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Lazareva E.M.,Moscow State University | Filatova O.A.,Moscow State University | Burdin A.M.,Alaska SeaLife Center | Burdin A.M.,Pacific Institute of Geography | Hoyt E.,Whale and Dolphin Conservation Society
Zoologicheskii Zhurnal | Year: 2010

Odontocete echolocation has been actively studied in captivity, but there are few studies in the wild. Parameters of echolocation trains in free-ranging killer whales (Orcinus orca) are analyzed under different types of activity (foraging and traveling) and during foraging on different prey (salmon and Atka mackerel). The following parameters are compared: the length of the train, number of clicks in the train, interclick intervals, and repetition rate. Parameters of echolocation trains showed significant differences between the types of activity. Differences in the use of echolocation during foraging on different preys that suggests different strategies of hunting on different fish species were found. Source

Aminin D.L.,RAS Pacific Institute of Bioorganic Chemistry | Silchenko A.S.,RAS Pacific Institute of Bioorganic Chemistry | Avilov S.A.,RAS Pacific Institute of Bioorganic Chemistry | Stepanov V.G.,Pacific Institute of Geography | Kalinin V.I.,RAS Pacific Institute of Bioorganic Chemistry
Natural Product Communications | Year: 2010

Six monosulfated triterpene glycosides, frondoside A 1 (1), okhotoside B 1 (2), okhotoside A 1-1 (3), frondoside A (4), okhotoside A 2-1 (5) and cucumarioside A 2-5 (6), isolated from Cucumaria okhotensis Levin et Stepanov, stimulate spreading and lysosomal activity of mouse macrophages and ROS-formation in the macrophages. The highest macrophage spreading and stimulation of their lysosomal activity was induced by glycosides 1, 4 and 6. All glycosides similarly stimulate ROS formation in macrophages, but glycoside 2 caused minimal stimulation. Source

Kulakov A.P.,Pacific Institute of Geography | Khudyakov G.I.,Pacific Institute of Geography | Miasnikov E.A.,Pacific Institute of Geography
Izvestiya Akademii Nauk, Seriya Geograficheskaya | Year: 2011

The morphostructures of high order (megamorphostructures) are control the main features of the geologic-geomorphological structure of the East-Asian region as well as the some modern regional geoecological processes. The most important from them - the earthquakes, which are result of the geodynamic activity of the megamorphostructures. The definite morphostructures, zones and regions of the high seismic activity had been identified which occupy the most part of the East-Asia region. The other regional geoecological processes: 1. The destruction of the marine margin of mainland and subsidence of it under sea-level. Source

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