Sentences with phrase «in mating behavior»

Differences in mating behavior and sex ratio between three sibling species of Nasonia.

Changes in diet, as Webster points out, can also favor one population of microbes over another, which scientists have found leads to changes in mating behavior.

Although the flagellum, along with the rest of the jaw, is thought to play an important role in the mating behavior of camel spiders, and was observed to transfer sperm to the female in at least one species, little is known about its precise function.

Instead, costs of mating in females appear to determine how patterns of parental care evolve in response to changes in mating behavior.

Not exact matches

To see if geladas take steps to conceal their unfaithfulness, le Roux and her colleagues observed the mating behaviors of 19 reproductive units living in the Simien Mountains National Park in Ethiopia.

Paleontologists note that the large opening would have made it rather useless in combat, so it may have been that it was used to regulate its body temperature, or that it was perhaps part of a sexual selection behavior designed to attract a mate.

Each partner should test his behavior in the marriage in terms of how well he uses opportunities to make his mate feel more adequate, attractive, and lovable as a male or a female.

«We knew that mercury can disrupt hormones — what is most disturbing about this study is the low levels of mercury at which we saw effects on hormones and mating behavior,» said Peter Frederick, a UF wildlife ecology professor who led the five - year study, in a university press release.

That Deondre is willing to engage in behavior risky to his own health, his leadership ability and its effectiveness with his team mates, and the Florida State Seminole brand.

And for millions of years male animals will kill babies that aren't theirs in order to mate with the mother... so since we want to imitate animals... is this normal behavior for humans also?

Males in sexually cannibalistic species often have risk - management behaviors to reduce their odds of being eaten, or at least their odds of successful mating before becoming dinner.

As a professor of ecology and biology at the University of Montana in Missoula, he had spent 20 years examining the mating and territorial behavior of dung and rhinoceros beetles, well known for their very large horns, to understand why some insects spend so much energy building big weapons.

Some, like bats, are unfairly maligned; others are adored despite shocking behavior, such as Adélie penguins, whose sex lives were considered so depraved that, in 1915, London's Natural History Museum boldly marked a paper about the birds» mating behavior as «Not for Publication.»

Innate social behaviors in the mouse brain: Neuroscientists image activity deep in the brain while mice engage in fighting and mating.»

The research investigates the role that facial features play in sexual relationships and mate selection and is published in Springer's journal Archives of Sexual Behavior.

New research published in the Journal of Personality and Social Psychology finds that women who were reminded of a time that their dad was absent from their lives — or who actually experienced poor quality fathering while growing up — perceived greater mating intent in the described behaviors of a hypothetical male dating partner and when talking with a man.

Under these conditions, the males» display behaviors, songs and plumages are important in female mate choice.

Experiments show that some transgenic fish do outcompete wild fish for food or mates, but no one knows whether that behavior will translate into greater fitness in a natural setting.

Patterns of parental care and productivity of different combinations of male - female pairs from the same or different selection lines were then examined to see whether selection on mating behavior led to a correlated, co-evolutionary response in parental care behavior.

Male parental care behavior did not change in response to selection on mating rate, but females responded to selection for high mating rates with a reduction in parental care.

New work published today in the journal Ecology Letters, used artificial selection and mating crosses among selection lines to determine if and how mating behaviors co-evolve with parental care behaviors.

«Understanding animals» movement patterns and the encounters they bring about is a key step in characterizing a population's mating system and essential for determining how behavior both facilitates and is subject to sexual selection,» explained Kamath, a postdoctoral scholar in UCSB's Department of Ecology, Evolution, and Marine Biology.

With colleagues there and at China's Hebei University, Chang wondered whether military weaponry and paraphernalia hold the same seductive value as antlers, horns and risky behavior, allowing warriors to best nonwarriors in the competition for mates.

The peak - shift effect, in contrast, helps to explain extreme traits and behaviors that pertain to all members of a species (both male and female giraffes must identify potential mates, which helps to explain why both genders have long necks).

UT Austin psychology researcher Daniel Conroy - Beam and his collaborators developed a method to test how mate preferences influence behavior and emotions in relationships in the study «What predicts romantic relationship satisfaction and mate retention intensity: mate preference fulfillment or mate value discrepancies?»

Fuse suggests this might be due to differences in pheromone signaling when the flies select their mates, or to altered circadian rhythms of mating or sleep behaviors.

Biologists studying mate selection in the wild search for changes in appearance or behavior that cause unsuccessful individuals to do better in the next round of courtship.

