Georgia channelPublished on 2019 November
By contrast, according to the fecundity preference hypothesis, male preference for fecund females plays a role in the evolution of male mate choice in sexually cannibalistic species. The direction of first locomotion was determined with respect to whether or not the distance between the male and female decreased i. Such a distinction in neural activation between females and males may reflect a higher level of judgment by females, in contrast to more indiscriminate mating motivation of males.
Surprisingly, there was no clear relationship between the amount of male copulation attempts or successful copulations during singing on day 1, and later valence of pairs. In control flies, mated female flies had more GSCs than virgin female flies Fig 1D , as we reported previously [ 14 ]. Fixed body size did not differ among the four groups of females. Because the level of expression in dorsal VTA was about double that in ventral VTA, the scale of y-axis indicates separate percentages for both ventral lower values and dorsal higher values regions.
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