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The interaction of lunar and solar time in relation to fish abundance

AuthorsWyatt, T. ; Vázquez, Antonio
Issue Date1988
PublisherConsejo Superior de Investigaciones Científicas (España)
CitationLong term changes in marine fish populations: a symposium in Vigo, España, 18-21 Nov. 1986 (1988)
AbstractIn many fish, spwning is synchronized with lunar phase, while production is ultimately dependent on ligh, and hence regualted in solar time. Since lunar and solar time only coincide at long intervals, there may be a conflict between the control of adult spawning behaviour and larval feeding requirements. It is suggested that long period (multiannual) tides may influence the sucess of larval survival. A search of fisheries statistics for signals corresponding to these multiannual periods has been made, and the pahses of the signals identified are compared with those of the nodal and perigean tides. The results of spectral anaysis of time series of Arcto-Norwegian cod, Celtic Sea hake, Atlantic sardine, American Mackerel and Scottish herring are given.
Description15 páginas, 8 tablas
Appears in Collections:(IIM) Libros y partes de libros
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