The authors systematically analyzed a large number of flies in which different patches of neurons lacked dati, and were able to map the rejection behavior to three distinct regions in the brain, two of which had never been previously associated with mating behavior.

To their great surprise they found that a mere 15 cells in two of the regions, and as few as 4 in the third region, were capable of producing mating rejection behavior.

And if they weren't necessary for survival, perhaps shafted feathers were used for activities only adults would engage in, like mating behavior.

In voles, this behavior includes recognizing the specific scents of other individuals, including potential mates.

In contrast, numerous studies on the social behavior and choice of mates among reptiles and birds, which are active during the day, have shown that information transmitted via color exerts an enormous influence on those animals» ability to communicate and procreate successfully.

Although the pheromones that inhibit mating in Drosophila were known, the positive pheromone signal that elicits courtship behavior and mating remained a mystery.

However, these studies did not in the end help identify the substance that would trigger mating behavior.

The monkey went on to display a form of mate - guarding behavior in that he chased other peripheral males away from the deer under his watch.

Scientists from the Max Planck Institute for Chemical Ecology in Jena, Germany, have succeeded in identifying a relatively simple molecule that is able to regulate complex mating behavior in vinegar flies: a fatty acid methyl ester called methyl laurate.

This suggests that pesticides and other hormone - disrupting chemicals not only may harm those who have close encounters with them, they may also affect mating behavior in later generations.

Their findings suggest that ovulating women have evolved to prefer mates who display sexy traits — such as a masculine body type and facial features, dominant behavior and certain scents — but not traits typically desired in long - term mates.

The pheromone methyl laurate triggers courtship behavior in males and is responsible for mating success.

Scientists theorize that these areas do the bulk of the work in maintaining individual species, perhaps by preserving different color patterns or mating behavior.

In a second study designed to test the results of the first, though, only narcissistic women reported more frequent attempts at mate poaching, leading the researchers to conclude that it's possible that narcissistic women are more frequently guilty of the behavior.

The study, called «Why (and When) Straight Women Trust Gay Men: Ulterior Mating Motives and Female Competition,» appears online in the journal, Archives of Sexual Behavior.

Mating - behavior studies of lizards in three southern US states have revealed which females male lizards find to be the sexiest.

In a study published in Nature, geneticist Andrés Bendesky of Harvard University and his colleagues worked with two kinds of mice that are genetically similar but differ in their pairing behavior: a subspecies of oldfield mice (Peromyscus polionotus subgriseus) form monogamous pairs, whereas deer mice (Peromyscus maniculatus) mate with multiple partnerIn a study published in Nature, geneticist Andrés Bendesky of Harvard University and his colleagues worked with two kinds of mice that are genetically similar but differ in their pairing behavior: a subspecies of oldfield mice (Peromyscus polionotus subgriseus) form monogamous pairs, whereas deer mice (Peromyscus maniculatus) mate with multiple partnerin Nature, geneticist Andrés Bendesky of Harvard University and his colleagues worked with two kinds of mice that are genetically similar but differ in their pairing behavior: a subspecies of oldfield mice (Peromyscus polionotus subgriseus) form monogamous pairs, whereas deer mice (Peromyscus maniculatus) mate with multiple partnerin their pairing behavior: a subspecies of oldfield mice (Peromyscus polionotus subgriseus) form monogamous pairs, whereas deer mice (Peromyscus maniculatus) mate with multiple partners.

Tracy Langkilde, an associate professor of biology at Penn State University, and Lindsey Swierk, a graduate student in Langkilde's lab, tackle this question by examining the mating behavior and blue - color patterns of fence lizards in Arkansas, Alabama, and Mississippi.

Same - sex sexual behaviour is common in animals but puzzles evolutionary biologists since it doesn't carry the same obvious benefits as heterosexual courtship behavior that leads to mating and production of offspring.

She adds that it was «clear to me» that the male was engaging in caretaking of his dying partner, although she adds that some of his behaviors — such as emitting alarm calls and trying to mate with her — might have been signs of stress rather than compassion.

Researchers interested in bird behavior have tended to focus on their flashy mating displays, melodious songs, and other talents, leaving the avian sense of smell largely unexplored.

«Mating behavior in the natural world contradicts Darwin's idea that females make the decisions, researchers find.»

Studies of courtship and mating in the fruit flyoffer a window on the ways genes influence the execution of complex behaviors