published in the journal Nature Ecology & Evolution . The research was carried out in the species of beetle Callosobruchus maculatus but, according to the first author of the work and researcher at the Swedish university, David Berger , told SINC , the phenomenon could be extended to “any species with strong sexual selection ”. The phenomenon could be extended to any species with a strong sexual selection “Sperm competition does not occur in all animal species, but it does in most of the main groups, including primates”, clarifies Berger. Among them are insects , where several males often mate with the same female. This leads to a form of sexual selection in which the male’s sperm compete to fertilize the female’s eggs. Males who produce

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larger or more competitive sperm often win the Vietnam Phone Number List competition and become parents . Now, the conclusions of this work have succeeded in showing that this , can lead to a higher rate of deleterious mutations in the offspring. Although the theory is not new, not enough experiments had been done to test it. DNA repair In each cell division that takes place during sperm production , DNA is damaged , but it is usually repaired by a cellular surveillance system . According to Berger, in competing males sperm is made at the expense of the genetic repair system. In the short term, this phenomenon increases the mutation rate, but in the long term it could decrease it “This can lead to more mutations in the offspring of males that are successful in sexual selection

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because they invest more in traits that increase their chances of winning the mating competition and less in DNA repair and maintenance in sperm cells.” , Explain. The short-term effect of this phenomenon is that the mutation rate increases . However, in the long term it could decrease it. “Parents of populations with high sperm competition over many generations adapt to new conditions by producing more sperm and more viable offspring compared to those adapted to a life of monogamy,” says the researcher. This can lead to “a genetic adaptation that increases the quality of the males and the quality of their sperm.” According to Berger, this may help explain “why there is still genetic variation in the quality of sexual partners and why there is

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