The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic oceans: Anonyx laticoxae group

1986 ◽  
Vol 64 (11) ◽  
pp. 2603-2623 ◽  
Author(s):  
D. H. Steele
Keyword(s):  
New Species ◽  
North Atlantic ◽  
North Pacific ◽  
Pacific Region ◽  
North Atlantic Region ◽  
Atlantic Region ◽  
The North ◽  
North Pacific Region ◽  
The North Atlantic ◽  
The North Pacific

Thirteen species of the Anonyx laticoxae group (uropod 2 with the rami not broadened and with the inner ramus not constricted) are listed for the North Pacific region. Five new species, Anonyx schefferi, Anonyx stegnegeri, Anonyx gurjanovai, Anonyx hurleyi, and Anonyx petersoni are described. Anonyx japonicus is synonymized with Anonyx affinis, and Anonyx lebedi and A. orientalis are raised to full species. Eleven of these species are known only from the North Pacific region. Anonyx laticoxae and Anonyx affinis are the only two that are also found in the North Atlantic region.

The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic oceans: Anonyx compactus group

1989 ◽  
Vol 67 (8) ◽  
pp. 1945-1954 ◽  
Author(s):  
D. H. Steele
Keyword(s):  
North Atlantic ◽  
North Pacific ◽  
Pacific Region ◽  
North Atlantic Region ◽  
Atlantic Region ◽  
Normal Length ◽  
The North ◽  
North Pacific Region ◽  
The North Atlantic ◽  
The North Pacific

The Anonyx compactus group is characterized by the morphology of the inner ramus of the second uropod, which is of normal length and depth but is completely constricted distally and bears a long spine at the constriction. This group comprises eight species of which three, Anonyx attenuatus, Anonyx stappersi, and Anonyx stebbingi, are newly described. Anonyx stappersi was identified as Chironesimus debruyni by L. Stappers and A. stebbingi as A. ampulloides by T. R. R. Stebbing. Seven of these species are known from the North Pacific region, and three from the North Atlantic region, but none has a circumpolar distribution.

Geodia starki sp. nov. (Porifera, Demospongiae, Astrophorida) from the Aleutian Islands, Alaska, USA

2013 ◽  
Vol 94 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Helmut Lehnert ◽  
Robert P. Stone ◽  
David Drumm
Keyword(s):  
New Species ◽  
North Atlantic ◽  
Bering Sea ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Aleutian Islands ◽  
The North ◽  
The North Atlantic ◽  
The North Pacific ◽  
A New Species

A new species of Geodia is described from the North Pacific, collected in the summer of 2012 in the western Aleutian Islands. Geodia starki sp. nov. differs from all known species of Geodia by the possession of two categories of sterrasters and exceptionally large megascleres. The new species is compared with congeners of the North Pacific Ocean, Bering Sea, Arctic and the North Atlantic Oceans.

A new sea star of the genus Hippasteria (Asteroidea: Goniasteridae) from the Aleutian Islands

Zootaxa ◽  
2011 ◽  
Vol 2963 (1) ◽  
pp. 48 ◽  
Author(s):  
R. N. CLARK ◽  
STEPHEN C. JEWETT
Keyword(s):  
New Species ◽  
North Atlantic ◽  
North Pacific ◽  
Aleutian Islands ◽  
Sea Star ◽  
The North ◽  
The North Atlantic ◽  
The North Pacific ◽  
A New Species

A new species of goniasterid sea star, Hippasteria aleutica sp. nov. is described from the Aleutian Islands, and compared to H. phrygiana (Parelius, 1768) from the North Atlantic-Arctic, as well as its congeners from the North Pacific. Distribution is discussed and a key to the described species of Hippasteria in Alaskan waters is presented.

The genus Anonyx (Crustacea, Amphipoda) in the North Pacific and Arctic oceans: Anonyx nugax group

1982 ◽  
Vol 60 (7) ◽  
pp. 1754-1775 ◽  
Author(s):  
D. H. Steele
Keyword(s):  
New Species ◽  
Arctic Ocean ◽  
North Pacific ◽  
The Other ◽  
Pacific Region ◽  
The North ◽  
Two New Species ◽  
The Status ◽  
North Pacific Region ◽  
The North Pacific

Thirteen species of the Anonyx nugax group (uropod 2 partially constricted) are listed for the North Pacific and adjacent Arctic ocean. Two new species, Anonyx beringi and Anonyx barrowensis are described; A. pacificus Gurjanova, A. anivae Gurjanova, A. comecrudus Barnard, and A. epistomicus Kudrjaschov are redescribed; and the status of the other species is reconsidered and commented upon. Only four of these species, nugax, sarsi, lilljeborgi, and debruyni, have circumpolar distributions, with the other nine confined to the North Pacific region or to it and adjacent seas.

