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The Science of Nature - Red propolis is a substance produced by bees by mixing resins from plants with wax, oils, and other secretions to protect the hive against natural enemies. Dalbergia... 相似文献
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Takashi Kuriwada Norikuni Kumano Keiko Shiromoto Dai Haraguchi 《Behavioral ecology and sociobiology》2011,65(7):1483-1489
Inadvertent selection is an important genetic process that frequently occurs during laboratory culture. The mass-reared strain
of the sweet potato weevil Cylas formicarius exhibits stronger inbreeding depression than the wild strain does. When inbreeding depression occurs in a population, mating
with a close relative is often considered maladaptive; however, in some contexts, the inclusive fitness benefits of inbreeding
may outweigh the costs, favoring individuals that tolerate a low level of inbreeding depression. Theory predicts that mass-reared
strain weevils will avoid inbreeding while wild strain weevils will tolerate inbreeding. To examine this prediction, we compared
the effect of relatedness on the mating and insemination successes in mass-reared and wild strains of C. formicarius. While close relative pairs of the wild strain copulated less frequently than non-kin pairs, almost all mass-reared strain
pairs copulated irrespective of relatedness. The results showed that the strain with weak inbreeding depression (wild strain)
avoided inbreeding, whereas the strain with strong inbreeding depression (mass-reared strain) tolerated inbreeding. The contradiction
between the theoretical prediction and our results is discussed from the perspective of laboratory adaptation, mating systems,
and life history of C. formicarius. 相似文献
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