Abstract
A population of the regular sea urchin Lytechinus variegatus was sampled, and the gonad volume and test diameter recorded at monthly intervals for 10 years. Parameters abstracted from the data included the size and date when the gonads were full and when they were spent, the spawning pattern, and the spawn output. Environmental parameters available were sea temperature and rainfall. Correlations were determined among these. A correlation was also found between the appearance in successive years of a brood of young urchins on the shore and the temperature and rainfall.
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Communicated by J. Bunt, Miami
Contribution No. 1490 from Rosenstiel School of Marine and Atmospheric Science, University of Miami, 10 Rickenbacker Causeway, Miami, Florida 33149, USA. We are indebted to the Federal Water Quality Administration for supporting this work under Grant No. DI WP-01433.
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Moore, H.B., Lopez, N.N. Factors controlling variation in the seasonal spawning pattern of Lytechinus variegatus . Marine Biology 14, 275–280 (1972). https://doi.org/10.1007/BF00348177
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DOI: https://doi.org/10.1007/BF00348177