This would be a 'NO' result.
Posted on 03/13/2002 4:44:42 PM PST by vannrox
by Lee Alan Dugatkin and Jean-Guy J. Godin
Picture a man who has a way with the ladies, and a character not unlike James Bond may spring to mind. He's clever, classy, fearless and flashy-characteristics that are almost universally appealing to the opposite sex. Throw in the powerful sports car, and you have a nearly irresistible combination.
That females often flock to the most ostentatious males is not a phenomenon unique to humans. In many different species, successful males--those that sire the most offspring--are often larger or more brightly colored or "show off" with more vigorous courtship displays.
Females tend to be the choosier sex when it comes to selecting a mate, partly because males can produce millions of sperm, whereas females' eggs are few and far between. Thus, females may be more selective because they have more invested in each gamete and in the resulting offspring. And because the availability of eggs is a limiting factor in reproductive success, males tend to compete for female attention and not vice versa.
Over the past 25 years, a considerable body of scientific evidence in support of female choice has accumulated. Females actively choose their mates in a large variety of species--particularly ones in which males are less aggressive and display individual differences in secondary sexual characteristics, such as ornamental plumage or courtship displays. Nevertheless, how and why females select their partners and how mating preferences have evolved remain hotly debated issues among evolutionary biologists.
A choosy female faces two general tasks in selecting a mate. First, she must search for and locate a male. This task can be difficult if the population is sparse or if the danger of predators prevents her from spending a good deal of time searching for a suitable mate. Once she has encountered a male, the female must then decide whether to accept or reject him as a mate. The decision often involves some shopping around. In certain mating systems, females may encounter a group of available males and can compare them on the spot. For example, in early spring, male sage grouse (Centrocercus urophasianus) aggregate "cheek-to-jowl" in temporary communal mating arenas called leks, where they strut their stuff for the females. A female typically observes the displays of a number of males, apparently comparing them before mating with one lucky suitor. She then leaves the lek to nest and raise her brood elsewhere. Of all the potential mates on a lek, a few preferred males receive the bulk of the female attention.
But males are not always conveniently displayed like chocolates in a sampler box. More commonly, females encounter males one at a time. Comparing males in this case is presumably a more challenging cognitive task, as it involves remembering the characteristics of an individual that is no longer in sight. Studies have shown that females can rank the characteristics of sequentially presented males.
Theo C. M. Bakker and Manfred Milinski of the University of Bern in Switzerland found that female three-spined sticklebacks (Gasterosteus aculeatus) will tailor their mate choice to the relative attractiveness of the present and previously encountered males. Females were more likely to show interest in a male if his red nuptial coloring was brighter than the previous male's and more likely to reject a suitor whose coloring was less bright than his predecessor's.
Whether a female chooses her mate from among a dozen dancing grouse or between a pair of crimson fish, she generally selects the most conspicuous contender. Empirical evidence indicates that females commonly prefer male traits that most strongly stimulate their senses. (This evidence has recently been reviewed by Malte Andersson of the University of Göteborg in Sweden and by Michael J. Ryan of the University of Texas at Austin and Anne C. Keddy-Hector of Austin Community College.) For example, when given a choice, female green tree frogs (Hyla cinerea) are preferentially attracted to males that call the loudest and most frequently; female guppies (Poecilia reticulata) to the most brightly colored males; and female mallards (Anas platyrhynchos) to males that court them most frequently. Because of such preferences, males have typically evolved exaggerated secondary sexual traits to attract the opposite sex.
Even though evidence indicates that females can actively choose their mates, the question of why females discriminate, rather than mate at random, remains largely unresolved. How did female choice originate and evolve? What are its benefits and costs to individual females?
In some cases, females may favor mating with a male that is loud or brightly colored simply because he is easy to locate. Reducing the amount of time it takes to find a mate may reduce a female's risk of being killed by a predator. But for many species, mate choice is probably more complex. For many birds and mammals, natural selection appears to favor females who choose mates that provide them with some direct benefit that will increase their fecundity, their survival or the survival of their offspring. Such benefits might include food, a safe haven or even the prospect of fewer parasites.
In a long-term study of the barn swallow (Hirundo rustica), Anders P. Møller of the CNRS in Paris observed that females prefer to mate with males possessing elongated tail feathers. As it turns out, the long-tailed males are infected with fewer bloodsucking mites than their short-tailed counterparts. Because these parasites can jump from bird to bird, females that mate with long-tailed males benefit by avoiding infection and by producing greater numbers of healthier chicks than females that mate with shorter-tailed males. Unfortunately, because selecting a mate that offers direct benefits seems so obvious, few studies have tested this evolutionary model in a rigorous way.
