The behavior of most animals is influenced by the periods of daylight and darkness in the environment. Fiddler crabs' courtship behaviors are instead synchronized by the 29 1/2-day cycle of the moon. What is the adaptive significance of using lunar cues?

Lunar cues

Explanation:

By courting at the full and new moon, fiddler crabs link their reproduction to the times of the highest tides that disperse their larvae to safer, deeper waters

Lunar cues provide a reliable way of coordinating reproductive activitiesRhythmic reproductive cycles and lunar periodicity have been proposed to favor population persistence under conditions of female biased or low population size Reproductive synchrony has its won set of selective advantages including fertilization success and protection of adults and offspring against predatorsBreeding activities in various taxa coincide either with the brightest or the darkest nights of the lunar cycle

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