Geonettia waltonensis, a new goniodomacean dinoflagellate from the Pliocene of the North Atlantic region, and its evolutionary implications

2000 ◽  
Vol 74 (5) ◽  
pp. 812-827 ◽  
Author(s):  
Martin J. Head
Keyword(s):  
New Species ◽  
North Atlantic ◽  
Late Miocene ◽  
North Atlantic Region ◽  
Atlantic Region ◽  
Closely Related Species ◽  
Dinoflagellate Cyst ◽  
The North ◽  
The North Atlantic ◽  
A New Species

A new species of the unusual dinoflagellate cyst genus Geonettia de Verteuil and Norris, 1996a is here described from the Pliocene of the western North Atlantic and eastern England. Geonettia waltonensis new species is only the second species to be formally described for this genus, whose type, G. clineae de Verteuil and Norris, 1996a, has a range of Miocene through Pliocene. Geonettia is a gonyaulacalean, goniodomacean genus of the subfamily Pyrodinioideae and is closely related to Eocladopyxis Morgenroth, 1966 and Capisocysta Warny and Wrenn, 1997, also found in the Cenozoic. However, Geonettia is the only known dinoflagellate cyst genus to have plates that dissociate extensively on both epi- and hypocyst during excystment. Geonettia waltonensis has this style of excystment, but its hypocystal tabulation is more akin to Capisocysta lata Head, 1998a than to G. clineae. Comparison of tabulation and other morphological features suggests that during the late Miocene, Capisocysta lata evolved from Geonettia waltonensis or a closely related species through failure of its epicystal plates to dissociate. Geonettia waltonensis probably did not evolve directly from G. clineae but may represent a separate lineage within Geonettia that arose during the Miocene.

scholarly journals Alcataenia longicervica sp. n. from murres, Uria lomvia (Linnaeus) and Uria aalge (Pontoppidan) in the North Pacific basin, with redescriptions of Alcataenia armillaris (Rudolphi, 1810) and Alcataenia meinertzhageni (Baer, 1956) (Cestoda: Dilepididae)

1984 ◽  
Vol 62 (10) ◽  
pp. 2044-2052 ◽  
Author(s):  
Eric P. Hoberg
Keyword(s):  
North Atlantic ◽  
North Pacific ◽  
Pacific Basin ◽  
North Atlantic Region ◽  
Uria Lomvia ◽  
Atlantic Region ◽  
The North ◽  
The Pacific ◽  
The North Pacific ◽  
North Pacific Basin

Alcataenia longicervica sp. n. (Cestoda: Dilepididae) is described from murres, Uria spp., in Alaska and other localities in the Pacific basin. From Alcataenia armillaris (Rudolphi, 1810), which it most closely resembles, A. longicervica is distinguished by larger size of organs (cirrus sac, vitelline gland, and seminal receptacle), greater number of testes, and extremely long neck. In specimens of A. longicervica there are 22–27 rostellar hooks distributed in two rows. Hooks in the anterior row measure 41–49 μm in length while those in the posterior are 38–48 μm. Two species of Alcataenia, A. armillaris and A. meinertzhageni (Baer, 1956), both characteristic cestodes of birds of the genus Uria Brisson, are redescribed from material from the North Pacific basin and are compared with descriptions of specimens from the North Atlantic region.

The Role of Oscillating Southern Hemisphere Westerly Winds: Global Ocean Circulation

2020 ◽  
Vol 33 (6) ◽  
pp. 2111-2130
Author(s):  
Woo Geun Cheon ◽  
Jong-Seong Kug
Keyword(s):  
Ocean Circulation ◽  
North Atlantic ◽  
North Pacific ◽  
Global Ocean ◽  
The North ◽  
Westerly Winds ◽  
The North Atlantic ◽  
Global Ocean Circulation ◽  
The Antarctic ◽  
The North Pacific

AbstractIn the framework of a sea ice–ocean general circulation model coupled to an energy balance atmospheric model, an intensity oscillation of Southern Hemisphere (SH) westerly winds affects the global ocean circulation via not only the buoyancy-driven teleconnection (BDT) mode but also the Ekman-driven teleconnection (EDT) mode. The BDT mode is activated by the SH air–sea ice–ocean interactions such as polynyas and oceanic convection. The ensuing variation in the Antarctic meridional overturning circulation (MOC) that is indicative of the Antarctic Bottom Water (AABW) formation exerts a significant influence on the abyssal circulation of the globe, particularly the Pacific. This controls the bipolar seesaw balance between deep and bottom waters at the equator. The EDT mode controlled by northward Ekman transport under the oscillating SH westerly winds generates a signal that propagates northward along the upper ocean and passes through the equator. The variation in the western boundary current (WBC) is much stronger in the North Atlantic than in the North Pacific, which appears to be associated with the relatively strong and persistent Mindanao Current (i.e., the southward flowing WBC of the North Pacific tropical gyre). The North Atlantic Deep Water (NADW) formation is controlled by salt advected northward by the North Atlantic WBC.

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