal exchange from the Arctic to the North Atlantic (and vice versa)...

Collections of munnopsid isopods of the BIOICE (Benthic Invertebrates of Iceandic Waters; 1991–2004) and the IceAGE1 (Icelandic Marine Animals: Genetics and Ecology; since 2011) expeditions included ten species of the genus Eurycope Sars, 1864, thereof are two species new to science. Thus, the descriptions of the two new species are presented herei...

In the benthic samples collected during the deep-sea expeditions ANDEEP from the Weddell Sea and DIVA from the Argentine Basin the isopod family Munnopsidae was the most specious and numerous. Among the collected munnopsids three new species of Tytthocope Wilson & Hessler, 1981 have been discovered. Tytthocope is one of six genera of the subfamily...

The skeleton of a natural whale fall discovered in the Southern Ocean at 1,445 m was densely covered by one small, janirid isopod. Jaera tyleri sp. nov. is the first of its genus found in the southern hemisphere and in the deep sea and is described herein. Morphological and molecular investigations revealed the systematic position of this species n...

We report three new species of isopod crustaceans that belong to a rare higher taxon of asellote Isopoda. This taxon does not fit into current classifications. The isopods occurred in abyssal soft sediments, near manganese nodules, and in the vicinity of hydrothermal vents. Given their wide spatial occurrence across the Atlantic and Pacific Oceans,...

Due to isolation and a period of severe anoxic conditions in geologically recent times, biodiversity is low in the deep Sea of Japan. Among a small group of species inhabiting depths below 2500, only one isopod species, Eurycope spinifrons, was found during the SoJaBio expedition in 2010, but it was the most abundant species of all benthic taxa. E....

During the expedition SoJaBio (Sea of Japan Biodiversity studies) a rich collection of peracarid crustaceans from the slope and the deep-sea basin of the Sea of Japan (at depth range from 450 to 3660 m) was made. The superorder Peracarida was recognized as the most abundant taxon of the macrobenthos in the investigated area and comprised 146 specie...

A small collection of isopods of the family Munnopsidae Lilljeborg, 1864, including four species from the slope and the deep-sea basin of the Sea of Japan (Northwest Pacific), was studied. The new species Baeonectes brandtae sp. nov. which occurs at depths of 455–1525 m is described. It is the second species of BaeonectesWilson, 1982 described from...

Faunistic data from a newly designed camera-epibenthic sledge (C-EBS) are presented. These were collected during the joint Russian–German expedition SoJaBio (Sea of Japan Biodiversity Studies) on board the R.V. Akademik Lavrentyev from four transects (A–D) between 460 and 3660 m depth. In total, 244,531 macro- and megafaunal individuals were sample...

The global zoogeographic distribution of the most widespread peracarid species occurring in three or more ocean basins below 2000 m is analysed. Basing on the published data we investigated 45 peracarid species, which have a most widespread distribution and most likely are cosmopolitan. Thirty-three species have a wide distribution in the Northern...

Dubinectes infirmussp. n., Munnopsidae, is described from the Argentine Basin, southwest Atlantic, at depths between 4586-4607 m. The new species is distinguished by a narrow rim of the pleotelson posterior margin which is not raising over its dorsal surface; article 3 of the antennula is subequal in length to article 2; distomedial lobes of male p...

Two new species of deep sea asellotes of the family Munnopsidae, Rectisura slavai sp. nov. and Storthyngura yuzhmorgeo sp. nov. are described from the manganese nodules area in the Clarion-Clipperton Fracture Zone of the Pacific Ocean. The discovery of these new species allowed re-examination of the taxonomic position of two similar species, Storth...

Two northwestern Pacific species of the munnopsid subfamily Eurycopinae, Eurycope pavlenkoi Gurjanova, 1933 and E. ochotensis Kussakin, 1979 are transferred to the other genus of the subfamily, Baeonectes Wilson, 1982, on the basis of the following characteristics: short truncated epipod of maxilliped, broad rostrum without distinct margins, absenc...

