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Published on: June 6, 2019
Multiple mating, sperm storage, and mating preference in Aplysia californica
Adam N Ludwig1, Patrick J Walsh
1Division of Marine Biology and Fisheries, NIH NCRR National Resource for Aplysia, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, USA.
The Biological Bulletin
|December 23, 2008
Summary
Aplysia californica, a simultaneous hermaphrodite, store allosperm. After mating, sperm recipients prefer donating sperm, but this changes after egg-laying, indicating stored sperm depletion influences mating decisions.
Area of Science:
- Marine biology
- Behavioral ecology
- Reproductive biology
Background:
- Aplysia californica are simultaneous hermaphrodites known for storing and digesting allosperm.
- They frequently engage in multiple mating events with different partners.
Purpose of the Study:
- To characterize the mating behavior of multiply-mated Aplysia californica.
- To investigate the role of allosperm storage and depletion in mating decisions.
Main Methods:
- Controlled mating experiments were conducted.
- Behavioral observations were used to record mating roles and frequencies.
- Egg mass deposition was monitored in relation to mating events.
Main Results:
- All Aplysia californica engaged in a second mating, regardless of their initial role.
- Initial sperm recipients showed a strong preference for donating sperm in subsequent matings.
- This preference was absent if the initial recipient had already spawned fertilized egg masses.
Conclusions:
- Depletion of stored allosperm is a critical factor in resolving sexual conflict in Aplysia californica.
- Sperm storage capacity directly influences mating strategies and partner choice.
