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Do cod form spawning leks? Evidence from a Newfoundland spawning ground
Marine Biology, 2006Catch and acoustic telemetry data were used to test three predictions of lekking behaviour in Atlantic cod (Gadus morhua L.) at a small-scale spawning ground (∼25 km2) in Placentia Bay, Newfoundland: (1) that cod form male-skewed aggregations during spawning; (2) spawning arenas occur at consistent sites; and (3) on the arenas, there will be higher ...
Matthew J. S. Windle, George A. Rose
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Sex differences in cod residency on a spawning ground
Fisheries Research, 2003Abstract Telemetric methods were employed to explore behaviour differences between male (n=21) and female (n=27) Atlantic cod (Gadus morhua) tagged and released in April 1998 on a spawning ground in coastal Newfoundland. Their distribution was monitored over a grid of listening stations for three consecutive spawning seasons (1998–2000).
David Robichaud, George A. Rose
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Food partitioning by flatfishes on a herring spawning ground
Sarsia, 2002Inter- and intraspecific dietary variations and diet overlap patterns of plaice ( Pleuronectes platessa L.), dab ( Limanda limanda L.), lemon sole ( Microstomus kitt Walbaum) and long rough dab ( Hippoglossoides platessoides Fabricius) from a coastal bank off Norway were analysed.
Äge Sigurd Høines, Odd Aksel Bergstad
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Multiyear homing of Atlantic cod to a spawning ground
Canadian Journal of Fisheries and Aquatic Sciences, 2001Long-term sonar transmitting tags were implanted in 27 female and 21 male cod (Gadus morhua) at the Bar Haven spawning ground in Placentia Bay, Newfoundland, in April 1998. Two thirds of tagged fish were relocated. All relocations during the 1999 and 2000 spawning seasons were within 10 km of the tagging site, the majority being within a few hundred ...
D. Robichaud, G.A. Rose
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Circulatory Function of Pink Salmon at the Spawning Grounds
1972After having spent 18 months of their two-year life span in the Pacific Ocean, mature pink salmon (Oncorhynchusgorbuscha) begin a spawning migration which instinctively leads them to the freshwater stream of their birth. Apparently they negotiate the hundreds of miles of the migratory route while abstaining totally from eating.
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Ria de Alvor as a spawning place and a nursery ground
Journal of Fish Biology, 1988Ria de Alvor is a small estuary between Lagos and Portimão on the south coast of Portugal, 37°7′–37°10′N, 8°35′–8°38′W.Samples were collected monthly in the period April 1985–March 1986 in an ichthyoplankton and ichthyofauna survey of the estuary. A WP‐2 plankton net was used for catching ichthyoplankton, and a beam trawl and a beach seine were used ...
M. M. Antunes +3 more
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Fidelity of adult cod to spawning grounds in Scottish waters
Fisheries Research, 2006This study investigates site fidelity of Atlantic cod ( Gadus morhua) to spawning grounds in Scottish coastal waters from a synthesis of historic and recent surveys of spawning distribution combined with an analysis of tag-recapture experiments conducted between 1960 and 1986.
P.J. Wright +3 more
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Vorticity Characteristics of Chinese Sturgeon Spawning Ground
2009Since the construction of the Gezhouba Dam in 1981, it has been found that Chinese sturgeon, Acipensor sinensis, performes natural propagation annually in a narrow reach downstream close to the Gezhouba Dam site. This would allow one to better investigate what the hydraulic and morphologic conditions of a river can meet the Chinese sturgeon spawning ...
Yu Yang, Zhongmin Yan, Jianbo Chang
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Journal of the Marine Biological Association of the United Kingdom, 1993
The dry weight and organic carbon content of eggs and components of Clyde spring herring eggs were measured at intervals during their development. Comparison with previously published data suggests that an increase has occurred in the weight of these eggs over the past thirty years.
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The dry weight and organic carbon content of eggs and components of Clyde spring herring eggs were measured at intervals during their development. Comparison with previously published data suggests that an increase has occurred in the weight of these eggs over the past thirty years.
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