The ninth volume of the series “Biota of the Russian waters of the Sea of Japan” is devoted to free-living and parasitic isopods (order Isopoda). The Introduction gives an overview of the general morphology, biology and ecology of the group. The systematic part comprises general taxonomic information on higher-level isopod taxa and the descriptions...

Three new species of the genus Belonectes Wilson & Hessler, 1981, from the munnopsid subfamily Eurycopinae Hansen are described from the deep Weddell Sea, Atlantic sector of the Southern Ocean. Belonectes grasslei sp. nov., B. stoddarti sp. nov., and B. daytoni sp. nov. are the first species of the genus described from the region: previously only t...

Three new species of the genus Belonectes Wilson & Hessler, 1981, from the munnopsid subfamily Eurycopinae Hansen are described from the deep Weddell Sea, Atlantic sector of the Southern Ocean. Belonectes grasslei sp. nov., B. stoddarti sp. nov., and B. daytoni sp. nov. are the first species of the genus described from the region: previously only t...

The munnopsid isopod genus Bathybadistes Hessler & Thistle has undergone several rearrangements since its initialinception.ThisgenuswasoriginallyestablishedforBathybadisteshoplitisHessler&Thistleandincludedeightspecies transferred from Ilyarachna Sars. Kussakin (2003) transferred four species to Echinozone Sars and one species back to Ilyarachna; h...

FIGURE 1. Belonectes grasslei sp. nov., male, holotype, ZMH K- 42034: A, body dorsal view; B, body lateral view; C, body ventral view. Scale bar 1 mm.

FIGURE 5. Belonectes grasslei sp. nov., male, holotype, ZMH K- 42034: maxilla 1, maxilla 2 and maxilliped with enlarged parts, ventral view; left antennula and basis of antenna 2, dorsal view. Scale bars 0.1 mm.

FIGURE 8. Belonectes stoddarti sp. nov., male, holotype, ZMH K- 42037: A, body dorsal views; B, body lateral view; juvenile female, paratype ZMH K- 42038: C, body dorsal views; B, body lateral view. Scale bar 1 mm.

FIGURE 3. Belonectes grasslei sp. nov., juveniles, paratypes, ZMH K- 42036. Female: A, body dorsal view; B, body lateral view; male: C, body dorsal view; D, body lateral view; antennula. Scale bars 1 mm and 0.1 mm.

FIGURE 6. Belonectes grasslei sp. nov., male, holotype, ZMH K- 42034: A, pleopods 1 and 2, lateral view; pleopods 1 – 5, and uropod. Scale bar 0.1 mm.

FIGURE 11. Belonectes daytoni sp. nov., male, holotype, ZMH K- 42039: A, body dorsal views; B, body lateral view; C, anterior body part, ventral view; D, pleotelson, ventral view; E, F, G, pleotelson, different oblique views; H, head, lateral view, left antennula, dorsal view. Scale bar 0.1 mm.

FIGURE 12. Belonectes daytoni sp. nov., male, holotype, ZMH K- 42039: left mandible with enlarged parts, dorsal view, maxillae and maxilliped with enlarged parts, ventral view. Scale bar 0.1 mm.

FIGURE 13. Belonectes daytoni sp. nov., male, holotype, ZMH K- 42039: pleopods 1 – 5. Scale bar 0.1 mm.

FIGURE 2. Belonectes grasslei sp. nov., female, allotype, ZMH K- 42035: A, body dorsal view; B, body lateral view; C, pleotelson without operculum, lateral view; D, pleotelson with operculum, ventral view; E, pleotelson without operculum, ventral view; left antennula; pleopods 3 - 5. Scale bars 1 mm and 0.1 mm.

FIGURE 4. Belonectes grasslei sp. nov., male, holotype, ZMH K- 42034: left and right mandibles, different views with enlarged parts. Scale bars 0.1 mm.

