Here's a host of articles that seem to indicate that fruit flys are influenced by their environment in their sexual behavior, from types of relationships with males when young, to the consumption of alcohol, to, for some, genes.
The main article is about early relationships, but if you look at the bottom, you'll see other fruit fly experiments so you can look them up if you want.
Just seems to me that we're still really ignorant about human behavior in general and sexual behavior specifically, and that ignorance should lead to humility -- and thus an open-minded attitude -- cuz how really knows?
We're still studying fruit fly behavior.... and they're way more simple than our bigger, more complicated brains.
By the way, fruit flys sleep, they lay down and sleep. Cute little things.
And no, fruit flys probably aren't exact little models for human sexuality because they have some gene that apparently humans don't have. Still, even they're effected by both genes and relationships, alcohol consumption, etc....
And there's some type of antelope where the females are the aggressor, though as yet, science has not discovered anything that different in the genes of this antelope compared to it's closest relative.
Sort of like the Bonobos vs. the Chimps, indicating that mammals as well as fruit flys are influenced by early experience. And yes, there might also be individuals, just like in fruit flys, who have a genetic difference.
Anyway, whoever comes up with the Final Truth will probably win the Nobel Prize, so far that's not me
Self determination seems the only sane course of action, as well as the only moral one given our lack of knowledge, cuz pretending we know more than we do and then trying to pursuade others to believe as we do, has a moral dimension.
ast Experience Of Pheromones Induces Dominant Courtship Behavior In Fruit Flies
ScienceDaily (Oct. 12, 2005) — By investigating the interplay between pheromone signaling and behavior in fruit flies, researchers have begun to understand how an adult fly's earlier experience as a young individual can influence its behavior towards other flies as an adult. In particular, the researchers found that pheromone signals in the context of experience with adult flies can influence how young flies will behave once they reach maturity.
Mind & Brain
Plants & Animals
The work is reported by Jean-Francois Ferveur and colleagues at the Universite de Bourgogne, France, and the University of Manchester, United Kingdom.
When an adult male fruit fly encounters a young male fly, he will actively court the younger individual, sometimes becoming aggressive. These young males that have encountered older flies will go on to similarly dominate other adult males that had encountered only young flies--something in the early experience of the "dominant" flies makes them more aggressive. In the new work, researchers investigated exactly what it is about past experience of these flies that influences adult behavior. Clues caused the researchers to suspect that a key role was played by a chemical signal--a pheromone--carried by adult males during the early encounter.
To prove this, the researches used mutant flies that lack the normal adult pheromones, and they covered these pheromone-defective flies with a variety of other smells. The researchers were able to demonstrate that a male shows courtship dominance behavior over young males if he has been exposed to the smell of normal adult males during a critical period in his life--the first 24 hours. In fact, an encounter with a single adult male was sufficient to make males exhibit dominance behavior when they reached adulthood. The researchers found that, intriguingly, it was not enough for young males to smell these pheromones--the pheromones had to be carried by active adult males. The effect was so strong that males carried on exhibiting courtship dominance behavior until they were five days old.
The authors of the study note that similar findings have been reported in mice and hamsters, suggesting that dominance behavior may often be affected by chemical signals. In future studies, the researchers hope to take the next step in understanding how dominance behavior develops and thereby to identify which parts of the fly's brain are involved in processing dominance-inducing signals.
The researchers included Nicolas Svetec and Jean-François Ferveur of the Université de Bourgogne in Dijon, France; and Matthew Cobb of the University of Manchester, Manchester, UK.
Svetec et al.: "Chemical stimuli induce courtship dominance in Drosophila." Publishing in Current Biology Vol 15 No 19, pages R790-792 www.current-biology.com
Adapted from materials provided by Cell Press, via EurekAlert!, a service of AAAS.
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Cell Press (2005, October 12). Past Experience Of Pheromones Induces Dominant Courtship Behavior In Fruit Flies. ScienceDaily. Retrieved March 28, 2009, from http://www.sciencedaily.com
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One Missing Gene Leads To Fruitless Mating Rituals (July 25, 2008) — Male fruit flies missing a gene for one particular odor receptor become clueless in matters of love, scientists have discovered. Because they lack the ability to read important chemical cues, these ... > read more
Fruit Fly Pheromone Receptor First Ever Discovered Linked To Specific Sexual Behavior (Sep. 11, 2003) — For the first time in any animal, Duke University Medical Center researchers have linked a single pheromone receptor in the fruit fly to a specific sexual ... > read more
Sexual Frustration And Learning In Fruit Flies (Feb. 17, 2005) — By observing the mating rituals of fruit flies after different mating experiences, researchers have gained a greater understanding of how animals organize their behavioral responses in complex ... > read more
Flies, Too, Feel The Influence Of Their Peers, Studies Find (Sep. 12, 2008) — Researchers have found that group composition affects individual flies in several ways, including changes in gene activity and sexual behavior, all mediated by chemical ... > read more
Researchers Find How Protein Allows Insects To Detect And Respond To Pheromones (Jan. 27, 2005) — How do insects smell? Badly, according to a new study, if they lack a certain kind of protein critical to their ability to detect and interpret pheromones - the insect equivalent of ... > read more
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