Kirill Minin

P.P. Shirshov Institute of Oceanology

An expedition to study the ecosystems of the Atlantic sector of the Antarctic was carried out in cruise 87 of R/V Akademik Mstislav Keldysh between January 19 and February 14, 2022. The studies were carried out in the key regions for understanding modern processes in the ecosystem of the Southern Ocean and in the regions of interest for Russian fis...

In 2016, three specimens of Caymanostella were collected from the Kuril-Kamchatka Trench area at depths of 5101-5134 m. Comparative morphological analysis revealed that the new specimens are similar to Caymanostella spinimarginata, the most geographically distant species (Atlantic Ocean). The new specimens were identified as C. cf. spinimarginata....

In 2016, three specimens of Caymanostella were collected from the Kuril-Kamchatka Trench area at depths of 5101–5134 m. Comparative morphological analysis revealed that the new specimens are similar to Caymanostella spinimarginata, the most geographically distant species (Atlantic Ocean). The new specimens were identified as C. cf. spinimarginata....

During 79th cruise of RV Akademik Mstislav Keldysh twelve trawl hauls were collected in Powell Basin and adjacent area at depths 370–3771 m. The structure of the benthic assemblages was highly variable when considered at the macrotaxon level. The main factors shaping the taxonomical structure of the sampled assemblages were depth, near-bottom curre...

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,...

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...

Echinoderms collected in the Kuril-Kamchatka Trench (KKT) at depths greater than 6000 m by expeditions onboard RV Vityaz and Sonne (KuramBio II) are listed, with some taxonomic and biogeographic remarks. The echinoderm fauna of the KKT (>6000 m) includes 44 species, of which 29 were determined to the species level and 15 to the generic level; 14 sp...

During the 39th cruise of RV Professor Logachev ecological studies of the Russian exploration area in the Central part of the Northern Mid-Atlantic Ridge were conducted. New data on the composition and structure of benthic communities as well as composition and distribution of ichthyofauna were obtained. (Russian version of DOI: 10.1134/S0001437019...

Two new myriotrochid genera and a new species are described on the basis of material collected during the Russian-German expeditions KuramBio and KuramBio II in the Kuril-Kamchatka Trench area. Within the family Myriotrochidae eight types of wheel-like deposits are distinguished. Psilotrochus gen. n. and Sonnetrochus gen. n. possess 10 tentacles an...

During the 39th cruise of RV Professor Logachev, ecological studies of the Russian exploration area in the central part of the Northern Mid-Atlantic Ridge were conducted. New data on the composition and structure of benthic communities as well as composition and distribution of ichthyofauna were obtained.

New samples of abyssal echinoderms taken in the Sea of Okhotsk by the SokhoBio expedition have been examined and analyzed. Taking into account this new data, 34 echinoderm species are distributed deeper than 2000. m in the Sea of Okhotsk. Among them, 10 species are found in the Sea of Okhotsk for the first time, and 6 species are found in the abyss...

Two unprecedented triterpene glycosides, fallaxosides B1 and D3 with aglycones of new skeletal types were isolated from the sea cucumber Cucumaria fallax (Cucumariidae, Dendrochirotida). The first of these aglycones is formed as result of intramolecular aldol condensation of a precursor having 1,6-diketone functionality, while the second one by pin...

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...

Four new trisulfated triterpene glycosides, fallaxosides D4 (1), D5 (2), D6 (3) and D7 (4) have been isolated from the sea cucumber Cucumaria fallax (Cucumariidae, Dendrochirotida). The structures of the glycosides have been elucidated by 2D NMR spectroscopy and HRESIMS. All the glycosides have the lanostane aglycones of a rare non-holostane type w...

Four new triterpene glycosides, fallaxosides C1 (1), C2 (2), D1 (3) and D2 (4) along with the known cucumarioside A3-2 (5) and koreoside A (6) have been isolated from the sea cucumber Cucumaria fallax (Cucumariidae, Dendrochirotida). Structures of the glycosides have been elucidated by 2D NMR spectroscopy and mass spectrometry. All of the glycoside...

Taxonomic composition and ecological structure of benthic communities of the southern part of St. Anna Trough were investigated during the 54th and 59th cruises of RV Akademik Mstislav Keldysh. Material was collected using Sigsbee trawl at 10 stations arranged in two transects (depth range 57–554 m). It was shown that benthic communities of the wes...

Gracilechinus is a widely distributed genus of regular echinoids with a centre of species diversity in the North Atlantic (five of 10 species). Only three species of this genus are known from the Pacific Ocean: Gracilechinus multidentatus, G. euryporus and G. lucidus. The first two species were previously assigned to the genus Echinus, which differ...

Echinoidea and Asteroidea collected in the Kuril-Kamchatka Trench area by the KuramBio Expedition were examined. Altogether 20 species belonging to 16 genera were found, among them six species and two genera were recorded in the North Pacific for the first time. Morphological variability of Abyssaster tara suggests that this species is congeneric w...

A study of the morphological variability of seven species of sea urchins of the genus Echinus from the Northeast Atlantic and Arctic with different depth preferences showed that in the group of species E. tenuispinus, E. esculentus, E. melo, E. acutus, E. elegans, E. affinis, and E. alexandri, arranged based on increasing depth of occurrence, the m...

The composition and distribution of the macrobenthic communities in the Ob estuary and the adjacent Kara Sea shelf were studied during the 54th cruise of the R/V Akademik Mstislav Keldysh. With the transition from the Ob River’s mouth to the open parts of the sea, the gradual changes of the bottom biocenoses included changes in the leading taxa. Al...

Composition and distribution of macrobenthic communities in the Ob estuary (Obskaya Guba) and the adjacent Kara Sea shelf were studied during Cruise 54 of R/V Akademik Mstislav Keldysh. From the Ob River esruary to open parts of the sea gradual changes of bottom biocenoses included changes in leading taxa. Along with increase in salinity freshwater...