When males provide no obvious resources, such as food or protection, females may choose to mate with the males that appear to have the best genes. How do they know which males have good genes? And why don't males just cheat by faking the traits associated with such genes? In 1975 Amotz Zahavi of the University of Tel Aviv in Israel suggested that females assess only those traits that are honest indicators of male fitness--a hypothesis known as the handicap principle. Honest indicators, which are "costly" to produce and maintain, should be associated with the most vigorous males.
While studying antipredator behavior in the Trinidadian guppy, we recently obtained some evidence that is consistent with the handicap principle. When a predatory fish nears a school of guppies, males, often in pairs, cautiously approach the potential threat to "inspect" it. Such risky behavior has been observed in many species, and behavioral ecologists have suggested that bold males may swim close to a predator to advertise their vigor to nearby females. In fact, laboratory studies have shown that when no females are present, no male guppy plays the hero by approaching the predator more often than his counterpart.
We hypothesized that boldness exhibited during predator inspection might be attractive to females because it should be a reliable indicator of fitness. Less vigorous guppies who tried to "fake" competence in predator inspection would likely be eaten. By using small, custom-built containers that allowed us to position males at different distances from a predator fish, we found that females indeed preferred the most intrepid males. Such courage appears to correlate with color: the males that swim closest to the predator are usually the most colorful. Thus, in the wild, females may have evolved a preference for the flashier males because color is a proxy for boldness and fitness.
Once females have expressed a preference for a certain trait, a process called runaway selection can occur. The model, first brought to the attention of evolutionary biologists by Ronald Fisher in 1958, suggests that a male trait and the female preference for that trait coevolve. For example, females that prefer to mate with large males should produce large sons as well as daughters that show a preference for large males. Under certain conditions, this process can escalate, producing increasingly exaggerated male traits and stronger female preference for those traits.
A number of behavioral ecologists have found some evidence for runaway coevolution of orange body coloration in male guppies and of female preference for this male trait. But a more convincing example of runaway selection has recently been presented by Gerald S. Wilkinson and Paul Reillo of the University of Maryland in their study of the stalk-eyed fly (Cyrtodiopsis dalmanni). In this species, females generally prefer to mate with males possessing widely spaced eyes. By selectively breeding the flies for 13 generations, Wilkinson and Reillo generated one line of flies in which the males had large eyestalks and another line of shorter-stalked males. They found that females in each line preferred the male trait selected for in that line--that is, females from the large-stalk line preferred males with the longest stalks, and females from the short-stalk line preferred shorter-stalked males. Female preference thus coevolved with the selected male trait.
How do preferences about mate choice originate? In some cases, females may have a preexisting sensory bias for a certain trait, not because it represents anything but because it attracts attention--a hypothesis championed most prominently by Ryan and John Endler of James Cook University in Australia. For example, female swordtails (Xiphophorus helleri) prefer males with long "swords" on their tail fins. And although males of a related species--the platyfish Xiphophorus maculatus-lack swords completely, Alexandra L. Basolo of the University of Nebraska found that when she attached artificial, plastic swords onto these naturally swordless males, female platyfish showed an immediate, strong and consistent preference for the males with the counterfeit swords. In other words, platyfish females harbored a preexisting bias for long swords, even though swords reveal nothing about the fitness of platyfish males.
These evolutionary models may be operating separately or in conjunction; it is difficult to untangle them experimentally. Female guppies, for instance, may be partial to orange males because bright coloring is a proxy for boldness or for good health (males with the brightest pigments are probably eating well). But the preference could have originated because females are more attuned to colors of a particular wavelength and then further evolved through a runaway mechanism.
All these models assume that female preference is genetically determined. Recent studies indicate, however, that social factors, such as imitation, also influence mate choice.
Why copy? Perhaps imitation teaches females what to look for in a male. In an extensive series of experiments on mate-choice copying in guppies, we determined that young females are more likely to copy the mate choice of older, more experienced females than vice versa. Further, copying may save time. Relying on the judgment of others may allow a female to assess a potential mate quickly and efficiently, leaving her more time to forage for food or hide from predators.
Which male did she then choose for herself? Remember that the female's genetic predisposition is "pulling" her toward the more orange male, but social cues and the potential to copy are tugging her toward the drabber male. In the end, her choice depended on how much the males differed in coloration. When the paired males differed by small (12 percent) or moderate (25 percent) amounts of orange, the female consistently chose the less orange of the two. In this case, the female succumbed to peer pressure, her tendency to copy overriding her genetic preference for orange males. If, however, the males differed by a large amount (40 percent) of orange, the female ignored the seemingly bad advice and chose the more orange male, her genetic predisposition masking any copying effects.
It appears as if there exists in guppies a color threshold, below which social cues steer female mate choice and above which genetic factors predominate. Dugatkin is performing further experiments to assess whether copying behavior in guppies is itself heritable. Although imitation appears to be based on social cues, perhaps genes govern the likelihood that a female guppy will engage in copying behavior.
