CONTENTS
CONTRIBUTORS TO VOLUME 9
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The Biology of Ascidians
R. H. M I L L m
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I. Introduction
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11. Feeding .. .. ..
A. The Feeding Mechanism . . .. .. ..
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B. Food..
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HI. Breeding . . .. a .
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A. Breeding Season . . .. .. .. ..
B. Spawning .. .. .. .. * . ..
C. The Larva . . .. .. * . .. *.
IV. Life Cycle: Growth, Succession of Generations and
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Mortality
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V. Ecology . . .. ..
A. The Numbers and Biomass of Ascidians . .
B. Changes in Populations . . .. .. ..
C. Factors Affecting Distribution and Abundance. .
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VI. Predators, Parasites, Commensals and Symbionts . .
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A. Predators . . .. .. ..
B. Commensals, Parasites and Symbionts , . ..
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VII. Geographical Distribution
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A. Shallow-Water Ascidians . . .. .. ..
B. Deep-Water Ascidians
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