Female dolphins remember who is aggressive when choosing a mating partner, research shows
Summary
Female dolphins use unique calls, called signature whistles, to recognize male dolphins and remember their past behavior. Research shows that female dolphins avoid mating with the most aggressive males to reduce harm and stressful encounters during mating season.Key Facts
- Bottlenose dolphins have complex social lives and know each other for many years.
- Male dolphins often team up to aggressively herd females during mating, sometimes keeping them for hours or weeks.
- Aggressive behaviors include biting, hitting, and restricting females’ movements.
- Females risk injury and lose feeding time when forced into mating by aggressive males.
- Female dolphins hear males' signature whistles and remember which males are more aggressive.
- Females ready to mate show stronger avoidance of aggressive males than those with calves or not ready.
- The study was done on Indo-Pacific bottlenose dolphins in Shark Bay, Australia, over 40 years.
- Researchers used underwater playback of male whistles and drones to watch female reactions.
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