Covarying Shell Growth Parameters and the Regulation of Shell Shape in Marine Bivalves: A Case Study on Tellinoidea

<table>The differential growth index <i>ρ</i> plotted against the apical angle <i>α</i>: a strong negative covariance is recorded within each of the two studied bivalves genera,<i> Donax</i> and<i> Tellina</i>. (N.B.: similar patterns of negative covariation between <i>α</i> and <i>ρ</i> are observed, as well, within the other, smaller genus belonging to Tellinoidea:<i> Arcopagia, Gari, Macoma</i>; Béguinot,<i> unpublished results</i>).</table>

Journal of Marine Sciences

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Figure 3

Figure 3: Covarying Shell Growth Parameters and the Regulation of Shell Shape in Marine Bivalves: A Case Study on Tellinoidea 