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A simulation study on the schooling mechanism in fish.
- I. Aoki
It was found that group movements in unity could occur despite each indicidual lacking knowledge of movement of the entire school, and in the absence of a consistent leader.
Evidence of growth-selective predation on larval Japanese anchovy Engraulis japonicus in Sagami Bay
The ' growth-selec- tive predation' hypothesis (mechanism), which is theoretically independent of and synergistic with the existing hypotheses based on size and time under the general 'growth-mortality' concept for the survival process during the early life history of marine pelagic fish, is proposed.
An analysis of the schooling behavior of fish: Internal organization and communication process.
- I. Aoki
- 1 March 1980
Optimal growth temperature hypothesis: Why do anchovy flourish and sardine collapse or vice versa under the same ocean regime?
A simple "optimal growth temperature" hypothesis is proposed, in which anchovy and sardine regime shifts are caused by differential optimal temperatures for growth rates during the early life stages.
Density of MORB eclogite in the upper mantle
Three synergistic growth-related mechanisms in the short-term survival of larval Japanese anchovy Engraulis japonicus in Sagami Bay
The results supported and extended the 'growth-selective predation' hypothesis but not the 'bigger is better' hypothesis and the 'stage duration' hypothesis was not unequivocally supported by the present findings.
Growth and reproductive biology of the small penaeid shrimp Trachysalambria curvirostris in Tokyo Bay
The growth and reproductive biology of the penaeid shrimp Trachysalambria curvirostris in Tokyo Bay, Japan, is investigated by monthly bottom-trawl surveys and the observation of asynchronous development of oocytes in the ovary suggests that multiple spawning by individual females may occur during the reproductive season.
Predator-specific growth-selective predation on larval Japanese anchovy Engraulis japonicus
Exponential declines in the relative predation mortalities of larvae with higher growth rates suggest the potential for growth rate to exert a great effect on recruitment variability, but the predator field would regulate selection for growth characteristics of survivors.
Swimming behaviour and target strength of isada krill (Euphausia pacifica)
The swimming angle of isada krill (Euphausia pacifica Hansen) was measured in a tank and the target strength (TS) values were calculated using a theoretical scattering model. The average swimming…