动物模型,繁殖能力 z-bo 2022-02-02 346

　　Most studies on how animals choose companions focus on the quality indicators of the evaluation, assuming that all individuals agree to find attractive companions, with little attention to the reasons why personal preferences will change. There is a theory that individuals will choose partners with genes that match their own genes. Another theory states that they will choose a spouse that matches their behavior.

　　To test this, Plank Siweisen, a researcher at the German Ornithological Institute, wanted to know what would happen if he matched these animals randomly instead of picking them freely.

　　First of all, they arranged a "speed date" event for 160 pigeons so that they could choose their partner freely. Later, the previous relationship completely broke down, and half of the women were randomly paired with men.

　　Breed successfully

　　The restored birds were kept in cages for several months so that they could adapt to each other. Both the control group and the random pair group were kept in a cage for 5 months, and three pairs were observed, and the research showed that the breeding was successful.

　　The number of surviving birds in the flock of birds that selected mating partners increased by 37%. The random pairing group had three times more unfertilized eggs, more eggs were buried or lost, and more birds died during the hatching process. Moreover, when the young birds are easiest to hatch, the cocks do not make enough effort to protect their nests.

　　This may not be surprising, but in this group, women are reluctant to mate with men, and men are more likely to find new friends. The researchers also found that embryo mortality was the same in the two groups. In other words, the reduced reproductive survival rate is due to the quality of childcare rather than genetic mismatch.

　　The conclusion is that if a bird selects a mate due to its consistent genetics, then the freely selected bird will have a lower embryonic mortality due to its genetic matching, resulting in healthier embryos.

　　author Marika Ile believes that the reproductive success rate of forced pairing is very low because "psychological restrictions" hinder their ability to become the best parents. She said: "They did their best to raise chicks, but they were not capable."

　　complex behavior

　　The pairing at the University of Bath in the United Kingdom is very, he said it involves complicated actions. Husbands and wives have a high rate of successful reproduction, not only because they are willing to raise children together, but also because they can complement each other.

　　Sekerry: “Speaking of men’s protection of the family more than women and the next generation of women, successful couples can fulfill their obligations. You can keep your family, which is also a sign of success.” Exeter, UK University's

　　Ickoyle discovered in this study how individuals perceive the coherence of the behavior of potential partners. He said that although it is not completely clear, he admits that personality traits, such as boldness and shyness, may play an important role. He said: "The current research proves the importance of choosing a partner. Attraction is a relative concept."