Although people are more complex than guppies and grouse, some of the same mate-choice rules may apply to human dating games. According to popular wisdom, it is human females who are the choosier sex when it comes to selecting a mate. As a species, humans meet the criteria for female choice: men, for the most part, will avoid fighting to the death for the hand of a young maiden. And females can distinguish between various males on the basis of differences in their characteristics: some men are brasher, some are brighter and some have bigger bank accounts.
Women may even engage in mate-choice copying. After all, imitation is important in many types of human learning. To determine whether copying plays a role in how women rate a man's attractiveness, Dugatkin is currently collaborating with social psychologists Michael Cunningham and Duane Lundy of theUniversity of Louisville. Although their results are preliminary, they find that women are more likely to express an interest in going out with a man if they are told that other women also find him attractive.
Of course, evolutionary theory will never be able to explain fully singles bars, personal ads or cyber-romance. Even for animals, it appears that the benefits and costs of being choosy when selecting a mate differ for different species, in different environments and sometimes at different times of day. In any case, if animals as simple as guppies can consider the opinions of their peers when choosing a mate, imagine how complex the cues must be that guide humans in their search for the perfect mate.
When I was stationed in Germany, there was one even better, a Porche in Germany is sold as standard equipment - with a blond in the right hand seat.
What are you, a democrat? You should have gone working after school and gotten one yourself, like probably most of us FReepMales did.
My parents are divorced now, but were married when I met my dh when we were 15 and 17. My dad was rather distant, but I think ALL dads born in the 30's were kind of distant. My husband is so NOT like my dad.
But back to the point of the article, it was my husband's blue eyes and blond hair that got me first, and then it was his nice guy/bad boy combination. He turned out to be one of the nicest men I know.
As far as the money factor goes, I was too young to worry about whether or not he made any money to speak of. I'm more interested in his sense of humor, his parenting abilities, his fidelity, and his way of making me feel like I'm still his girl after 30 years. I wouldn't trade him for ANY of the super rich guys in the world. I plan on keeping him, Lord willing.
When our son was worried about meeting the right girl a few years back, he said, "But Mom, I want a PRETTY girl." And I told him that when he was 80 years old he wouldn't care if his wife was pretty or not, but it would matter a great deal if she was still a good and kind wife in his old age. It's not like I have forgotten what first attracted me to his father, but I'm old enough now to know that blond hair turns grey, and blue eyes eventually need glasses. :-)
ya can always trade up and stay "married"
No but can you explain why Lyle Lovet(sp?) snagged Julia Roberts...?
On February 24, 1996, three light aircraft left Miami on a routine flight. Their missions, to search the waters off the Florida Coast for rafters trying to reach the US shores, and bring them help by guiding the US Coast Guard to their location. That day in February, only one plane would return to its home base in Miami.
Tune in to Radio FreeRepublic this Thursday, March 14, at 9 PM EST, and listen to the actual sounds of a terrorist in action, murdering unarmed American citizens.
Sr. José Basulto, founder of Brothers to the Rescue and pilot of the surviving Cessna, will shed light on the events of that day, and detail how the Clinton administration withheld advanced knowledge of the attack from the humanitarian volunteer group, helping seal the fate of these four courageous flyers.
Radio FreeRepublic, fearless talk radio.
Well, the article and Darwin are of course wrong again. Now regardless of what women may say publicly - size does matter to them. Therefore, according to Darwinian theory, those with the biggest members should be the most fruitful. Yet simple research proves this to be totally wrong. The most productive race on earth are the asiatics, yet, they have the tiniest members. The least productive are the blacks, yet they have the largest.
That was the secret of Giacomo Casanova in his memoirs. Seduce one and get none. Seduce two and get both!
Women are jealous and competitive.
I always thought it was my eyes...Thanks Mom.
Besides that, married women in a bar are looking for the same thing that single women are, but with more urgency. You probably look like you can keep a secret, Dan.
I'm loyal to a fault. I definatly know how to keep a secret.
A single woman in a bar alone is probably looking to hook up, but a married woman in a bar alone is certainly looking to hook up. Be flattered, Danny boy.
The pipes are calling......
LOL. I never considered myself a bad boy, but 'old school'. I was raised as an old fashion blue collar Irish Catholic(not always a good one). Girly men don't exist in our family, if for no other reason...we never grew up around any(even the liberals). I sometimes think that I look in the mirror when I watch Die Hard's John McClane. Dry humor, one liners, blue collar guy, is conservative, not a saint, likes his beer, stubborn as a mule, very competitive, and in the end does the right thing and saves the world.
It's great that I'm attacting ladies,(Mostly mid to late 20's, slightly older than me - 23) but married women is trouble waiting to happen. A lot of times, people think I'm older than I really am as well. That may have something to do with it.
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