Fruit fly sperm compels females to do housework after sex sessionSeptember 30th, 2009 WASHINGTON - After sex, female fruit flies ditch the usual siesta in favour of extra foraging and searching for places to lay her eggs, a new study has found. The study showed that it is all down to a chemical or 'sex peptide' produced by male fruit flies.
How females control sperm storage to pick the best dadSeptember 9th, 2009 WASHINGTON - University of Exeter researchers have found new evidence to explain how female insects can influence the father of their offspring, even after mating with up to ten males. In the study, boffins found that female crickets are able to control the amount of sperm that they store from each mate to select the best father for their young.
Females 'don't fall for flashy males with strong sexual display'August 22nd, 2009 LONDON - In the marine world, attracting a mate can be really tricky. A new study on three-spined stickleback fish has found that females do not always trust males who emit strong sexual signals.
Female fruit flies prefer keeping sex short to get a reproductive boostAugust 22nd, 2009 WASHINGTON - A new study has shown that female fruit flies prefer keeping sex short and sweet because they get a reproductive boost from shorter intercourse. Since males like sex to last longer, a fight ensues.
How 'kinky' flying foxes maintain their 'harem' of choosy femalesAugust 20th, 2009 LONDON - A team of German scientists has found the secret of sexual success for flying foxes. They found that males with relatively high levels of testosterone in their blood are better able to maintain their 'harem' of choosy females.
Why girls can't resist the geeksAugust 20th, 2009 LONDON - In what may help understand why geeks get the girls, a study on the Satin Bowerbird's mating rituals has for the first time directly linked a male's cognitive performance to his luck with the ladies. "Males that are better problem-solvers are mating with more females," New Scientist magazine quoted says Jason Keagy, a behavioural ecologist at the University of Maryland in College Park, as saying.
What female fish wants in males changes over timeAugust 14th, 2009 MELBOURNE - A new research conducted by Australian scientists has shown that some female fish find different male traits attractive from year to year. According to the researchers, the changing preferences of female fish may play an important role in evolution.
Matings with attractive males may be less fertile than those with unattractive onesJuly 10th, 2009 WASHINGTON - A team of University College London and University of Oxford researchers say that a study on the evolution of ejaculation strategies has shown that attractive males release fewer sperm per mating to maximise their chances of producing offspring across a range of females. Writing about their findings in the journal American Naturalist, the researchers say that their findings suggest that, paradoxically, matings with attractive males may be less fertile than those with unattractive ones.
Smart males ration sperm to maximise offspringJuly 10th, 2009 LONDON - Attractive males release fewer sperm per mating to maximise their chances of producing offspring across a range of females, according to a new study. The findings by researchers at UCL (University College London) and the University of Oxford suggest that, paradoxically, mating with attractive males may be less fertile than those with unattractive ones.
Quiet guys in the corner, not flashy ones, score more with femalesJune 19th, 2009 WASHINGTON - Being heavily focused on keeping up appearance might serve as a successful "advertisement" for attracting mates, however, in some species, like stickleback fish, it's the caring ones who score. Yale scientists theorize that when males must provide care for the survival of their offspring, the males' signals will consistently be honest - and they may devote more of their energy to caring for their offspring than to being attractive.
Baboon mums 'exploit' chaperonesJune 17th, 2009 LONDON - A new study has shown that male and female baboons form platonic friendships. But while the females clearly benefit, it is a mystery what males get from such relationships.
Female pandas can discern the love calls of different suitorsJune 17th, 2009 LONDON - An American researcher has shown that female giant pandas can tell one male's love calls from those of others, taking the first step towards proving that females among the animals use these bleats to choose their mates. Ben Charlton, a biologist at Zoo Atlanta, says that this finding attains significance as a gaining a better understanding of how females pick their mates might help zoos breed the notoriously picky and endangered animals.
Feminine looking "sneaker" goby male fish end up getting the most sexJune 16th, 2009 WASHINGTON - Researchers at McMaster University have discovered the existence of two types of males of a fiercely invasive fish spreading through the Great Lakes, which might help explain how they rapidly reproduce. They revealed that in addition to round goby males, which guard the nest from predators and look after their offspring, there exists what scientists call "sneaker" males - little males that look like females and sneak into the nests of the larger males.
Males who serenade females get more sexJune 12th, 2009 WASHINGTON - Females of an Asian species of water strider keep their genitalia hidden to avoid any forceful copulation attempts, and expose them only after males produce a courtship "song" by tapping the water surface, according to a study. The study by Chang Seok Han and Piotr Jablonski at Seoul National University, Korea, found that females evolve a morphological shield to protect their genitalia from an approaching male.
Male hummingbirds move faster than fighter jets for loveJune 10th, 2009 LONDON - Male Anna's hummingbirds move faster than the fighter jets to impress potential mates, a new study has found. The study showed that during courtship flights, male hummingbirds sustain accelerations that would cause a fighter jet pilot to pass out.
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