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Mating in Biological News

Disease threat may change how frogs mate

... wild frogs in the UK may be changing their mating behaviour. Dr Teacher conducted her research ... has been caused by a change in the frogs' mating strategy. With diseased frogs struggling to mate, healthy frogs are likely to be mating more often with other healthy frogs, leaving ...

New theory on why male, female lemurs same size

... males that guard females to keep other males from mating with them, and evolutionary biologists have long ... unlike gorillas and other primates that fight for mating rights with females, male lemurs have evolved to ... serves the purpose of preventing other males from mating with the female, while also freeing the male to ...

Spread your sperm the smart way

... Attractive males release fewer sperm per mating to maximise their chances of producing offspring ... per mating, and how this might vary depending on mating patterns. Previous studies have shown that in ... to breeding, they allocate them carefully to each mating to maximise their number of offspring. If a male ...

Male seahorses like big mates

... have a clear agenda when it comes to selecting a mating partner: to increase their reproductive success. ... conventional sex roles, with females choosing mating partners and males competing for their attention. ... that males may obtain fecundity benefits by mating with large-bodied females. Mattle and Wilson ...

Mate selection: How does she know he'll take care of the kids?

... their best qualities to attract females for mating isn't a new one, nor is the idea that they might ... of a guy in a bar are "advertisements" or mating displays that take substantial energy to ... Society B , examines the reliability of males' mating signals when they must care for offspring an ...

Why do we choose our mates? Ask Charles Darwin, prof says

... it one step further he confirmed that animals' mating choices can drive evolutionary change. "He ... and they give us a definitive record of who is mating with whom and what offspring resulted from the mating events. And also, what is the driving force ...

Is love at first sight real? Geneticists offer tantalizing clues

... plays an important role in mate selection, mating outcomes, and future reproductive behaviors. In ... or deactivating genes that play a role in female mating decisions," she added. To reach their ... females showed differences in behavior soon after mating and in reproduction-related activities, such as ...

Female mammals follow their noses to the right mates

... Clutton-Brock and McAuliffe conclude. Female mating preferences are likely to be just as important in ... One factor is the very nature of mammalian mating systems. Males compete fiercely with each other ... to mate with certain males, or are merely mating with them by default. "The most convincing ...

Mating that causes injuries

... tricky case involves species where the males have mating organs that are supplied with hooks, barbs, and ... scientists have studied seed beetles and their mating behavior. Gran relates that the males' mating organ is rather similar to a medieval spiked club ...

Fruit flies sick from mating

... mating can be exhausting. When fruit flies mate, the ... "We monitor how genetic expression is impacted by mating and show that the most common process that is ... Uppsala University. What's more, the cost of mating turns out to be rather high. "Previous ...

The more promiscuous the female, the speedier the sperm

... cichlids. These fish have extremely diverse mating behaviours, ranging from strict monogamy to ... to become more competitive in response to females mating with multiple males." Female promiscuity is a ... competitive only after a species shifted their mating behaviours to become more promiscuous," says John ...

Why you can't hurry love

... have developed a mathematical model of the mating game to help explain why courtship is often ... behave strategically towards each other in the mating game. The mathematical model considers a male and ... mating. The female gets a positive payoff from mating if the male is a ''good'' male but a negative ...

Spider love: Little guys get lots more

... Big males outperform smaller ones in head-to-head mating contests but diminutive males make ten times ... The larger males were more successful at mating with and impregnating females when they competed ... smaller males when they compete for food and mating rights. However, evidence from studies of midges, ...

Researchers study acoustic communication in deep-sea fish

... produce sound that plays a prominent role in male mating calls. These findings, published online today ... position. In previous work outside of the mating season, they found that the tiny intermediate ... research team obtained the fish during the summer mating season and found that intermediate muscle weight ...

Lightweight and long-legged males go the distance for sex

... that male giant weta most successful at mating travel greater distances each night. Remarkably, ... and colleagues gained unprecedented insight into mating habits of weta by radio-tracking them over ... (no female traits predicted female mobility or mating success). "Our findings are a rare example of ...

Male fish deceive rivals about their top mate choice

... observed his sexual advancesincluding nipping and mating attemptsfor five minutes, repeating the ... suggest that deceptive signals may be a powerful mating strategy used by males to lead competitors away ... the ruse would have easy access to the choicest mating partner. ...

Mate or hibernate? That's the question worm pheromones answer

... of Agriculture have discovered the first mating pheromone in one of science's most well-studied ... in these secretions that are responsible for the mating signal. When tested individually, the ... hibernation pheromone and the UF-discovered mating pheromone were almost identical. Tests in worms ...

When it comes to female red squirrels, it seems any male will do

... red squirrels showed high levels of multimale mating and would even mate with males that had similar genetic relatedness, basically mating with their relatives. Researchers from the ... National Park in southwest Yukon. While males mating with multiple females is quite common in the ...

Male seahorses are nature's Mr. Mom, Texas A&M researchers say

... and pipefish where females deposit eggs during mating is a novel trait that has had a huge impact on ... to become pregnant has completely changed the mating dynamics. When seahorses mate, the female ... in this reversed context. To study the mating behavior of seahorses and pipefish, Jones lab ...

Male seahorses are nature's Mr. Mom, Texas A&M researchers say

... and pipefish where females deposit eggs during mating is a novel trait that has had a huge impact on ... to become pregnant has completely changed the mating dynamics. When seahorses mate, the female ... in this reversed context. To study the mating behavior of seahorses and pipefish, Jones lab ...

