An emerging clock mechanism in a hydrozoan jellyfish

TL;DR

A new study shows that a jellyfish species uses an internal clock, not just light, to control when it releases eggs.

Contribution

The study identifies a novel endogenous clock mechanism for gamete release in a new hydrozoan jellyfish species.

Findings

Egg release in the jellyfish is governed by an internal clock.

The mechanism operates independently of external light cues.

This finding expands understanding of reproductive timing in marine organisms.

Abstract

The timed release of gametes is an important feature of marine organisms, and in hydrozoan jellyfish is usually controlled by light. A recent study in PLOS Biology reveals an emerging endogenous clock controlling rhythmic egg release in a novel hydrozoan species.

In hydrozoan jellyfish, the timing of gamete release is often coordinated by light. This primer discusses findings from a recent PLOS Biology article that elucidates a novel, endogenous clock-based mechanism that governs egg release in a new species of jellyfish.

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