scholarly journals Growth rates of deep-sea benthic animals in the Rockall Trough

Author(s):  
J. D. Gage
Author(s):  
P. A. Tyler ◽  
J. D. Gage

INTRODUCTIONOphiacantha bidentata (Retzius) is a widespread arctic-boreal ophiuroid with a circumpolar distribution in the shallow waters of the Arctic seas and penetrating into the deep sea of the.North Atlantic and North Pacific (Mortensen, 1927, 1933a; D'yakonov, 1954). Early observations of this species were confined to defining zoogeo-graphical and taxonomic criteria including the separation of deep water specimens as the variety fraterna (Farran, 1912; Grieg, 1921; Mortensen, 1933a). Mortensen (1910) and Thorson (1936, pp. 18–26) noted the large eggs (o.8 mm diameter) in specimens from Greenland and Thorson (1936) proposed that this species had ‘big eggs rich in yolk, shed directly into the sea. Much reduced larval stage or direct development’. This evidence is supported by observations of O. bidentata from the White and Barents Seas (Semenova, Mileikovsky & Nesis, 1964; Kaufman, 1974)..


1992 ◽  
Vol 114 (4) ◽  
pp. 571-580 ◽  
Author(s):  
P. A. Tyler ◽  
R. Harvey ◽  
L. A. Giles ◽  
J. D. Gage

2004 ◽  
Vol 227 (3-4) ◽  
pp. 481-490 ◽  
Author(s):  
J.F. Adkins ◽  
G.M. Henderson ◽  
S.-L. Wang ◽  
S. O'Shea ◽  
F. Mokadem
Keyword(s):  

2016 ◽  
Vol 129 ◽  
pp. 196-212 ◽  
Author(s):  
Nancy G. Prouty ◽  
Charles R. Fisher ◽  
Amanda W.J. Demopoulos ◽  
Ellen R.M. Druffel

2020 ◽  
Vol 154 ◽  
pp. 111092 ◽  
Author(s):  
Winnie Courtene-Jones ◽  
Brian Quinn ◽  
Ciaran Ewins ◽  
Stefan F. Gary ◽  
Bhavani E. Narayanaswamy

Author(s):  
J. Mauchline

The mysid fauna of the Rockall Trough consists of more than 35 species partitioned between the pelagic water column and the bentho-pelagic environment. The pelagic mysids are dominated by Eucopia grimaldii, E. unguiculata and Boreomysis microps. The benthopelagic mysids, in a transect from 400 to 2900 m depth, are divided into four faunal associations. Pseudomma affine dominates the 400–800 m depth range; the impinging bathypelagic Gnathophausia zoea and the benthopelagic Boreomysis widens dominate the 800–1300 m range;Michthyops parva and Paramblyops rostrata are co-dominants in the 1400–2300 m range; while Amblyopsoides ohlinii dominates the 2170–2965 m range. The benthopelagic mysid fauna is most diverse at depths below 1400 m. It is dominated by species whose geographical distribution is restricted to the North Atlantic, in contrast to the pelagic mysid fauna, which is dominated by cosmopolitan species. Notes on the breeding season, biology and population structure of several species are given.


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