Armed beetles find a mate, whatever their size

... biggest is usually best, as males often fight for mating rights and those with the largest jaws beat off ... University in Japan have been monitoring the mating habits of large, medium and small Librodor ... have ensured that, through their size-determined mating tactics, they all have a chance of finding a ...

Fungi can tell us about the origin of sex chromosomes

... Fungi do not have sexes, just so-called mating types. A new study being published today in the ... and animals and the parts of DNA that determine mating types in certain fungi. This makes fungi ... and more primitive system of different so-called mating types. These are distinguished by different ...

Female katydids prefer mates 'cool' in winter and 'hot' in summer

... Mo. Katydid (or didnt she?) respond to the mating call of her suitors. According to scientists at ... to the ability of male katydids to adjust their mating calls to attract females. Males of the katydid ... to Missouri, produce calls to attract females for mating that change with the seasons. The males summer ...

Science, not romance, controls mating at Smithsonian's National Zoo

... that most humans equate with love and romance, mating and dating at the National Zoo is planned, ... frogs are quite persistent when it comes to mating and will attach themselves to a specific female for 120 days before mating with her. Since females must lay their eggs in ...

A special issue of the International Journal of Plant Sciences

... seen the most growth: flowers and pollination, mating patterns and gender strategies, and asexual ... In the first article of the section mating Patterns and Gender Strategies, Boris Igic, ... of the importance of group-level selection of mating systems. The final two articles in the ...

In promiscuous antelopes, the 'battle of the sexes' gets flipped

... pay a heftier price, are choosier about their mating partners. When biologists talk about the ... to prefer to mate with males in the center of mating arenas, weve found a reversal of these ... may occur in species where females benefit from mating multiply, either because it increases their ...

Like father, like son: Attractiveness is hereditary

... need to make themselves accessible to males for mating to take place, so males cannot force copulation. Therefore, the speed at which mating occurs can be taken as an indication of the ... males do not produce more offspring than those mating with less desirable males. This study indicates ...

Predators and parasites may increase evolutionary stability

... consequences of these interactions. mating systems are a complex set of traits that reflect ... and numerous environmental factors that influence mating success. These traits have profound consequences ... Plants and animals display a dramatic range of mating systems, including mixed mating. The mechanism ...

Scientists uncover how hormones achieve their effects

... signal chain through which pheromones stimulate mating in yeast have been gained by scientists at the ... of a pheromone a chemical signal stimulating mating behaviour - by a nearby cell, yeast cells form a projection that serves as a mating organ and brings about the fusion of two cells. ...

For honey bee queens, multiple mating makes a difference

... early in a queens life, she makes several mating flights. On these flights, she mates -- in midair ... mates is 12. The queen stores the semen from her mating flights for the remainder of her life, two to ... physiology until now. To determine the effect mating has on honey bee queens, the scientists ...

New study sheds light on Galápagos hawk evolutionary history

... biologists for decades because of its unusual mating system, (cooperative polyandry) within some, but not all, island populations. In this type of mating system, a single female hawk and up to eight male ... group and cooperate to rear chicks. This type of mating system is rare among birds, and understanding the ...

Sex is thirst-quenching for female beetles

... because the longer the female goes without mating with another male, the greater his chance of ... shows that males can also prevent females from mating with other males by giving them a valuable ... the trade-off between the costs and benefits of mating is essential to ...

Research shows that 'invisible hand' guides evolution of cooperative turn-taking

... monkeys, birds, and antelopes that take turns grooming each other, and mating pairs of Antarctic penguins that take turns foraging at sea while their ... but could not initiate it in the first place. For example, in a mating pair of penguins who both went foraging or both incubated the eggs at the ...

Nematode courting caught on camera

... Researchers studying the nervous control of nematode mating behavior have produced video footage of a male worm preparing to mate with ... on the other side. On finding the vulva, the male inserts his spicules and mating commences. ...

Hidden genitalia in female water striders makes males 'sing'

... quite well understood. Sometimes, however, a behavioral trait, such as mating frequency, depends on both the male and the female characteristics. Natural selection favors higher mating frequency in males than in females in many animals, including humans. This ...

Mosquitoes create harmonic love song before mating, study finds

... per second] for the female and 600 hertz for the male," said Hoy. The mating duet, generated just before the couple mates on the fly, settles at around ... to previous thought, female mosquitoes are not deaf. To study mosquito mating calls, the researchers tethered mosquitoes and flew them past each other ...

Female plant 'communicates' rejection or acceptance of male

... plants must rely on the interaction of molecules to determine appropriate mating partners and avoid inbreeding. In a new study, University of Missouri ... or rejects individual pollen grains for reproduction. Like humans, the mating game isn't always easy for plants. Plants rely on external factors such as ...

Pregnant mice block out unwelcome admirers to protect their pups

... prolactin. This phenomenon is often called the Bruce effect and creates a mating opportunity for the alien male. It is also beneficial for the female ... odours. The dopamine flood is triggered by the physical stimulation during mating and progressively impairs the perception and discrimination of social ...

Reproductive plasticity revealed: Neotropical treefrog can choose to lay eggs in water or on land

... tropical sunlight that dries out the eggs. In two shady forest ponds the mating frogs laid terrestrial egg masses, as expected from previous research. In ... ponds in an open field and in the forest. When they placed pairs of mating treefrogs in the shaded ponds, the frogs laid eggs on leaves above the ...

Variety is the spice of life: too many males, too little time...

... meaning that visual cues are very important. Healey et al. propose that by mating with one yellow and then one red male (or vice versa), female painted dragons are making sure that they are in fact mating with two different males and not the same male twice. This preference ...
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