Graduation Year


Document Type

Open Access Senior Thesis

Degree Name

Bachelor of Arts


W.M. Keck Science Department

Reader 1

Branwen Williams

Reader 2

Carlo Caruso

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2020 Sarah E Woo


Very little is known about how heat stress during larvae stages effect larvae survivorship, early coral recruit settlement, and later stage coral survivorship. We focused on determining how heat stress during larvae stages effected Montipora capitata survivorship over time. After thermally stressing larvae, we asked how many larvae survived the treatment, how the treatment affected settlement, how many larvae survived the heat treatment but did not settle, and later stage coral survivorship experienced residual effects from the heat stress treatment. We exposed coral larvae to ambient seawater temperatures at 30°C and heated seawater temperatures to 34°C for an hour and fifteen minutes. Our results indicate that heat stressed larvae settle with lower numbers of individual corals and aggregates at 24 hours post settlement. There was no significant difference between total number of recruits between temperature treatments and settlement time, nor on aggregate composition.