A new study from Tel-Aviv University has revealed that female Egyptian fruit bats living in captivity will trade sex for food. The researchers determined that this may explain why the male bats do not seem to mind when the females snatch food right out of their mouths. The study was focused on observations of three captive bat colonies over the course of a year.
Email address:. Now the scientists who made that discovery have revealed why this is the case. In some cases, they said, food is shared with relatives, while in others, the cost of defending their resources just may be too great.
Female Egyptian fruit bats living in captivity will consistently take food right from the mouths of their male peers. Now the Tel Aviv University team that made that discovery is back with new evidence to explain why the males put up with it. As reported in Current Biology on May 23, these male Egyptian fruit bats are repaid for their tolerance and generosity with sex.
Drosophila melanogaster is a small, common fly found near unripe and rotted fruit. It has been in use for over a century to study genetics and behavior. He was the first to discover sex-linkage and genetic recombination, which placed the small fly in the forefront of genetic research.
Drosophila melanogaster is a species of fly the taxonomic order Diptera in the family Drosophilidae. The species is known generally as the common fruit fly though inaccurately  or vinegar fly. Starting with Charles W.
Female Egyptian fruit bats are finicky lovers, but their desire for a mate may be swayed by his ability to provide food, according to a new study published in Current Biology. Researchers in Israel have observed captive Egyptian fruit bat females literally taking food from the mouth of willing males. To answer, they observed three colonies over the course of a year and noticed that females would eat from the mouths of males for weeks at a time as a sort of bat dinner date.
During mating, both males and females sometimes evolve creative strategies to pursue their interests. The study was published in the journal PNAS. The fundamental biological process of reproduction can differ greatly from animal species to species.
Proceedings: Plant Sciences. Male plants of Carica papaya L were induced to bear female flowers and yield a good fruit crop by the application of ethrel and chlorflurenol at various concentrations. During conversion of male flowers into female flowers, some intersexual flowers with transition were observed.
NCBI Bookshelf. Although both mammals and fruit flies produce XX females and XY males, their chromosomes achieve these ends using very different means. The sex-determining mechanisms in mammals and in insects such as Drosophila are very different. In mammals, the Y chromosome plays a pivotal role in determining the male sex.