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April 26, 2026Bulletin of Marine Science

First observation of synchronous spawning by hard coral Porites cf. lutea at San Juan Reef, Sipaway Island (Tañon Strait, Central Philippines)

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Authors

MDMelisa S DobelmannGPGraham H PattersonJCJamie RK Craggs

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Overview

First observation of synchronous coral spawning in Porites cf. lutea near Sipaway Island, indicating key reproductive behaviors.

Key Points

  • To document and report the synchronous spawning behavior of Porites cf. lutea hard corals.
  • Observed spawning events on 17 May 2025 near Sipaway Island, Philippines.
  • Monitored more than 20 coral colonies four days post full moon.
  • Recorded gamete release duration and timing relative to sunset.
  • More than 20 colonies spawned synchronously, releasing gametes 3.5 hours after sunset.
  • Gamete release lasted approximately 30 minutes.
  • This marks the first documented instance of synchronous spawning in the Tañon Strait.

Cite This Study

Dobelmann et al. (2026) studied this question.

synapsesocial.com/papers/69edadd94a46254e215b55e5https://doi.org/10.5343/bms.2027.0071
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