scholarly journals Lunar-related maturation and spawning migration in the honeycomb grouper, Epinephelus merra

2021 ◽  
Author(s):  
Ryosuke Murata ◽  
Takafumi Amagai ◽  
Daisuke Izumida ◽  
Yuji Mushirobira ◽  
Ryo Nozu ◽  
...  
Keyword(s):  
Spawning Migration ◽  
Honeycomb Grouper

BIOCHEMICAL STUDIES ON SOCKEYE SALMON DURING SPAWNING MIGRATION: IV. THE NON-PROTEIN NITROGENOUS CONSTITUENTS OF THE MUSCLE

1958 ◽  
Vol 36 (8) ◽  
pp. 833-838 ◽  
Author(s):  
J. D. Wood
Keyword(s):  
Sockeye Salmon ◽  
The Other ◽  
Spawning Migration ◽  
Female Fish ◽  
Male And Female ◽  
Low Level ◽  
Early Stages ◽  
Biochemical Studies

The non-protein nitrogenous constituents of muscle of migrating sockeye salmon were investigated. These constituents were found to be the same in both male and female fish and were present in approximately the same amounts in both sexes. The histidine content of the muscle in all fish decreased to one fifth of the original value during the early stages of the migratory journey and remained at the low level thereafter. Some of the other constituents changed to a smaller extent, usually increasing in the later stages of the migration. This was especially noticeable in female fish. However, the increase in the concentration of these constituents in the muscle was due to a decrease in the amount of muscle in the fish rather than to an increase in the amounts of the compounds themselves.

scholarly journals Evaluating the Effect of the Hydrotechnical Works from the Danube’s Caleia Branch on the Spawning Migration of Sturgeons

2020 ◽  
Vol 616 ◽  
pp. 012025
Author(s):  
Tiberius-Marcel Danalache ◽  
György Deák ◽  
Elena Holban ◽  
Marius Constantin Raischi ◽  
Diana Simona Fronescu ◽  
...  
Keyword(s):  
Spawning Migration

BIOCHEMICAL STUDIES ON SOCKEYE SALMON DURING SPAWNING MIGRATION: XII. LIVER GLYCOGEN

1960 ◽  
Vol 38 (1) ◽  
pp. 553-558 ◽  
Author(s):  
Violet M. Chang ◽  
D. R. Idler
Keyword(s):  
Sex Differences ◽  
Sockeye Salmon ◽  
Glycogen Content ◽  
Steroid Hormone ◽  
Liver Glycogen ◽  
Spawning Migration ◽  
Energy Expenditures ◽  
Liver Glycogen Content ◽  
Biochemical Studies ◽  
River Migration

Liver glycogen levels were determined for a pure stock of sockeye salmon (Oncorhynchus nerka) taken at three locations during spawning migration. The liver glycogen content of the male was found to be consistently greater than that of the female throughout the entire river migration. In both sexes liver glycogen decreased during the earlier phase of migration, but increased during the later stage so that the levels at the spawning grounds were approximately twice those at the mouth of the river. The changes which occur are discussed in relation to sex differences, energy expenditures, and plasma steroid hormone levels.

A model to estimate the annual production of roes (avgotaracho) of flathead mullet (Mugil cephalus) based on the spawning migration of species

2005 ◽  
Vol 75 (1-3) ◽  
pp. 138-148 ◽  
Author(s):  
George Katselis ◽  
Constantin Koutsikopoulos ◽  
Yiannis Rogdakis ◽  
Thanasis Lachanas ◽  
Evagelos Dimitriou ◽  
...  
Keyword(s):  
Mugil Cephalus ◽  
Spawning Migration ◽  
Annual Production
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