FIGURE 7. Belonectes grasslei sp. nov., juvenile male, paratype, ZMH K- 42036. pereopods 1 – 7. Scale bar 0.1 mm.

FIGURE 9. Belonectes stoddarti sp. nov., male, holotype, ZMH K- 42037: left mandible, dorsal view, with enlarged parts, maxilla 1, maxilla 2 and maxilliped, with enlarged parts, ventral view. Scale bar 0.1 mm.

FIGURE 10. Belonectes stoddarti sp. nov., male, holotype, ZMH K- 42037: pleopods 1 - 5, uropod and antennula; juvenile female, paratype ZMH K- 42038: antennula. Scale bar 0.1 mm.

The Asellota are a highly variable group of Isopoda with many species in freshwater and marine shallow-water environments. However, in the deep sea, they show their most impressive radiation with a broad range of astonishing morphological adaptations and bizarre body forms. Nevertheless, the evolution and phylogeny of the deep-sea Asellota are poor...

A new genus of Munnopsidae Lilljeborg, Microcope gen. nov., is described including Eurycope ovata Birstein, 1970 from the northwestern Pacific, and two new species, collected in the Cape Basin, and Atlantic Sector of the Southern Ocean. The new genus combines characters common for some genera of Eurycopinae Hansen and Betamorphinae Kussakin, but ca...

A new genus of Munnopsidae Lilljeborg, Microcope gen. nov., is described including Eurycope ovata Birstein, 1970 from the northwestern Pacific, and two new species, collected in the Cape Basin, and Atlantic Sector of the Southern Ocean. The new genus combines characters common for some genera of Eurycopinae Hansen and Betamorphinae Kussakin, but ca...

Storthyngura longispina sp. nov. and S. antarctica sp. nov. are described from the deep sea of the West-Atlantic part of Antarc­ tica. The new species are most similar to S. elegans Vanhoffen, 1914 and S. parka Malyutina & Wagele, 2001, forming a group of closely related species. New data on three known species from the region: S. elegans Vanhoffen...

FIGURE 4. Microcope denticulata sp. nov., female, paratype, ZMH K- 41424: pereopods 1 – 4. Scale bar 0.5 mm.

FIGURE 6. Microcope denticulata sp. nov., female, paratype, ZMH K- 41424, pleopods 2 – 5, pleotelson, ventral view (A) and uropod. Scale bar 0.1 mm

FIGURE 8. Microcope levissima sp. nov., paratype female, ZMH K- 41427: A, body dorsal views; B, body lateral view; C, body ventral view. Scale bar 1 mm. D, enlarged pleotelson ventral view; E, pleopod 2 of juvenile female.

FIGURE 9. Microcope levissima sp. nov., female, paratype, ZMH K- 41427, mandibles, dorsal view, maxillae and maxilliped, ventral view. Scale bar 0.1 mm

FIGURE 10. Microcope levissima sp. nov., female, paratype, ZMH K- 41427: pereopods 1, 5 and 6. Scale bar 0.1 mm.

FIGURE 1. Microcope denticulata sp. nov., holotype female, ZMH K- 41423: A, body dorsal view; B, body ventral view; C, body lateral view; paratype female, ZMH K- 41424: D, body dorsal view; E, body lateral view; Additional material from DIVA 2, female, ZMH K- 41425: F, body dorsal view; G, body lateral view; H, lateral margin of ambulosome, ventral...

FIGURE 2. Microcope denticulata sp. nov., female, paratype, ZMH K- 41424: right antennula, dorsal view, antenna 2 dorsal (d) and lateral (l) views and mandibles: dorsal (d), medial (m) and lateral (l) views. Scale bar 0.1 mm.

FIGURE 3. Microcope denticulata sp. nov., female, paratype, ZMH K- 41424: maxillae and maxilliped, ventral view. Scale bar 0.1 mm.