Abstract
Growth and population structure of Lepidochitona cinereus was studied at Easthaven in Scotland. Length was isometrically related to height and breadth, while tissue dry weight was negatively allometric. Length-shell weight relationships were variable with the time of year. Periods of differential growth were associated with the onset of growth in spring and gonad development in July. The use of growth-check lines to age individuals is described. Population structure and growth was investigated using a combination of winter growth-check line and length-frequency analyses. Infection with the protozoan Minchinia chitonis is shown to cause enhanced growth and deviation from the normal growth curve. Individuals survived for a maximum of 5 winters and length-frequency data could be interpreted only after growth-check line analysis due to extensive overlap of year-class size ranges. Year-class success was variable, and the present population was dominated by older year-classes.
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Communicated by J. Mauchline, Oban
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Baxter, I.M., Jones, A.M. Growth and population structure of Lepidochitona cinereus (Mollusca: Polyplacophora) infected with Minchinia chitonis (Protozoa: Sporozoa) at Easthaven, Scotland. Mar. Biol. 46, 305–313 (1978). https://doi.org/10.1007/BF00391401
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DOI: https://doi.org/10.1007/BF00391401