Lycodapus (Pisces: Zoarcidae) of eastern Bering Sea and nearby Pacific Ocean, with three new species and a revised key to the species

1981 ◽  
Vol 59 (4) ◽  
pp. 667-678 ◽  
Author(s):  
Alex E. Peden ◽  
M. Eric Anderson

Lycodapus leptus n.sp., L. poecilus n.sp., and L. psarostomatus n.sp. are described from the eastern Bering Sea. A new key to all known species of Lycodapus is presented. In addition, L. fierasfer Gilbert, L. parviceps Gilbert, and L. derjugini Andriashev are recognized from the Bering Sea and L. microdon Schmidt is recognized from the Sea of Okhotsk. The northern range limit of Lycodapus dermatinus Gilbert is established from a sea mount off southeastern Alaska. A specimen of Lycodapus that cannot be identified to species represents the most southern record for the genus in Asiatic waters.

Zootaxa ◽  
2019 ◽  
Vol 4545 (1) ◽  
pp. 1 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
MAI HIBINO

The present study deals with a collection of deep-sea shrimp of the pandalid genus Pandalopsis Spence Bate, 1888 from the Nemuro Strait, Hokkaido, southwestern part of the Sea of Okhotsk. Three new species are described and illustrated: Pandalopsis capillus n. sp., P. houyuu n. sp. and P. princeps n. sp. In addition, Pandalopsis glabra Kobjakova, 1936, a species endemic to the Sea of Okhotsk, is supplementary reported. Most specimens were collected from steep slopes or hard bottoms at depths greater than 400 m by commercial shrimp trap or gill nets operated by local fishermen. Differentiation of the new species is primarily based on a morphological comparison, supplemented by a preliminary genetic analysis of partial segments of the mitochondrial 16S rRNA gene. An identification key to the species of Pandalopsis is presented. 


Chemosphere ◽  
2016 ◽  
Vol 157 ◽  
pp. 174-180 ◽  
Author(s):  
Olga N. Lukyanova ◽  
Vasiliy Yu. Tsygankov ◽  
Margarita D. Boyarova ◽  
Nadezhda K. Khristoforova

2021 ◽  
Vol 946 (1) ◽  
pp. 012024
Author(s):  
P D Kuznetsov ◽  
E A Rouvinskaya ◽  
O E Kurkina ◽  
A A Kurkin

Abstract This work is devoted to the study of the regimes of transformation of baroclinic tidal waves under the conditions of the Far Eastern seas within the framework of a fully nonlinear numerical model. Two sections were selected to study the features of wave dynamics – in the Sea of Okhotsk (Sakhalin Island shelf) and in the Bering Sea (near Cape Navarin). On the basis of the performed calculations, regional and seasonal features of the transformation of baroclinic waves and the structure of the flow induced by them were revealed. It is shown that the dynamics in the winter season is less intensive. The rotation effect on the formation of solibore in the studied conditions is analyzed. The obtained estimates of wave amplitudes and velocities are consistent with the published data of field observations in the Sea of Okhotsk. For the Bering Sea, the conditions are shown to be favorable for the generation of intensive internal waves, which indirectly confirms the hypothesis of influence of such waves on the formation of underwater sand dunes.


2001 ◽  
Vol 33 ◽  
pp. 449-456 ◽  
Author(s):  
Kazutaka Tateyama ◽  
Hiroyuki Enomoto

AbstractSea-ice fluctuations in the Sea of Okhotsk and the Bering Sea during the winters of 1992−99 were investigated by using the Special Sensor Microwave/ Imager dataset and a new ice-property retrieval algorithm This algorithm can distinguish between ice types such as fast ice floes, young ice and new ice, in an area covered by concentrations of >80% ice, and also has improved display resolution because it uses one of the 85 GHz channels. The ice thicknesses derived from the ice-thickness parameter of the new algorithm were compared with ship-based ice-thickness measurements, and were assumed to be 1−10, 11−34, 35−85 and 86−120 cm for new ice, young ice, floes (first-year ice) and fast ice, respectively. The results showed that ice volume can be small even if the ice area is large, due to thinness of the ice (e.g. in 1999 in the Sea of Okhotsk). A significant out-of-phase response, i.e. ice volume is larger in the Sea of Okhotsk when ice volume is smaller in the Bering Sea, was observed. The period of this see-saw showed two different time-scales, which were short (1 week) and long (2−4 weeks).


Zootaxa ◽  
2019 ◽  
Vol 4567 (2) ◽  
pp. 236
Author(s):  
ROBERT P. STONE ◽  
HELMUT LEHNERT ◽  
GERALD R. HOFF

A total of 493 sponges were collected with a bottom trawl during annual groundfish stock assessment surveys in the eastern Bering Sea in 2013, 2015, and 2016 to build an inventory of species in this largely unexplored region. We report here principally on the demosponge fauna collected during those surveys because identifications of hexactinellids are incomplete. We identified 42 unique demosponge taxa from the collection including geographical range extensions for 30 species; seven are new records for the Pacific Ocean. The collection also included three species new to science; two have been previously described (Plicatellopsis borealis Lehnert & Stone 2017, Spongosorites beringensis Lehnert & Stone 2017) and Antho ridgwayi sp. nov. described here. The new species differed from all northern hemisphere congeners in the complements and sizes of spicules. We document that the region is more species rich than previously suspected, particularly the continental slope where the majority of hexactinellid sponges are located. 


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