Reproductive cycle and fecundity of the bonnethead Sphyrna tiburo L. from the northwest Atlantic Ocean

2020 ◽  
Vol 97 (6) ◽  
pp. 1733-1747
Author(s):  
Melissa Gonzalez De Acevedo ◽  
Bryan S. Frazier ◽  
Carolyn Belcher ◽  
James Gelsleichter
Keyword(s):  
Atlantic Ocean ◽  
Reproductive Cycle ◽  
Northwest Atlantic ◽  
Sphyrna Tiburo

Peculiarities in ovarian structure leading to multiple-year delays in oogenesis and possible senescence in Atlantic cod, Gadus morhua L.

2000 ◽  
Vol 78 (10) ◽  
pp. 1840-1844 ◽  
Author(s):  
Rick M Rideout ◽  
Margaret PM Burton
Keyword(s):  
Atlantic Ocean ◽  
Reproductive Cycle ◽  
Gadus Morhua ◽  
East Coast ◽  
Atlantic Cod ◽  
Spawning Season ◽  
Northwest Atlantic ◽  
Spawning Cycle ◽  
Ovarian Structure

Five specimens of female Atlantic cod, Gadus morhua L., four collected during regular surveys of the northwest Atlantic Ocean, had ovarian structures that suggested that multiple-year interruptions were occurring in the spawning cycle of these fish. One specimen was experiencing a minimal 2-year delay in its reproductive cycle because the ovary contained only oogonia, which would have had to mature before any spawning could occur. Two other specimens did not contain oogonia or perinucleolar-stage oocytes, suggesting that these ovaries were senescent. Another two ovaries, one removed from a broodstock female and one taken from a female collected off Newfoundland's east coast, contained large masses of resorbing hyaline oocytes, which would likely have impaired the normal release of hydrated oocytes in the next spawning season.

DETAILED RECORDS OF THE ICE-RAFTED DETRITUS IN SEDIMENTS FROM THE ORPHAN KNOLL, NORTHWEST ATLANTIC OCEAN

2020 ◽  
Author(s):  
Alisha L. Guglielmi ◽  
◽  
James L. Cullen ◽  
Annette Lott ◽  
Jerry F. McManus
Keyword(s):  
Atlantic Ocean ◽  
Northwest Atlantic

Dissolved chromium in the northwest Atlantic Ocean

1981 ◽  
Vol 53 (3) ◽  
pp. 427-433 ◽  
Author(s):  
J.A. Campbell ◽  
P.A. Yeats
Keyword(s):  
Atlantic Ocean ◽  
Northwest Atlantic

Upper mantle shear structure beneath the northwest Atlantic Ocean

1984 ◽  
Vol 89 (B13) ◽  
pp. 11465-11475 ◽  
Author(s):  
Stephen P. Grand ◽  
Donald V. Helmberger
Keyword(s):  
Atlantic Ocean ◽  
Upper Mantle ◽  
Northwest Atlantic ◽  
Shear Structure

scholarly journals Distribution of deep-water corals of the Flemish Cap, Flemish Pass, and the Grand Banks of Newfoundland (Northwest Atlantic Ocean): interaction with fishing activities

2010 ◽  
Vol 68 (2) ◽  
pp. 319-332 ◽  
Author(s):  
F. J. Murillo ◽  
P. Durán Muñoz ◽  
A. Altuna ◽  
A. Serrano
Keyword(s):  
Atlantic Ocean ◽  
Continental Slope ◽  
Deep Water ◽  
Coral Species ◽  
Habitat Mapping ◽  
Bottom Trawl ◽  
Soft Corals ◽  
Northwest Atlantic ◽  
Grand Banks ◽  
Black Corals

Abstract Murillo, F. J., Durán Muñoz, P., Altuna, A., and Serrano, A. 2011. Distribution of deep-water corals of the Flemish Cap, Flemish Pass, and the Grand Banks of Newfoundland (Northwest Atlantic Ocean): interaction with fishing activities. – ICES Journal of Marine Science, 68: 319–332. The distribution of deep-water corals of the Flemish Cap, Flemish Pass, and the Grand Banks of Newfoundland is described based on bycatch from Spanish/EU bottom trawl groundfish surveys between 40 and 1500 m depth. In all, 37 taxa of deep-water corals were identified in the study area: 21 alcyonaceans (including the gorgonians), 11 pennatulaceans, 2 solitary scleractinians, and 3 antipatharians. The greatest diversity of coral species was on the Flemish Cap. Corals were most abundant along the continental slope, between 600 and 1300 m depth. Soft corals (alcyonaceans), sea fans (gorgonians), and black corals (antipatharians) were most common on bedrock or gravel, whereas sea pens (pennatulaceans) and cup corals (solitary scleractinians) were found primarily on mud. The biomass of deep-water corals in the bycatches was highest in previously lightly trawled or untrawled areas, and generally low in the regularly fished grounds. The information derived from bottom-trawl bycatch records is not sufficient to map vulnerable marine ecosystems (VMEs) accurately, but pending more detailed habitat mapping, it provides a valuable indication of the presence/absence of VMEs that can be used to propose the candidate areas for bottom fishery closures or other conservation measures.

scholarly journals Cardicola forsteri (Digenea: Sanguinicolidae) from the Heart of a Northern Bluefin Tuna, Thunnus thynnus (Scombridae), in the Northwest Atlantic Ocean

10.1654/4135 ◽  
2004 ◽  
Vol 71 (2) ◽  
pp. 245-246 ◽  
Author(s):  
Stephen A. Bullard ◽  
Robert J. Goldstein ◽  
Robert H. Goodwin ◽  
Robin M. Overstreet
Keyword(s):  
Atlantic Ocean ◽  
Bluefin Tuna ◽  
Thunnus Thynnus ◽  
Northwest Atlantic
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