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Flying in tune: Buzz brings mosquito pairs together
July 11, 2006Human beings are not the only animals keenly attuned to the high-pitched buzzing of mosquitoes—in fact, researchers have discovered, mosquitoes of both sexes are themselves highly responsive to the sounds of other mosquitoes and enter into complex mid-flight pre-mating duets that serve as a means of sex recognition.
The findings are reported in the July 12th issue of Current Biology by Gabriella Gibson of the Natural Resources Institute at the University of Greenwich and Ian Russell of the University of Sussex.
It has been known for decades that the highly specialized hearing organ of male mosquitoes enables them to detect and locate females. In the meantime, the potential for female responsiveness to sound has been overlooked, mainly because their antennae are so much simpler in form. Nonetheless, their auditory sensitivity is among the best of all insects analyzed thus far. Gibson and Russell have now demonstrated that pairs of flying Toxorhynchites brevipalpis respond to each other in a feedback-like interaction, such that each alters its own flight tone in response to the flight tone of the other. This interaction continues until the tones converge, in the case of male-female pairs, or dramatically diverge, in the case of same-sex pairs.
This flight-tone communication effectively serves as a mechanism for bringing together mosquitoes only of opposite sexes during pre-mating encounters and may hold the key to understanding how closely related species recognise con-specifics—that is, members of their own kind—because, the authors suggest, it is unlikely that identical sex-specific flight tones will be shared among different mosquito species.
Cell Press
This flight-tone communication effectively serves as a mechanism for bringing together mosquitoes only of opposite sexes during pre-mating encounters and may hold the key to understanding how closely related species recognise con-specifics—that is, members of their own kind—because, the authors suggest, it is unlikely that identical sex-specific flight tones will be shared among different mosquito species.
Cell Press
Mosquitoes Current Events and Mosquitoes News RSSActive hearing process in mosquitoes
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PATH Malaria Vaccine Initiative shares strategy for developing 'next-generation' malaria vaccines
Marking its tenth anniversary year, the PATH Malaria Vaccine Initiative (MVI) today unveiled a new strategy that sets the stage for an aggressive push targeting the long-term goal of eliminating and eradicating malaria. Malaria is one of the world's deadliest infectious diseases, killing nearly 900,000 people a year, most of them children in sub-Saharan Africa.
Media availability: The role of biomedical research in malaria eradication
Although malaria has been controlled in many local and regional populations, the permanent elimination of malaria parasites throughout the world remains an elusive goal, and the disease continues to claim nearly one million lives each year.
UC Davis researchers identify dominant chemical that attracts mosquitoes to humans
Scientists at the University of California, Davis, have identified the dominant odor naturally produced in humans and birds that attracts the blood-feeding Culex mosquitoes, which transmit West Nile virus and other life-threatening diseases.
UM School of Medicine researchers find extreme genetic variability in malaria parasite
Researchers at the University of Maryland School of Medicine Center for Vaccine Development (CVD) have charted the extreme genetic differences that occur over time in the most dangerous malaria parasite in the world.
Research ensures 50 million vaccinated against deadly brain infection
Research at the University of Liverpool has supported the vaccination of more than 50 million people against a zoonotic brain infection that affects thousands of children across Asia every year.
Scientists discover how to send insects off the scent of crops
Biotechnology and Biological Sciences Research Council (BBSRC)-funded research, published this week in Chemical Communication, describes how scientists have discovered molecules that could confuse insects' ability to detect plants by interfering with their sense of smell. This could reduce damage to crops by insect pests and contribute to food security.
UH Manoa researcher examines possible implications of daily commute and mosquito-borne diseases
University of Hawaii at Manoa assistant researcher Durrell Kapan recently published a paper, Man Bites Mosquito: Understanding the Contribution of Human Movement to Vector-Borne Disease Dynamics, in PLoS One. Published August 26, the paper highlights how daily commuting patterns in mega-cities may be a critically overlooked factor in understanding the resurgence of mosquito-borne diseases such as dengue fever, infecting 50-100 million people annually.
Decade-long US project to fight malaria builds thriving African mosquito net industry
In a decade-long initiative to protect millions of families from malaria in sub-Saharan Africa, a U.S. government-funded project helped sell 50 million bed nets in seven countries, crafted a voucher system to allow the poor to receive them for free or partial cost, and created enough incentives for private companies that they invested $88 million to expand their businesses.
New research confirms potential deadly nature of emerging new monkey malaria species in humans
Researchers in Malaysia have identified key laboratory and clinical features of an emerging new form of malaria infection.
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Mosquito Bites by Mcaa Inc /Gold Coast Mail Ctr | |
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