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Short-Period Fluctuations in the Numbers of Barnacle Larvae, With Notes on Comparisons between Pump and Net Plankton Hauls

Published online by Cambridge University Press:  11 May 2009

K. A. Pyefinch
K. A. Pyefinch
Affiliation:
Formerly Biologist to the Corrosion Committee, British Iron and Steel Research Association. From the Marine Station, Millport
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Extract

Records are given of the numbers of barnacle larvae obtained from samples of water pumped through a plankton net. Several series of hauls were made at intervals over the time of year when barnacle larvae are abundant.

The numbers of the cyprid larvae of Balanus balanoides in the surface waters show a diurnal variation, being markedly less during the hours of darkness. This conclusion may also apply to the cyprids of B. crenatus and Verruca stroemia, but the numbers of these larvae were too small to permit reliable conclusions to be drawn. There is some evidence that similar diurnal variations occur in larval stages other than the cyprid.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 28 , Issue 2 , October 1949 , pp. 353 - 369
Copyright
Copyright © Marine Biological Association of the United Kingdom 1949

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References

REFERENCES

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