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Female fish can favor sperm from preferred males despite external fertilization


August 16, 2016

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Biologists studying a small, colorful fish in the Mediterranean Sea have discovered a new way in which a female can choose the best father for her offspring. During spawning of the ocellated wrasse, ovarian fluid released with eggs favors sperm from the nest-tending males preferred by the females, limiting fertilization by "sneaker" males.Full Story

Source
University of California, Santa Cruz

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